Ceiling tile with built-in air flow mechanism and UV air purifying device

Abstract

Disclosed embodiments relate to a combination axial fan and LED lighting system configured to fit into the footprint of a standard ceiling tile. Disclosed embodiments further include ceiling tiles with a built-in fan and/or LED lighting. The disclosed systems may include a housing container and an axial fan. The fan has a fan cavity including air diversion mechanism to direct air from the fan cavity toward the lighting and fan components. The inventions include an airflow surface to direct air existing the fan cavity along an LED light fixture. Moreover, disclosed embodiments include one or more UV light sources which irradiate contaminants as air flows through the ceiling tile.

Claims

1. An air purifying device, comprising: a ceiling tile having at least one vent and one fan portion; an upper cover attached to the ceiling tile defining at least an airway between the fan portion and the vent; a fan positioned in the fan portion adapted to guide air to the airway; a UV light source mounted in the airway, wherein the UV light source is a UV-C light source emitting light having a wavelength between 200 and 280 nanometers; a first baffle positioned in the airway and a second baffle positioned in the airway, wherein the first baffle and second baffle are configured to direct air guided by the fan to the airway along the UV light source; and wherein the first baffle and the second baffle are positioned in the first airway to act as a barrier preventing light emitted from the UV light source from exiting the air purifying device.

2. The air purifying device of claim 1, wherein the first baffle accommodates a UV reflective material.

3. The air purifying of claim 2, wherein the second baffle accommodates a UV reflective material.

4. The air purifying device of claim 1, wherein the cover includes a UV reflective material.

5. The air purifying device of claim 1, wherein the ceiling tile includes a UV reflective material.

6. The air purifying device of claim 4, wherein the ceiling tile includes a UV reflective material.

7. The air purifying device of claim 1, wherein the first baffle and second baffle create a kill zone which kills bacteria, viruses or microbes present in the air guided by the fan to the airway.

8. The air purifying device of claim 2, further comprising a second fan mounted to the fan portion of the ceiling tile and in-line with the first fan.

9. The air purifying device of claim 8, wherein the first and second fan are configured to rotate in opposite directions.

10. The air purifying device of claim 1, further comprising an LED light source affixed to the ceiling tile.

11. The air purifying device of claim 1, further comprising an actuator to control the operation of the UV light source.

12. The air purifying device of claim 11, wherein the actuator is a remote control unit.

13. The air purifying device of claim 1, further comprising an indicator light source providing a visual indication when the UV light source is operating.

14. An air purifying device comprising: a face-plate configured the size of a ceiling tile, wherein the face-plate includes a fan portion and a vent portion; a cover attached to the face-plate forming an air chamber between the face-plate and the cover; a fan positioned in the fan portion of the face-plate, wherein said fan directs air through the air chamber to the vent portion; a UV-C light fixture positioned in the air chamber wherein the UV-C light fixture emits UV light to form a kill zone within the air chamber; and a baffle positioned in proximity to the kill zone in the air chamber wherein the baffle is configured to direct air to the kill zone and prohibit the UV light from exiting the kill zone.

15. The air purifying device of claim 14, further comprising a LED light positioned on the face-plate.

16. The air purifying device of claim 14, wherein the UV-C light source emits UV-C light waves having a wavelength between 200 and 280 nanometers.

17. The air purifying device of claim 16, wherein the UV-C light source operates to kill at least 99% of K. pneumoniae from the air.

18. The air purifying device of claim 14, further comprising a second baffle positioned in the air chamber attached to the housing and wherein the second baffle directs air to the kill zone.

19. The air purifying device of claim 14, wherein UV-C light fixture emits light capable of killing bacteria, viruses and microbes.

20. The air purifying device of claim 18, further comprising a third baffle positioned in the air chamber wherein at least one of the baffle or the second baffle accommodates a UV-reflective material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a sectional view of one embodiment of the combination light and fan fixture depicting a troffer shelf;

(2) FIG. 2 is a sectional view of one embodiment of the combination light and fan fixture showing the flow of air;

(3) FIG. 3 is a prospective view of one embodiment of the combination light and fan fixture depicting a troffer shelf;

(4) FIG. 4 is a sectional view of one embodiment of the combination light and fan fixture of another embodiment depicting an alternative embodiment of a troffer shelf;

(5) FIG. 5 is a sectional view of one embodiment of the combination light and fan fixture depicting an angled shell showing the flow of air;

(6) FIG. 6 is a sectional view of an alternative embodiment of the combination light and fan fixture depicting another embodiment of the angled deflection mechanism;

(7) FIG. 7 is a sectional view of yet another alternative embodiment of the combination light and fan fixture with the LED lighting fixture positioned in an indirect lighting configuration.

(8) FIG. 8 is a perspective view of the embodiment shown in FIG. 7;

(9) FIG. 9 is a perspective view of an embodiment of the present invention utilizing multiple round grills;

(10) FIG. 9A is a perspective view of the fan grate depicted in FIG. 9;

(11) FIG. 10 is a perspective view of an embodiment of the present invention utilizing a single grill and lens;

(12) FIG. 10A is a perspective view of the fan grate depicted in FIG. 10;

(13) FIG. 11 is a view of the present invention incorporating multiple fan blades;

(14) FIG. 11A is a view of the present invention incorporating multiple fan blades;

(15) FIG. 12 is a perspective view of an axial fan of the present invention;

(16) FIG. 13 is a bottom view of one embodiment of the combination light and fan fixture;

(17) FIG. 14 is a bottom view of an alternative combination light and fan fixture having 4 LED lights;

(18) FIG. 15 is a bottom view of a ceiling tile having intake fans, exhaust vents, and LED lighting;

(19) FIG. 16A is a cross section of a ceiling tile having a fan which directs air into a first and second airway;

(20) FIG. 16B is a cross section of a ceiling tile having a UV light source for irradiating air flow through an airway;

(21) FIG. 17 is an exploded view of components of a ceiling tile having two fans, two LED lighting strips, and an upper baffle for defining airways.

(22) FIG. 18 is a bottom view of a ceiling tile having intake fans, exhaust vents utilizing a UV light source for irradiating air flowing through the chambers;

(23) FIG. 19 is a perspective view of a ceiling tile having intake fans, exhaust vents utilizing a UV light source for irradiating air flowing through the chambers;

(24) FIG. 20(a) is a cross section of a ceiling tile having a UV light source for irradiating air flow through a chamber, a raw intake, exhaust vents and various baffles; and

(25) FIG. 20(b) is a cross section of a ceiling tile having a UV light source for irradiating air flow through a chamber, a raw intake, exhaust vents and baffles with a reflective material.

DETAILED DESCRIPTION OF THE INVENTION

(26) Embodiments of the present invention may comprise a combination of a fan and LED light fixture. FIGS. 1 and 2 show side sectional views of an embodiment of the present invention depicting a troffer shelf 12. FIG. 3 shows a perspective view of an embodiment having a troffer shelf. The combination fan 10 may include a troffer shelf 12 which supports at least one LED light fixture 20 and a fan 30. The fan 30 is supported by a louvered fan support 18. As shown in FIG. 3, the louvered fan support 18 has a lower solid portion 19 and an upper open portion 17 that includes several opening and louvers 60 which direct air from the fan chamber 13 along the troffer shelf 12. It is not material to the present invention where the solid portion 19 and open portion 17 is located in the fan support 18. What is important is that there is a solid portion 19 of the fan support 18 that braces the fan 30, and an open portion 17 that is configured to permit air to flow from the fan chamber 13 to the troffer chamber 16. The direction of the air flow is not necessarily important to the present invention. What is important is that the fan 30 causes air to flow in the vicinity of an LED light fixture 20.

(27) The troffer shelf 12 may have the same general dimensions as a ceiling tile typically 1 ft.×2 ft., 2 ft.×2 ft. or 2 ft.×4 ft. The LED light fixture 20 is typically positioned along the troffer chamber 16 along the troffer shelf 12 such that light from the fixture 20 is not interrupted by the fan 30. The LED light fixture may include an LED lamp 22. The LED light fixture 20 is preferably in the form of a strip which runs the length of the troffer shelf 12. The LED light fixture 20 is secured to the troffer shelf 12 in such a manner to permit air to flow along a substantial portion of the surface area of the LED lamp 22 and light fixture 20. The LED light fixture 20 may include a magnetic attachment mechanism to secure the light fixture 20 to the troffer shelf 12. The magnetic attachment mechanism serves multiple purposes including the ability to detach the LED light fixture 20 from the troffer shelf 12 in a relatively easy fashion. The magnetic attachment mechanism further serves to provide a space between the LED light fixture 20 and troffer shelf 12 for air to flow through which increases the surface area of the LED light fixture 20 that contacts the air. The greater the surface area of the LED light fixture 20 that comes in contact with the air flow, the faster and more efficient the temperature reduction of the LED light fixture. While LED light fixtures are discussed throughout this disclosure, it is understood that other types of lights may be utilized in the invention and benefit from the features of the invention.

(28) The fan 30 preferably includes at least an axial fan as shown in FIG. 12. Referring back to FIGS. 1, 2 and 3, there may be more than one fan within the fan area 13. The blades 32 of the fan 30 force air to move parallel to a shaft 34 about which the blades 32 rotate. Air flow 40 moves axially through the intake of the fan 36 and axially out through the outlet 38 of the fan 30. The flow of air is generally linear trough the intake 36 and the outlet 38. The design of the fan 30 is a function of the blade configuration 32 that creates a pressure of differential that produces airflow 40 across the fan blade 32. The fan 30 may consist of anywhere from 2 to 8 blades. The fan 30 is connected to a motor 51 and typically operates at high speeds. The typical speed of the axial fan of the present invention operates between 1800 to 4000 RPM to produce airflow in the range of 85 to 150 cubic feet per minute. While an axial fan is disclosed in the figures of the invention, it is understood that other types of fans such as a bladeless fan, cross-flow fan, or impeller-type fan may be used as the fan 30 in the embodiments shown in the figures. Any of those types of fans can be utilized without having a detrimental effect on the function and features of the invention. The important feature of the fan 30 is to move and distributes air within the fan area, regardless of the type of fan that was used.

(29) As shown in FIG. 2, the configuration of the troffer shelf 12 directs the flow of air from the outlet 38 of the fan 30. Air flows along the troffer shelf 12 and the troffer baffle 14, along the LED light fixture 20. Air passing along the LED light fixture 20 acts to dissipate heat produced by the LED light fixture 20 which reduces the operating temperature of the LED light fixture 20. In essence, the air flow reduces waste heat produced by the LED fixture 20 by conducting the heat away from the fixture 20. It is believed that the airflow in the current invention can reduce the temperature of the LED light fixture from approximately 120° F. to approximately 80° F. in the typical environment found in offices, hospitals, retail stores, educational institutions and the like.

(30) FIGS. 1, 2 and 3 depict a combination LED light fixture and fan 10. The air exiting the outlet 38 of the fan 30 is propelled into the fan chamber 13. The air in the fan chamber 13 as shown in FIG. 3, is directed by a diversion mechanism 50 so that the air flows through openings 17 in the fan support 18. The air flowing through the opening 17 is directed by louvres 60 into the light chamber 16, along the troffer shelf 12, to engage the LED light fixture 20. By directing air from the fan 20 along the troffer shelf 12 causes the air to circulate around the LED light fixture 20 to reduce the temperature of the light fixture 20. The air flow in the lighting chamber 16 is directed by the troffer baffle 14 through an exit vent 84 formed by the damper 81.

(31) In embodiments of the present invention, there may be a vent and lens bracket 80. The bracket 80 is affixed to the troffer shelf 12 in such a manner to permit air to flow from the light chamber 16 through an exit vent 84 formed by a damper 81 in the bracket 80. The vent 84 permits the air heated by LED light fixture 20 to exit the light chamber 16. The bracket 80 also includes a lens bracket 82. The lens bracket 82 corresponds with a fan lens bracket 83 to secure a lens 90 in place within the combination LED light and fan 10. The lens 90 provides a solid surface to assist with containing any air from the fan 30 such that it proceeds along the troffer shelf 12 and the troffer baffle 14 to the LED light fixture 20 and through the vent 84. A lens 90 is not necessary to the invention. However, the lens 90 typically made of a somewhat flexible translucent plastic material. There is a mounting mechanism 100 that is used to affix the combination LED light fixture and fan to an adjacent ceiling tile or bracket.

(32) Some embodiments of the present invention may incorporate the use of color displayed by the lighting system to affect the environment in which the combination LED light and fan fixture 10 may be implemented. Research has shown that different colors appear to affect behavioral traits in humans. For example, the color yellow is believed to influence a person's self-confidence; the color red is believed to influence a person's physical body, the color blue is believed to influence a person's mind and the color green is believed to influence a person's emotional balance. It is believed that, for example, the combination of a yellow color with a blue color will stimulate a person's emotional balance and mind. The different color combinations may be incorporated into the present invention in numerous ways. In one embodiment of the present invention, the colors blue, red, yellow or green may be applied to the internal surface of the troffer shelf 12 and/or the troffer baffle 14 by means of paint, insert or other known technique. Alternatively, the lens 90 may comprise of the colors blue, red, yellow or green. The colored lens 90 operates to transmit light of the lens color in an indoor space. Finally, the LED light fixture 20 itself may be configured to generate light in the blue, red, yellow or green spectrums by means of the LED lamp 22.

(33) The air exiting from the fan cavity 16 is directed along an airflow surface on the troffer shelf 12 and troffer baffles 14 air may alternatively be directed through a cooling chamber, which is not shown but functions to cool the fan components, as well as, the LED lighting components. The internal surface of the troffer shelf 12 and troffer baffles 14 may be coated with a Miro-Micro Matt wet paint produced by Alanod. The paint helps to maintain airflow along the surface, as well as, maintain a clean dust-free surface. The airflow 40 has two general components. The air that exits the fan cavity 13 generally has a laminar flow along the airflow surface of the troffer shelf 12. As the flow of air from the fan 30 extends towards the exterior perimeter of the troffer shelf 12 and troffer baffles 14 through the vent 84, the flow becomes more turbulent and mixes with the surrounding air. The preferred direction of the air-flow is such that the intake 36 of the fan 30 draws air from the lower portion of a space and distributes the air along the upper portion of the space. Air along the lower portion of an area tends to be cooler than air that resides at the upper portion of an area. The cooler air is pulled into the fan 30 and distributed from the cavity is used to cool and clean the LED light fixture 20, and/or the LED light bulb 22.

(34) The combination fan of the present invention may utilize the stepped-fan blade design depicted in the pending patent application Ser. No. 14/814,161, 15/043,923 and 15/346,913, each of which is hereby incorporated by reference, in the entirety. The benefits of the stepped-blade design are set-forth in detail in the pending patent applications referenced herein and need not be repeated in this provisional application and are not shown in the drawings. The stepped-fan blade design greatly improves the air flow characteristics of the fan 30.

(35) As shown in FIGS. 9, 9A, 10 and 10A, the fan intake 36 may include decorative perforations and/or a grill 39. The grills 39 may be of a circular configuration as shown in FIGS. 9 and 9A. Alternatively, the grill may extend the length of the fan intake 36 as shown in FIGS. 10 and 10A. The air intake 36 may also include a filter (not shown). Alternatively, the filter may be positioned at the air outlet 38 or at a grill covering the combination fan 39. The filter serves to clean air flowing through the fan of dust and other fine particles. The filters may be removed for cleaning or replacement on a periodic basis. The embodiments shown in FIGS. 10 and 10A are more adapted to accommodate a filter.

(36) In some embodiments of the inventions, the combination fan and LED light system further includes an air diversion mechanism 50. The air diversion mechanism 50 is positioned within the cavity of the fan chamber 13. The physical configuration of the air diversion mechanism 50 is such that it directs air exiting the fan outlet 38 through the louvered openings 17 or diffuser in the louvered fan holder 18. In some embodiments, the air diversion mechanism 50 is in the shape of a prism as shown in FIGS. 1 through 7. Alternatively, the air diversion mechanism 50 may be in the shape of a pyramid (FIG. 8), cone, pentagon, triangle or other suitable shape to divert air from the fan chamber 13, through the openings 17 and into the troffer chamber 16 along the LED light fixture 20. The air diversion mechanism directs air towards opening 17 along louvered vents 60 positioned along the inside fan chamber 13. The vents 17 may include louvres 60 to assist in directing the air in the desired direction. Positioned within the air diversion mechanism 50 is a ballast housing 51 for LED lighting ballast, drivers and wires. The ballast housing 51 houses the wiring for both the LED lighting system and the fan to allow for a single hook-up to the electrical outlets or connections positioned within the ceiling.

(37) The air exiting from the fan cavity 13 is directed along an airflow troffer shelf 12 to the troffer baffle 14. Air may alternatively be directed through a cooling chamber, which is not shown, but functions to cool the components located in the ballast housing 51, as well as, the LED lighting components.

(38) As shown in FIG. 2, air 40 enters the fan 30 and is expelled by the fan blades 32 into the air chamber 13. Air flow in the fan chamber is generally laminar. Air is forced into the air chamber 13 and is directed by a louvre 60 through an opening in the fan chamber 13 into the light chamber 16. The air (shown in arrows) has generally a laminar flow along the troffer shelf 12 and troffer baffle 14. As the flow of air from the fan 30 extends towards the exterior perimeter of the housing in the vent 84, the flow becomes more turbulent and mixes with the surrounding air such that the air exiting through the damper 81 is more turbulent in nature. The preferred direction of the air-flow is such that the intake 36 of the fan 30 draws air from the lower portion of a space and distributes the air along the upper portion of the space. Air along the lower portion of an area tends to be cooler than air that resides at the upper portion of an area. The cooler air is pulled into the fan 30 and distributed from the cavity is used to cool and clean the LED light fixture 20, the LED cover 24 and/or the LED light bulb 22. In an alternative embodiment, the direction of the airflow may be reversed.

(39) Turning to FIGS. 4, 5, 6 and 7, refer to alternative embodiments to the embodiment of FIGS. 1, 2 and 3. An alternative embodiment comprises a combination of a fan and LED light fixture. FIGS. 4, 5, 6 and 7 show views of different embodiments of the present invention.

(40) FIG. 4 depicts an alternative design of the troffer shelf and the troffer baffle 14. In the alternative design, air is propelled from the fan 30 into the fan chamber 13. The air from the fan 30 is deflected by a diversion mechanism 50, through the opening 17 and directed by louvres 60 into the light chamber 16. The louvres 60 are configured to direct the air from the fan along the troffer shelf 12 and along the troffer baffles 14. By directing air from the fan 30 along the troffer shelf 12 causes the air to circulate along LED light fixtures 20. The air flow helps to reduce the temperature of the LED light fixture 20. The air flow is directed by the troffer baffle 14 through an exit vent 84 formed by the damper 81, in the lens bracket 80.

(41) In FIG. 4, the troffer shelf 12 has more of a squared-shape. The troffer shelf 12 and the troffer baffle 14 intersect at generally right angles to each other. The fan 30 is positioned in generally the same position as demonstrated in FIG. 3. The fan chamber 13 includes a diverter 50 to direct air exiting the fan 30 through the open portion 17 of the fan chamber 13. Louvers 60 direct the air passing through the open portion 17 of the fan chamber 30 into the light chamber 16. Air flows along the troffer shelf 12 and the troffer baffle 14 passed the LED light fixture 20. Air passing along the light fixture passes along the plurality of LED light fixture 20 to dissipate the heat in the LED light fixture 20. The air follows a path along the air baffle through the vent 84 out of the light chamber 16.

(42) The bracket 80 includes a damper 81 and lens bracket 82. The embodiment includes a lens 90 which acts to diffuse the light emitted from the LED lights 20. There is a mounting mechanism 100 used to affix the combination LED light fixture and fan to an adjacent ceiling tile or bracket.

(43) The interior surface of the troffer shelf 12 and troffer baffle 114 may be coated with a Miro-Micro Matt wet paint produced by Alanod. The paint helps to maintain airflow along the surface, as well as, maintain a clean dust-free surface. The paint can be applied in any of the colors discussed above to affect the environment.

(44) As shown in FIGS. 5 and 6, the combination fan 110 includes a housing 112 which supports at least one LED light fixture 120 and a fan 130. The housing is the same dimensions as a ceiling tile typically 2 ft.×2 ft. or 2 ft.×4 ft. The LED light fixture 120 is preferably positioned along the periphery of the housing 112 such that light from the fixture 120 is not interrupted by the fan 130. The LED light fixture includes an LED light bulb 122.

(45) The alternative embodiments of the combination LED light fixture and fan 110 utilize an internal baffle 114. The internal baffle 114 serves to direct air within the troffer cavity 116 and provide support for the LED lighting 120. The embodiments depicted in FIGS. 5 and 6 include a fan 130 that directs air through a fan exit 138 in the fan chamber 113. The fan chamber 113 includes an air diverter 150 which may take on many different shapes, such as a prism shown in FIG. 5 or a trapezoidal shape shown in FIG. 6. Air from the fan chamber 113 is directed by the diverter 150 through the open portion 117 of the fan support 118. The air flowing through the open portion 117 of the fan support 118 is directed by louvres 160. As shown in FIG. 6, the air is directed by the louvres 160 into the baffle chamber 116 along the baffle 114 across the LED light 120. The air passing across the LED light 120 is directed by the baffle 114 through the exit vent 184.

(46) In FIG. 5, the baffle 114 guides air flowing through the openings 117 in the fan chamber 113 (which is directed by the baffles) along the LED light fixture 120. The air serves to reduce the temperature of the LED light fixture 120 and extend the life of the fixture 120. The baffle 114 guides the air flow from the LED light fixture 120 through the exit vent 184.

(47) The fan 130 preferably includes an axial fan. The blades 132 of the axial fan force air to move parallel to a shaft 134 about which the blades 132 rotate. The flow of air 140 is axially through the intake of the fan 136 and axially out through the outlet 138 of the fan 130. The flow of air is linear trough the intake 136 and the outlet 138. The design of the fan 130 is a function of the blade configuration 132 that creates a pressure of differential that produces airflow 140 across the fan blade 132. The axial fan 130 may consist of anywhere from 2 to 8 blades. The axial fan 130 is connected to an energy source (not shown) and typically operates at high speeds. The typical speed of the axial fan of the present invention operates between 1800 to 4000 RPM to produce airflow in the range of 85 to 150 cubic feet per minute. The combination fan of the present invention may utilize the stepped-fan blade design depicted in the pending patent applications referenced above.

(48) The fan intake 136 of FIGS. 5 and 6 may include decorative perforations and/or a grill as shown in FIGS. 9 and 10. The air intake 136 may also include a filter (not shown). Alternatively, the filter may be positioned at the air outlet 138 or at a screen covering the combination fan 142. The filter serves to clean air flowing through the fan of dust and other fine particles.

(49) One embodiment of the combination fan and LED light system 110 further includes an air diversion mechanism 150. The air diversion mechanism 150 is positioned within the fan chamber 113 of the fan 130. Looking at FIG. 14, the air diversion mechanism 150 is in the shape of a prism as shown in FIGS. 5, 6 and 13. Alternatively, the air diversion mechanism 150 may be in the shape of a pyramid (FIG. 14), cone, pentagon, triangle or other suitable shape to divert air to the LED components and into the office space. The air diversion mechanism 150 directs air towards vents 117 positioned along the fan cavity 113. The vents 117 may include louvres 160 to assist in directing the air in the desired direction. Additionally, the air diversion mechanism may have vents to permit a portion of the air circulated by the fan to enter the diversion mechanism 150 to provide a cooling effect on the ballast housing 151.

(50) The air exiting from the fan cavity 116 is directed along an airflow surface on the troffer baffle 114 air may alternatively be directed through a cooling chamber, which is not shown but functions to cool the fan components, as well as, the LED lighting components. The internal surface of the troffer baffle 114 is preferably coated with a Miro-Micro Matt wet paint produced by Alanod. The paint helps to maintain airflow along the surface, as well as, maintain a clean dust-free surface. The airflow 140 has two general components. The air that exits the fan cavity 113 generally has a laminar flow along the airflow surface of the lower housing portion 114. As the flow of air from the fan 130 extends towards the exterior perimeter of the housing 112 through the vent 184, the flow becomes more turbulent and mixes with the surrounding air. The preferred direction of the air-flow is such that the intake 136 of the fan 130 draws air from the lower portion of a space and distributes the air along the upper portion of the space. Air along the lower portion of an area tends to be cooler than air that resides at the upper portion of an area. The cooler air is pulled into the fan 130 and distributed from the cavity is used to cool and clean the LED light fixture 120, and/or the LED light bulb 122.

(51) An embodiment of the combination LED light fixture and fan 200 in which the LED light fixtures 220 are directed toward the ceiling is depicted in FIGS. 7 and 8. The combination LED light fixture and fan 200 in FIG. 7 includes a fan 220. The fan 230 may include an invented axial fan, or any fan that serves the purpose of distributing air in a relatively quiet fashion. The fan 230 includes an air inlet 236 and air exit 238. There is a fan chamber 216. Air is drawn from the indoor environment, through the air inlet 236 and propelled by the fan through the fan exit 238 into the fan chamber 213. There is a diverter 250 positioned within the fan chamber 213 to direct air from the fan through an open portion 117 of the fan support 218. The open portion 217 may include louvers 260 to guide the air from the fan chamber 213 into a troffer cavity 216.

(52) The combination LED light fixture and fan 210 has a domed shell 292. While a domed-shaped shell 292 is shown in some embodiments, any shaped shell may be utilized and still practice the invention. The shell 292 serves as a troffer. The shell 292 is configured to direct air from the troffer cavity 216 along the LED light fixtures 220 and through the exit vent 284. A lens 290 is positioned on top of the shell 292. The LED light fixtures 220 may be configured to direct light upward toward the ceiling or downward toward the shell 292. The shell 292 may be made of a solid material or alternatively a translucent material to permit light to penetrate the shell 292 into the room. The combination LED light fixture and fan 220 is supported from the ceiling by one or more mounting cables 294. The mounting cables 294 may be configured to accommodate power cables to supply power to the fan 230 and LED light fixtures 220.

(53) The combination LED light fixture and fan as shown in all the embodiments of the present invention may use a hard-wired control mechanism to control both the light 20 and fan 30. The invention may use an ethernet connection and remote control to activate the fan 30 and LED light fixture 20. Alternatively, a wi-fi (wireless) connection may be used in connection with a remote control to control the LED light 20 and fan 30. The remote control feature is configured to adjust the intensity (or color) of the LED light fixture 20 and the speed of the fan 30.

(54) The embodiments of the inventions shown in FIGS. 1 through 7 show a fan that is independent from the HVAC system of the building in which the combination LED lighting fixture and fan 10 may be installed. However, it is contemplated that the combination LED lighting fixture and fan 10 may be combined with the existing HVAC system in order to distribute the air from the HVAC system through fan chamber 13 and through the light chamber 16. The combination LED lighting fixture and fan 10 may be the primary source of distribution of the air from the HVAC system or it could be use in a supplemental capacity. If the HVAC system is implemented in connection with the combination LED light fixture and fan 20, the HVAC system could be connected to the combination LED light fixture and fan 10 at several locations. For example, the HVAC system could be configured to delivery air from the HVAC system into the fan chamber 13 or the light chamber 16 by connecting a duct from the HVAC system to either the fan chamber 13 or the troffer cavity. The fan 30 of combination LED light fixture and fan 10 provides a supplemental air delivery system to augment the HVAC system.

(55) As shown in FIGS. 11 and 11A, the combination fan may include two or more fans 30. In the multiple fan configuration, it is beneficial that adjacent fans rotate in different directions to provide a more even distribution of air along the fan 30. It is important to note that the adjacent fans rotate in opposite directions. As shown in FIG. 11A, the multiple fans may all rotate in the same direction.

(56) FIG. 12 depicts a fan 30 and 130 that may be used in embodiments of the inventions.

(57) Various aspects of this disclosure may include components which are implemented directly into a ceiling grid, or ceiling tile, as seen for example in FIG. 15. It is contemplated that an exemplary ceiling tile 1501 may be sized as 1′×4′; 2′×2′; or 2′×4′, although a person of skill in the art would understand that any appropriately sized ceiling tile may be used in accordance with the present inventions. Moreover, ceiling tile 1501 could be acoustical, fiber, wood, metal, translucent, plastic, sheet rock, or drywall structures as are known to be used in industrial, commercial, or residential environments.

(58) In embodiments of the inventions, ceiling tile 1501 may have one or more fans 1502 and vents 1503 cut into the ceiling tile 1501, sometimes referred to herein as a ceiling panel. Panel cuts may be made or manufactured using waterjet cutting, die cutting, laser cutting, CNC routing, CNC knife cutting, reciprocated knife cutting, or any other known techniques for cutting through tiles. Vents 1503 may take the form of elongated slot(s) extending near the edge of ceiling tile 1501, although other shapes are also contemplated. For example, FIG. 15 shows two elongated vents on the ceiling tile 1501's top edge, and two additional vents along the bottom edge. A person of skill in the art would understand that additional arrangements are contemplated. Optional LED strips 1504 may be included and may extend between the one or more fans 1502 and vents 1503.

(59) As seen in FIG. 16A, which is a cut-away side view of embodiments of the inventions, an upper baffle 1610 and one or more lower baffles 1620, 1621, may act together to define one or more airway(s). For example, air may pass from a fan 1502, along airway(s) 1630, 1631 (e.g. a first airway to the left and a second airway to the right), to vents 1503. Upper baffle 1610 may comprise an apex portion 1615 which is formed in close proximity to fan(s) 1502 and/or 1503. Embodiments in which an apex portion 1615 extends into proximity with fan(s) 1502 and/or 1503 provide the advantage of improved airflow: that is because apex portion 1615 forces air to split evenly towards the left and right side. In the absence of apex portion 1615, the direction of rotation of fan(s) 1502 and/or 1503 may lead to uneven air distribution. The apex portion 1615 performs a similar function to air diversion mechanism 50 described above. Indeed, a person of skill in the art would recognize that the air diversion mechanism 50 (See e.g. FIG. 1) may be included in the embodiment of FIG. 16. Preferably, fan(s) 1502 take in air, which is released out through vents 1503. In such an arrangement, fan(s) 1502 act as an air intake and vents 1503 act as an exhaust. A person of skill in the art would recognize that it is also possible for fan(s) 1502 and/or 1503 to be configured to act as an exhaust, rather than an intake. In embodiments where LED strips are included, the flow of air through airways 1630 and 1631 may act to cool the LED strips 1504. Where two or more fans 1502 are included in an embodiment, it may be desirable, as already described above, to have them rotate in opposite directions relative to one another, e.g. one may spin clockwise while the other spins counterclockwise.

(60) Embodiments of the invention further include the functionality of irradiating germs out of the air using UV light. Such embodiments provide the advantage of not only circulating air in an environment, but also killing viral, bacterial, and fungal species which may be living in the environment's air. It is known the UV light degrades organic materials, but inorganic materials (including metals or glass) are not affected by UV light. Therefore, UV light is effective for reducing organic matter which may be airborne in the air. Reducing airborne contaminants may be important in any environment, but especially in hospitals or schools, which may be particularly susceptible to disease. Regardless of the environment, disinfecting the air of contaminants is helpful to reduce the spread of disease.

(61) It is preferable to reduce or eliminate contact with UV lighting because UV light can be harmful to humans and/or animals (particularly over prolonged durations). Embodiments of the invention therefore provide the advantage of positioning a UV light source in the ceiling tile, where the UV rays may be contained in the ceiling tiles. For example, FIG. 16B illustrates exemplary UV light source(s) 1640 which are mounted inside the upper baffle 1610 and thus irradiate organic matter residing in air as air flows from the fan to the vent. A person of skill in the art would recognize that UV light sources include a power source and may optionally include an on/off controller (not shown). The UV light source may be activated by an on/off button, or it may be controlled by the remote control feature described further herein. In such an embodiment, a remote control may include the ability to activate or de-activate a UV light source.

(62) In some embodiments, light source(s) 1640 may emit UVC light, which has a wavelength of approximately 200 to 280 nanometers. A person of skill in the art would recognize the UVC light is optimal for irradiating airborne contaminants (such as viruses, superbugs, mold, and the like) in most environments. In embodiments of the invention, the upper baffle 1610 and/or the lower baffle 1620/1621 may be made of, or coated with, a UV-reflective material. A person of skill in the art would recognize that a UV-reflective material could include a metal, such as stainless steel, or a specialty coating. Lining the airway with a reflective material and/or reflective coating provides the advantage of creating a “kill chamber,” or “kill zone” inside the airways 1630, 1631, where UV rays may bounce to increase their exposure to air passing through the airways 1630, 1631, and by extension, increase the irradiation of organic matter contained in the air.

(63) Furthermore, some embodiments of the inventions may include a UV-screen in the form of flange 1650 which is attached to the end of airways 1630 and/or 1631 to shield UV rays from exiting the airways and entering an environment (such as a room or commercial space). In this way, including UV-screen(s) 1650 at the end of an airway Although FIG. 16B illustrates a UV source in an embodiment which is built into a ceiling tile, it should be understood that the disclosed UV source and “kill chamber” may be implemented in any of the embodiments disclosed herein.

(64) FIG. 17 shows an exploded view of components of the invention. For example, the embodiment of FIG. 17 shows a ceiling tile 1501 in which there are cut-outs for fans 1502 and vents 1503. Upper baffle 1610 is shown, sized to fit onto ceiling tile 1501. Furthermore, FIG. 17 shows exemplary LED strips 1504 (including power cord) which may be mounted on the ceiling tile 1501's underside.

(65) Various aspects of this disclosure may include components which are implemented directly into the ceiling grid, or ceiling tile 1801, as seen for example in FIG. 18. It is contemplated that an exemplary ceiling tile 1801 may be sized as 1′×4′; 2′×2′ or 2′×4′, although a person skilled in the art would understand that any appropriately sized ceiling tile may be used in accordance with the present inventions. Moreover, ceiling tile 1801 could be acoustical, fiber, wood, metal, translucent, plastic, sheet rock, or drywall structures as are known to be used in industrial, commercial, or residential environments. Alternatively, the ceiling grid 1801 may take the form of a light fixture that fits within the ceiling tile grid.

(66) In embodiments of the inventions, ceiling tile 1801 may have one or more fans 1802 and vents 1803 cut into the ceiling tile 1801, or positioned in the ceiling grid, sometimes referred to herein as a ceiling panel. Panel cuts may be made or manufactured using waterjet cutting, die cutting, laser cutting, CNC routing, CNC knife cutting, reciprocated knife cutting, or any other known techniques for cutting through tiles. Vents 1803 may take the form of elongated slot(s) extending along the edge of ceiling tile 1801, although other shapes are also contemplated. For example, FIG. 18 shows an elongated slot 1803 that runs along the entire length of the tile 1801. A person of skill in the art would understand that additional arrangements are contemplated. Optional LED strips (not shown) may be included, and may extend between the one or more fans 1802 and vents 1803.

(67) As seen in FIG. 20A, which is a cut-away side view of embodiments of the inventions, upper baffles 2010, 2011 and one or more lower baffles 2020, 2021, may act together to define one or more airway(s). For example, air may pass from a fan 2002, along airway(s) 2030, 2031 (e.g. a first airway to the left and a second airway to the right), to vents 2003. Upper baffles 2010, 2011 may form air deflection mechanism 2015 which is formed in close proximity to fan 2002. Alternatively, the deflection mechanism 2015 may consist of a separate structure. Embodiments in which an air diversion mechanism 2015 extends into proximity with fan 2002 provides the advantage of improved airflow: that is because the air diversion mechanism 2015 forces air to split evenly towards the air chambers 2030 and 2031. In the absence of air diversion mechanism 2015, the direction of rotation of fan 2002 may lead to uneven air distribution. The air diversion mechanism 2015 performs a similar function to air diversion mechanism 50 described above. Indeed, a person of skill in the art would recognize that the air diversion mechanism 50 (See e.g. FIG. 1) may be included in the embodiment of FIGS. 20A and 20B. Also included within the air flow airways 2030 and 2031 are a series of baffles 2040, 2042 and 2044. The baffles operate to direct the air flowing through the airways 2030 and directs the air through an outlet vent 2003. The baffles 2040, 2042 and 2044 form what is called the kill zone. There may be included in the embodiment shown in FIG. 20A are UV light systems 2060. The UV lights 2060 operate to irradiate fungi, bacteria and viruses form the air circulating through the system 2001. The UV lights operate within a wavelength of approximately 200 to 280 nanometers. The bulbs used in the UV light are typically referred to the UV-C light spectrum. The UV-C bulbs operate along the specific wave length of ultra-violet lights or light diffusing optical fibers. The UV-C light sources are typically referred to as T-5, T-8 or similarly type of LED lighting fixtures. The embodiment in FIGS. 20A and 20B may include an indicator light (not shown) to indicate when the UV-C light source is operating within the chambers 2030 and 2031. While the UV-C light source is shown in FIGS. 20A and 20B the LED light 20 depicted in FIGS. 1-7, 13 and 14 above could be replaced with the UV-C light source.

(68) The UV-C lights 2060, emitting light along a wavelength of 200 to 280 nanometers, have been deemed to have potentially harmful effects on humans. The baffles 2040, 2042 and 2044 operate to maintain the light emitted by the UV-C light fixture 2060 within the fixture so that little, if any, UV-C light is emitted from the fixture through the fans 2002 or the vent 2003. The baffles 2040, 2042 and 2044 may be positioned on the opposite side of the airway 2031. Preferably, fan(s) 2002 take in air, which is released out through vents 2003. In such an arrangement, fan(s) 2002 act as an air intake and vents 2003 act as an exhaust. A person of skill in the art would recognize that it is also possible for fan(s) 2002 and/or 2003 to be configured to act as an exhaust, rather than an intake. In embodiments where UV-C lighting is included, the flow of air through airways 2030 and 2031 may act to irradiate the air to eliminate germs, viruses, bacteria, fungi or the like. Where two or more fans 2002 are included in an embodiment, it may be desirable, as already described above, to have them rotate in opposite directions relative to one another, e.g. one may spin clockwise while the other spins counterclockwise.

(69) In the embodiment shown in FIG. 20B, the light source(s) 2060 may emit UVC light, which has a wavelength of approximately 200 to 280 nanometers. A person of skill in the art would recognize the UVC light is optimal for irradiating airborne contaminants (such as viruses, superbugs, mold, bacteria, fungus and the like) in most environments. In embodiments of the invention, the upper baffle 2010 and/or the lower baffle 2020 and 2021 may be made of, or coated with, a UV-reflective material. A person of skill in the art would recognize that a UV-reflective material could include a metal, such as stainless steel, or a specialty coating. Lining the airway with a reflective material and/or reflective coating provides the advantage of creating a “kill chamber,” or “kill zone” inside the airways 2030 and 2031, where UV rays may be deflected within the kill chamber to increase their exposure to air passing through the airways 2030 and 2031, and by extension, increase the irradiation of organic matter contained in the air. Furthermore, in the embodiment of FIGS. 20A and 20B, the baffles 2040, 2042 and 2044 located in airways 1630 and/or 1631 operate to (1) shield UV rays from exiting the airways and entering an environment (such as a room or commercial space) and (2) to increase the intensity the air is exposed to the UV-C light emitted by the UV-C light source 2060, and (3) increase the duration of air flowing through the airway 2030 and 2031 is exposed to the UV-C light. The baffles 2040, 2042 and 2044 operate to extend the time that the air flows along the kill zone thus increasing the number of germs that are killed within the fixture. An actual test of a unit utilizing the UV-C light source 1640 was conducted. The study was conducted to verify the unit's microbial reduction efficacy of aerosolized contaminants. The unit was mounted on the ceiling in a sealed 11′ 10″×11′ 10″×8′1″ (1125 cu.Math.ft) controlled environment room. The unit's fan and UV lamps were powered on and allowed to warm up over the course of 2-hours as part of conditioning. Aliquots of the microorganisms were added to a pre-sterilized nebulizer reservoir. The testing room was sealed; all equipment activation was performed remotely. The nebulizer was powered to aerosolize the microbial suspension. Following 5 minutes, the UV-C right source and fans were powered on. Samples of the air were collected immediately after unit activation using Bio-aerosol air impinger (Biosampler, SKC, Inc.). The air sample were collected over the course of three minutes. Air samples were collected again following 1 and 2-hours following start. The system was deactivated, and the room was exhausted for 25 minutes before entry for sample retrieval and subsequent analysis. The study was repeated as described with only the fans running and then again with the unit completely powered off. All collected samples were analyzed in triplicate at the minimum as per standard lab operating procedures. Analysis was conducted as per laboratory's accredited ISO17025: 2005 methodology: bacteria were analyzed as per SM 9215 (APHA 2012) and MS-2 as per EPA 1602. Analysis was conducted using calibrated and/or validated Instruments to traceable standards (NIST). All QC was within method acceptance limit. No general environmental conditions are specified in the standard or have been identified that could affect the test results or measurements.

(70) The test results demonstrated the following:

(71) The test resulted in a finding that 99.6% of K. pneumoniae was eliminated from the air after 1-hour of operation, and 99.998% of K. pneumoniae was eliminated from the air after 2-hours of operation. There was a 30% reduction of K. pneumoniae from the air after 1-hour of operation when the UV light source was not activated. The tests further found that 98.4% of the MSZ virus was eliminated from the air after 1-hour of operation and 99.6% of the MSZ virus was eliminated after 2-hours of operation. There was a 27.2% reduction of MSZ virus from the air after 1-hour of operation when the UV light source was not activated.

(72) While specific combinations of elements are disclosed in specific embodiments, it should be understood that any combination of the different features may be utilized in the combined fan.

(73) The foregoing disclosure and description of the invention are illustrating and explanatory thereof, and various changes in the size, shape and materials as well as in the details of illustrated construction may be changed without departing from the spirit of the invention.

(74) It is understood that the invention is not limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.