CENTRAL AIR CONDITIONING AIR HANDLER DRAIN LINE FLUSH AND SCENT INJECTOR

Abstract

Enhancements to an air handler of an air conditioning system. The enhancements can include a scent dispersion system, a heat exchanger rinse system, and/or an air handler condensation drain pipe flush system. The scent dispersion system employs a pressure differential established within the air handler to draw a scent mist from a scent reservoir. The scent is disbursed throughout the structure by the air conditioning ventilation system. The heat exchanger rinse system dispenses a rinse fluid onto the heat exchanger. A cleaning composition can be injected into the rinse fluid to aid in the cleaning process. The flush system automatically configures a check valve upstream of the flush injection point. A flush fluid flows through the drain pipe applying a pressure to dislodge a blockage therein. A chemical composition can be added into the flush fluid to assist in the dislodging process.

Claims

1. An air handler of an air conditioning system comprising: an air handler drain pipe providing fluid communication between a condensation collection tray of the air handler and a discharge end of the air handler drain pipe; the air handler drain pipe segmented into an upstream portion extending between the air handler and a condensation backflow check valve and a downstream portion extending between the condensation backflow check valve and the discharge end of the air handler drain pipe, the condensation backflow check valve comprising: a float activated check valve and switch enclosure, an actuator body slideably located within an interior of the float activated check valve and switch enclosure, an inlet flow control aperture and a discharge flow aperture formed proximate a first end of the actuator body formed proximate a second, opposite end of the actuator body, and a float element carried by the float activated check valve and switch actuator body; a backflow actuated switch; an automated air conditioning air handler condensation drain pipe flush system adapted to inject flush fluid into the downstream portion of the air handler drain pipe, the automated air conditioning air handler condensation drain pipe flush system comprising: a flush fluid supply pipe providing fluid communication between a flush fluid supply source and the downstream portion of the air handler drain pipe, an air handler drain pipe flush supply flow control valve adapted to control a flow of flush fluid between the flush fluid supply source and the downstream portion of the air handler drain pipe, an air handler drain pipe flush supply flow controller circuit adapted to control operation of the air handler drain pipe flush supply flow control valve; wherein the condensation backflow check valve enables flow of collected condensation between the upstream portion of the air handler drain pipe and the downstream portion of the air handler drain pipe during normal operating conditions, wherein the condensation backflow check valve one of restricts flow or blocks flow between the upstream portion of the air handler drain pipe and the downstream portion of the air handler drain pipe when draining flow stops resulting from the drain pipe blockage, wherein the float element is arranged to raise the actuator body when the drain pipe blockage blocks flow of collected air handler condensation through the downstream portion of the air handler drain pipe and the actuator body actuates the backflow actuated switch when the float element reaches a predetermined position.

2. An air handler of the air conditioning system as recited in claim 1, the inlet flow control aperture is located to align with a passageway of the upstream portion of the air handler drain pipe during normal operating conditions.

3. An air handler of the air conditioning system as recited in claim 1, the actuator body further comprising a plurality of the inlet flow control apertures spatially arranged about a circumference of the actuator body.

4. An air handler of the air conditioning system as recited in claim 1, wherein the float element is located within an interior of the float activated check valve and switch actuator body.

5. An air handler of the air conditioning system as recited in claim 1, the air handler drain pipe flush supply flow controller circuit further comprising a microprocessor, a digital memory in signal communication with the microprocessor, and a clocking circuit in signal communication with the microprocessor.

6. An air handler of the air conditioning system as recited in claim 1, the air conditioning system further comprising a thermostat, the thermostat being adapted to control operation of the air conditioning system, wherein the air handler drain pipe flush supply flow controller circuit is provided in signal communications with the thermostat.

7. An air handler of the air conditioning system as recited in claim 1, the air handler drain pipe flush system further comprising a chemical composition injection system, the chemical composition injection system adapted to dispense a flush assisting chemical composition into the downstream portion of the air handler drain pipe to aid the flush fluid in clearing the drain pipe blockage within the downstream portion of the air handler drain pipe.

8. An air handler of the air conditioning system as recited in claim 1, further comprising an air handler heat exchanger rinse system, the air handler heat exchanger rinse system comprising: a heat exchanger rinse fluid delivery conduit providing fluid communication between a rinse fluid source and at least one rinse fluid delivery component positioned to dispense rinse fluid onto an air handler heat exchanger of the air handler of the air conditioning system; a rinse supply flow control valve adapted to control a flow of rinse fluid between the rinse fluid source and the at least one rinse fluid delivery component; and an air handler heat exchanger rinse system controller circuit adapted to control operation of the rinse supply flow control valve.

9. An air handler of the air conditioning system as recited in claim 8, the air handler heat exchanger rinse system further comprising a rinse cleaning composition delivery system, the rinse cleaning composition delivery system adapted to introduce a volume of a chemical cleaning composition into the rinse fluid.

10. An air handler of the air conditioning system as recited in claim 9, the chemical cleaning composition being at least one of: a disinfectant composition, an antibacterial composition, an antimicrobial composition, an antifungal composition, and a scented composition.

11. An air handler of an air conditioning system comprising: an air handler drain pipe providing fluid communication between a condensation collection tray of the air handler and a discharge end of the air handler drain pipe; the air handler drain pipe segmented into an upstream portion extending between the air handler and a condensation backflow check valve and a downstream portion extending between the condensation backflow check valve and the discharge end of the air handler drain pipe, the condensation backflow check valve comprising: a float activated check valve and switch enclosure, an actuator body slideably located within an interior of the float activated check valve and switch enclosure, an inlet flow control aperture and a discharge flow aperture formed proximate a first end of the actuator body formed proximate a second, opposite end of the actuator body, and a float element carried by the float activated check valve and switch actuator body; a backflow actuated switch; an automated air conditioning air handler condensation drain pipe flush system adapted to inject flush fluid into the downstream portion of the air handler drain pipe, the automated air conditioning air handler condensation drain pipe flush system comprising: a flush fluid supply pipe providing fluid communication between a flush fluid supply source and the downstream portion of the air handler drain pipe, an air handler drain pipe flush supply flow control valve arranged to control a flow of flush fluid between the flush fluid supply source and the downstream portion of the air handler drain pipe, an air handler drain pipe flush supply flow controller circuit adapted to control operation of the air handler drain pipe flush supply flow control valve; wherein the condensation backflow check valve enables flow of collected condensation between the upstream portion of the air handler drain pipe and the downstream portion of the air handler drain pipe during normal operating conditions, wherein the float element is arranged to raise the actuator body when at least one of the collected condensation and the flush fluid collects within the downstream portion of the air handler drain pipe, the raised float element positioning the actuator body to block flow between the upstream portion of the air handler drain pipe and the downstream portion of the air handler drain pipe during at least one of the following conditions: (a) when draining flow stops resulting from the drain pipe blockage, and (b) when the air handler drain pipe flush supply flow control valve is activated and flush fluid enters the downstream portion of the air handler drain pipe.

12. An air handler of the air conditioning system as recited in claim 11, the inlet flow control aperture is located to align with a passageway of the upstream portion of the air handler drain pipe during normal operating conditions.

13. An air handler of the air conditioning system as recited in claim 11, the actuator body further comprising a plurality of the inlet flow control apertures spatially arranged about a circumference of the actuator body.

14. An air handler of the air conditioning system as recited in claim 11, wherein the float element is located within an interior of the float activated check valve and switch actuator body.

15. An air handler of the air conditioning system as recited in claim 11, the air handler drain pipe flush supply flow controller circuit further comprising a microprocessor, a digital memory in signal communication with the microprocessor, and a clocking circuit in signal communication with the microprocessor.

16. An air handler of the air conditioning system as recited in claim 11, the air conditioning system further comprising a thermostat, the thermostat being adapted to control operation of the air conditioning system, wherein the air handler drain pipe flush supply flow controller circuit is provided in signal communications with the thermostat.

17. An air handler of the air conditioning system as recited in claim 11, the air handler drain pipe flush system further comprising a chemical composition injection system, the chemical composition injection system adapted to dispense a flush assisting chemical composition into the downstream portion of the air handler drain pipe to aid the flush fluid in clearing the air handler condensation drain pipe blockage within the downstream portion of the air handler drain pipe.

18. An air handler of the air conditioning system as recited in claim 11, the air handler further comprising an air handler heat exchanger rinse system, the air handler heat exchanger rinse system comprising: a heat exchanger rinse fluid delivery conduit providing fluid communication between a rinse fluid source and at least one rinse fluid delivery component positioned to dispense rinse fluid onto an air handler heat exchanger of the air handler of the air conditioning system; a rinse supply flow control valve adapted to control a flow of rinse fluid between the rinse fluid source and the at least one rinse fluid delivery component; and an air handler heat exchanger rinse system controller circuit adapted to control operation of the rinse supply flow control valve.

19. An air handler of the air conditioning system as recited in claim 18, the air handler heat exchanger rinse system further comprising a rinse cleaning composition delivery system, the rinse cleaning composition delivery system adapted to introduce a volume of a chemical cleaning composition into the rinse fluid.

20. An air handler of the air conditioning system as recited in claim 19, the chemical cleaning composition being at least one of: a disinfectant composition, an antibacterial composition, an antimicrobial composition, an antifungal composition, and a scented composition.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0121] The preferred embodiments of the invention will hereinafter be described in conjunction with the appended drawings provided to illustrate and not to limit the invention, in which:

[0122] FIG. 1 presents an elevation view of an exemplary central air conditioning system having a scent injection system integrated therewith;

[0123] FIG. 2 presents an enlarged elevation view of an exemplary air conditioning air handler having the scent injection system integrated therewith as originally presented in FIG. 1;

[0124] FIG. 3 presents a sectioned elevation view of the scent injection system;

[0125] FIG. 4 presents a sectioned elevation view of the scent injection system introducing a plurality of scent reeds;

[0126] FIG. 5 presents a sectioned elevation view of the scent injection system introducing an ultrasonic scent vaporizing system;

[0127] FIG. 6 presents a sectioned elevation view of the scent injection system introducing a first exemplary aerator vaporization assistance system;

[0128] FIG. 7 presents a sectioned elevation view of the scent injection system introducing a second exemplary aerator vaporization assistance system;

[0129] FIG. 8 presents an elevation view of an exemplary central air conditioning system having an air handler heat exchanger rinse system integrated therewith;

[0130] FIG. 9 presents a flow diagram describing an exemplary method of using the air handler heat exchanger rinse system;

[0131] FIG. 10 presents a sectioned elevation view of an exemplary automated air handler drain pipe flush system, the illustration presenting a configuration having the air conditioning system in a normal operating condition and the drain pipe flush system being shown in a standby mode;

[0132] FIG. 11 presents a sectioned elevation view of the exemplary automated air handler drain pipe flush system originally introduced in FIG. 10, the illustration presenting a configuration having an initial blockage in the air handler drain pipe and the drain pipe flush system being shown in a standby mode;

[0133] FIG. 12 presents a sectioned elevation view of the exemplary automated air handler drain pipe flush system originally introduced in FIG. 10, the illustration presenting a configuration having the blockage in the air handler drain pipe, a float valve transitioned from an open condition to a closed condition, and the drain pipe flush system being shown transitioning from a standby mode into a flush mode;

[0134] FIG. 13 presents a sectioned elevation view of the exemplary automated air handler drain pipe flush system originally introduced in FIG. 10, the illustration presenting a configuration having the float valve in the closed condition and the drain pipe flush system in a flush mode enabling flush fluid to flow towards the blockage in the air handler drain pipe to remove the blockage from within the air handler drain pipe;

[0135] FIG. 14 presents a sectioned elevation view of an exemplary enhanced automated air handler drain pipe flush system, wherein the enhanced automated air handler drain pipe flush system, as originally introduced in FIG. 10, further comprises a chemical cleaning composition injection system;

[0136] FIG. 15 presents a flow diagram describing an exemplary method of using the automated air handler drain pipe flush system;

[0137] FIG. 16 presents a flow diagram describing an exemplary alternative method of using the automated air handler drain pipe flush system;

[0138] FIG. 17 presents a sectioned elevation view of a second exemplary automated air handler drain pipe flush system, the illustration presenting a configuration having the air conditioning system in a normal operating condition and the drain pipe flush system being shown in a standby mode;

[0139] FIG. 18 presents a sectioned elevation view of the second exemplary automated air handler drain pipe flush system originally introduced in FIG. 17, the illustration presenting a configuration having an initial blockage in the air handler drain pipe and the drain pipe flush system being shown in a standby mode;

[0140] FIG. 19 presents a sectioned elevation view of the second exemplary automated air handler drain pipe flush system originally introduced in FIG. 17, the illustration presenting a configuration having the blockage in the air handler drain pipe, a float valve transitioned from an open condition to a closed condition, and the drain pipe flush system being shown transitioning from a standby mode into a flush mode;

[0141] FIG. 20 presents a sectioned elevation view of the second exemplary automated air handler drain pipe flush system originally introduced in FIG. 17, the illustration presenting a configuration having the float valve in the closed condition and the drain pipe flush system in a flush mode enabling flush fluid to flow towards the blockage in the air handler drain pipe to remove the blockage from within the air handler drain pipe;

[0142] FIG. 21 presents a bottom isometric view of a float activated check valve and switch actuator body of the second exemplary automated air handler drain pipe flush system originally introduced in FIG. 17; and

[0143] FIG. 22 presents a sectioned elevation view of an exemplary enhanced automated air handler drain pipe flush system, wherein the enhanced automated air handler drain pipe flush system, as originally introduced in FIG. 17, further comprises a chemical cleaning composition injection system.

[0144] Like reference numerals refer to like parts throughout the several views of the drawings.

DETAILED DESCRIPTION

[0145] Detailed embodiments of the present invention are disclosed herein. It will be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale, and some features may be exaggerated or minimized to show details of particular embodiments, features, or elements. Specific structural and functional details, dimensions, or shapes disclosed herein are not limiting but serve as a basis for the claims and for teaching a person of ordinary skill in the art the described and claimed features of embodiments of the present invention. The following detailed description is merely exemplary in nature and is not intended to limit the described embodiments or the application and uses of the described embodiments. As used herein, the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. All of the implementations described below are exemplary implementations provided to enable persons skilled in the art to make or use the embodiments of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims.

[0146] For purposes of description herein, the terms “upper”, “lower”, “left”, “rear”, “right”, “front”, “vertical”, “horizontal”, and derivatives thereof shall relate to the invention as oriented in FIG. 1. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification, are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.

[0147] A central air conditioning system 100 comprising a scent dispersion system 200 is illustrated in FIG. 1, with details of the system being presented in the illustration in FIGS. 2 and 3. The central air conditioning system 100 is disposed within a structure, such as a residence, an office building, a service provider building (such as a hospital), a storage facility, and any other facility. The central air conditioning system 100 includes components common to a centralized air conditioning system, including an air conditioning air handler 110, a compressor assembly 130, and an air conditioning ducting 150. The air conditioning air handler 110 and compressor assembly 130 condition the air to a desired temperature. The air conditioning ducting 150 distributes the conditioned air throughout the structure.

[0148] The compressor assembly 130 includes a compressor 134 and a compressor fan 136 integrated into a compressor housing 132. The air conditioning air handler 110 includes an air handler fan 120 and a heat exchanger 122 integrated within an air handler housing 112. The air handler housing 112 is segmented into a low pressure section 116 and a high pressure section 118 by a pressure divider wall 114. The air handler fan 120 creates a pressure gradient between the low pressure section 116 and the high pressure section 118 as referenced.

[0149] The air conditioning system utilizes a refrigerant to provide a thermal adjustment to the ambient air. The refrigerant is supplied to the compressor assembly 130 by a refrigerant supply conduit 140, and then compressed by the compressor 134. As the refrigerant is compressed, the refrigerant increases in temperature in accordance with Boyle's law (alternately referred to as the Ideal Gas law). The compressor fan 136 cools the compressed refrigerant, preferably returning to an ambient temperature. The pressurized refrigerant is transferred to the air conditioning air handler 110 by a refrigerant return conduit 142. The refrigerant expands within the heat exchanger 122. As the refrigerant expands, the refrigerant cools in accordance with Boyle's law. Ambient air passes across the heat exchanger 122. The heat exchanger 122 conditions the air temperature to the desired temperature. The conditioned air is transferred through the facility by the air handler fan 120 and the air conditioning ducting 150. The air handler fan 120 creates the airflow and the air conditioning ducting 150 distributes the conditioned air.

[0150] A trunk ducting 152 transfers the conditioned air from the air conditioning air handler 110 to a branch ducting 154. A ducting transition 156 provides fluid communication between the trunk ducting 152 and the branch ducting 154. The branch ducting 154 is routed throughout the facility to distribute the conditioned air accordingly. The conditioned air is discharged from the branch ducting 154 through a plurality of vents 158.

[0151] A scent dispersion system 200 is integrated into the air conditioning air handler 110 of the central air conditioning system. The scent dispersion system 200 comprises a scent injection assembly 210, a pressure application conduit 230 and a scent injection conduit 236. The exemplary scent injection assembly 210 includes a scent reservoir 212 and an integrated scent injection body 216, wherein it is preferably that the scent reservoir 212 is removably attached to the integrated scent injection body 216 by any reasonable mechanical interface. The scent reservoir 212 can be fabricated of a translucent or transparent material allowing a service person to view and monitor the remaining volume of a scent generating liquid 260 disposed within the scent injection assembly 210. An exemplary interface utilizes a releasable reservoir coupling 214 comprising a threaded interface. The integrated scent injection body 216 includes an inlet coupler 220 for attachment to the pressure application conduit 230 (or other integrated pressurized component, such as a post valve pressure application conduit 234 as illustrated) and a discharge coupler 224 for attachment to the scent injection conduit 236. An inlet orifice 222 is provided through the inlet coupler 220 for transference of the pressurized airflow from the high pressure section 118 into the scent injection assembly 210. A discharge orifice 226 is provided through the discharge coupler 224 for transference of the scented airflow from the scent injection assembly 210 into the low pressure section 116 for mixing with the conditioned air.

[0152] The pressure application conduit 230 obtains pressure from the high pressure section 118, which generates an airflow therethrough. Pressure is applied across a pressure application orifice 232 provided at a first end of the pressure application conduit 230. The pressure generates a pressure airflow 250, which enters the pressure application orifice 232, passes through the pressure application conduit 230 and into the scent injection assembly 210 through an inlet orifice 222. The scent generating liquid 260 steadily vaporizes forming a scent generating vapor 262. The scent generating vapor 262 mixes into the passing airflow forming a scent injection airflow 252, where the scent injection airflow 252 exits the scent reservoir 212, passing through the discharge orifice 226. The scent injection airflow 252 continues traveling along the scent injection conduit 236, exiting through the scent injection orifice 238 to enter into the low pressure section 116 of the air conditioning air handler 110. The scented air mixture combines with the conditioned air to form a scented and conditioned air mixture 254, which is distributed throughout the facility.

[0153] An optional scent operation control valve 240 can be inserted into the system segmenting the pressure application conduit 230 into a shortened pressure application conduit 230 and a post valve pressure application conduit 234. The scent operation control valve 240 can be manually operated or automated. The automated control can be operated by a timer controlling circuit, a remote control, a user directed control, a scent management circuit, and the like. The scent management circuit can determine the quantity of scent remaining in the reservoir, the amount of scent residing within the atmosphere within the facility, and the like. Alternately, a scent dispersion flow valve control 228 can be integrated into the scent injection assembly 210 to limit the exposure of the scent generating liquid 260 to the pressure airflow 250. This can include activating and deactivating the scent dispersion system 200.

[0154] The vaporization process of the scent injection assembly 210 can be enhanced in any variety of scent enhancing apparatus. The scent enhancing apparatus accelerates a process of converting a scent generating liquid 260 into a scent generating vapor 262. A first exemplary scent enhancing apparatus utilizes a plurality of scent dispersing reeds 270 as illustrated in FIG. 4. The scent dispersing reeds 270 are positioned placing one end of each scent dispersing reed 270 into the scent generating liquid 260 and leaving an opposite end of the scent dispersing reed 270 exposed within the air. An optional reed seating recession 272 can be included within a bottom of the scent reservoir 212. The lower end of the reeds 270 can be positioned in the reed seating recession 272 to direct the reeds into an outward fanning configuration as illustrated. The scent generating liquid 260 is drawn upwards through pores of the scent dispersing reed 270. The rate of evaporation is a function of the surface area between the fluid and the air. The effective surface area is increased as the scent generating liquid 260 is drawn upwards along the reeds using both surface tension and the porosity of the scent dispersing reed 270, thus increasing the effective surface area between the fluid and the surrounding air within the scent injection assembly 210. One of the benefits of the scent dispersing reeds 270 is the lack of any power requirement. The reeds 270 should be replaced on a regular basis, causing some basic maintenance.

[0155] A second exemplary scent enhancing apparatus utilizes an ultrasonic system to vaporize the scent generating liquid 260 as illustrated in FIG. 5. The ultrasonic vaporization system can be of any configuration known by those skilled in the art. The exemplary ultrasonic vaporization system includes an ultrasonic system controller 280 in electric and fluid communication with an ultrasonic scent disbursement head 282. An electrical interface 284 provides electrical communication between the ultrasonic system controller 280 and the ultrasonic scent disbursement head 282. A fluid conduit 286 provides fluid communication between the ultrasonic system controller 280 and the ultrasonic scent disbursement head 282. Power can be provided by a continuous external power source, such as an electrical outlet and a power cord (not shown but well understood) or by utilizing an integrated battery (not shown but well understood). The power can be governed by the same power source controlling the operation of the air conditioning air handler 110. A timer can be included in the power circuit to control the operating vaporization time of the ultrasonic vaporization system. The ultrasonic system controller 280 transfers scent generating liquid 260 from the base of the scent reservoir 212 to the ultrasonic scent disbursement head 282. A controller circuit (not shown, but well known by those skilled in the art) operates the ultrasonic scent disbursement head 282 converting the liquid into a vapor. More specifically, the ultrasonic scent disbursement head 282 converts the scent generating liquid 260 into a vaporized scent 288. The system can be integrated into a single assembly. The system would preferably include a floatation element to maintain a vaporization surface proximate a liquid surface.

[0156] A third exemplary scent enhancing apparatus aerates the scent generating liquid 260. The aeration process can be provided by any known by those skilled in the art. A first exemplary aeration system 300 directs the pressure airflow 250 into the scent generating liquid 260 as illustrated in FIG. 6. The pressure airflow 250 is communicated downward via an aerator 300 and discharges into a lower region of the stored volume of scent generating liquid 260. The aerator 300 is fabricated having an aerating conduit 310. The aerating conduit 310 can be of any form factor that discharges the pressure airflow 250 into the scent generating liquid 260. In one form factor, the aerating conduit 310 can be flexible, with the discharge orifice of the aerating conduit 310 being attached to a floatation device, maintaining the discharge orifice at a constant level respective to the scent generating liquid surface. In a second form factor, the aerating conduit 310 can be directed downward, curving upwards at an aerating conduit lower apex 312. A backflow prevention device 320 can be disposed at the discharge orifice. The backflow prevention device 320 redirects the aerator discharge port 322 downward, allowing air pressure to prevent intrusion of the scent generating liquid 260 into the aerating conduit 310. At least one check valve, such as a scent injection assembly upper check valve 340 or a scent injection assembly lower check valve 342 can be integrated into the aerator 300 to further aid in controlling and minimizing any backflow. The pressure airflow 250 discharges from the aerator discharge port 322 into the scent generating liquid 260. The gaseous discharge aerates the scent generating liquid 260. The aeration increases the rate of vaporization of the scent generating liquid 260. The backflow prevention features minimize a need to displace any scent liquid that could have collected within the aerating conduit 310.

[0157] A second exemplary aerator 400 utilizes a rotational assembly comprising at least one aerating blade assembly 460 for aerating the scent generating liquid 260 as illustrated in FIG. 7. The aerator 400 comprises an aerating conduit 410 for directing airflow 250 to rotationally drive an aerating assembly. A scent injection assembly upper check valve 440 can be integrated into the aerating conduit 410 to control any potential backflow of the scent generating liquid 260 into the aerating conduit 410. The aerating assembly comprises an aerator shaft 450 rotationally assembled to the scent injection assembly 210 in any reasonably known rotational interface. The exemplary embodiment integrates a lower shaft bearing 452 at a lower end of the aerator shaft 450 and an upper shaft bearing 454 at an upper end of the aerator shaft 450. The lower shaft bearing 452 is positioned against a lower apex of the scent reservoir 212. The upper shaft bearing 454 is located against an interior surface of an upper member of the integrated scent injection body 216, vertically orienting the aerator shaft 450. At least one aerating blade assembly 460 is assembled to the aerator shaft 450. The aerating blade assembly 460 should be balanced about the aerator shaft 450 to avoid any unwarranted vibrations. It is preferred that a plurality of aerating blade assemblies 460 be assembled to the aerator shaft 450 in a spatial arrangement. The lowest aerating blade assembly 460 should be located proximate the bottom of the scent reservoir 212, optimizing the aeration of the scent generating liquid 260. A drive blade assembly 462 is assembled to the aerator shaft 450 at a position to receive pressure airflow 250 from the aerating conduit 410. The pressure airflow 250 passes across the drive blade assembly 462 causing the drive blade assembly 462 to rotate. The rotational motion of the drive blade assembly 462 is transferred to the aerator shaft 450, which rotates the at least one aerating blade assembly 460. The rotational motion of the aerating blade assembly 460 aerates the scent generating liquid 260 creating generated scented air bubbles 264. The generated scented air bubbles 264 rise to the surface and combine with passing airflow, forming the scent injection airflow 252.

[0158] Although the primary disclosure presents a scent dispersion system, it is understood that a disinfectant may be utilized ether in place of or in conjunction with the scent generating liquid 260.

[0159] The scent dispersion system 200 can be integrated into any air conditioning system, including automotive applications, trains, planes, and the like. The pressure application orifice 232 would be placed in an upstream region of a heat exchanger/air movement fan or blower and the scent injection orifice 238 would be placed in a position downward from the fan, drawing the scented air inward.

[0160] The air conditioning air handler 110 includes an air handler heat exchanger 122. Any dust, lint, debris; or other contamination; condensation build up; and the like upon the air handler heat exchanger 122 can affect the efficiency of the air conditioning system 100. A heat exchanger rinse system 500, introduced in FIG. 8, provides an automated rinsing system to remove any dust, lint, debris; or other contamination; condensation build up; and the like from the air handler heat exchanger 122. The heat exchanger rinse system 500 delivers a rinsing fluid (represented by an arrow as the flow from a rinse cleaning composition delivery system 530) to the air handler heat exchanger 122. In the exemplary embodiment, the heat exchanger rinse system 500 includes a heat exchanger rinse fluid delivery conduit 510 configured to transfer the rinsing fluid from a heat exchanger rinse fluid source 560 to at least one heat exchanger rinse fluid delivery component 512 assembled to a delivery end of the heat exchanger rinse fluid delivery conduit 510. A heat exchanger rinse supply flow control valve 520 is installed at a location along the heat exchanger rinse fluid delivery conduit 510 between the heat exchanger rinse fluid source 560 and the heat exchanger rinse fluid delivery component 512. The heat exchanger rinse supply flow control valve actuator 522 controls the operation of the heat exchanger rinse supply flow control valve 520. Operation of the heat exchanger rinse supply flow control valve 520 enables and disables flow between the heat exchanger rinse fluid source 560 and the heat exchanger rinse fluid delivery component 512. Operation of the heat exchanger rinse supply flow control valve 520 can be provided by an air handler heat exchanger rinse system controller circuit 550. The air handler heat exchanger rinse system controller circuit 550 could operate independently or in conjunction with an air conditioning thermostat 180.

[0161] The air handler heat exchanger rinse system controller circuit 550 would preferably include a microprocessor 552, a non-volatile digital memory 554 in signal communication with the microprocessor 552, and a clocking circuit 556 in signal communication with the microprocessor 552. The microprocessor 552 would operate in accordance to an instruction set, wherein the instruction set would be resident on either the microprocessor 552 or the non-volatile digital memory 554. The clocking circuit 556 provides digital clocking or timing information to the microprocessor 552.

[0162] The air conditioning thermostat 180 would preferably include an air conditioning thermostat microprocessor 182, an air conditioning thermostat thermometer 184 in signal communication with the air conditioning thermostat microprocessor 182, and an air conditioning thermostat system controller 186 in signal communication with the air conditioning thermostat microprocessor 182 and the operating components of the air conditioning system 100. The air conditioning thermostat microprocessor 182 would operate in accordance to an instruction set, wherein the instruction set would be resident on either the air conditioning thermostat microprocessor 182 or a non-volatile digital memory device (not shown).

[0163] The air handler heat exchanger rinse system controller circuit 550 can be configured to receive signals from the air conditioning thermostat 180 and direct actions based upon the signals received from the air conditioning thermostat 180.

[0164] An optional rinse cleaning composition delivery system 530 can be integrated into the heat exchanger rinse system 500. The rinse cleaning composition delivery system 530 would preferably be configured to inject a chemical cleaning composition 536 into the rinse fluid during the rinsing cycle. The rinse cleaning composition delivery system 530 would be located along the heat exchanger rinse fluid delivery conduit 510 between the sourcing end of the heat exchanger rinse fluid delivery conduit 510 and the delivery end of the heat exchanger rinse fluid delivery conduit 510. In the exemplary configuration, the rinse cleaning composition delivery system 530 is located between the heat exchanger rinse supply flow control valve 520 and the delivery end of the heat exchanger rinse fluid delivery conduit 510.

[0165] The rinse cleaning composition delivery system 530 would include a rinse cleaning composition reservoir 532 for containing a volume of the chemical cleaning composition 536. Access to the rinse cleaning composition reservoir 532 can be provided by an aperture, wherein the aperture would be accessed and sealed by a rinse cleaning composition reservoir fill cap 534. A rinse cleaning composition supply valve 540 would be integrated between the rinse cleaning composition reservoir 532 and the heat exchanger rinse fluid delivery conduit 510, wherein the rinse cleaning composition supply valve 540 governs retention and delivery of the chemical cleaning composition 536 within and from, respectively, into the heat exchanger rinse system 500. The rinse cleaning composition supply valve 540 would be operated in accordance with a signal provided to a rinse cleaning composition supply valve actuator 542. A rinse cleaning composition supply valve coupling element 544, such as a piping T, can be included to place the rinse cleaning composition supply valve 540 in fluid communication with the heat exchanger rinse fluid delivery conduit 510.

[0166] An exemplary operation of the heat exchanger rinse system 500 is described in an air handler heat exchanger rinse process 1000 presented in FIG. 9. The process initiates with a cycling of the air conditioner (step 1010). The air conditioner would turn on when the area reaches a predetermined temperature, run to either cool or heat the area, then when the area reaches a predetermined temperature, turn off. When cooling, the air conditioner would turn on when the room temperature reaches a preset high temperature setting and would turn off when the when the room temperature reaches a preset low temperature setting. Conversely, when heating, the air conditioner would turn on when the room temperature reaches a preset low temperature setting and would turn off when the when the room temperature reaches a preset high temperature setting.

[0167] The air handler heat exchanger rinse system controller circuit 550 would be programmed to activate the system based upon any of a variety of conditions (decision step 1020). In one exemplary condition, the air handler heat exchanger rinse system controller circuit 550 would activate the system based upon a predetermined number of operating cycles of the air conditioning system 100. The cycles would be identified by a communication link between the air handler heat exchanger rinse system controller circuit 550 and the air conditioning thermostat 180. The air handler heat exchanger rinse system controller circuit 550 can be programmed to activate the system 500 after each cycle, after every other cycle, after any predetermined quantity of cycles, or randomly. In a second exemplary condition, the air handler heat exchanger rinse system controller circuit 550 would activate the system 500 based upon a predetermined time span, such as once a day, once every other day, once every predetermined number of days, once a week, once every two weeks, once a month, once every other month, randomly, or any other suitable setting. In a third exemplary condition, the air handler heat exchanger rinse system controller circuit 550 would activate the system 500 based upon a predetermined number of operating cycles of the air conditioning system 100 and based upon a predetermined time span, whichever is shorter or whichever is longer, all dependent upon the user's desired settings.

[0168] Upon activation of the heat exchanger rinse system 500, the air handler heat exchanger rinse system controller circuit 550 would transmit an actuation signal to the heat exchanger rinse supply flow control valve actuator 522 to actuate the heat exchanger rinse supply flow control valve 520. The heat exchanger rinse supply flow control valve 520 would move into an open state (step 1030), allowing flow of rinse fluid from a heat exchanger rinse fluid source 560 to a delivery end of the heat exchanger rinse fluid delivery conduit 510. The rinse fluid would be dispensed onto the air handler heat exchanger 122 through the at least one heat exchanger rinse fluid delivery component 512, referenced as a heat exchanger rinse application 562 (step 1036).

[0169] The heat exchanger rinse system 500 can include an optional rinse cleaning composition delivery system 530. The air handler heat exchanger rinse system controller circuit 550 can direct the rinse cleaning composition delivery system 530 to dispense and introduce a chemical cleaning composition 536 into the rinse fluid by actuating or opening the rinse cleaning composition supply valve 540 (step 1034). The air handler heat exchanger rinse system controller circuit 550 would transmit an actuation signal to the rinse cleaning composition supply valve actuator 542 to actuate the rinse cleaning composition supply valve 540. Operation of the rinse cleaning composition supply valve 540 can be determined by a programming of the air handler heat exchanger rinse system controller circuit 550. In one example, operation of the rinse cleaning composition supply valve 540 can synchronized with the operation of the heat exchanger rinse supply flow control valve 520. The rinse cleaning composition supply valve 540 can be closed prior to the closure of the heat exchanger rinse supply flow control valve 520 enabling the rinse fluid to rinse off any of the applied chemical cleaning composition 536. In a second example, operation of the rinse cleaning composition supply valve 540 can based upon a cycle count of the operation of the heat exchanger rinse supply flow control valve 520. The cycle count can be each operation of the heat exchanger rinse supply flow control valve 520, every other operation of the heat exchanger rinse supply flow control valve 520, or every nth operation of the heat exchanger rinse supply flow control valve 520. Alternatively, operation of the rinse cleaning composition supply valve 540 can be based upon a predetermined time span, such as once a day, once every other day, once every predetermined number of days, once a week, once every two weeks, once a month, once every other month, randomly, or any other suitable setting. The rinse cleaning composition delivery system 530 can include a device to monitor the stored volume or inventory of the chemical cleaning composition 536. The air handler heat exchanger rinse system controller circuit 550 can include an indicator to identify when the volume or inventory of the chemical cleaning composition 536 reaches a predetermined level to inform a service person of a need to replenish the chemical cleaning composition 536 within the rinse cleaning composition reservoir 532. The chemical cleaning composition 536 can include a bleach based composition, an antibacterial element, an antifungal element, and the like.

[0170] The heat exchanger rinse system 500 would apply the rinse fluid (with or without the chemical cleaning composition 536) until the air handler heat exchanger rinse system controller circuit 550 determines the rinse cycle is complete (decision step 1040). This can be based upon a pre-established time period, a volume of applied rinse fluid, monitoring clarity of the rinse fluid discharged from the air handler heat exchanger 122, and the like. Once the air handler heat exchanger rinse system controller circuit 550 determines that the rinse cycle is complete (decision step 1040), the air handler heat exchanger rinse system controller circuit 550 de-actuates or closes the heat exchanger rinse supply flow control valve 520 and, when applicable, the rinse cleaning composition supply valve 540. The heat exchanger rinse application 562 would be collected in the condensation collection tray 168 located at the base of the air handler housing 112 and drain through the air handler drain pipe 162. During the rinse process, the air handler heat exchanger rinse system controller circuit 550 would direct the air conditioning thermostat 180 to maintain the air conditioning system 100 in an inactive state. Upon completion of the rinse process, the system returns the air conditioning system 100 to a standard operating mode.

[0171] Condensation generated during operation of the air conditioning air handler 110 is collected by a condensation collection element, such as a condensation collection tray 168. The collected condensation 801 (FIGS. 10-14) is discharged through an air handler drain pipe 162. The air handler drain pipe 162 is assembled to the air conditioning air handler 110 by an air handler drain pipe connector 160. The air handler drain pipe 162 is known to become clogged over time. Debris, lint, organic growth, and the like can accumulate within the air handler drain pipe 162 over time, creating an air handler condensation drain pipe blockage 899. An automated air handler drain pipe flush system 600 is adapted to dislodge blockages 899 formed within the air handler drain pipe 162, as illustrated in FIGS. 10 through 14. The air handler condensation drain pipe blockage 899 can block flow of collected condensation 801 discharged from air handler 110.

[0172] The automated air handler drain pipe flush system 600 includes a float valve actuator assembly 700 inserted in fluid communication between the air handler drain pipe 162 and a series of piping sections forming a downstream portion of an air handler drain pipe 610, 612, 614, 616. A flush fluid supply system (including an air handler drain pipe flush supply flow control valve 760 which controls flow from a flush fluid supply source 850 of FIG. 10) is integrated into the downstream portion of the air handler drain pipe 610, 612, 614, 616, wherein the flush fluid supply system delivers a volume and flow of a flush fluid 841 (stationary fluid provided by the flush fluid supply line source 850 (FIG. 11) and flowing flush fluid 841 provided by the flush supply line source flow 840 (FIG. 13)) into the downstream portion of the air handler drain pipe 610, 612, 614, 616, preferably at a location proximate an outlet (referenced as a float switch discharge coupler 728) of the float valve actuator assembly 700. The flush fluid supply source 850 is preferably provided using existing plumbing used to supply water from a water source “B” throughout the structure. The injection point of the flush fluid supply system is preferably located at a location that would be downstream or following of a check valve (provided by float element 730 engaging and disengaged with a float valve ring seal 715 located within the float valve actuator enclosure 710) and upstream or prior to any air handler condensation drain pipe blockage 899 (introduced in FIG. 11).

[0173] In more detail, the float valve actuator assembly 700 includes a float assembly 730, 732, 734 configured to act as a valve (as shown) or actuate a valve (understood by description). The float assembly can include a float element 730, a float actuator column 732 extending radially or vertically upward from the float element 730, and a float actuator plate 734 adapted to engage with an operate a backflow actuated switch 740. A float valve seal 715 or in the illustrative example, a float valve ring seal 715 is supported by a float valve ring 714. The float valve ring 714 is a solid ring extending radially inward from an interior sidewall of the float valve actuator enclosure 710. A float valve ring seal 715 is formed circumscribing an interior circumference of the ring formed by the float valve ring 714. The float valve ring seal 715 and the float valve ring 714 are designed to create a fluid impervious seal when the float element 730 is seated against the float valve ring seal 715. A float valve lower control arm 716 and a float valve upper control arm 718 extend radially outward from the interior sidewall of the float valve actuator enclosure 710. A float valve lower control arm guide aperture 717 is formed through the float valve lower control arm 716. Similarly, a float valve upper control arm guide aperture 719 is formed through the float valve upper control arm 718. The float valve lower control arm guide aperture 717 and the float valve upper control arm guide aperture 719 are located to be in vertical registration with the float actuator column 732. It is preferred that the float valve lower control arm guide aperture 717, the float valve upper control arm guide aperture 719, and the float actuator column 732 be located centrally through an opening defined by the float valve ring seal 715. The float valve upper control arm 718 can be located above the air handler drain pipe 162, and provide a fluid impervious seal, protecting the backflow actuated switch 740 from contact with water.

[0174] A float body support member 712 can extend upward from a lower surface of the float valve actuator enclosure 710 (as shown) or radially inward from the interior sidewall of the float valve actuator enclosure 710. A float body support member contact surface 713 is formed about an upper surface of the float body support member 712, wherein the float body support member contact surface 713 is adapted to support the float element 730 during draining flow of collected condensation 801 from the air conditioning air handler 110, through the air handler drain pipe 162. The float body support member 712 would be designed to allow passage of the draining collected condensation 801 (provided from air handler condensation source flow 800) from the air handler drain pipe 162, through the float body support member 712 (air handler condensation float valve bypass flow 802) and to the air handler drain pipe 610.

[0175] During normal, unblocked flow, as illustrated in FIG. 10, the draining collected condensation 801 would continue to flow from the upstream drain connection pipe section 610, through the flush fluid supply system connecting adapter 774 into the downstream drain connection pipe section 612 (air handler condensation pre-J trap drain flow 804), about the J trap drain pipe section 614 (air handler condensation J trap drain flow 806), through the downstream drain pipe section 616 (air handler condensation post J trap drain flow 808) and discharging as an air handler condensation drain discharge flow 809 to a distal drain discharge location or a drain pipe distal end 618. A portion of the draining collected condensation 801 might attempt to flow into the downstream flush fluid supply pipe 772, but would be blocked (air handler flush valve drain flow return 820).

[0176] The flush fluid supply pipe 770, 772 injects a flush fluid from a flush fluid supply line source 850 into the air handler drain pipe 610, 612, 614, 616. An air handler drain pipe flush supply flow control valve 760 is assembled between the upstream flush fluid supply pipe 770 and the downstream flush fluid supply pipe 772. The air handler drain pipe flush supply flow control valve 760 controls the flow of the flush fluid 841 from the flush fluid supply line source 850 into the air handler drain pipe 610, 612, 614, 616. An air handler drain pipe flush supply flow control valve operating element 762 of the air handler drain pipe flush supply flow control valve 760 is toggled between a closed configuration and an open configuration by a signal provided from an air handler drain pipe flush supply flow controller circuit 750 to an air handler drain pipe flush supply flow control valve controller 764.

[0177] The air handler drain pipe flush supply flow controller circuit 750 controls the operation of the automated air handler drain pipe flush system 600. The air handler drain pipe flush supply flow controller circuit 750 is similar to the air handler heat exchanger rinse system controller circuit 550. The air handler drain pipe flush supply flow controller circuit 750 includes a microprocessor 752, a non-volatile digital memory device 754 in digital signal communication with the microprocessor 752, and a clocking circuit 756 in digital signal communication with the microprocessor 752.

[0178] In one configuration, the air handler drain pipe flush supply flow controller circuit 750 can be in digital signal communication with the backflow actuated switch 740 to utilize the float valve actuator assembly 700 to determine when to utilize the automated air handler drain pipe flush system 600. The backflow actuated switch 740 can be mounted to a float switch mount 744 within the float valve actuator enclosure 710, or external to the float valve actuator enclosure 710, with the float switch actuator arm 742 being in operational engagement with the float actuator plate 734. The float element 730 would rise upward when an air handler condensation drain pipe blockage 899 forms within the air handler drain pipe 610, 612, 614, 616. The draining collected condensation 801 would back up, lifting the float element 730. The lifted float element 730 would engage with and move the float switch actuator arm 742, which would actuate the backflow actuated switch 740, toggling an electrical state from a closed circuit to an open circuit or an open circuit to a closed circuit. The change in state of the switch is monitored by the microprocessor 552 of the air handler heat exchanger rinse system controller circuit 550. The air handler heat exchanger rinse system controller circuit 550 would act accordingly.

[0179] In a second configuration, the air handler drain pipe flush supply flow controller circuit 750 can be in digital signal communication with the air handler float switch assembly 170 to determine when to utilize the automated air handler drain pipe flush system 600. The air handler float switch assembly 170 comprises a float element 172 and a float operated switch 174. The float element 172 controls a state of the float operated switch 174. The float element 172 of the air handler float switch assembly 170 would rise as condensation is collected on the condensation collection tray 168 located at the base of the air conditioning air handler 110 and lower when collected condensation 801 is discharged from the condensation collection tray 168. The electrical state provided by the float operated switch 174 within the air handler float switch assembly 170 would toggle from a closed circuit to an open circuit or an open circuit to a closed circuit. The change in state of the float operated switch 174 is monitored by the microprocessor 552 of the air handler heat exchanger rinse system controller circuit 550. The air handler heat exchanger rinse system controller circuit 550 would act accordingly. In another configuration, the air handler drain pipe flush supply flow controller circuit 750 can be in digital signal communication with the air conditioning thermostat 180 to utilize cycles of the air conditioning system 100 to determine when to cycle the automated air handler drain pipe flush system 600. In this configuration, the air handler drain pipe flush supply flow controller circuit 750 would operate in a manner similar to the way the air handler heat exchanger rinse system controller circuit 550 operates as described above.

[0180] In one example, the air handler float switch assembly 170 can be a RULE-A-MATIC® Bilge Pump Float Switch manufactured by RULE®. A second example is a float located within a substantially vertically oriented tube, such as a SAFE-T-SWITCH® manufactured by Rectorseal Corp.

[0181] An example of a method of operation of the automated air handler drain pipe flush system 600 is illustrated in FIGS. 10 through 14. The automated air handler drain pipe flush system 600 is shown in a normal operating configuration in FIG. 10. The float element 730 is seated upon the float body support member contact surface 713. Collected condensation 801 creates an air handler condensation source flow 800, which flows from the air conditioning air handler 110 into the air handler drain pipe 162, shown by link A as a continuation from the section of air handler drain pipe 162 shown in each of FIGS. 1, 2, and 8. The air handler condensation source flow 800 continues flowing through the float valve actuator assembly 700, transferring from the float valve actuator enclosure 710 to the air handler drain pipe 610, 612, 614, 616. More specifically, the collected condensation 801 flows through passageways formed within the float body support member 712 (identified as an air handler condensation float valve bypass flow 802), passing across the flush fluid supply system connecting adapter 774 (identified as an air handler condensation pre-J trap drain flow 804), continuing through the J trap drain pipe section 614 (identified as an air handler condensation J trap drain flow 806), through the downstream drain pipe section 616 (identified as an air handler condensation post J trap drain flow 808), and discharging at a distal opening of the downstream drain pipe section 616 as an air handler condensation drain discharge flow 809. Any collected condensation 801 attempting to flow through the downstream flush fluid supply pipe 772 would be blocked (identified as an air handler flush valve drain flow return 820) by the air handler drain pipe flush supply flow control valve operating element 762 of the air handler drain pipe flush supply flow control valve 760 oriented into a closed configuration. The flush fluid supply line source 850 is also blocked by the air handler drain pipe flush supply flow control valve operating element 762 of the air handler drain pipe flush supply flow control valve 760 oriented into a closed configuration (identified as a blocked flush fluid supply line source 852).

[0182] The automated air handler drain pipe flush system 600 is shown having an air handler condensation drain pipe blockage 899 blocking any flow of draining collected condensation 801 in FIG. 11. The exemplary automated air handler drain pipe flush system 600 includes a J trap drain pipe section 614. The inclusion of the J trap drain pipe section 614 is designed to attempt to trap any air handler condensation drain pipe blockage 899 therein. It is noted that the air handler condensation drain pipe blockage 899 can be lodged anywhere along a length of the air handler drain pipe 610, 612, 614, 616, with or without the J trap drain pipe section 614. Once the air handler condensation drain pipe blockage 899 collects enough debris or other contaminants to block the flow of draining collected condensation 801, the flow of collected condensation 801 stops, as illustrated by an air handler condensation J trap drain flow stoppage 816.

[0183] The blocked flow (identified by an air handler condensation drain discharge flow stoppage 810, air handler condensation float valve bypass flow stoppage 812, air handler condensation pre-J trap drain flow stoppage 814, and the air handler condensation J trap drain flow stoppage 816) would collect the draining collected condensation 801 in the air handler drain pipe 610, 612, 614 upstream of the air handler condensation drain pipe blockage 899, as illustrated in FIG. 12. A portion of the draining collected condensation 801 might be collected within the downstream flush fluid supply pipe 772 (referred to as an air handler flush valve drain flow return stoppage 830).

[0184] The collecting draining condensation 801 would raise the float element 730. The rising float element 730 would contact the float switch actuator arm 742 and actuate the float operated switch 740, toggling the associated electrical switch therein. The toggled electrical state of the float operated switch 740 would signal the air handler drain pipe flush supply flow controller circuit 750 to activate the air handler drain pipe flush supply flow control valve controller 764. The activated air handler drain pipe flush supply flow control valve controller 764 would rotate the air handler drain pipe flush supply flow control valve operating element 762 from a closed configuration (FIG. 12) into an open configuration (FIG. 13), as indicated by the rotating arrow in FIG. 12.

[0185] Once the air handler drain pipe flush supply flow control valve 760 is actuated and placed into an open configuration (FIG. 13), the flush supply line source flow 840 supplies a pressure created by a volume and flow of a flush fluid 841 from the upstream flush fluid supply pipe 770 (identified as a flush supply line upstream flow 842), through the air handler drain pipe flush supply flow control valve 760, continuing through the downstream flush fluid supply pipe 772 (identified as a flush supply line downstream flow 843), diverging at the flush fluid supply system connecting adapter 774 in an upstream flow (identified as a flush valve actuating flow 845) and a downstream flow (identified as a flush pre-J trap drain flow 844) to the downstream drain connection pipe section 612 (identified as a flush J trap drain flow 846), through the J trap drain pipe section 614 (identified as a flush J trap drain flow 846) and through the downstream drain pipe section 616 (identified as a flush post J trap drain flow 848) forcing the air handler condensation drain pipe blockage 899 downward along the air handler piping 610, 612, 614, 616 until the air handler condensation drain pipe blockage 899 is forced out thereof.

[0186] The air handler drain pipe flush supply flow controller circuit 750 can cycle the air handler drain pipe flush supply flow control valve 760 to determine if the air handler condensation drain pipe blockage 899 has been dislodged. In a condition where flow from the flush supply line source flow 840 ceases and the air handler condensation drain pipe blockage 899 remains, the entrapped volume of flush fluid 841 would retain the float element 730 in a sealed state, retaining the electrical state of the float operated switch 740. Alternatively, in a condition where flow from the flush supply line source flow 840 ceases and the air handler condensation drain pipe blockage 899 is substantially dislodged, the entrapped volume of flush fluid 841 would flow outward from the downstream drain pipe section 616, removing the floating support of the float element 730, toggling the electrical state of the float operated switch 740. The air handler drain pipe flush supply flow controller circuit 750 would monitor the state of the float operated switch 740 to determine if the air handler condensation drain pipe blockage 899 has been dislodged. If the air handler condensation drain pipe blockage 899 has not been dislodged, the air handler drain pipe flush supply flow controller circuit 750 would re-actuate the air handler drain pipe flush supply flow control valve 760, opening the air handler drain pipe flush supply flow control valve operating element 762 to repeat the flush cycle. If the air handler condensation drain pipe blockage 899 has been dislodged, the air handler drain pipe flush supply flow controller circuit 750 would return to a blockage monitoring state.

[0187] The automated air handler drain pipe flush system 600 can optionally include a chemical composition injection system 900, as illustrated in FIG. 14. The chemical composition injection system 900 is similar to the rinse cleaning composition delivery system 530 of the heat exchanger rinse system 500. The chemical composition injection system 900 would be adapted to inject a flush assisting chemical composition 950 into the flush fluid 841 through a chemical composition injection system coupling T 974 or any other similar adaptor. The chemical composition injection system coupling T 974 would preferably be located between the air handler drain pipe flush supply flow control valve 760 and the flush fluid supply system connecting adapter 774 to ensure that the flush assisting chemical composition 950 is injected into the air handler drain pipe 610, 612, 614, 616 at a location within prior to the air handler condensation drain pipe blockage 899 so the flush fluid supply line source 850 can provide the proper affect to the air handler condensation drain pipe blockage 899. A volume of the flush assisting chemical composition 950 can be stored within a chemical composition container 910. Access to fill the chemical composition container 910 would be provided by an aperture sealed by a chemical composition container lid 912. Dispensing of the flush assisting chemical composition 950 into the flush fluid delivery system would be controlled by a chemical composition injection flow control valve 960. A chemical composition injection flow control valve operating element 962 within the chemical composition injection flow control valve 960 would be operated by a chemical composition injection flow control valve controller 964. A monitor (not shown) can be included to monitor the currently stored volume of flush fluid supply line source 850 within the air handler condensation drain discharge flow stoppage 810 to inform a user when the volume of flush fluid supply line source 850 needs to be replenished.

[0188] An exemplary operation of the automated air handler drain pipe flush system 600 is outlined in a lair conditioning system 100 presented in FIG. 15. Operation of the automated air handler drain pipe flush system 600 is based upon use of the air conditioning system 100 (step 1110). During operation of the air conditioning system 100 (step 1110), condensation 801 collects in a condensation collection element 168 (illustrated as a condensation collection tray 168) located at a bottom of the air conditioning air handler 110. The collected condensation 801 drains through the air handler drain pipe connector 160 and the air handler or condensation collection drain pipe 162. The air handler drain pipe flush supply flow controller circuit 750 monitors the system to determine when an air handler condensation drain pipe blockage 899 forms within the air handler drain pipe 610, 612, 614, 616, blocking flow of the draining collected condensation 801 (decision step 1020).

[0189] Upon an indication of an air handler condensation drain pipe blockage 899, the air handler drain pipe flush supply flow controller circuit 750 would send a signal to the air handler drain pipe flush supply flow control valve controller 764 to actuate the air handler drain pipe flush supply flow control valve 760, causing the air handler drain pipe flush supply flow control valve operating element 762 to toggle from a closed configuration (FIGS. 10 through 12) to an open configuration (FIG. 13) (step 1130). By opening the air handler drain pipe flush supply flow control valve 760, a volume of flush fluid 841 is enabled from flow the flush supply line source flow 840 to a location of the air handler condensation drain pipe blockage 899 within the air handler drain pipe 610, 612, 614, 616 to apply a pressure against the air handler condensation drain pipe blockage 899. As the flush fluid 841 enters the piping, a portion of the flush fluid 841 can flow upstream (identified as flush valve actuating flow 845), ensuring the float valve actuator assembly 700 is closed (step 1132). The flush fluid 841 would raise the float element 730 against the float valve ring seal 715, creating a fluid impervious seal. The float element 730 might seal against the float valve ring seal 715 simply from backflow of the flowing collected condensation 801. The combination of the float element 730 and the float valve ring seal 715 assembled within the float valve actuator enclosure 710 provides a function of a condensation backflow check valve (710, 715, 730) and can be referred to as such.

[0190] When available, the air handler drain pipe flush supply flow controller circuit 750 would actuate the chemical composition injection flow control valve 960 (step 1134), dispensing a volume of flush assisting chemical composition 950 to combine with the flush fluid 841 to aid in dislodging and clearing the air handler condensation drain pipe blockage 899. The air handler drain pipe flush supply flow controller circuit 750 can control the dispensing of the flush assisting chemical composition 950 over the entire flush cycle (step 1136), a portion of the flush cycle, over a predetermined time, to dispense a predetermined volume of flush assisting chemical composition 950, and the like. In a preferred operation, the chemical composition injection flow control valve 960 would dispense the flush assisting chemical composition 950 during an initial portion of a flush cycle and cease dispensing during a latter portion of the flush cycle, enabling the flush fluid 841 to rinse any residual flush aiding chemical composition from the air handler drain pipe 610, 612, 614, 616.

[0191] The flow of the flush fluid 841 would apply a pressure against the air handler condensation drain pipe blockage 899 to clear the air handler condensation drain pipe blockage 899 from the air handler drain pipe 610, 612, 614, 616 (step 1136), as shown in FIG. 13. The flush process can be applied based upon a period of time, based upon a volume of flush fluid 841, based upon a change in pressure, and the like. Once the flush process reaches a predetermined termination point, the air handler drain pipe flush supply flow controller circuit 750 closes the air handler drain pipe flush supply flow control valve 760. The air handler drain pipe flush supply flow controller circuit 750 would monitor the status of the air handler condensation drain pipe blockage 899 by obtaining signals from the float operated switch 740, the air handler float switch assembly 170, any pressure within the air handler drain pipe 610, 612, 614, 616, or any other method to determine the status of the air handler condensation drain pipe blockage 899 therein (decision step 1140). In one example, when the air handler condensation drain pipe blockage 899 is cleared, the flush fluid 841 would flow through the discharge orifice located at the drain pipe distal end 618 of the downstream drain pipe section 616. This would relieve pressure or remove the flush fluid 841 from within the float valve actuator enclosure 710, this separating the float actuator plate 734 from the float switch actuator arm 742. This toggles the status of the float operated switch 740, indicating that the air handler condensation drain pipe blockage 899 is cleared. The air handler drain pipe flush supply flow controller circuit 750 would use the acquired signal information to determine if the air handler condensation drain pipe blockage 899 is cleared. In a condition where the air handler drain pipe flush supply flow controller circuit 750 determines that the air handler condensation drain pipe blockage 899 is cleared, the air handler drain pipe flush supply flow controller circuit 750 would proceed in closing the air handler drain pipe flush supply flow control valve operating element 762 of the air handler drain pipe flush supply flow control valve 760 and, when applicable, closing the chemical composition injection flow control valve operating element 962 of the chemical composition injection flow control valve 960 (step 1150).

[0192] An alternative operation of the automated air handler drain pipe flush system 600, referenced as an air handler drain clog flush process 1102, is presented in FIG. 16. The distinguishing operation between the air handler drain clog flush process 1102 and the lair conditioning system 100 is that the air handler drain clog flush process 1102 employs a proactive decision step (decision step 1020) to initiate an operation of the automated air handler drain pipe flush system 600. In accordance with the air handler drain clog flush process 1102, operation of the automated air handler drain pipe flush system 600 is based upon a number of cycles of the air conditioning system 100 (decision step 1020).

[0193] In one exemplary condition, the air handler drain pipe flush supply flow controller circuit 750 would activate the system based upon a predetermined number of operating cycles of the air conditioning system 100. The cycles would be identified by a communication link between the air handler drain pipe flush supply flow controller circuit 750 and the air conditioning thermostat 180. The air handler drain pipe flush supply flow controller circuit 750 can be programmed to activate the system 600 after each cycle, after every other cycle, after any predetermined quantity of cycles, or randomly. In a second exemplary condition, the air handler drain pipe flush supply flow controller circuit 750 would activate the system 600 based upon a predetermined time span, such as once a day, once every other day, once every predetermined number of days, once a week, once every two weeks, once a month, once every other month, randomly, or any other suitable setting. In a third exemplary condition, the air handler drain pipe flush supply flow controller circuit 750 would activate the system 600 based upon a predetermined number of operating cycles of the air conditioning system 100 and based upon a predetermined time span, whichever is shorter or whichever is longer, all dependent upon the user's desired settings.

[0194] The float valve actuator assembly 700 presents a first exemplary float valve actuator assembly. An alternative float valve actuator assembly is identified by reference numeral 1200 and illustration in FIGS. 17 through 21. The illustrations presented in FIGS. 17 through 20 replicate the general control process as illustrated in FIGS. 10 through 13, incorporating like reference numerals for like components and functions. The distinction between the float valve actuator assembly 700 and the float activated check valve and switch assembly 1200 is in the design of the internal components of the assembly. The float activated check valve and switch assembly 1200 operates as a float operated check valve

[0195] The float activated check valve and switch assembly 1200 includes a float activated check valve and switch enclosure 1210, which includes a first coupler for connecting to the air handler drain pipe 162 and a float switch discharge coupler 1228 for coupling to the upstream drain connection pipe section 610. An enclosure discharge aperture 1216 is provided through a section of the float activated check valve and switch enclosure 1210, the enclosure discharge aperture 1216 being in registration with the float switch discharge coupler 1228, for passing the collected condensation from air handler 801 into the upstream drain connection pipe section 610 and remaining portions of the condensation drain pipe assembly.

[0196] A float activated check valve and switch actuator body 1220 is slideably assembled within an interior of the float activated check valve and switch enclosure 1210. The float activated check valve and switch actuator body 1220 includes a tubular sidewall extending between an actuator body switch control surface 1234 and an opposite lower end.

[0197] A actuator body inlet flow control aperture 1222 is formed through the float activated check valve and switch actuator body 1220 and located in registration with the flow portion for the air handler drain pipe 162 enabling intake of the air handler condensation source flow 800 from the air handler 110 when the float activated check valve and switch actuator body 1220 is located in an open flow position. An actuator body discharge flow aperture 1226 is formed through the lower end of the float activated check valve and switch actuator body 1220 and located in registration with the enclosure discharge aperture 1216 enabling the air handler condensation float valve bypass flow 802 (FIG. 17) and a flush valve actuating flow 845 (FIG. 19) of the air handler condensation source flow 800 from the air handler 110.

[0198] The float activated check valve and switch assembly 1200 is designed where the float activated check valve and switch actuator body 1220 slideably moves within the interior of the float activated check valve and switch enclosure 1210 between a free flow position and a stopped flow position. The float activated check valve and switch actuator body 1220 can include a feature to deter rotation about a central, vertical axis. For example, a cross sectional shape of the tubular sidewall of the float activated check valve and switch actuator body 1220 can be non-circular in shape. In another arrangement, a tongue and groove combination can be employed between an interior surface of the float activated check valve and switch enclosure 1210 and an exterior surface of the float activated check valve and switch actuator body 1220, wherein the tongue and groove retain an orientation of the float activated check valve and switch actuator body 1220 respective to the float activated check valve and switch enclosure 1210. Alternatively, the actuator body inlet flow control aperture 1222 can be designed to substantially circumscribe the sidewall of the float activated check valve and switch actuator body 1220, as illustrated in FIG. 21. For example, the actuator body inlet flow control aperture 1222 can be provided as a series of circular apertures 1222 spatially arranged about a circumferential line circumscribing the tubular sidewall of the float activated check valve and switch actuator body 1220.

[0199] A float element 1230 is internally carried by the float activated check valve and switch actuator body 1220. The float element 1230 can be fabricated of any buoyant material or arrangement, such as foam, entrapped air within an enclosed hollow body, or any other suitable buoyant material or arrangement. The float element 1230 is located within the interior of the float activated check valve and switch actuator body 1220 where the float element 1230 would raise the float activated check valve and switch actuator body 1220 in a condition where the air handler condensation drain pipe blockage 899 is formed within the condensation drain piping, such as shown in FIG. 18. In the exemplary illustration, the float element 1230 butts against a float element backing formation 1224 formed within the interior of the float activated check valve and switch actuator body 1220. A float element backing formation flow passage aperture 1225 passes through the float element backing formation 1224, enabling flow of the air handler condensation source flow 800 therethrough. It is understood that the float activated check valve and switch actuator body 1220 can include one or more float element backing formation flow passage apertures 1225 arranged to provide sufficient and uninhibited flow of the air handler condensation source flow 800. A float element flow passage aperture 1231 is formed through the float element 1230. The float element flow passage aperture 1231 is preferably of a size and shape to align with and maintain sufficient flow through the float element backing formation flow passage aperture 1225. Although the exemplary illustration presents an arrangement where the float element 1230 butts against the float element backing formation 1224 formed within the interior of the float activated check valve and switch actuator body 1220, the float element 1230 can be assembled to the float activated check valve and switch actuator body 1220 using any suitable assembly arrangement.

[0200] Function of the float activated check valve and switch assembly 1200 is presented in FIGS. 17 through 20. FIGS. 17 through 20 replicate conditions presented in FIGS. 10 through 13; replacing the float valve actuator assembly 700 with the float activated check valve and switch assembly 1200. Initially, the air handler condensation source flow 800 in combination with the air handler condensation float valve bypass flow 802 retains the float activated check valve and switch actuator body 1220 in a bypass configuration, where the float activated check valve and switch actuator body 1220 rests against a bottom surface of the float activated check valve and switch enclosure 1210. When the float activated check valve and switch actuator body 1220 is in this configuration, the actuator body inlet flow control aperture 1222 is positioned in registration with the air handler drain pipe 162, where the air handler condensation source flow 800 passes through the air handler drain pipe 162 and continues through the actuator body inlet flow control aperture 1222. The continued flow of collected condensation disallows flotation of the float element 1230, causing the float activated check valve and switch actuator body 1220 to remain in a position resting against the bottom surface of the float activated check valve and switch enclosure 1210. The collected condensation flows through the actuator body inlet flow control aperture 1222, passing through the float element backing formation flow passage aperture 1225 (where included), continuing through the float element flow passage aperture 1231, exiting the float activated check valve and switch actuator body 1220 through the actuator body discharge flow aperture 1226 and discharging from the float activated check valve and switch enclosure 1210 through the enclosure discharge aperture 1216.

[0201] This flow continues until an air handler condensation drain pipe blockage 899, as illustrated in FIG. 18, reduces or eventually stops 816 the flow of the collected condensation through the condensation discharge piping. When this condition occurs, the flow backs up, where the collected condensation fills the interior of the float activated check valve and switch enclosure 1210. The condensation collected within the interior of the float activated check valve and switch enclosure 1210 creates a buoyancy for the float element 1230, lifting the float activated check valve and switch actuator body 1220 within the float activated check valve and switch enclosure 1210, to a position as illustrated in FIG. 19. When lifted, the actuator body inlet flow control aperture 1222 is no longer overlapping the passageway of the air handler drain pipe 162; the sidewall of the float activated check valve and switch actuator body 1220 creates a closure to the passageway of the air handler drain pipe 162, restricting or stopping any flow from the float activated check valve and switch enclosure 1210 to the air handler drain pipe 162. Additionally, when the float activated check valve and switch actuator body 1220 is lifted, the actuator body switch control surface 1234 contacts the float switch actuator arm 1242 and actuates the float operated switch 1240, thus the float element carrier directly contacts the float switch actuator arm 1242 and actuates the float operated switch 1240, as illustrated in FIG. 19. In the exemplary illustrations, the backflow actuated switch 1240 is shown being mounted to a backflow actuated switch mount 1244 within the float activated check valve and switch enclosure 1210. The backflow actuated switch mount 1244 can be assembled to any suitable object which locates the backflow actuated switch actuator arm 1242 in a manner to directly or indirectly engage with the float activated check valve and switch actuator body 1220.

[0202] Upon activation of the float operated switch 1240, the air handler drain pipe flush supply flow controller circuit 750 toggles the configuration of the air handler drain pipe flush supply flow control valve 760, allowing flush supply line upstream flow 842 to flow into the condensation drain plumbing, where the flush supply line downstream flow 843 passes through the air handler drain pipe flush supply flow control valve 760. Since the flush supply line source flow 840 can only flow towards the air handler condensation drain pipe blockage 899, the flow of the flush supply line source flow 840 continues, becoming the flush post “J” trap drain flow 848. Pressure provided by the flush post “J” trap drain flow 848 dislodges the air handler condensation drain pipe blockage 899, causing the air handler condensation drain pipe blockage 899 to preferably break up and drives the air handler condensation drain pipe blockage 899 out from the condensation drain plumbing, exiting the drain pipe distal end 618, as illustrated in FIG. 20. Once the air handler condensation drain pipe blockage 899 is cleared from the condensation drain plumbing, the flush valve actuating flow 845 ceases, as the majority of the flush supply line source flow 840 flows through the condensation drain plumbing. This condition allows the float activated check valve and switch actuator body 1220 to return to a condensation pass through condition, as illustrated in FIG. 17.

[0203] The air handler drain pipe flush supply flow controller circuit 750 can include instructions for a process of pulsing the flow through the air handler drain pipe flush supply flow control valve 760 by alternating the state of the air handler drain pipe flush supply flow control valve 760. This would allow the collected fluid (both the collected condensation and the flush fluid) within the condensation drain plumbing to discharge in a condition where the air handler condensation drain pipe blockage 899 is removed from the condensation drain plumbing or at least no longer restricting flow through the condensation drain plumbing.

[0204] Alternatively, the air handler drain pipe flush supply flow controller circuit 750 can be programmed to operate in accordance with any schedule, such as those described above. When using a schedule, the air handler drain pipe flush supply flow controller circuit 750 would operate the air handler drain pipe flush supply flow control valve 760. In a condition where the condensation drain plumbing is clear, the flush fluid 850 would flow down the condensation drain plumbing. If the flush fluid 850 flows towards the air handler 110, the flow of the flush fluid 850 would create a buoyancy, raising the float activated check valve and switch actuator body 1220, and sealing flow from entering the air handler drain pipe 162. The air handler drain pipe flush supply flow controller circuit 750 would be programmed to deactivate the air handler drain pipe flush supply flow control valve 760 after a period of time or a reduction in a pressure. The fluid within the condensation drain plumbing would drain, removing the buoyancy and returning the float activated check valve and switch actuator body 1220 to a flow pass through arrangement.

[0205] The arrangement presented in FIG. 14 can be modified by replacing the float valve actuator assembly 700 with the float activated check valve and switch assembly 1200, as illustrated in FIG. 22. The functionality would be the same as described in FIG. 14 with the operation of the float activated check valve and switch assembly 1200 being as described in FIGS. 17 through 21 above.

[0206] Although the disclosure defines several optional methods of operation, it is understood that any suitable method known by those skilled in the art can be employed to contribute to the heat exchanger rinse system 500 and/or automated air handler drain pipe flush system 600. For example, a flow meter can be placed at a drain pipe distal end 618 of the downstream drain pipe section 616 to determine if an air handler condensation drain pipe blockage 899 is present within the air handler drain pipe 610, 612, 614, 616. The float valve actuator assembly 700 can be replaced by a float switch activating an electrically operated valve or a check valve.

[0207] In one exemplary enhancement, the rinse additive provided by the rinse cleaning composition delivery system 530 can be scented, where the scent would then be disseminated through the air conditioning ducting 150.

[0208] In another exemplary configuration, the heat exchanger rinse system 500, the automated air handler drain pipe flush system 600, and/or the scent dispersion system 200 can be integrated into the same air conditioning air handler 110. The rinse fluid and the flush fluid 841 can be supplied from the same source or different sources. The heat exchanger rinse system 500 and the automated air handler drain pipe flush system 600 can be programmed to operate in conjunction with one another or independent of one another.

[0209] The above-described embodiments are merely exemplary illustrations of implementations set forth for a clear understanding of the principles of the invention. Many variations, combinations, modifications or equivalents may be substituted for elements thereof without departing from the scope of the invention. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all the embodiments falling within the scope of the appended claims.

TABLE-US-00001 Element Descriptions Ref. No. Description 100 central air conditioning system 110 air conditioning air handler 112 air handler housing 114 pressure divider wall 116 low pressure section 118 high pressure section 120 air handler fan 122 heat exchanger 130 compressor assembly 132 compressor housing 134 compressor 136 compressor fan 140 refrigerant supply conduit 142 refrigerant return conduit 150 air conditioning ducting 152 trunk ducting 154 branch ducting 156 ducting transition 158 vent 160 air handler drain pipe connector 162 air handler drain pipe 168 condensation collection tray 170 air handler float switch assembly 172 float element for the air handler float switch assembly 174 float operated switch for the air handler float switch assembly 180 air conditioning thermostat 182 air conditioning thermostat microprocessor 184 air conditioning thermostat thermometer 186 air conditioning thermostat system controller 200 scent dispersion system 210 scent injection assembly 212 scent reservoir 214 releasable reservoir coupling 216 integrated scent injection body 220 inlet coupler 222 inlet orifice 224 discharge coupler 226 discharge orifice 228 scent dispersion flow valve control 230 pressure application conduit 232 pressure application orifice 234 post valve pressure application conduit 236 scent injection conduit 238 scent injection orifice 240 scent operation control valve 250 pressure airflow 252 scent injection airflow 254 scented and conditioned air mixture 260 scent generating liquid 262 scent generating vapor 264 generated scented air bubbles 270 scent dispersing reed 272 reed seating recession 280 ultrasonic system controller 282 ultrasonic scent disbursement head 284 electrical interface 286 fluid conduit 288 vaporized scent 300 aerator 310 aerating conduit 312 aerating conduit lower apex 320 backflow prevention device 322 aerator discharge port 340 scent injection assembly upper check valve 342 scent injection assembly lower check valve 400 aerator 410 aerating conduit 440 scent injection assembly upper check valve 450 aerator shaft 452 lower shaft bearing 454 upper shaft bearing 460 aerating blade assembly 462 drive blade assembly 500 heat exchanger rinse system 510 heat exchanger rinse fluid delivery conduit 512 heat exchanger rinse fluid delivery component 520 heat exchanger rinse supply flow control valve 522 heat exchanger rinse supply flow control valve actuator 530 rinse cleaning composition delivery system 532 rinse cleaning composition reservoir 534 rinse cleaning composition reservoir fill cap 536 chemical cleaning composition 540 rinse cleaning composition supply valve 542 rinse cleaning composition supply valve actuator 544 rinse cleaning composition supply valve coupling element 550 air handler heat exchanger rinse system controller circuit 552 microprocessor 554 non-volatile digital memory 556 clocking circuit 560 heat exchanger rinse fluid source 562 heat exchanger rinse application 600 automated air handler drain pipe flush system 610 upstream drain connection pipe section 612 downstream drain connection pipe section 614 J trap drain pipe section ″ 616 downstream drain pipe section 618 drain pipe distal end 700 float valve actuator assembly 710 float valve actuator enclosure 712 float body support member 713 float body support member contact surface 714 float valve ring 715 float valve ring seal 716 float valve lower control arm 717 float valve lower control arm guide aperture 718 float valve upper control arm 719 float valve upper control arm guide aperture 728 float switch discharge coupler 730 float element 732 float actuator column 734 float actuator plate 740 float actuated switch 742 float switch actuator arm 744 float switch mount 750 air handler drain pipe flush supply flow controller circuit 752 microprocessor 754 non-volatile digital memory device 756 clocking circuit 760 air handler drain pipe flush supply flow control valve 762 air handler drain pipe flush supply flow control valve operating element 764 air handler drain pipe flush supply flow control valve controller 770 upstream flush fluid supply pipe 772 downstream flush fluid supply pipe 774 flush fluid supply system connecting adapter 800 air handler condensation source flow 801 collected condensation from air handler 802 air handler condensation float valve bypass flow 804 air handler condensation pre-J trap drain flow 806 air handler condensation J trap drain flow 808 air handler condensation post J trap drain flow 809 air handler condensation drain discharge flow 810 air handler condensation drain discharge flow stoppage 812 air handler condensation float valve bypass flow stoppage 814 air handler condensation pre-J trap drain flow stoppage 816 air handler condensation J trap drain flow stoppage 820 air handler flush valve drain flow return 830 air handler flush valve drain flow return stoppage 840 flush supply line source flow 841 flush fluid 842 flush supply line upstream flow 843 flush supply line downstream flow 844 flush pre-J trap drain flow 845 flush valve actuating flow 846 flush J trap drain flow 848 flush post J trap drain flow 850 flush fluid supply line source 852 blocked flush fluid supply line source 899 air handler condensation drain pipe blockage 900 chemical composition injection system 910 chemical composition container 912 chemical composition container lid 950 flush assisting chemical composition 960 chemical composition injection flow control valve 962 chemical composition injection flow control valve operating element 964 chemical composition injection flow control valve controller 974 chemical composition injection system coupling T 1000 air handler heat exchanger rinse process 1010 cycle air conditioner step 1020 air conditioning cycle count or time criteria decision step 1030 actuate rinse valve step 1034 optional actuate chemical injection valve step 1036 rinse heat exchanger step 1040 rinse cycle complete decision step 1050 close rinse and optional chemical valve step 1100 air handler drain clog flush process 1110 run air conditioner step 1120 air handler drain line blocked decision step 1130 actuate flush valve step 1132 close float valve step 1134 optional actuate chemical injection valve step 1136 flush air handler drain line step 1140 drain blockage cleared decision step 1150 close flush and optional chemical valve step 1102 air handler drain clog flush process 1200 float activated check valve and switch assembly 1210 float activated check valve and switch enclosure 1216 enclosure discharge aperture 1220 float activated check valve and switch actuator body 1222 actuator body inlet flow control aperture 1224 float element backing formation 1225 float element backing formation flow passage aperture 1226 actuator body discharge flow aperture 1228 float switch discharge coupler 1230 float element 1231 float element flow passage aperture 1234 actuator body switch control surface 1240 float operated switch 1242 float switch actuator arm 1244 float switch mount