PLUMBING FIXTURE SIPHON FLOW ACTUATOR

Abstract

A plumbing fixture system includes a plumbing fixture bowl and a plumbing fixture tank coupled to the plumbing fixture bowl. The plumbing fixture tank is configured to house liquid. The plumbing fixture system further includes a siphon flush valve assembly disposed in the plumbing fixture tank and an electric actuator configured to induce, via the siphon flush valve assembly, a siphon flow of a portion of the liquid from the plumbing fixture tank into the plumbing fixture bowl.

Claims

1. A plumbing fixture system comprising: a plumbing fixture bowl; a plumbing fixture tank coupled to the plumbing fixture bowl, wherein the plumbing fixture tank is configured to house liquid; a siphon flush valve assembly disposed in the plumbing fixture tank; and an electric actuator configured to induce, via the siphon flush valve assembly, a siphon flow of a portion of the liquid from the plumbing fixture tank into the plumbing fixture bowl.

2. The plumbing fixture system of claim 1, wherein the electric actuator is configured to rotate a drive shaft coupled to one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

3. The plumbing fixture system of claim 2, wherein the electric actuator is a direct current electric motor that is disposed in the plumbing fixture tank.

4. The plumbing fixture system of claim 2, wherein the siphon flush valve assembly comprises a core structure and a head structure that surround a distal end of the core structure, wherein the one or more fan blades are disposed in the core structure, wherein the drive shaft extends through the head structure and the core structure.

5. The plumbing fixture system of claim 1, wherein the electric actuator comprises an electric pump configured to provide liquid flow through a spray nozzle into the siphon flush valve assembly to induce the siphon flow via the siphon flush valve assembly.

6. The plumbing fixture system of claim 1, wherein the electric actuator is configured to move a displacement object into the liquid in the plumbing fixture tank to raise liquid level in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly.

7. The plumbing fixture system of claim 1, wherein the electric actuator is configured to lower the siphon flush valve assembly in the liquid in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly.

8. The plumbing fixture system of claim 1, wherein the electric actuator is configured to move a piston in a cylinder disposed in the plumbing fixture tank to raise liquid level of the liquid in the plumbing fixture tank to cause the siphon flow via the siphon flush valve assembly.

9. The plumbing fixture system of claim 1, wherein the electric actuator is configured to cause airflow through the siphon flush valve assembly to cause the siphon flow via the siphon flush valve assembly.

10. A siphon flush valve assembly comprising: a core structure comprising a first distal end and a second distal end, wherein the first distal end forms a weir, and wherein the second distal end forms a siphon flush valve outlet; a head structure surrounding the first distal end of the core structure, wherein a lower portion of the head structure forms a siphon flush valve inlet; and one or more fan blades configured to induce a siphon flow of surrounding liquid through the siphon flush valve inlet, over the weir, and out the siphon flush valve outlet.

11. The siphon flush valve assembly of claim 10 further comprising an electric actuator configured to rotate a drive shaft coupled to the one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

12. The siphon flush valve assembly of claim 11, wherein the electric actuator is a direct current electric motor configured to be disposed in a plumbing fixture tank with the siphon flush valve assembly.

13. The siphon flush valve assembly of claim 10 further comprising a pneumatic actuator configured to rotate a drive shaft coupled to the one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

14. The siphon flush valve assembly of claim 10 further comprising a hydraulic actuator configured to rotate a drive shaft coupled to the one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

15. A control system comprising: a user interface configured to receive user input associated with flushing a plumbing fixture; and a controller configured to: receive the user input; and responsive to the user input, actuate an electric actuator to induce a siphon flow of liquid via a siphon flush valve assembly from a plumbing fixture tank of the plumbing fixture to a plumbing fixture bowl of the plumbing fixture.

16. The control system of claim 15, wherein the electric actuator is configured to rotate a drive shaft coupled to one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

17. The control system of claim 16, wherein the electric actuator is a direct current electric motor that is disposed in the plumbing fixture tank.

18. The control system of claim 16, wherein the siphon flush valve assembly comprises a core structure and a head structure that surround a distal end of the core structure, wherein the one or more fan blades are disposed in the core structure, wherein the drive shaft extends through the head structure and the core structure.

19. The control system of claim 15, wherein the electric actuator comprises an electric pump configured to provide liquid flow through a spray nozzle into the siphon flush valve assembly to induce the siphon flow via the siphon flush valve assembly.

20. The control system of claim 15, wherein the electric actuator is configured to one or more of: move a displacement object into the liquid in the plumbing fixture tank raise liquid level in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly; lower the siphon flush valve assembly in the liquid in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly; move a piston in a cylinder disposed in the plumbing fixture tank to raise the liquid level of the liquid in the plumbing fixture tank to cause the siphon flow via the siphon flush valve assembly; or cause airflow through the siphon flush valve assembly to cause the siphon flow via the siphon flush valve assembly.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0004] The present disclosure is illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that different references to an or one embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.

[0005] FIGS. 1A-B illustrate systems including siphon flush valve assemblies, according to certain embodiments.

[0006] FIGS. 2A-E illustrate siphon flush valve assemblies of plumbing fixture systems, according to certain embodiments.

[0007] FIGS. 3A-F illustrate components of plumbing fixture systems, according to certain embodiments.

[0008] FIG. 4 illustrates a flow diagram of a method associated with using an actuator to cause siphon flow in a plumbing fixture, according to certain embodiments.

[0009] FIG. 5 is a block diagram illustrating a computer system, according to certain embodiments.

DETAILED DESCRIPTION OF EMBODIMENTS

[0010] Embodiments described herein are related to siphon flow actuators for plumbing fixtures (e.g., using an electronic actuator to cause siphon flow in a siphon flush valve assembly).

[0011] Plumbing fixtures are connected to plumbing systems (e.g., water piping, sewer piping, etc.) to deliver and drain fluids (e.g., deliver potable water and drain waste water). Plumbing fixtures include bathtubs, bidets, channel drains, drinking fountains, hose bibs, sinks (e.g., mop sinks, janitor sinks, kitchen sinks, bathroom sinks, etc.), showers, urinals, toilets (e.g., water closets), etc.

[0012] Some plumbing fixtures include a fill valve to provide water to the plumbing fixture and/or a flush valve to drain fluids from the plumbing fixture. For example, a fill valve fills a tank of a plumbing fixture with water and a flush valve separates the liquid in the tank from a bowl of the plumbing fixture. Upon actuation of the flush valve, the liquid from the tank enters the bowl to cause a flushing operation.

[0013] Excessive consumption of potable water remains a dilemma for water agencies, commercial building owners, homeowners, residents, architects, engineers, and plumbing fixture manufacturers. Increased usage and waste has negatively affected the amount and quality of suitable water. In response to this global dilemma, many local and federal authorities and voluntary programs have enacted regulations that reduce the water demand required plumbing fixtures. In the United States, for instance, government agencies that regulate water usage have gradually reduced the threshold for fresh water use in toilets, from 7 gallons/flush (prior to the 1950s) to 5.5 gallons/flush (by the end of the 1960s) to 3.5 gallons/flush (in the 1980s). The National Energy Policy Act of 1995 now mandates that toilets sold in the United States can only use 1.6 gallons/flush (6 liters/flush). High-efficiency toilets that use 1.28 gallons per flush (gpf) or less can be certified under the U.S. Environmental Protection Agency (USEPA) WaterSense program. Other types of plumbing fixtures, such as urinals, have corresponding water usage regulations.

[0014] Different plumbing fixtures have different performance. For example, a flush-toilet may be rated by a Maximum Performance (MaP) score. The low end of MaP scores is 250 (250 grams of simulated fecal matter) and a high end of MaP scores is 1000. The higher the MaP score, the higher the probability that the toilet removes all waste with a single flush, does not plug, does not harbor odor, and is easy to keep clean.

[0015] Conventionally, plumbing fixtures may either have a higher water usage and higher performance or lower water usage and lower performance. For example, some conventional toilets that have a low gpf have a low MaP score. Use of conventional plumbing fixtures that have low gpf and/or have low MaP scores can lead to multiple flushes per use (e.g., water inefficiency), increased maintenance and replacement of plumbing fixtures, decreased sanitation, etc.

[0016] Some conventional flush valves of plumbing fixtures use a flapper to separate the fluid in the tank from the bowl. Conventionally, the flapper is mechanically connected (e.g., via a chain) to a lever. Actuation of the lever causes the flapper to be mechanically opened (e.g., lifted by the chain). Conventionally, a flapper has a flapper seal below the water line that may be prone to leaking due to wear and exposure to chemicals. Conventionally, flappers may be a leading cause of leaking or running of toilets (e.g., liquid from the tank constantly runs into the bowl). This causes plumbing fixtures to use more water and to have lower performance.

[0017] The devices, systems, and methods of the present disclosure provide plumbing fixtures with actuators to provide a siphon flow.

[0018] A plumbing fixture system (e.g., toilet, urinal, etc.) includes a plumbing fixture bowl and a plumbing fixture tank coupled to the plumbing fixture bowl. The plumbing fixture tank is configured to house liquid (e.g., water, cleaning solution, etc.).

[0019] The plumbing fixture system further includes a siphon flush valve assembly disposed in the plumbing fixture tank. The siphon flush valve assembly includes a core structure and a head structure. The core structure includes first and second distal ends. The first distal end forms a weir and the second distal end forms a siphon flush valve outlet. The head structure surrounds the first distal end of the core structure. A lower portion of the head structure forms the siphon flush valve inlet.

[0020] The plumbing fixture system further includes an electric actuator. In some embodiments, the electric actuator is disposed in the plumbing fixture tank. The electric actuator is configured to induce, via the siphon flush valve assembly, a siphon flow of a portion of the liquid from the plumbing fixture tank into the plumbing fixture bowl. The electric actuator may induce the siphon flow to provide a flushing operation without using a flapper.

[0021] In some embodiments, the electric actuator is coupled to one or more fan blades disposed in the siphon flush valve assembly. The electric actuator may cause the fan blades to rotate to cause a negative pressure to cause the liquid in the siphon flush valve inlet to rise to start the siphon flow. In some embodiments, the electric actuator includes a motor (e.g., direct current (DC) motor) that is coupled to a drive shaft that is coupled to the fan blades. The motor may rotate the drive shaft which rotates the fan blades to cause the negative pressure (e.g., pressure differential) within the siphon flush valve assembly which raises the liquid level to be above the weir to start the siphon flow.

[0022] In some embodiments, the electric actuator includes an electric pump configured to provide liquid flow through a spray nozzle into the siphon flush valve assembly to induce the siphon flow via the siphon flush valve assembly. The liquid flow through the spray nozzle may cause a negative pressure (e.g., pressure differential) within the siphon flush valve assembly which raises the liquid level to be above the weir to start the siphon flow.

[0023] In some embodiments, the electric actuator is configured to move a displacement object into the liquid in the plumbing fixture tank to raise liquid level in the plumbing fixture tank (e.g., to be above the weir) to induce the siphon flow via the siphon flush valve assembly.

[0024] In some embodiments, the plumbing fixture system of claim 1, wherein the electric actuator is configured to lower the siphon flush valve assembly in the liquid in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly. This raises the liquid level in the siphon flush valve assembly to be above the weir to induce the siphon flow.

[0025] In some embodiments, the electric actuator is configured to move a piston in a cylinder disposed in the plumbing fixture tank to raise liquid level of the liquid in the plumbing fixture tank (e.g., to be above the weir) to cause the siphon flow via the siphon flush valve assembly.

[0026] In some embodiments, the electric actuator is configured to cause airflow through the siphon flush valve assembly to cause the siphon flow via the siphon flush valve assembly. The airflow through the siphon flush valve assembly causes a negative pressure (e.g., pressure differential) within the siphon flush valve assembly which raises the liquid level to be above the weir to start the siphon flow.

[0027] The systems, devices, and methods of the present disclosure have advantages over conventional solutions. In some embodiments, the electric actuator and siphon flush valve assembly of the present disclosure are used to provide a flapperless plumbing fixture which avoids malfunctioning, such as leaking and running, of conventional flapper plumbing fixtures. In some embodiments, electric actuator and siphon flush valve assembly of the present disclosure are used to evacuate a plumbing fixture with less flushes (e.g., one flush) per use (e.g., water efficiency), decreased maintenance and decreased replacement of plumbing fixtures, increased sanitation, etc. compared to conventional solutions.

[0028] Although certain embodiments of the present disclosure describe use of an electric actuator and siphon flush valve assembly, in some embodiments, a different type of actuator (e.g., hydraulic actuator, pneumatic actuator, etc.) may be used with a siphon flush valve assembly or an actuator may be used with a different type of flush valve assembly.

[0029] Although certain embodiments of the present disclosure describe plumbing fixture systems that use the electric actuator to induce a siphon flow, in some embodiments, plumbing fixture systems of the present disclosure may use electric actuators to perform other purposes (e.g., perform a flushing operation, provide liquid to the rim, etc.).

[0030] FIGS. 1A-B illustrate components of systems 100 (e.g., plumbing fixture systems, tank assemblies), according to certain embodiments.

[0031] System 100 includes a tank 143 (e.g., plumbing fixture tank) and a tank lid 150. Tank 143 forms a tank outlet 113. System 100 may include a fill valve assembly 107, a siphon flush valve assembly 101 (e.g., siphon flush valve), an actuator 105 (e.g., electric actuator), a user interface 162, and a conduit 106, a controller 164.

[0032] Actuator 105 may be a motor (e.g., electric motor, DC motor), pump (e.g., electric pump), linear actuator (e.g., configured to lower an object into the liquid in the tank 143), a telescoping actuator (e.g., configured to lower an upper portion of the siphon flush valve assembly 101 into the liquid in the tank 143), etc. In some embodiments, the actuator 105 is configured to initiate a siphon flow in the siphon flush valve assembly 101. In some embodiments, the actuator 105 is inside the tank 143. In some embodiments, the actuator 105 is outside of the tank 143.

[0033] Fill valve assembly 107 may be disposed in the tank 143. The fill valve assembly 107 may include fill valve inlet 142, one or more components 112, fill valve outlet 114, and/or float component 116. In some embodiments, liquid is supplied to the fill valve assembly 107 via inlet 142.

[0034] As shown in FIG. 1A, responsive to the float component 116 being in (e.g., floating to) a first position (e.g., upper position responsive to water level W in tank 143 meeting a threshold level), the fill valve assembly 107 does not provide liquid flow to the fill valve outlet 114. As shown in FIG. 1B, responsive to the float component 116 being in (e.g., floating to) a second position (e.g., lower position responsive to water level W in tank 143 being below a threshold level), the fill valve assembly 107 provides liquid flow to the fill valve outlet 114 (e.g., and to plumbing fixture bowl of the system 100). The liquid flow enters the inlet 142, passes through components 112, and exits via fill valve outlet 114. In some embodiments, the liquid flow travels up the fill valve assembly 107 towards float component 116 and travels back down the fill valve assembly 107 to the fill valve outlet 114. In some embodiments, the components 112 include one or more of baffle system, vacuum breaker, restrictor, etc.

[0035] Tank 143 includes liquid 122 and a water level W. System 100 may be positioned on deck of plumbing fixture (e.g., of a plumbing fixture bowl).

[0036] In some embodiments, system 100 is fully electronic, with the actuator 105 and the siphon flush valve assembly 101 being operated electronically via controller 164. In some embodiments, system 100 is operated manually (e.g., is fully manual). A manual valve may be located at actuator 105. Actuation of user interface 162 of a lever may open a manual valve (e.g., at the location of actuator 105). In some embodiments, system 100 may include a manual offset timer that causes siphon flush valve assembly 101 or manual valve to be actuated a predetermined amount of time after the other responsive to the lever of user interface 162 being actuated.

[0037] A control system may include one or more of actuator 105, user interface 162 (e.g., one or more sensors, button, etc.), controller 164, power source (e.g., battery), etc. In some embodiments, control system includes a metering valve. At least a portion of control system may be disposed in tank 143 and/or coupled to tank 143. Controller 164 is in electrical communication with a power source (e.g., battery, etc.), with a user interface 162 (e.g., user input, user input device), and with an actuator 105. Electrical communication between power controller 164, user interface 162, and/or actuator 105 may be wired or wireless.

[0038] Controller 164 may cause actuation of actuator 105 to initiate a siphon flush via siphon flush valve assembly 101 into the plumbing fixture bowl (e.g., by raising the water level W, by causing a negative pressure in the siphon flush valve assembly 101, etc.). As the water level W lowers by the liquid 122 flowing into bowl, fill valve assembly 107 starts providing liquid flow (e.g., into tank 143 and/or bowl). In some embodiments, an actuation of actuator 105 and actuation of fill valve assembly 107 may be simultaneous or one may open before or after the other.

[0039] Water level W of FIG. 1A represents a toilet water tank level prior to initiation of a flush cycle (between flush cycles), according to an embodiment. The system 100 may be capable of providing a high energy flush with reduced flush water volumes (e.g., low volume and/or high-efficiency toilet having a higher energy flush and a more powerful siphon).

[0040] System 100 may use three systems that work together to perform the flushing action: a bowl siphon; a flush mechanism; and a refill mechanism. Working in concert, the three systems allow for and complete a flush cycle of the plumbing fixture. The tank 143 (e.g., positioned over the back of bowl) contains liquid 122 that is used to initiate siphoning from the bowl to sewer piping (e.g., a sewage line), after which liquid 122 (e.g., fresh water) refills the bowl. User interface 162 may receive user input (e.g., manipulation of a flush lever on the outside of the tank 143 that is connected to controller 164, actuating a button on the tank lid 150 or proximate tank 143, actuating a sensor proximate tank 143). Sensor may include one or more of an infrared (IR) sensor, capacitive sensor, or other motion or presence sensor. User input may be touchless with a sensor configured to recognize a user gesture. Upon receiving user input, the actuator 105 may be actuated to cause a siphon flow of a portion of liquid 122 from the tank 143 to the bowl to initiate a flush cycle (e.g., toilet flush cycle).

[0041] The liquid 122 may flow directly into the bowl and disperse into a bowl rim. The liquid 122 may release into the bowl rim quickly, with flow from the tank 143 into the bowl lasting about 2 to about 4 seconds. The liquid 122 may flow from the rim, down a channel within the sides of the bowl and into a large hole at the bottom of the plumbing fixture (e.g., siphon jet) which releases liquid into an adjoining siphon tube to initiate a siphon action. The siphon action of the bowl draws liquid 122 and waste out of the bowl and into the siphon tube. Waste and liquid 122 continues through the siphon tube and through the trapway and is released into the sewer piping (e.g., wastewater line). Once water level W of liquid 122 in tank 143 is below a threshold level, liquid 122 stops flowing through siphon flush valve assembly 101 (e.g., siphon flush valve assembly 101 closes the tank outlet 113) and a floating mechanism (e.g., coupled to fill valve assembly 107) that is has now dropped in the tank 143 initiates opening of a fill valve assembly 107. The fill valve assembly 107 provides liquid 122 (e.g., fresh water) to both the tank 143 and the bowl through separate flows. The tank 143 fills with water to a high enough level to cause the float to rise, thus shutting off the fill valve assembly 107. At this point, the cycle is complete.

[0042] A flush cycle is completed upon re-filling the tank 143 and one or more traps (e.g., sump trap and/or lower trap) coupled to the bowl.

[0043] In some embodiments, a system 100 (e.g., tank assembly) may be configured for an operator to choose (e.g., via user interface 162) for instance a full flush of about 1.6 gallons (about 6 liters) of water to eliminate solid waste or a partial flush (short flush) of a lower volume or water, for example about 1.1 gallons (about 4 liters), for the removal of liquid waste. In some embodiments, a system 100 (e.g., tank assembly) may be configured for an operator to choose (e.g., via user interface 162) for instance a full flush of about 0.8 gallons of water to eliminate solid waste or a partial flush (short flush) of a lower volume or water, for the removal of liquid waste. A choice of flush volume may depend on a valve open time of siphon flush valve assembly 101.

[0044] In some embodiments, a siphon flush valve assembly 101 may be coupled to an overflow tube. In some embodiments, an overflow tube may be coupled to a tapered section of siphon flush valve assembly 101. An overflow tube may be in flow communication with the valve body of the siphon flush valve assembly 101. In some embodiments, a fill valve assembly 107 may be configured to provide fresh flush water to a bowl via an overflow tube after a flush has been performed. In other embodiments, a siphon flush valve assembly 101 comprises no overflow tube. In some embodiments, bowl refill is accomplished via directing a certain amount of refill water through a jet outlet into the sump area towards the end of a flush cycle. In some embodiments, a fill valve assembly 107 may not be present. A bowl water seal may be formed via timing and water flow from the tank after the siphon has been broken. In some embodiments, there is no jet outlet to aid in siphon formation (e.g., just a small hole in the jet outlet location from which water flows from tank to provide bowl water seal).

[0045] Suitable flush valve assemblies are shown in U.S. Pat. No. 8,079,095, according to some embodiments. The relevant portions of U.S. Pat. No. 8,079,095 are incorporated by reference.

[0046] In some embodiments, the siphon flush valve assemblies 101 of FIGS. 1A-B include one or more of the features and/or functionalities of the siphon flush valve assemblies 101 of FIGS. 2A-E. In some embodiments, siphon flush valve assembly 101 includes a core structure 102 (e.g., tubular core) and a head structure 103. In some embodiments, siphon flush valve assembly 101 is configured to be automatically electrically initiated via a sensor (e.g., presence sensor). Responsive to receiving sensor data from sensor, controller 164 detects presence and subsequent absence of a user and causes actuation of actuator 105 to initiate a siphon. Upon initiation of a siphon, flush water will exit core structure of siphon flush valve assembly 101 through tank outlet 113 to a bowl of the plumbing fixture. The sensor is in electronic communication with one or more batteries in battery housing and electrical wires.

[0047] FIGS. 2A-E illustrate siphon flush valve assemblies 101 of systems 100 (e.g., plumbing fixture systems), according to certain embodiments. FIG. 2A illustrates a cross-sectional front view of a siphon flush valve assembly 101. FIG. 2B illustrates a front view of a siphon flush valve assembly 101.

[0048] Referring to FIG. 2A, siphon flush valve assembly 101 has a core structure 201 (e.g., tubular core) and a head structure 202. A surrounding fluid of a tank 143 (e.g., toilet tank) may have a water level W between weir 205 and flush valve inlet 206. An actuator 105 (e.g., see FIGS. 1A-B) may initiate a siphon (e.g., siphon flow) by causing a pressure differential between atmospheric air above the surrounding fluid of tank 143 and the air inside of core structure 201, by raising water level of the surrounding fluid of tank 143, by raising the water level within the siphon flush valve assembly 101, and/or the like. Upon initiation of a siphon, surrounding fluid will enter inlet 206, pass over weir 205, through core structure 201 and to a bowl via siphon flush valve outlet 207 to initiate a flush. As a surrounding fluid level drops, the siphon will break when air enters siphon flush valve inlet 206 and a flush will stop. In some embodiments, core structure 201 includes a first substantially tubular section 208, a tapered section 209, and a second substantially tubular section 210. An upper portion of the first substantially tubular section 208 curves outward at the weir 205 and extends longitudinally downward from the weir 205. In this manner, head structure 202 and an upper portion of core structure 201 may be substantially concentric. Head structure 202 may include a concave section 211 surrounding spray initiator 203 and fluid supply line 212. A core structure 201 may include a flange 213 extending outwardly from an outer surface of a tubular core and align a siphon flush valve with a tank opening (e.g., tank outlet 113) and maintain a siphon flush valve therein.

[0049] In some embodiments, splines 214 are disposed in head structure 202. Head structure 202 may be a dome or cap shape. An opening in head structure 202 may be fitted with a spray fitting that couples to spray initiator 203. Head structure 202 may include splines 214 that extend from an inner surface of head structure 202. In some embodiments, head structure 202 has four splines 214, less than four splines 214, or more than four splines 214. Splines 214 may locate and hold head structure 202 in place on an upper portion of the core structure 201 (e.g., tubular core). In some embodiments, splines 214 are configured to rest on upper portion of core structure 201. In some embodiments, splines 214 are configured to provide a friction fit with an upper portion of core structure 201. In some embodiments, splines 214 are configured to be secured with one or more connection types (e.g., adhesion, fastener, etc.).

[0050] Splines 214 may be generally L-shaped. Splines 214 may extend from a top inner surface and inner wall surface. Splines 214 may be coupled to a top inner surface and inner wall surface of head structure 202. Splines 214 may be molded or formed with head structure 202. In some embodiments, splines 214 are formed separately and coupled to head structure 202, for example, by gluing or fastening. Splines 214 may be full length, extending along the entire length of head structure 202 or splines 214 may be partial length, extending along a portion of the length of head structure 202. Splines 214 may centrally located head structure 202 on a core structure 201. Splines 214 may extend to top of head structure 202 and may aid in determining a vertical position. Splines 214 may create a radially and vertically extending space (a flow path) between upper portion of a core structure 201 and an inner surface of head structure 202. A radially and vertically extending space may be an annular space. An annular space between upper portion of a core structure 201 and an inner surface of head structure 202 may be configured for water to flow into a siphon flush valve assembly 101, through a flush valve inlet 206, over a weir 205, and into a bore of a core structure 201. A configuration of splines 214 may vary depending upon the desire annular space and flow path.

[0051] Referring to FIG. 2B, siphon flush valve assembly 101 may be a non-concentric siphon flush valve. Core structure 201 may be the same or similar as any cores previously described. Core structure 201 may have a varied diameter bore. Core structure 201 may have a diverging bore. In siphon flush valve assembly 101, head structure 202 may take a form of two inlet pipes 222 arranged symmetrically about core structure 201. Each inlet pipe 222 may have a flush valve inlet 206 (e.g., flared inlet). Flush valve inlets 206 (e.g., flared inlets) may allow increased and improved flow into siphon flush valve assembly 101. Each inlet pipe 222 may include a weir 205. Siphon flush valve assembly 101 may operate in the same or similar manner as the previously described flush valve assemblies 101 (e.g., siphon valves). Fluid flow enters siphon flush valve assembly 101 through flush valve inlet 206. Surrounding tank fluid may flow from flush valve inlet 206, over weirs 205, through bore of core structure 201, and out a siphon flush valve outlet 207. Tank fluid may flow through flush valve inlets 206 simultaneously or substantially simultaneously. Tank fluid may flow uniformly through both inlet pipes 222. In other embodiments, a head may comprise a plurality of inlets or inlet pipes, for example, 2, 3, 4, 5, 6, 7, 8, or more inlet pipes 222.

[0052] System 100 may be a plumbing fixture, such as a toilet. A toilet may be a gravity-fed toilet, a tankless toilet, a wall hung toilet, a one-piece toilet, a two-piece toilet, a pressurized toilet, a commercial toilet, a residential toilet, a hands free toilet, a sensor actuated toilet, a manual toilet, etc. An actuator 105 may be manual, electrical, hydraulic, pneumatic, mechanical, or hydro-mechanical. An actuator 105 may be associated with a battery. A supply valve may be associated with an infrared sensor (IR sensor), logic circuit and/or printed circuit board (PCB). During operation, an IR sensor may be activated by a user (e.g. the IR sensor senses when the user moves from a sensor path). An IR sensor may communicate this to a controller which sends a signal to the solenoid to open thus admitting water through a siphon flush valve fluid supply line. A solenoid may be programmed to open for a predetermined time or to be opened and closed, respectively, based on signals from a controller.

[0053] Core structure 201 (e.g., tubular core) may have a choke point at a transition from a first substantially tubular section 208 to a tapered section 209. A choke point may be configured to improve flow dynamics and efficiencies. A choke point may improve flow dynamics and efficiencies, for example, due to a divergence of a tubular core bore of the core structure 201. A divergence of a core bore may be caused by the diameter of bore tapering inwardly and subsequently tapering outwardly. A divergence of a bore may be where a bore extends (or alternatively tapers inwardly) from a first diameter at a top of first substantially tubular section 208 to a choke point and subsequently tapers outwardly during a tapered section 209 to an inner diameter of a second substantially tubular section 210. A divergence of a bore may increase the velocity or speed of a fluid flowing through a siphon flush valve as compared to a straight bore. An increased velocity of a fluid flow may increase the rate of discharge of fluid from a toilet tank to a toilet bowl, thus enhancing efficiency and performance of a toilet. A core structure 201 may be substantially tubular. A first substantially tubular section 208, a tapered section 209, and a second substantially tubular section 210 may be coupled or integrally formed.

[0054] A tapered section 209 may taper outwardly from a first diameter D1 of a first substantially tubular section 208 to a second diameter D2 of a second substantially tubular section 210. A second diameter D2 may be larger than first diameter D1. A tapered section 209 may taper both internally (e.g. the bore of a tapered section 209 may taper outward) and externally (e.g. the outer surface of a tapered section 209 may taper outward). A core structure 201 may include a flange 213 extending outwardly from an outer surface of core structure 201 (e.g., tubular core). Flange 213 may be located at a lower end of a tapered section 209 and/or at an upper end of a second substantially tubular section 210. Flange 213 may align a siphon flush valve assembly 101 with a tank outlet 113 (e.g., tank opening) and maintain a siphon flush valve therein. Enhanced flow, as previously described, may be achieved from a first substantially tubular section 208 and a tapered section 209 due to the expanding bore diameter. An enhanced flow may be divergent flow where under full flow conditions, flow transitions from a choke point gradually diverging outward. This may create flow separation thus increasing a flow velocity through a choke point. A change in diameter may benefit or aid in establishing siphon flow during an initial or transient phase (e.g. during initiation of a siphon flow in a siphon flush valve). Various configurations may be contemplated in accordance with the invention to increase flow velocity and volume. This may also reduce the amount of time and/or flow needed to establish a siphon flow.

[0055] A flush valve inlet 206 (e.g., siphon flush valve inlet) and a fluid flow path may be substantially annular. A flow path may be defined between an inner surface of a head structure 202 and an outer surface of a core structure 201 (e.g., tubular core). A flow path may be defined from a structure of a head structure 202 and a core structure 201, embodiments of which are described herein. A siphon flush valve assembly 101 may have an internal cavity defined by a tubular bore and a flow path. A siphon flush valve assembly 101 may have a longitudinal axis L. A head structure 202, spray initiator 203, and/or core structure 201 may be aligned along the longitudinal axis L. A head structure 202 and core structure 201 may be concentric about the longitudinal axis L. Where head structure 202 and core structure 201 are not circular in cross-section, head structure 202 and core structure 201 may still be aligned with center points along the longitudinal axis. A head structure 202 may be wider and/or have a larger diameter than a core structure 201 (e.g., tubular core) such that flush valve inlet 206 (e.g., siphon flush valve inlet) and/or a flow path is defined therebetween. An area defined by a space between a flush valve inlet 206 (e.g., siphon flush valve inlet) and an upper portion of a core structure 201 may be greater than or equal to the area defined by a space between a head apex of the head structure 202 and a weir 205. A space between a head apex and a weir 205 may be greater than or equal to the area defined by a top of bore. A spray initiator 203 may be located such that a spray pattern emitted from initiator contacts the bore at or lower than a weir 205.

[0056] A starting surrounding water level W may be at a higher vertical position than a flush valve inlet 206 (e.g., siphon flush valve inlet). A starting water level W may be higher than a flush valve inlet 206 to ensure no air exists at a flush valve inlet 206 (e.g. a water seal is present) and to ensure a siphon may be initiated when a flush cycle is started. A starting water level W may be at or near the top of a weir 205. A water level lower than the top of a weir 205 may require a greater pressure differential to initiate siphon flow. A water level higher than the top of a weir may provide for water to spill over and provide a run on condition. Surrounding water in a toilet tank which at a starting water level W may be water at atmospheric pressure.

[0057] In some embodiments, actuator 105 causes a pressure differential by rotating one or more fan blades (e.g., disposed in core structure 201) to cause siphon flow in siphon flush valve assembly 101.

[0058] In some embodiments, actuator 105 causes a pressure differential via fluid flow. For example, the actuator may pump fluid (e.g., water, air) into the core structure 201. In an initial condition, fluid (e.g., water, air) may be supplied through a fluid supply line (e.g., siphon flush valve fluid supply line) into the core structure 201. Fluid may be pressurized water or air and may be admitted through actuator 105 (e.g., pump). Fluid may exit a fluid supply line (e.g., siphon flush valve fluid supply line) and discharge into a bore through a spray initiator. Fluid may exit initiator in a cone pattern. Cone pattern may be substantially cone-shaped, such as, a full cone, a hollow cone, or a square cone shape. A tapered portion of a bore of an initiator may be configured for fluid to exit a spray initiator in cone pattern. That is, since a tapered portion of a bore has a conical shape, fluid which exits this portion may also take on a conical shape. Discharge of fluid in a cone pattern into a tubular bore may create a negative pressure differential. A pressure differential may be such that the pressure within a siphon flush valve assembly 101 is lower than the pressure in a tank 143 (e.g., toilet tank). A starting surrounding water level W in a tank 143 may have an initial condition at atmospheric pressure. Fluid that flows out of a spray initiator 203 may be at a higher pressure than the atmospheric pressure of starting surrounding water level. This may create a reduced pressure at a weir 205 and flush valve inlet 206. A reduced pressure within siphon flush valve assembly 101 induces a siphon effect, pulling water from starting surrounding water into a flush valve inlet 206, through a flow path, over a weir 205, into a tubular bore and out a flush valve outlet 207.

[0059] Once a siphon effect has been initiated, actuator 105 may stop (e.g., stop providing pressurized fluid from fluid supply line, stope rotating fan blades, etc.). Pressurized fluid may be stopped by closing a valve (e.g., solenoid valve). So long as no air is provided to an interior of a siphon flush valve assembly 101 (e.g., siphon flush valve), water may continue to empty from a tank 143 to a toilet bowl for flushing of a plumbing fixture (e.g., toilet). As water approaches an ending water level, the water level may no longer completely cover a flush valve inlet 206. Accordingly, air may be permitted to enter flush valve inlet 206 and become entrained with flow of water through the siphon flush valve assembly 101. With air entering the flush valve inlet 206, the siphon effect through siphon flush valve assembly 101 is stopped and a flush is stopped.

[0060] A height of starting surrounding water level and a height of ending surrounding water level may be selected such that the volume therebetween effectively flushes a plumbing fixture (e.g., toilet). A height between starting surrounding water level and ending surrounding water level may be optimized for a predetermined discharge volume. A fill valve assembly 107 may be controlled to refill a tank 143 (e.g., toilet tank) to the starting water level. A flush valve inlet 206 may be placed at a height corresponding to a desired ending water level. A system 100 thus may be configured for a fixed flush volume discharge.

[0061] Various parameters may be customized or altered in the operation of a toilet and/or siphon flush valve assembly 101 (e.g., siphon flush valve). Such parameters include dimensions and parameters (e.g. diameters, lengths, shape, orientation, etc.) of a siphon flush valve assembly 101, height of the weir 205, fluid pressure from the main plumbing source, fluid pressure in a fluid supply line 212, dimensions and parameters (e.g. diameters, lengths, shape, orientation, etc.) of the spray initiator 203, size and orientation of a siphon flush valve inlet 206, duration of the initiator discharging fluid, activation time of an actuator 105, etc. In an exemplary embodiment, a siphon flush valve assembly 101 with the previously described parameters, may have the following parameters to achieve a siphon flush effect to discharge fluid from a tank 143 to a toilet bowl. An actuator 105 may be actuated for about 2.5 seconds (e.g., at about 40 psi and above for a spray initiator) to initiate siphon flow. Refilling or resealing of a toilet bowl may be achieved by increasing a duration (ON time) to dispense additional water for this purpose. Refilling or resealing may be an amount of water needed to refill a toilet bowl to a level to provide a water seal to prevent sewer gasses from traveling through a trapway and up through a bowl. A divergent flow pattern may be used to form a seal between a nozzle and a valve core inside diameter perimeter. Another seal may be created by a starting water level which is at or near a weir height of weir 205. As fluid is flowing through a sprayer (e.g., spray initiator) contacting a core inner perimeter wall and flowing downward, it creates a negative pressure or vacuum to cause atmospheric pressure acting on a free surface to push cistern water up and over the weir 205 and thusly establishing gravity siphon flow. Other flow patterns are contemplated. For example, if, a straight flow column were large enough to contact a core inner perimeter wall, it may generate siphon flow.

[0062] A head structure 202 may have an outer surface having a substantially cylindrical or tubular shape. An outer surface may curve radially outward at a lower end. A lower end may create a concave surface in an outer surface. A lower end may be radiused or profiled to improve flow dynamics and efficiencies. A radiused or profiled lower end may improve flow dynamics by reducing energy losses. An outer surface may extend longitudinally upward from a lower end to an upper end. At an upper end, an outer surface may curve at a curved portion upward from an outer end to an apex and then downward toward a head opening. A head opening may have a substantially cylindrical shape. In a lateral view, a head may appear donut shaped.

[0063] A siphon flush valve assembly 101 may taper outwardly at the top. A full round feature may form an effective siphon with sprayer technology alone. An outward taper profile, under dynamic flow conditions, at an initial or transient flow stage (air and water) may follow the profile shape, first spilling over at the weir 205, secondly following the taper downward and thirdly, following vertically downward. As flow, for example, the flow velocity, increases, the flow will separate from the boundary wall at the taper to the vertically downward transition resulting in convergent flow stream toward a center of the valve. As the valve is of substantially circular design in cross-section, the resulting annular flow will meet in the bore of a siphon flush valve assembly 101 and effectuate a seal to allow a pressure differential to form as water flows downward through a bore of a siphon flush valve assembly 101 (e.g., through the down leg portion), thus aiding a siphon effect to develop in the siphon flush valve assembly 101 (e.g., siphon flush valve). A previously described action, combined with a previously mentioned spray initiator 203, may be configured for a siphon to form and transition to full siphon (no air) more quickly than a full round weir feature. Other profile shapes may be provided for improving efficiencies.

[0064] An upper portion of a core structure 201 (e.g., tubular core) may have an outwardly and downwardly extending shape. An upper portion may include a wall which extends and/or curves from weir 205 outward and downward to a lower surface. A lower surface may be curved or turned inward toward the core from the wall. A weir may be a profiled or radiused throat to provide a flow path with improved flow dynamics and efficiencies. An upper portion may form a gap between an exterior surface of a core and a wall of an upper portion. A gap may be substantially annular. A weir 205 may align with a center of a curved portion of a head structure 202. In this manner, when assembled, a head structure 202 and an upper portion of a core structure 201 may be substantially concentric. A relationship between a head structure 202 and an upper portion of core structure 201 may provide a flush valve inlet 206 and a flow path for fluid, such as water, to flow from an exterior of a siphon flush valve assembly 101 through a tubular bore. A flush valve inlet 206 and flow path may be annular. An outward curve of a lower surface of a core structure 201 and an outward curve of a lower end of a head structure 202 may provide an enlarged flush valve inlet 206. This may improve flow dynamics and efficiencies.

[0065] In some embodiments, a head structure 202 and core structure 201 (e.g., tubular core) may have shapes other than cylindrical, for instance ovular. A width of a head structure 202 and a core structure 201 may be smaller than a length of the head structure 202 and the core structure 201. An oval or elliptical shape of a siphon flush valve assembly 101 may allow siphon flush valve assembly 101 to be accommodated in more tanks 143 (e.g., toilet tanks) as tanks 143 are generally more wide than deep. Although a circular and elliptical siphon flush valve are described, a siphon flush valve assembly 101 may be other shapes.

[0066] Although flush valve assemblies 101 (e.g., siphon flush valves) of the present disclosure are depicted and described as substantially concentrically arranged flush valve assemblies 101 (e.g., siphon flush valves), other shapes and arrangements are possible. A substantially concentric siphon flush valve may allow for uniform flow from the tank 143 into a siphon flush valve. Uniform flow may improve the efficiency and rate of flow in a siphon flush valve assembly 101 (e.g., siphon flush valve). Other contemplated shapes and arrangements (e.g. non-concentric arrangements) may also exhibit uniform flow from the tank 143 into a siphon flush valve assembly 101 (e.g., siphon flush valve).

[0067] A system 100 (e.g., toilet system) may include a control assembly (e.g., controller 164). A control assembly may be coupled to a tank 143. A control assembly may be coupled to an exterior of the tank 143. A control assembly may be coupled to an interior of the tank 143 within a water proof compartment or container. A control assembly may include one or more of a sensor, a battery, wiring, or a printed circuit board controller (e.g., controller 164). A sensor may be an infrared sensor (IR sensor) for detecting the presence and/or absence of a user at system 100 (e.g., toilet). A control assembly may be associated with actuator 105. Alternatively, a sensor may be omitted and a system 100 may be actuated by manual flush handle or button actuator. An actuator 105 is controllable between an on position and an off position. In an on position, actuator 105 may cause liquid to spill over weir 205 to form a siphon flow (e.g., by causing a pressure differential, by increasing water level, etc.). In an off position, actuator 105 may stop initiating a siphon flow (e.g., stop causing a pressure differential, stop increasing water level, etc.) and the siphon flow may stop once the water level is below the siphon flush valve inlet 206. In some embodiments, actuator 105 may include a metering valve or hydro-mechanical valve. Hydro-mechanical and/or metering valves may stop the actuator 105 (e.g., after a predetermined amount of time, based on sensor data, etc.). A printed circuit board may send and receive signals from sensor to and from actuator 105. A battery may be a battery pack and may supply power to the various electric components. A control assembly may be mounted on a mounting board.

[0068] Spray initiators of the present disclose may form a pattern, annular in form, from the center of an initiator head diverging toward and making contact with the bore of the core structure 201. In some embodiments, system 100 may include a vacuum breaker positioned upstream (prior to) a spray initiator.

[0069] Divergent spray angles ranging from about 50 degrees to about 120 degrees may be provided. A spray pattern may be solid or hollow in form and may be cone, square, pyramid, or oval, etc. in shape. Spray initiators may be singular or plurality part construction. A spray initiator 203 may be fixed permanently or made for ease of removal for maintenance. A spray initiator 203 may be fixed by overmolding, glue, interference fit, screw, or bayonet thread. In some embodiments, a connection between a spray initiator 203 and a head structure 202 (e.g., siphon flush valve head) may be sealed (e.g., leak-free).

[0070] In some embodiments, flush valve assemblies 101 of the present disclosure allow for a flapperless flush system. In some embodiments, flush valve assemblies 101 (e.g., siphon flush valves) of the present disclose allow for a system 100 which does not leak due to worn, chemically degraded, damaged, etc. flapper seals. In some embodiments, flush valve assemblies 101 of the present disclosure allow for a siphon flush valve assembly 101 with no moving parts, reducing the likelihood of damage, failure, and/or need for repair. A concentric design of the head structure 202 with respect to the core structure 201 allows for higher flow throughput in a compact structure.

[0071] In some embodiments, flush valve assemblies 101 (e.g., siphon flush valves) of the present disclosure may be combined with a bidet and/or a tankless toilet. In some embodiments, flush valve assemblies 101 (e.g., siphon flush valves) of the present disclosure may work with one-piece and two-piece toilets having a water tank reservoir. For a one-piece toilet, a siphon flush valve assembly 101 may have a base fixation type that may differ from the two-piece toilet (e.g. the threaded spud with nut). In some embodiments, flush valve assemblies 101 (e.g., siphon flush valves) of the present disclose may be provided to a toilet having a remote tank or cistern. For example, a tank or cistern hidden in a wall. In this example, additional water conduits may be used.

[0072] FIGS. 2C-E illustrate siphon flush valve assembly 101 that is coupled to actuator 105 coupled and includes fan blades 220. FIG. 2C is a cross-sectional front view, FIG. 2D is a front view, and FIG. 2E is a top view of siphon flush valve assembly 101.

[0073] In some embodiments, fan blades 220 are configured to cause a negative pressure (e.g., a pressure differential) in the core structure 201. In some embodiments, the fan blades 220 are coupled to a drive shaft 230 that is coupled to the actuator 105. In some embodiments, the actuator 105 is a motor (e.g., electric motor, DC motor, etc.). In some embodiments, the actuator 105 is disposed on the head structure 202. In some embodiments, a fitting 224 is disposed in an opening formed by head structure 202. The fitting 224 may be disposed between the drive shaft 230 and the head structure 202.

[0074] In some embodiments, the head structure 202 is a bell siphon head. In some embodiments, the core structure 201 is a housing. In some embodiments, the fan blades 220 are a fan or turbine for generating negative pressure. As shown in FIGS. 2D-E, the head structure 202 and/or the actuator 105 may have a circular perimeter.

[0075] The water level start 226 may be at or below the weir 205. Responsive to the actuator 105 causing a negative pressure in the core structure 201 by rotation the fan blades 220 via the drive shaft 230, the water level rises above the weir 205 and falls through the core structure 201 to form a siphon flow. The siphon flow continues until the water level reaches the water level stop 228 that allows air to enter the siphon flush valve inlet 206 to stop the siphon flow. \

[0076] Use of fan blades 220 allows the siphon flush valve assembly 101 to function in low water pressure supply environments. System 100 may use electronic controls (e.g., eliminate manual input variations). The system 100 may further include a battery pack, electronic controller, user interface, etc.

[0077] FIGS. 3A-F illustrate components of plumbing fixture systems, according to certain embodiments. FIGS. 3A-F illustrate actuator 105 coupled to different components to initiate the siphon flow of the siphon flush valve assembly 101

[0078] FIGS. 3A-B illustrate systems 100 (e.g., plumbing fixture systems, tank assemblies) that include an actuator 105 and a siphon flush valve assembly 101. FIG. 3A is a top view of system 100. FIG. 3B is a cross-sectional front view of system 100. Siphon flush valve assembly 101 may be a bell siphon that includes a spray nozzle (e.g., spray initiator, spray device, spray nozzle, sprayer). Actuator 105 may be an electric pump that provides electric pump water supply to the spray nozzle.

[0079] In some embodiments, siphon flush valve assembly 101 is a siphon flush valve assembly that includes a core structure 102 (e.g., tubular core) and a head structure 103. In some embodiments, siphon flush valve assembly 101 is configured to be automatically electrically initiated via sensor 104 (e.g., presence sensor, touch or touchless activation component). Responsive to receiving sensor data from sensor 104, controller detects presence and subsequent absence of a user and causes actuator 105 to start (e.g., activates submersible low voltage pump), causing fluid flow from actuator inlet 310 to actuator 105 to conduit 108 (e.g., pressurized hose feeding spray nozzle) to spray fitting 109 to a spray initiator coupled to spray fitting 109 in head structure 103 and into core structure 102 to initiate a siphon flow. Upon initiation of a siphon flow, flush water exits core structure 102 through tank outlet 113 to a bowl of the plumbing fixture. Sensor 104 is in electronic communication with one or more batteries in battery housing 110 and electrical wires 111. Battery housing 110 may include a battery pack and logic controller (e.g., controller 164).

[0080] In some embodiments,

[0081] FIG. 3C illustrates a system 100 that includes an actuator 105 (e.g., linear electric motor, rotational trip lever, etc.) coupled to an object 320 (e.g., displacement float). The siphon flush valve assembly 101 may be a bell siphon flush valve assembly that does not have a spray nozzle. Responsive to user input or sensor data (e.g., via user interface 162), controller 164 may cause actuator 105 to move object 320 to be at least partially submerged in liquid 122 in tank 143 to raise the water level W to cause a siphon flow. In some embodiments, actuator 105 is a rotational trip lever that allows object 320 to rotate to become at least partially submerged in the liquid 122 (e.g., a plunge displacement method).

[0082] FIG. 3D illustrates a system 100 that includes an actuator 105 (e.g., linear electric motor, telescoping component, etc.) coupled to a siphon flush valve assembly 101. The siphon flush valve assembly 101 may be a bell siphon flush valve assembly that does not have a spray nozzle. Responsive to user input or sensor data (e.g., via user interface 162), controller 164 may cause actuator 105 to lower at least a portion of siphon flush valve assembly 101 in the liquid 122. In some embodiments, siphon flush valve assembly 101 includes a bellows sealing component 330 that allows for vertical movement of telescoping valve body (e.g., core structure 201) of siphon flush valve assembly 101. In some embodiments, the bellows sealing component 330 is configured to move in the vertical direction.

[0083] In some embodiments, responsive to user input or sensor data via user interface 162, controller 164 causes actuator 105 to push down (e.g., from above head structure 202) on head structure 202 (e.g., bell siphon head) of flush valve assembly 101 so that the weir is lower than water level W to initiate the siphon flow.

[0084] In some embodiments, responsive to user input or sensor data via user interface 162, controller 164 causes actuator 105 to pull down (e.g., from below head structure 202) head structure 202 (e.g., bell siphon head) of flush valve assembly 101 so that the weir is lower than water level W to initiate the siphon flow.

[0085] In some embodiments, the user interface 162 includes a push button that is coupled to head structure 202 of siphon flush valve assembly 101. Responsive to user input pushing on user interface 162, the user interface 162 pushes head structure 202 so that weir is below the water level.

[0086] In some embodiments, the controller 164 controls actuator 105 via manual, electric, and/or pneumatic action.

[0087] FIGS. 3E-F illustrate systems 100 that include an actuator 105 (e.g., electric motor, DC motor, etc.) coupled to a floating piston 340 disposed in a housing 350 (e.g., cylinder containing secondary volume of water). The siphon flush valve assembly 101 may be a bell siphon flush valve assembly that does not have a spray nozzle. Responsive to user input or sensor data (e.g., via user interface 162), controller 164 may cause actuator 105 to lower a floating piston 340 in housing 350 to cause liquid 122 to exit the housing 350 via one or more openings 360 (e.g., transfer ports) formed by the housing 350 to raise the water level to be above the weir to initiate a siphon flow.

[0088] In some embodiments, responsive to user input or sensor data via user interface 162, controller 164 causes actuator 105 to push down (e.g., from above floating piston 340) on floating piston 340 so that the water level W is higher than the weir to initiate the siphon flow.

[0089] In some embodiments, responsive to user input or sensor data via user interface 162, controller 164 causes actuator 105 to pull down (e.g., from below floating piston 340) floating piston 340 so that the water level W is above the weir to initiate the siphon flow.

[0090] In some embodiments, the user interface 162 includes a push button that is coupled to floating piston 340. Responsive to user input pushing on user interface 162, the user interface 162 pushes floating piston 340 so that the water level W is above the weir.

[0091] In some embodiments, the controller 164 controls actuator 105 via manual, electric, and/or pneumatic action.

[0092] FIG. 4 illustrates a flow diagram of a method 400 associated with using an actuator to cause siphon flow in a plumbing fixture, according to certain embodiments. In some embodiments, method 400 is performed by processing logic that includes hardware (e.g., circuitry, dedicated logic, programmable logic, microcode, processing device, etc.), software (such as instructions run on a processing device, a general purpose computer system, or a dedicated machine), firmware, microcode, or a combination thereof. In some embodiments, a non-transitory machine-readable storage medium stores instructions that when executed by a processing device, cause the processing device to perform one or more of method 400. In some embodiments, any of the methods described herein are performed by a server, by a client device, and/or a controller (e.g., controller 164 of one or more of FIGS. 1A-B).

[0093] For simplicity of explanation, method 400 is depicted and described as a series of operations. However, operations in accordance with this disclosure can occur in various orders and/or concurrently and with other operations not presented and described herein. Furthermore, in some embodiments, not all illustrated operations are performed to implement method 400 in accordance with the disclosed subject matter. In addition, those skilled in the art will understand and appreciate that method 400 could alternatively be represented as a series of interrelated states via a state diagram or events.

[0094] Referring to FIG. 4, in some embodiments, at block 402 the processing logic receives user input associated with flushing a plumbing fixture. In some embodiments, the plumbing fixture is a toilet (e.g., tank toilet, tankless toilet) or a urinal.

[0095] In some embodiments, the user input is via actuation of a lever or a button coupled to the plumbing fixture or proximate the plumbing fixture. In some embodiments, the user input is received via a motion sensor (e.g., detecting motion of a user proximate the plumbing fixture, such as a user moving away from the plumbing fixture). In some embodiments, the user input is via a schedule (e.g., flush the plumbing fixture every threshold amount of time, such as every five minutes). In some embodiments, the user input is received from a client device via a network. In some embodiments, user input indicates a type of flush (e.g., higher gpf flush or lower gpf flush).

[0096] At block 404, the processing logic actuates an electric actuator to induce a siphon flow of liquid via a siphon flush valve assembly (e.g., to provide a flushing operation).

[0097] In some embodiments, the electric actuator is disposed in the plumbing fixture tank. The electric actuator is configured to induce, via the siphon flush valve assembly, a siphon flow of a portion of the liquid from the plumbing fixture tank into the plumbing fixture bowl. The electric actuator may induce the siphon flow to provide a flushing operation without using a flapper.

[0098] In some embodiments, the electric actuator is coupled to one or more fan blades disposed in the siphon flush valve assembly (e.g., see FIGS. 2C-E). The electric actuator may cause the fan blades to rotate to cause a negative pressure to cause the liquid in the siphon flush valve inlet to rise to start the siphon flow.

[0099] In some embodiments, the electric actuator includes an electric pump configured to provide liquid flow through a spray nozzle into the siphon flush valve assembly to induce the siphon flow via the siphon flush valve assembly (e.g., see FIGS. 3A-B).

[0100] In some embodiments, the electric actuator is configured to move a displacement object into the liquid in the plumbing fixture tank to raise liquid level in the plumbing fixture tank (e.g., to be above the weir) to induce the siphon flow via the siphon flush valve assembly (e.g., see FIG. 3C).

[0101] In some embodiments, the plumbing fixture system of claim 1, wherein the electric actuator is configured to lower the siphon flush valve assembly in the liquid in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly (e.g., see FIG. 3D).

[0102] In some embodiments, the electric actuator is configured to move a floating piston in a cylinder disposed in the plumbing fixture tank to raise liquid level of the liquid in the plumbing fixture tank (e.g., to be above the weir) to cause the siphon flow via the siphon flush valve assembly (e.g., see FIG. 3D).

[0103] In some embodiments, the electric actuator is configured to cause airflow through the siphon flush valve assembly to cause the siphon flow via the siphon flush valve assembly. The airflow through the siphon flush valve assembly causes a negative pressure (e.g., pressure differential) within the siphon flush valve assembly which raises the liquid level to be above the weir to start the siphon flow (e.g., see FIGS. 3E-F).

[0104] In some embodiments, a fill valve provides liquid into tank 143 and/or bowl responsive to block 404. In some embodiments, the processing logic causes fill valve assembly to provide liquid into tank and/or bowl. In some embodiments, water level of the tank lowering (e.g., responsive to block 404), causes fill valve to provide liquid into the tank and/or bowl.

[0105] At block 406, the processing logic actuates the electric actuator (e.g., stops the electric actuator) subsequent to inducing the siphon flow. In some embodiments, the processing logic stops the electric actuator a predetermined amount of time after starting the electric actuator. In some embodiments, the processing logic stops the electric actuator based on sensor data.

[0106] FIG. 5 is a block diagram illustrating a computer system 500, according to certain embodiments. In some embodiments, the computer system 500 is a controller 164 of one or more of FIGS. 1A-B.

[0107] In some embodiments, computer system 500 is connected (e.g., via a network, such as a Local Area Network (LAN), an intranet, an extranet, or the Internet) to other computer systems. In some embodiments, computer system 500 operates in the capacity of a server or a client computer in a client-server environment, or as a peer computer in a peer-to-peer or distributed network environment. In some embodiments, computer system 500 is provided by a personal computer (PC), a tablet PC, a Set-Top Box (STB), a Personal Digital Assistant (PDA), a cellular telephone, a web appliance, a server, a network router, switch or bridge, or any device capable of executing a set of instructions (sequential or otherwise) that specify actions to be taken by that device. Further, the term computer shall include any collection of computers that individually or jointly execute a set (or multiple sets) of instructions to perform any one or more of the methods described herein.

[0108] In a further aspect, the computer system 500 includes a processing device 502, a volatile memory 504 (e.g., Random Access Memory (RAM)), a non-volatile memory 506 (e.g., Read-Only Memory (ROM) or Electrically-Erasable Programmable ROM (EEPROM)), and a data storage device 516, which communicate with each other via a bus 508.

[0109] In some embodiments, processing device 502 is provided by one or more processors such as a general purpose processor (such as, for example, a Complex Instruction Set Computing (CISC) microprocessor, a Reduced Instruction Set Computing (RISC) microprocessor, a Very Long Instruction Word (VLIW) microprocessor, a microprocessor implementing other types of instruction sets, or a microprocessor implementing a combination of types of instruction sets) or a specialized processor (such as, for example, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), a Digital Signal Processor (DSP), or a network processor).

[0110] In some embodiments, computer system 500 further includes a network interface device 522 (e.g., coupled to network 574). In some embodiments, computer system 500 also includes a video display unit 510 (e.g., an LCD), an alphanumeric input device 512 (e.g., a keyboard), a cursor control device 514 (e.g., a mouse), and a signal generation device 520.

[0111] In some implementations, data storage device 516 includes a non-transitory computer-readable storage medium 524 on which store instructions 526 encoding any one or more of the methods or functions described herein, including instructions for implementing methods described herein.

[0112] In some embodiments, instructions 526 also reside, completely or partially, within volatile memory 504 and/or within processing device 502 during execution thereof by computer system 500, hence, in some embodiments, volatile memory 504 and processing device 502 also constitute machine-readable storage media.

[0113] While computer-readable storage medium 524 is shown in the illustrative examples as a single medium, the term computer-readable storage medium shall include a single medium or multiple media (e.g., a centralized or distributed database, and/or associated caches and servers) that store the one or more sets of executable instructions. The term computer-readable storage medium shall also include any tangible medium that is capable of storing or encoding a set of instructions for execution by a computer that cause the computer to perform any one or more of the methods described herein. The term computer-readable storage medium shall include, but not be limited to, solid-state memories, optical media, and magnetic media.

[0114] In some embodiments, the methods, components, and features described herein are implemented by discrete hardware components or are integrated in the functionality of other hardware components such as ASICS, FPGAs, DSPs or similar devices. In some embodiments, the methods, components, and features are implemented by firmware modules or functional circuitry within hardware devices. In some embodiments, the methods, components, and features are implemented in any combination of hardware devices and computer program components, or in computer programs.

[0115] Unless specifically stated otherwise, terms such as receiving, causing, actuating, providing, obtaining, determining, transmitting, or the like, refer to actions and processes performed or implemented by computer systems that manipulates and transforms data represented as physical (electronic) quantities within the computer system registers and memories into other data similarly represented as physical quantities within the computer system memories or registers or other such information storage, transmission or display devices. In some embodiments, the terms first, second, third, fourth, etc. as used herein are meant as labels to distinguish among different elements and do not have an ordinal meaning according to their numerical designation.

[0116] Examples described herein also relate to an apparatus for performing the methods described herein. In some embodiments, this apparatus is specially constructed for performing the methods described herein, or includes a general purpose computer system selectively programmed by a computer program stored in the computer system. Such a computer program is stored in a computer-readable tangible storage medium.

[0117] Some of the methods and illustrative examples described herein are not inherently related to any particular computer or other apparatus. In some embodiments, various general purpose systems are used in accordance with the teachings described herein. In some embodiments, a more specialized apparatus is constructed to perform methods described herein and/or each of their individual functions, routines, subroutines, or operations. Examples of the structure for a variety of these systems are set forth in the description above.

[0118] The above description is intended to be illustrative, and not restrictive. Although the present disclosure has been described with references to specific illustrative examples and implementations, it will be recognized that the present disclosure is not limited to the examples and implementations described. The scope of the disclosure should be determined with reference to the following claims, along with the full scope of equivalents to which the claims are entitled.

[0119] The preceding description sets forth numerous specific details such as examples of specific systems, components, methods, and so forth in order to provide a good understanding of several embodiments of the present disclosure. It will be apparent to one skilled in the art, however, that at least some embodiments of the present disclosure may be practiced without these specific details. In other instances, well-known components or methods are not described in detail or are presented in simple block diagram format in order to avoid unnecessarily obscuring the present disclosure. Thus, the specific details set forth are merely exemplary. Particular implementations may vary from these exemplary details and still be contemplated to be within the scope of the present disclosure.

[0120] The terms over, under, between, disposed on, and on as used herein refer to a relative position of one material layer or component with respect to other layers or components. For example, one layer disposed on, over, or under another layer may be directly in contact with the other layer or may have one or more intervening layers. Moreover, one layer disposed between two layers may be directly in contact with the two layers or may have one or more intervening layers. Similarly, unless explicitly stated otherwise, one feature disposed between two features may be in direct contact with the adjacent features or may have one or more intervening layers.

[0121] The words example or exemplary are used herein to mean serving as an example, instance or illustration. Any aspect or design described herein as example or exemplary is not necessarily to be construed as preferred or advantageous over other aspects or designs. Rather, use of the words example or exemplary is intended to present concepts in a concrete fashion.

[0122] Reference throughout this specification to one embodiment, an embodiment, or some embodiments means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase in one embodiment, in an embodiment, or in some embodiments in various places throughout this specification are not necessarily all referring to the same embodiment. In addition, the term or is intended to mean an inclusive or rather than an exclusive or. That is, unless specified otherwise, or clear from context, X includes A or B is intended to mean any of the natural inclusive permutations. That is, if X includes A; X includes B; or X includes both A and B, then X includes A or B is satisfied under any of the foregoing instances. In addition, the articles a and an as used in this application and the appended claims should generally be construed to mean one or more unless specified otherwise or clear from context to be directed to a singular form. Also, the terms first, second, third, fourth, etc. as used herein are meant as labels to distinguish among different elements and can not necessarily have an ordinal meaning according to their numerical designation. When the term about, substantially, or approximately is used herein, this is intended to mean that the nominal value presented is precise within 10%.

[0123] Although the operations of the methods herein are shown and described in a particular order, the order of operations of each method may be altered so that certain operations may be performed in an inverse order so that certain operations may be performed, at least in part, concurrently with other operations. In another embodiment, instructions or sub-operations of distinct operations may be in an intermittent and/or alternating manner. Following are some non-limiting embodiments of the disclosure.

[0124] In a first embodiment, disclosed is a plumbing fixture system comprising: a plumbing fixture bowl; a plumbing fixture tank coupled to the plumbing fixture bowl, wherein the plumbing fixture tank is configured to house liquid; a siphon flush valve assembly disposed in the plumbing fixture tank; and an electric actuator configured to induce, via the siphon flush valve assembly, a siphon flow of a portion of the liquid from the plumbing fixture tank into the plumbing fixture bowl.

[0125] In a second embodiment, disclosed is a plumbing fixture assembly according to embodiment 1, wherein the electric actuator is configured to rotate a drive shaft coupled to one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

[0126] In a third embodiment, disclosed is a plumbing fixture assembly according to any of the preceding embodiments, wherein the electric actuator is a direct current electric motor that is disposed in the plumbing fixture tank.

[0127] In a fourth embodiment, disclosed is a plumbing fixture assembly according to any of the preceding embodiments, wherein the siphon flush valve assembly comprises a core structure and a head structure that surround a distal end of the core structure, wherein the one or more fan blades are disposed in the core structure, wherein the drive shaft extends through the head structure and the core structure.

[0128] In a fifth embodiment, disclosed is a plumbing fixture assembly according to any of the preceding embodiments, wherein the electric actuator comprises an electric pump configured to provide liquid flow through a spray nozzle into the siphon flush valve assembly to induce the siphon flow via the siphon flush valve assembly.

[0129] In a sixth embodiment, disclosed is a plumbing fixture assembly according to any of the preceding embodiments, wherein the electric actuator is configured to move a displacement object into the liquid in the plumbing fixture tank to raise liquid level in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly.

[0130] In a seventh embodiment, disclosed is a plumbing fixture assembly according to any of the preceding embodiments, wherein the electric actuator is configured to lower the siphon flush valve assembly in the liquid in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly.

[0131] In an eighth embodiment, disclosed is a plumbing fixture assembly according to any of the preceding embodiments, wherein the electric actuator is configured to move a piston in a cylinder disposed in the plumbing fixture tank to raise liquid level of the liquid in the plumbing fixture tank to cause the siphon flow via the siphon flush valve assembly.

[0132] In a ninth embodiment, disclosed is a plumbing fixture assembly according to any of the preceding embodiments, wherein the electric actuator is configured to cause airflow through the siphon flush valve assembly to cause the siphon flow via the siphon flush valve assembly.

[0133] In a tenth embodiment, disclosed is a siphon flush valve assembly comprising: a core structure comprising a first distal end and a second distal end, wherein the first distal end forms a weir, and wherein the second distal end forms a siphon flush valve outlet; a head structure surrounding the first distal end of the core structure, wherein a lower portion of the head structure forms a siphon flush valve inlet; and one or more fan blades configured to induce a siphon flow of surrounding liquid through the siphon flush valve inlet, over the weir, and out the siphon flush valve outlet.

[0134] In a eleventh embodiment, disclosed is a siphon flush valve assembly according to embodiment 10 further comprising an electric actuator configured to rotate a drive shaft coupled to the one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

[0135] In a twelfth embodiment, disclosed is a siphon flush valve assembly according to any of the preceding embodiments, wherein the electric actuator is a direct current electric motor configured to be disposed in a plumbing fixture tank with the siphon flush valve assembly.

[0136] In a thirteenth embodiment, disclosed is a siphon flush valve assembly according to any of the preceding embodiments further comprising a pneumatic actuator configured to rotate a drive shaft coupled to the one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

[0137] In a fourteenth embodiment, disclosed is a siphon flush valve assembly according to any of the preceding embodiments further comprising a hydraulic actuator configured to rotate a drive shaft coupled to the one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

[0138] In a fifteenth embodiment, disclosed is a control system comprising: a user interface configured to receive user input associated with flushing a plumbing fixture; and a controller configured to: receive the user input; and responsive to the user input, actuate an electric actuator to induce a siphon flow of liquid via a siphon flush valve assembly from a plumbing fixture tank of the plumbing fixture to a plumbing fixture bowl of the plumbing fixture.

[0139] In an sixteenth embodiment, disclosed is a control system according to embodiment 15, wherein the electric actuator is configured to rotate a drive shaft coupled to one or more fan blades to cause the siphon flow via the siphon flush valve assembly.

[0140] In a seventeenth embodiment, disclosed is a control system according to any of the preceding embodiments, wherein the electric actuator is a direct current electric motor that is disposed in the plumbing fixture tank.

[0141] In an eighteenth embodiment, disclosed is a control system according to any of the preceding embodiments, wherein the siphon flush valve assembly comprises a core structure and a head structure that surround a distal end of the core structure, wherein the one or more fan blades are disposed in the core structure, wherein the drive shaft extends through the head structure and the core structure.

[0142] In a nineteenth embodiment, disclosed is a control system according to any of the preceding embodiments, wherein the electric actuator comprises an electric pump configured to provide liquid flow through a spray nozzle into the siphon flush valve assembly to induce the siphon flow via the siphon flush valve assembly.

[0143] In a twentieth embodiment, disclosed is a control system according to any of the preceding embodiments, wherein the electric actuator is configured to one or more of: move a displacement object into the liquid in the plumbing fixture tank raise liquid level in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly; lower the siphon flush valve assembly in the liquid in the plumbing fixture tank to induce the siphon flow via the siphon flush valve assembly; move a piston in a cylinder disposed in the plumbing fixture tank to raise the liquid level of the liquid in the plumbing fixture tank to cause the siphon flow via the siphon flush valve assembly; or cause airflow through the siphon flush valve assembly to cause the siphon flow via the siphon flush valve assembly.

[0144] Although the foregoing description is directed to embodiments of the invention, it is noted that other variations and modifications will be apparent to those skilled in the art, and may be made without departing from the spirit or scope of the invention. Moreover, features described in connection with one embodiment of the invention may be used in conjunction with other embodiments, even if not explicitly stated above.

[0145] The term adjacent may mean near or close-by or next to.

[0146] The term coupled means that an element is attached to or associated with another element. Coupled may mean directly coupled or coupled through one or more other elements. An element may be coupled to an element through two or more other elements in a sequential manner or a non-sequential manner. The term via in reference to via an element may mean through or by an element. Coupled or associated with may also mean elements not directly or indirectly attached, but that they go together in that one may function together with the other.

[0147] The term flow communication means for example configured for liquid or gas flow there through and may be synonymous with fluidly coupled. The terms upstream and downstream indicate a direction of gas or liquid flow, that is, gas or fluid will flow from upstream to downstream.

[0148] The term towards in reference to a of point of attachment, may mean at exactly that location or point or, alternatively, may mean closer to that point than to another distinct point, for example towards a center means closer to a center than to an edge.

[0149] The term like means similar and not necessarily exactly like. For instance ring-like means generally shaped like a ring, but not necessarily perfectly circular.

[0150] The articles a and an herein refer to one or to more than one (e.g. at least one) of the grammatical object. Any ranges cited herein are inclusive. The term about used throughout is used to describe and account for small fluctuations. For instance, about may mean the numeric value may be modified by 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10% or more. All numeric values are modified by the term about whether or not explicitly indicated. Numeric values modified by the term about include the specific identified value. For example about 5.0 includes 5.0.

[0151] The term substantially is similar to about in that the defined term may vary from for example by 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10% or more of the definition; for example the term substantially perpendicular may mean the 90 perpendicular angle may mean about 90 The term generally may be equivalent to substantially.

[0152] Features described in connection with one embodiment of the disclosure may be used in conjunction with other embodiments, even if not explicitly stated.

[0153] Embodiments of the disclosure include any and all parts and/or portions of the embodiments, claims, description and figures. Embodiments of the disclosure also include any and all combinations and/or sub-combinations of embodiments.

[0154] It is understood that the above description is intended to be illustrative, and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reading and understanding the above description. The scope of the disclosure should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

[0155] All U.S. patent applications, published patent applications and patents referred to herein are hereby incorporated by reference.