Ventilation system and method for killing airborne infectious bacteria, viruses and other pathogens

Abstract

A ventilation system is provided, the ventilation system comprising at least one air flow generating device, the at least one air flow generating device having a calibrated speed to produce a downward air flow capable of forcing a cloud of infectious bacterial, viral or pathogen particles or droplets out of an ingestion zone of a mouth, a nose and eyes of an individual, at least one ultraviolet C light lamp positioned proximate at least one wall of an area in a pathway of an infected air flow, the infected air flow containing the cloud of infectious bacterial, viral or pathogen particles or droplets, an ultraviolet C radiation field created by the at least one ultraviolet C light lamp, the ultraviolet C radiation field extending throughout the area from the at least one wall near a ceiling of the area and the infected air flow containing the cloud of infectious bacterial, viral or pathogen particles or droplets passing through the ultraviolet C radiation field, wherein the at least one air flow generating device is positioned to enable an upward air flow return to the at least one air flow generating device to force the infected air flow and the cloud of infectious bacterial, viral or pathogen particles or droplets out of an area and through the ultraviolet C radiation field to eradicate the infectious bacteria, virus and pathogens from the infected air flow, and wherein a fresh air flow free of infectious bacteria, viruses and pathogens is reintroduced back into the area by the downward air flow of the at least one air flow generating device.

Claims

1. A ventilation system comprising: at least one air flow generating device, said at least one air flow generating device having a calibrated speed to produce a downward air flow capable of forcing a cloud of infectious bacterial, viral or pathogen particles or droplets out of an ingestion zone of a mouth, a nose and eyes of an individual; at least one ultraviolet C light lamp positioned proximate at least one wall of an area in a pathway of an infected air flow, the infected air flow containing said cloud of infectious bacterial, viral or pathogen particles or droplets; an ultraviolet C radiation field created by said at least one ultraviolet C light lamp, said ultraviolet C radiation field extending throughout the area from said at least one wall near a ceiling of the area, and the infected air flow containing said cloud of infectious bacterial, viral or pathogen particles or droplets passing through said ultraviolet C radiation field; wherein said at least one air flow generating device is positioned to enable an upward air flow return to said at least one air flow generating device to force the infected air flow and said cloud of infectious bacterial, viral or pathogen particles or droplets out of the area and through said ultraviolet C radiation field to eradicate the infectious bacteria, virus and pathogens from the infected air flow; and wherein a fresh air flow free of infectious bacteria, viruses and pathogens is reintroduced back into the area by the downward air flow of said at least one air flow generating device.

2. The ventilation system as recited in claim 1, wherein said at least one air flow generating device is positioned proximate said ceiling.

3. The ventilation system as recited in claim 2, wherein said ventilation system includes a plurality of said air flow generating devices, said plurality of air flow generating devices positioned to enable the upward air flow return at said at least one wall.

4. The ventilation system as recited in claim 2, wherein said ventilation system includes a plurality of said air flow generating devices, said plurality of air flow generating devices positioned to enable the upward air flow return between adjacent said air flow generating devices and at said at least one wall.

5. The ventilation system as recited in claim 1, wherein said at least one air flow generating device is a ceiling fan to generate the downward air flow.

6. The ventilation system as recited in claim 1, wherein said at least one air flow generating device is a blower motor to generate the downward air flow.

7. The ventilation system as recited in claim 1, wherein said ventilation system includes a plurality of said ultraviolet C light lamps to increase the intensity of said ultraviolet C radiation field and enlarge said ultraviolet C radiation field.

8. The ventilation system as recited in claim 1, wherein said ventilation system includes at least one nozzle, said at least one nozzle positioned proximate said at least one air flow generating device and wherein the downward air flow produced by said at least one air flow generating device is directed through said at least one nozzle to create an air curtain, a size, a shape and the positioning of said at least one nozzle capable of being adjusted to regulate the velocity and direction of the downward air flow of said air curtain.

9. The ventilation system as recited in claim 8, wherein said ventilation system includes at least one duct, said at least one duct sized to include: said at least one air generating device; at least one intake grate; at least one exhaust grate; and wherein said at least one air generating device is calibrated to draw a portion of the infected air flow into said at least one duct at said at least one intake grate and force the fresh air flow within said at least one duct out of said at least one duct at said at least one exhaust intake grate to direct the fresh air flow within the area.

10. The ventilation system as recited in claim 9, wherein said duct further includes said at least one ultraviolet C light lamp, said at least one ultraviolet C light lamp positioned in said duct to create said ultraviolet C radiation field within said duct to eradicate the infectious bacteria, virus and pathogens from the infected air flow within said duct.

11. The ventilation system as recited in claim 1, wherein said ventilation system includes at least one duct, said at least one duct sized to include: said at least one air generating device; at least one intake grate; at least one exhaust grate; and wherein said at least one air generating device is calibrated to draw a portion of the infected air flow into said at least one duct at said at least one intake grate and force the fresh air flow within said at least one duct out of said at least one duct at said at least one exhaust intake grate to direct the fresh air flow within the area.

12. The ventilation system as recited in claim 11, wherein said at least one duct further includes said at least one ultraviolet C light lamp, said at least one ultraviolet C light lamp positioned in said at least one duct to create said ultraviolet C radiation field within said at least one duct to eradicate the infectious bacteria, virus and pathogens from the infected air flow within said at least one duct.

13. A method for operating a ventilation system to eliminate infectious bacteria, viruses and other pathogens from air of an area comprising the steps of: providing said ventilation system that includes: at least one air flow generating device, said at least one air flow generating device positioned proximate a ceiling of the area; at least one ultraviolet C light lamp, said at least one ultraviolet C light lamp positioned proximate at least one wall of the area in a pathway of an infected air flow returning to said at least one air flow generating device, the infected air flow containing a cloud of infectious bacterial, viral or pathogen particles or droplets; and an ultraviolet C radiation field created by said at least one ultraviolet C light lamp said ultraviolet C radiation field extending throughout the area from said at least one wall near said ceiling of the area; rotating said at least one air flow generating device at a calibrated speed to produce a downward air flow within the area; generating the downward air flow at the calibrated speed to drive said cloud of infectious bacterial, viral or pathogen particles or droplets out of an ingestion zone of the mouth, nose and eyes of an individual; generating an upward air flow to return the infected air flow to said ceiling to force said cloud of infectious bacterial, viral or pathogen particles or droplets out of the area and through said ultraviolet C radiation field to eradicate the bacteria, virus and pathogens from the infected air flow; reintroducing a fresh air flow free of infectious bacteria, viruses and pathogens back into the area through said at least one air flow generating device.

14. The method for the operation of a ventilation system as recited in claim 13, wherein said at least one air flow generating device is a ceiling fan to generate the downward air flow.

15. The method for the operation of a ventilation system as recited in claim 14, wherein said ventilation system includes: a plurality of said air flow generating devices; and positioning said plurality of air flow generating devices to enable the upward air flow return at said at least one wall.

16. The method for the operation of a ventilation system as recited in claim 14, wherein said ventilation system includes: a plurality of said air flow generating devices; and positioning said plurality of air flow generating devices to enable the upward air flow return between adjacent said air flow generating devices and at said at least one wall.

17. The method for the operation of a ventilation system as recited in claim 13, wherein said at least one air flow generating device is a blower motor to generate the downward air flow.

18. The method for the operation of a ventilation system as recited in claim 13, wherein said ventilation system includes a plurality of said ultraviolet C light lamps to increase the intensity of said ultraviolet C radiation field and enlarge said ultraviolet C radiation field.

19. The method for the operation of a ventilation system as recited in claim 13, wherein said ventilation system includes; at least one nozzle; positioning said at least one nozzle proximate said at least one air flow generating device; directing the downward air flow produced by said at least one air flow generating device through said at least one nozzle to create an air curtain; and adjusting a size, a shape and the positioning of said at least one nozzle to regulate a velocity and direction of the downward air flow of said air curtain.

20. The method for the operation of a ventilation system as recited in claim 19, wherein said ventilation system includes at least one duct, said at least one duct sized to include: said at least one air generating device; at least one intake grate; at least one exhaust grate; and calibrating said at least one air generating device to draw a portion of the infected air flow into said at least one duct at said at least one intake grate; and forcing the fresh air flow within said at least one duct out of said at least one duct at said at least one exhaust intake grate to direct the fresh air flow within the area.

21. The method for the operation of a ventilation system as recited in claim 20, wherein said at least one duct includes; said at least one ultraviolet C light lamp, positioning said at least one ultraviolet C light lamp in said at least one duct to create said ultraviolet C radiation field within said at least one duct to eradicate the infectious bacteria, virus and pathogens from the infected air flow within said at least one duct.

22. The method for the operation of a ventilation system as recited in claim 13, wherein said ventilation system includes at least one duct, said at least one duct sized to include: said at least one air generating device; at least one intake grate; at least one exhaust grate; calibrating said at least one air generating device to draw a portion of the infected air flow into said at least one duct at said at least one intake grate; and forcing the fresh air flow within said at least one duct out of said at least one duct at said at least one exhaust intake grate to direct the fresh air flow within the area.

23. The method for the operation of a ventilation system as recited in claim 22, wherein said at least one duct includes; said at least one ultraviolet C light lamp, positioning said at least one ultraviolet C light lamp in said at least one duct to create said ultraviolet C radiation field within said at least one duct to eradicate the infectious bacteria, virus and pathogens from the infected air flow within said at least one duct.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) The features and inventive aspects of the present invention will become more apparent from the following detailed description, claims, and drawings, of which the following is a brief description:

(2) FIGS. 1A-1F are side views illustrating how a cloud of infectious viral particles may pass from an infected individual to expose subsequent individuals in a typical room under the operation of a typical heating, ventilation and air conditioning (HVAC) system with a horizontal air flow;

(3) FIG. 2 is side view of a ventilation system according to an embodiment of the present invention;

(4) FIG. 3 is a plan view of a ceiling illustrating the ventilation system according to the embodiment of the present invention;

(5) FIG. 4 is a plan view of the ceiling illustrating the ventilation system depicting a plurality of air flow generating devices and ultraviolet light sources in a first indoor facility according to the embodiment of the present invention;

(6) FIG. 5 is a plan view of the ceiling illustrating the ventilation system depicting a plurality of air flow generating devices and ultraviolet light sources in a second indoor facility, larger than the first indoor facility, according to the embodiment of the present invention;

(7) FIG. 6 is side view of a ventilation system depicting the intersection of the downward airflow from a plurality of air flow generating devices and upward airflow at the walls according to the embodiment of the present invention;

(8) FIG. 7 is a plan view of a ceiling illustrating the ventilation system depicting the intersection of the downward airflow from a plurality of air flow generating devices according to the embodiment of the present invention;

(9) FIG. 8 is side view of the ventilation system depicting downward airflow from a plurality of air flow generating devices and upward airflow in between a plurality of air flow generating devices according to the embodiment of the present invention;

(10) FIG. 9 is a plan view of a ceiling illustrating the ventilation system depicting downward airflow from a plurality of air flow generating devices and upward airflow in between a plurality of air flow generating devices according to the embodiment of the present invention;

(11) FIG. 10 is a side view of a ventilation system depicting air flow generating devices positioned within a duct to drive downward air flow through a plurality of nozzles to create a plurality of air curtains and upward air flow at the walls according to another embodiment of the present invention;

(12) FIG. 11 is a side view of a ventilation system depicting air flow generating devices positioned within a duct at each nozzle to drive downward air flow through nozzles to create a plurality of air curtains and upward air flow at the walls according to another embodiment of the present invention;

(13) FIGS. 12A and 12B are plan views of the ceiling illustrating the ventilation system depicting a plurality of ducts, different sized and shaped nozzles and ultraviolet light sources in an indoor facility according to the embodiment of the present invention;

(14) FIG. 13 is a side view of a ventilation system including a duct housing a air flow generating device, an intake vent and an exhaust vent according to yet another embodiment of the present invention;

(15) FIGS. 14A-14B are side views of a ventilation system including a plurality of duct housings, each including an air flow generating device, an intake vent, an exhaust vent and a plurality of ultraviolet light sources according to still another embodiment of the present invention;

(16) FIG. 14C is a side view of a ventilation system including a duct housing, the duct housing including a plurality of air flow generating devices, intake vents, exhaust vents and ultraviolet light sources according to still another embodiment of the present invention;

(17) FIG. 15 is a side view of a ventilation system including a plurality of duct housings each including an air flow generating device, an intake vent and an exhaust vent according to yet another embodiment of the present invention;

(18) FIG. 16 is a side view of a ventilation system including a plurality of duct housings, each including an air flow generating device, an intake vent, an exhaust vent and a plurality of ultraviolet light sources according to still another embodiment of the present invention;

(19) FIGS. 17A-17E are side views illustrating how a cloud of infectious viral particles may be expelled from an infected individual and driven out of the ingestion zone of the mouth, nose and eyes of a second individual proximate the infected individual by the ventilation system according to an embodiment of the present invention;

(20) FIGS. 18A-18D are side views illustrating how a cloud of infectious viral particles may be expelled from an infected individual and driven out of the ingestion zone of the mouth, nose and eyes of a second individual proximate the infected individual by the ventilation system according to an embodiment of the present invention;

(21) FIGS. 19A-19F are side views illustrating how a cloud of infectious viral particles may be expelled from an infected individual and driven out of the ingestion zone of the mouth, nose and eyes of individuals proximate the infected individual by the ventilation system according to another embodiment of the present invention; and

(22) FIGS. 20A-20F are front views of two individuals situated in a vehicle used to transport passengers illustrating a ceiling mounted ventilation system according to still another embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

(23) Referring now to the drawings, preferred illustrative embodiments of the present invention are shown in detail. Although the drawings represent embodiments of the present invention, the drawings are not necessarily to scale and certain features may be exaggerated to better illustrate and explain the present invention. Further, the embodiments set forth herein are not intended to be exhaustive or otherwise to limit or restrict the invention to the precise forms and configurations shown in the drawings and disclosed in the following detailed description.

(24) The wearing of masks, other face coverings and shields as well as the use of plexiglass barriers and social distancing all work to limit the transmission of infections and viruses such as influenza and SARS-CoV-2, however, these tools will not kill and eliminate the infectious particles and pathogens. The present invention provides a ventilation system 10 that will force a cloud 12 of infectious viral material and pathogens, such as a cloud of infectious influenza or water droplets of SARS-CoV-2 particles, out of the ingestion zone of the mouth, nose or eye area of an individual (see FIGS. 17A-17E; 18A-18D and 19A-19F). Ventilation system 10 will force existing room air and cloud 12 downward to a floor 14 of a building and to walls 16 or intake zone (see intake zone at B on FIGS. 8 and 9). At walls 16 and intake zone B, ventilation system 12 will intake the room air and cloud 12 and force the room air and cloud 12 up walls 16 and intake zone B to a ceiling 18. During the intake process, room air and cloud 10 will pass through means to disinfect the air, thereby killing and eliminating cloud 12 of infectious viral material prior to the release of fresh air, free of any infectious viral material, back into the room.

(25) According to an embodiment of the present invention, ventilation system 10 includes a plurality of air flow generating devices 20 positioned at or near ceiling 18 of an enclosed room or area of a facility or building as illustrated in FIGS. 2-9. It is important to note, however, the ventilation system 10 may also be used in an outdoor venue the may have a roof and ceiling to support ventilation system 10, such as a covered outdoor bar or restaurant, a pavilion, a baseball stadium dugout (may be an indoor or outdoor stadium) and the like. Air flow generating devices 20 may be positioned at or near ceiling 18 such that the air flow being produced by air flow generating devices 20 will be directed downward in a generally vertical direction to floor 14. Air flow generating devices 20 may include but are not limited to ceiling fans, fans within ducts, blowers and the like. Air flow generating devices 20 will impart a downward air velocity of 5 to 100 inches per second depending on the rotational speed of air flow generating devices 20. At this velocity of 5 to 100 inches per second, the air flow from air flow generating devices 20 will force cloud 12 downward to the floor before cloud 12 of infectious viral material has a chance to enter the ingestion zone of the mouth, nose and eyes of the individual.

(26) Although an individual may have been exposed to cloud 12 of infectious viral particles, they still not may be infected with influenza or COVID-19. Along with exposure, an individual must also be exposed to the cloud of infectious viral material for a period of time prior to infection becoming present in the individual. Infection is equal to exposure to the infectious viral particles plus a period of exposure time. The amount of exposure time may depend on a number of factors as to whether a person will become infected with influenza, COVID-19 or a myriad of other infections of viruses. Those factors may include the number of infectious viral particles present in the cloud, the distance from the source of the cloud of infectious viral particles, the susceptibility to the infection of the individual and the amount of time the individual spends intaking the infectious viral particles. The present invention will limit the amount of time a particular individual is in contact with the cloud of infectious viral particles. Even if an individual comes into contact with a cloud of infectious viral material, the vertical air flow provided by air flow generating devices 20 will quickly force cloud 12 out of the ingestion zone of the mouth, nose and eyes of the individual, thereby limiting the exposure time to cloud 12 of infectious viral particles.

(27) The Environmental Protection Agency (EPA) recommends a rate of 0.35 air changes per hour (ACH) (about one-third of the air in a typical home being replaced every hour or three hours for a full air change) for health indoor air quality. The average home does have a much higher rate of natural air infiltration than this. A ceiling fan, such as air flow generating device 20, produces an air exchange rate of approximately one air exchange every twenty seconds for air moving at a velocity of 30 inches per second traveling a total distance of 50 feet in a room size of 30 feet by 30 feet by 10 feet. A ceiling fan produces approximately 540 air exchanges for every one air exchange created by a typical heating, ventilation and air conditioning (HVAC) system.

(28) Ventilation system 10 will also include a plurality of ultraviolet C light lamps 22 as the means to disinfect the air by killing and eliminating the infectious viral particles from the air in the room. Ultraviolet C light is most generally referred to as germicidal ultraviolet light capable of killing bacteria, viruses, germs mold and fungus. Ultraviolet C light is a form of electromagnetic radiation with a wavelength from 100 nanometers to 280 nanometers and is invisible to most humans. Ultraviolet C light targets DNA and RNA, the genetic material that makes up all living organisms, controlling growth, development, function and reproduction, of microbes. The electromagnetic radiation produced by ultraviolet C light can destroy the ability of microorganisms to reproduce by causing photo-chemical reactions in nucleic acids. Ultraviolet C light triggers the formation of specific thymine and cytosine dimmers in DNA and uracil dimmers in RNA, which cause inactivation of microbes by causing mutations and/or cell death and failure to reproduce. Products using ultraviolet C light lamps tout pathogen kill rates higher than a 99.9% rate. Ultraviolet C light helps stop the spread of numerous pathogens including, influenza 1, 2, 3, 4, 5, 7 and 9, the cold, the superbug, SARS-CoV-2 and others such as ADENO virus type III, bacteriophage 1, 3, 4, 5, 6 and 9, coxsackie and infectious hepatitis 1, 5, 7 and 8. For a ceiling fan producing approximately 540 air exchanges for every one air exchange created by a typical HVAC system, any pathogens in the air in the room will pass through ultraviolet C light radiation about 540 times meaning there is an extremely high probability the pathogens are dead by the time they are removed by the HVAC system. Further, the chance of spreading live pathogens from one room to another may be eliminated.

(29) Ultraviolet C lamps 22 may be positioned at or near ceiling 18 as depicted in FIGS. 2-7. Radiation provided by ultraviolet lamps has the ability to kill any kind of bacteria or virus. The SARS-CoV-2 particles are approximately 0.1 microns in size making it highly susceptible to radiation provided by ultraviolet C lamp lighting. A considerable dose of ultraviolet C radiation is required to kill the SARS-CoV-2 virus as well as other bacteria and viruses. The principle of ultraviolet C light sterilization is related to the intensity of the ultraviolet C lamp used. The more powerful the ultraviolet C lamp, the more likely the ultraviolet C radiation will kill and eliminate reproduction of the bacteria and virus. The longer the bacteria and virus is exposed to the ultraviolet C lamp and, therefore, the radiation from the lamp, the better chance of killing the bacteria and virus. The germs that make up the bacteria and virus need time and distance to absorb the radiation from the ultraviolet C light. Longer ultraviolet C lamp and slower moving air next to the ultraviolet C lamps will accomplish this task. A typical ultraviolet C lamp may provide 110 microwatts of power. In a ventilation system flowing 2400 cubic feet per minute, the germ kill rate is approximately 70% to 80%.

(30) FIGS. 2 and 6 illustrate ultraviolet C lamps 22 positioned at or near ceiling 18. Lamps 22 are provided with an ultraviolet C light shield 26 to protect humans and animals from the harmful effects of ultraviolet C radiation. A plurality of lamps 22 create an ultraviolet C radiation field 24 that cloud 12 of infectious viral particles will pass through prior to being recirculated back through fans 20 and into the room.

(31) As stated above, a plurality of air flow generating devices 20 may be positioned on or at the ceiling such that a constant generally vertical air flow is directed downward to the floor. FIGS. 2-7 illustrate ventilation system 10 having a plurality of ceiling fans 20 that work to move all air flow in a particular room downward to the flow. The embodiment of the present invention illustrated in FIGS. 2-7 will be described with a ceiling fan as air flow generating device 20, but is important to note that any type of fan, blower or other type of air generating device may be used to produce the downward air flow. The positioning of ceiling fans 20 depicted in FIGS. 6 and 7 result in air flow generated by ceiling fans 20 being directed to floor 14 and outward to walls 16. The air flow from one fan will interact with the air flow from neighboring fans to move the air under the fans down to flow 14. The crossover points of air flow produced by each fan and its neighboring fan is shown as point A in the drawings. This arrangement of ceiling fans 20 may work well in a typical room such as an office or school room. Depending on the size of the room, ceiling fans 20 having different sized blades may be used for proper coverage to ensure all air flow from the fans covers the entire room but for near the walls where the return air flow to the ceiling will occur.

(32) Ceiling fans 20 will drive air flow and any infectious clouds 12 downward to floor 14 and out to walls 16. As the air flow reaches walls 16, the air flow will be outside of the general force of ceiling fans 20 driving the air flow downward. Air flow and any infectious clouds 12 at walls 16 will be drawn upward to ceiling 18 by the air flow pull from the backside of fans 20. As the air flow and any infectious clouds 12 reach ceiling 18, the air flow and clouds 12 will enter ultraviolet C field 24 produced by ultraviolet C light lamps 22. While the air flow and infectious clouds 12 are within field 24, the ultraviolet radiation will kill the bacteria, viruses and pathogens contained in infectious cloud 12 as fully described above. After passing through field 24, air flow will be free of any infectious clouds 12 and will be driven downward by fans 20 back toward floor 14 to repeat the process.

(33) The arrangement of air flow generating devices 20 depicted in FIGS. 8 and 9 may be configured for use in a larger indoor area say, for instance, in a manufacturing setting, indoor stadium, church building and the like according to another embodiment of the present invention. In this particular embodiment of the present invention illustrated in FIGS. 8-9 will be described with a ceiling fan as air flow generating device 20, but is important to note that any type of fan, blower or other type of air flow generating device may be used to produce the downward air flow. The floor of a manufacturing plant may be quite extensive and may not be economical to position ceiling fans to create enough air floor to force all air to the floor and out to the outer walls of the facility prior to returning to the ceiling. In this instance, ceiling fans 20 may be positioned relative to neighboring ceiling fans such that a strategic up-draft or intake zone is created at B. Ceiling fans 20 create a downward air flow as described above to move infectious cloud 12 out of the ingestion zone of the mouth, nose or eyes of an individual. Up-draft or intake zone B allows the air to be returned from floor 14 to ceiling 18 without having to travel to walls 16, which may be several feet from the fan. Including intake zone B enables cloud 12 to be moved upward to ceiling 18 and radiation zone 24. If intake zone B were not used, cloud 12 may linger at floor 14 or worse, find its way into the ingestion zone of the mouth, nose or eyes of an unsuspecting individual prior to entering the up-drafts at walls 16. Further, if the infected individual is in the downward air path of the fan and the second individual is in the upward air path of zone B, infectious cloud 12 may be carried upward by the up-draft in zone B prior to every reaching floor 14.

(34) As the air flow and any infectious clouds 12 reach ceiling 18 either at walls 16 or intake zones B, the air flow and clouds 12 will enter ultraviolet C field 24 produced by ultraviolet C light lamps 22. While the air flow and infectious clouds 12 are within field 24, the ultraviolet radiation will kill the bacteria, viruses and pathogens contained in infectious cloud 12 as fully described above. After passing through field 24, air flow will be free of any infectious clouds 12 and will be driven downward by ceiling fans 20 back toward floor 14 to repeat the process.

(35) FIGS. 8 and 9 also depict an alternative arrangement of ultraviolet C light lamps 22 according to another embodiment of the present invention. Because the plant floor of a manufacturing facility may be quite large and the ceiling well above the floor, it may be advantageous to position ultraviolet C light lamps 22 near ceiling fans 20 as shown in the drawing figures. An ultraviolet C radiation field 24 may extend across the ceiling area, but the lamps will be closest to the air returns at each of ceiling fans 20. This will help to ensure the most intense radiation for killing the viral particles of cloud 12 is closest to said particles. Shields 26 may still be added under the lamps to prevent harmful radiation from reaching humans and animals within the facility.

(36) FIGS. 10-12B depict ventilation system 10 according to yet another embodiment of the present invention. In this particular embodiment, ventilation system 10 may be used in situations where individuals are working in close proximity to one another. Ventilation system 10 includes a plurality of nozzles 30 for precisely directing downward air flow to a specific area of a room. The downward air flow exiting nozzles 30 may be much higher than the downward air flow produced by a typical ceiling fan and can range in velocity from 40-200 inches/second to create an air curtain 32. The air flow will be produced by air flow generating devices 20 that may be positioned in duct 28. The smaller openings of nozzles 30 increases the downward air flow produced by air flow generating devices 20 due to the smaller opening the air travels through to create air curtain 32. In this particular embodiment of the present invention illustrated in FIGS. 10-12B may be described with a fan depicted in a duct as air flow generating device 20, but is important to note that any type of fan, blower or other type of air generating device may be used to produce the downward air flow. Fan may be also be a high-speed fan to generate sufficient air flow velocity to create air curtain 32.

(37) As described above, air flow exiting nozzles 30 to create air curtain 32 result in a downward air flow generated by fans 20 being directed to floor 14 through nozzles 30 and outward to walls 16. This arrangement of fans 20 and nozzles 30 to create air curtains 32 may work well in a manufacturing or office scenario where social distancing norms cannot be maintained while work is ongoing. For example, workers in meat processing plants are in close proximity to one another, certainly less than social distancing norms, for communication purposes. A barrier, such as plexiglass, positioned between workers would hinder communication and would lower productivity. Air curtain 32 positioned between workers would allow for communication and the speed of the downward air flow would force any infectious cloud 12 directly to floor 14 prior to entering into the ingestion zone of the mouth, nose or eyes of any workers proximate the worker that produced infectious cloud 12.

(38) Fans 20 and nozzles 30 will drive air flow and any infectious clouds 12 downward to floor 14 and out to walls 16. As the air flow reaches walls 16, the air flow will be outside of the general force of fans 20 and nozzles 30 driving the air flow downward. Air flow and any infectious clouds 12 at walls 16 will be drawn upward to ceiling 18 by the air flow pull from the backside of fans 20. As the air flow and any infectious clouds 12 reach ceiling 18, the air flow and clouds 12 will enter ultraviolet C field 24 produced by ultraviolet C light lamps 22. While the air flow and infectious clouds 12 are within field 24, the ultraviolet radiation will kill the bacteria, viruses and pathogens contained in infectious cloud 12 as fully described above. After passing through field 24, air flow will be free of any infectious clouds 12 and will enter duct 28 be driven downward back toward floor 14 by fans 20 and nozzles 30 to repeat the process. FIGS. 10 and 11 depict the positioning of ultraviolet C light lamps 22 outside of duct 28. However, it is important to note that ultraviolet C light lamps 22 may be positioned within duct 28 (see for example FIGS. 14A-C and 16) to kill any bacteria, viruses or pathogens contained in any infectious cloud 12.

(39) FIG. 12B depicts several arrangements of duct 28 and nozzles 30 from a floor view looking upward to ceiling 18. The upper configuration depicts a plurality of elongated nozzles 30 extending from a single duct 30. Air flow from these particular nozzles 30 will create a type of air curtain 32 that may resemble a blade and cover a substantial surface area. The middle configuration depicts a plurality of generally circular nozzles 30 extending from a single duct 28 for a more directed and faster downward air flow. The lower configuration depicts a plurality of generally circular nozzles 30 extending from a plurality of ducts 28. This configuration may provide for even a more directed air flow and an even faster downward air flow. This configuration will allow for further flexibility in controlling air flow by allow an entire duct 28 to be turned off. Further, nozzles 30 may be closed off to even further provide flexibility in directing air flow into areas were needed. For example, work may not be ongoing in a specific area and my not warrant the use of nozzles 30 to direct air flow at a particular time. It is also important to note that the size of nozzles 30 may be adjusted to regulate the velocity of the air flow of air curtains 32 exiting nozzles 30. Further, the positioning of nozzles 30 may be adjusted to enable nozzles 30 to produce air curtains 32 in a specific direction at a targeted location.

(40) FIG. 13 illustrates still another embodiment of the present invention. Ventilation system 10 may include duct 38 that extend the length and height of wall 16. Duct 38 and wall 16 may include an air intake grate 34 such as a register and an air exhaust grate 36 such as a register. Duct 38 may extend from ceiling 18 to floor 14 with air intake grate 34 positioned proximate ceiling 18 to allow irradiated air flow from ultraviolet C field 24 to enter duct 38. Air flow will be pulled into duct 38 by fan 20 and air flow will travel downward through duct 38 to exhaust grate 36 and enter the room. As described above, ceiling fans 20 working within the room will be forcing air flow along with any infectious clouds downward to floor 14. Air flow exiting exhaust grate 36 will force the air and any infectious clouds 12 at floor 14 across the room to the opposite wall 16′.

(41) As the air flow reaches the opposite wall 16′, the air flow will be outside of the general force of ceiling fans 20 driving the air flow downward. Air flow and any infectious clouds 12 at opposite wall 16′ will be drawn upward to ceiling 18 by the air flow pull from the backside of ceiling fans 20. As the air flow and any infectious clouds 12 reach ceiling 18, the air flow and clouds 12 will enter ultraviolet C field 24 produced by ultraviolet C light lamps 22. While the air flow and infectious clouds 12 are within field 24, the ultraviolet radiation will kill the bacteria, viruses and pathogens contained in infectious cloud 12 as fully described above. After passing through field 24, air flow will be free of any infectious clouds 12 and will be driven downward by ceiling fans 20 back toward floor 14 and pulled into duct 38 by fan 20 at ceiling 18 to repeat the process.

(42) FIGS. 14A-14C illustrate yet another embodiment of the present invention. In this particular embodiment of the present invention, ventilation system 10 includes ducts 38 that may be added at walls 16 and extend the length and height of wall 16. Ducts 38 include intake grate 34, exhaust grate 36 and fan 20. Ducts also include a plurality of ultraviolet C light lamps 22 to create an ultraviolet C filed 24 within ducts 38. Ducts 38 may extend from ceiling 18 to floor 14 with intake grate 34 proximate ceiling 18 and exhaust grate proximate floor 14. As described above, ceiling fans 20 working within the room will be forcing air flow along with any infectious clouds downward to floor 14. Rather than the air flow and any infectious clouds 12 returning to ceiling 18 along walls 16, fans 20 within ducts 38 will pull air and clouds 12 at the floor level into duct 38 through intake grate 34. Air flow and infectious clouds 12 will travel up ducts 38 to ceiling 18 and exit ducts at exhaust grate 36.

(43) As the air flow and any infectious clouds 12 enter duct 38 through intake grate 34, the air flow and clouds 12 will enter ultraviolet C field 24 produced by ultraviolet C light lamps 22. While the air flow and infectious clouds 12 are within field 24, the ultraviolet radiation will kill the bacteria, viruses and pathogens contained in infectious cloud 12 as fully described above. After passing through field 24, air flow will be free of any infectious clouds 12 and will be introduced back into the room at ceiling 18 through exhaust grate 36 to be driven downward by ceiling fans 20 back toward floor 14 and into duct 38 through intake grate 34 to repeat the process.

(44) FIG. 14B illustrates a number of ducts 38 each including fan 20, intake grate 34, exhaust grate 36 and ultraviolet C light lamps 22 configurations spaced throughout a room. This will allow for individual ducts 38 to be shut down if required for service or they may not be needed for air flow in a particular area of the room. FIG. 14C illustrates a single duct 38 including a plurality of fans 20, intake grates 34, exhaust grates 36 and ultraviolet C light lamps 22 configuration for wall 16 of a room. Duct 38 configured in this manner may provide a more economical means to deploy ventilation system 10 while still maintaining and irradiating infectious cloud 12 air flow.

(45) FIG. 15 illustrates still another embodiment of the present invention. Ventilation system 10 may include duct 38 that extend the length and height of wall 16 as described above. Duct 38 and wall 16 may include an air intake grate 34 such as a register and an air exhaust grate 36 such as a register. Duct 38 may extend from ceiling 18 to floor 14 with air intake grate 34 positioned proximate ceiling 18 to allow irradiated air flow from ultraviolet C field 24 to enter duct 38. Air flow will be pulled into duct 38 by fan 20 and air flow will travel downward through duct 38 to exhaust grate 36 and enter the room. As described above, fans 20 and nozzles 30 create air curtains 32 working within the room will force air flow, along with any infectious clouds 12, downward to floor 14. Air flow exiting exhaust grate 36 will force the air and any infectious clouds 12 at floor 14 across the room to the opposite wall 16′.

(46) As the air flow reaches the opposite wall 16′, the air flow will be outside of the general force of nozzles 30 and air curtains 32 driving the air flow downward. Air flow and any infectious clouds 12 at opposite wall 16′ will be drawn upward to ceiling 18 by the air flow pull from the backside of fans 20. As the air flow and any infectious clouds 12 reach ceiling 18, the air flow and clouds 12 will enter ultraviolet C field 24 produced by ultraviolet C light lamps 22. While the air flow and infectious clouds 12 are within field 24, the ultraviolet radiation will kill the bacteria, viruses and pathogens contained in infectious cloud 12 as fully described above. After passing through field 24, air flow will be free of any infectious clouds 12 and will be driven downward by fans 20, nozzles 30 and air curtain 32 back toward floor 14 and into duct 38 through intake grate 34 to repeat the process.

(47) FIG. 16 illustrates still another embodiment of the present invention. In this particular embodiment of the present invention, ventilation system 10 includes ducts 38 that may be added at walls 16 and extend the length and height of wall 16. Ducts 38 include intake grate 34, exhaust grate 36 and fan 20. Ducts also include a plurality of ultraviolet C light lamps 22 to create an ultraviolet C filed 24 within ducts 38. Ducts 38 may extend from ceiling 18 to floor 14 with intake grate 34 proximate ceiling 18 and exhaust grate proximate floor 14. As described above, fans 20, nozzles 30 and air curtain 32 working within the room will be forcing air flow along with any infectious clouds downward to floor 14. Rather than the air flow and any infectious clouds 12 returning to ceiling 18 along walls 16, fans 20 within ducts 38 will pull air and clouds 12 at the floor level into duct 38 through intake grate 34. Air flow and infectious clouds 12 will travel up ducts 38 to ceiling 18 and exit ducts at exhaust grate 36.

(48) As the air flow and any infectious clouds 12 enter duct 38 through intake grate 34, the air flow and clouds 12 will enter ultraviolet C field 24 produced by ultraviolet C light lamps 22. While the air flow and infectious clouds 12 are within field 24, the ultraviolet radiation will kill the bacteria, viruses and pathogens contained in infectious cloud 12 as fully described above. After passing through field 24, air flow will be free of any infectious clouds 12 and will be introduced back into the room at ceiling 18 through exhaust grate 36 and drawn into duct 28 at intake grate 34 to be driven downward by fans 20, nozzles 30 and air curtain 32 back toward floor 14 and into duct 38 through intake grate 34 to repeat the process.

(49) FIGS. 17A-17E illustrate how cloud 12 of infectious viral particles or droplets produced by an individual with a cough will travel from an infected individual throughout the room under ventilation system 10. FIG. 17A shows cloud 12 0.3 seconds after the cough has been initiated. FIG. 17B illustrates how cloud 12 of infectious viral particles or droplets has traveled in the room utilizing ventilation system 10. Two seconds after the cough was initiated, cloud 12 has been forced to the right by the HVAC system and downward by ceiling fans 20 out of the ingestion zone of the mouth, nose and eyes of the individual closest to the infected individual. FIG. 17C illustrates how cloud 12 of infectious viral particles or droplets has traveled five seconds after the cough was initiated. Cloud 12 has been forced further to the right by the HVAC system and further downward by ceiling fans 20 out of the ingestion zone of the mouth, nose and eyes of the individual closest to the infected individual. FIG. 17D illustrates how cloud 12 of infectious viral particles or droplets has traveled ten seconds after the cough was initiated. Cloud 12 has been forced still further to the right by the HVAC system and still further downward by ceiling fans 20 to the floor level. FIG. 17D illustrates how cloud 12 of infectious viral particles or droplets has traveled twenty seconds after the cough was initiated. Cloud 12 has been forced still further to the right by the HVAC system and cloud 12 has now started to ascend up wall 16 to ceiling 18 and ultraviolet C field 24 for eradication of the infectious material while still remaining out of out of the ingestion zone of the mouth, nose and eyes of the individuals closest to the infected individual.

(50) FIGS. 18A-18D illustrate how cloud 12 of infectious viral particles or droplets produced by an individual with a cough will travel from an infected individual throughout the room under another embodiment the present invention, ventilation system 10. FIG. 18A shows cloud 12 0.3 seconds after the cough has been initiated. FIG. 18B illustrates how cloud 12 of infectious viral particles or droplets has traveled in the room utilizing ventilation system 10. Two seconds after the cough was initiated, cloud 12 has been forced to the right by the HVAC system and upward by ceiling fans 20 out of the ingestion zone of the mouth, nose and eyes of the individual closest to the infected individual. FIG. 18C illustrates how cloud 12 of infectious viral particles or droplets has traveled five seconds after the cough was initiated. Cloud 12 has been forced further to the right by the HVAC system and further upward by ceiling fans 20 out of the ingestion zone of the mouth, nose and eyes of the individual closest to the infected individual. FIG. 18D illustrates how cloud 12 of infectious viral particles or droplets has traveled ten seconds after the cough was initiated. Cloud 12 has been forced still further to the right by the HVAC system and is approaching ceiling 18 and ultraviolet C field 24 for eradication of the infectious material while still remaining out of out of the ingestion zone of the mouth, nose and eyes of the individuals closest to the infected individual.

(51) FIGS. 19A-19F illustrate how cloud 12 of infectious viral particles or droplets produced by an individual with a cough will travel from an infected individual throughout the room under yet another embodiment of the present invention, ventilation system 10. FIG. 19A shows cloud 12 0.3 seconds after the cough has been initiated. FIG. 19B illustrates how cloud 12 of infectious viral particles or droplets has traveled in the room utilizing ventilation system 10. Four seconds after the cough was initiated, cloud 12 has been forced to the right by the HVAC system and downward by air curtain 32 out of the ingestion zone of the mouth, nose and eyes of the individual closest to the infected individual. FIG. 19C illustrates how cloud 12 of infectious viral particles or droplets has traveled eight seconds after the cough was initiated. Cloud 12 has been forced further to the right by the HVAC system and further downward by air curtain 32 out of the ingestion zone of the mouth, nose and eyes of the individual closest to the infected individual. FIG. 19D illustrates how cloud 12 of infectious viral particles or droplets has traveled twelve seconds after the cough was initiated. Cloud 12 has been forced still further to the right by the HVAC system and still further drastically downward by a second air curtain 32 approaching floor 14 level. FIG. 19E illustrates how cloud 12 of infectious viral particles or droplets has traveled sixteen seconds after the cough was initiated. Cloud 12 has been forced still further to the right by the HVAC system and still further downward by a second air curtain 32 approaching floor 14 level. FIG. 19F illustrates how cloud 12 of infectious viral particles or droplets has traveled twenty seconds after the cough was initiated. Cloud 12 has been forced still further to the right by the HVAC system and cloud 12 is now at floor 14 level as it approaches wall 16. As stated above an illustrated in FIGS. 17A-17E, cloud 12 will reach wall 16 and ascend up wall 16 to ceiling 18 and ultraviolet C field 24 for eradication of the infectious material while still remaining out of out of the ingestion zone of the mouth, nose and eyes of the individuals closest to the infected individual.

(52) FIGS. 17A-17E, 18A-18D and 19A-19F are all in stark contrast to FIGS. 1A-1F (where there is a potential to infect a number of individuals using a typical HVAC system). FIGS. 17A-17E, 18A-18D and 19A-19F all illustrate the use of ventilation system 10, in the various embodiments described above, to drive a cloud of infectious bacterial or viral material out of the ingestion zone of the mouth, nose and eyes of unsuspecting individuals and the means to eradicated the air flow in a room, building, manufacturing plant floor and the like of the cloud of infectious bacterial or viral material through the use of ultraviolet C radiation.

(53) It is also important to note that ventilation system 10 may use fans of varying sizes speeds and spacing while still accomplishing the main objective of driving cloud 12 of infectious bacterial or viral material out of the ingestion zone of the mouth, nose and eyes of unsuspecting individuals to avoid infection. Along with the use of ultraviolet C light lamps to kill and eradicate the bacterial microbes, viral microbes and any other pathogens, a disinfectant fog may be added to ventilation system 10 to further provide means to disinfect a large area and aid in the killing of any bacteria, viruses and any other pathogens. The disinfectant fog may be added to and disbursed by ventilation system 10 after working hours when the rooms, building and manufacturing plants are empty and free of workers to provide further means of disinfecting the workspaces. The wide distribution of air flow generating devices 20 of ventilation system 10 will help to ensure the disinfectant covers the entire workspace.

(54) In yet another embodiment of the present invention illustrated in FIGS. 20A-20F, ventilation system 10 may be adapted for use in vehicles used to transport people such as the passenger cars of trains, subway cars, buses, airplanes and other vehicles used for hire and moving a number of unrelated individuals in close proximity to one another. Air flow generating device 20 of ventilation system 10 is situated proximate ceiling 18 as described above. In this particular embodiment of the present invention, air flow generating device 20 may be an ultra-quiet fan or blower system designed for generating a high downward air flow with minimal noise so as to not disturb or inconvenience passengers during operation and travel. Ultraviolet C light lamps 22 are also situated proximate ceiling 18 and near air flow generating device 20. When activated, ultraviolet C light lamps 22 create ultraviolet C field 24 as described above in previous embodiments. Shield 26 may also be included with ventilation system 10 to protect individuals from ultraviolet C radiation.

(55) Passengers will be much closer to ventilation system 10 and much closer to one another then in the environments described above in other embodiments. Typical social distancing norms may not be maintained. The passenger environment may resemble the environment depicted in FIGS. 10 and 11, where individuals work in close proximity to one another. To accommodate the passengers in close proximity to one another, air flow generating device 20 may provide sufficient downward air flow to create an air curtain 44 to separate passengers. As described above, air flow generating device 20 will drive air flow and any infectious clouds downward toward the floor of the vehicle and out to walls 16 of the vehicle. If there is another set of seats across the aisle, for example in a plane, bus or train, air flow may be driven outward to an aisle 46. As the air flow reaches walls 16 and aisle 46, the air flow will be outside of the general force of air flow generating device 20 driving the air flow downward. Air flow and any infectious clouds 12 at walls 16 and aisle 46 will be drawn upward to ceiling 18 by the air flow pull from the backside of air flow generating device 20. As the air flow and any infectious clouds reach ceiling 18, the air flow and clouds will enter ultraviolet C field 24 produced by ultraviolet C light lamps 22. While the air flow and infectious clouds are within field 24, the ultraviolet radiation will kill the bacteria, viruses and pathogens contained in infectious cloud as fully described above. After passing through field 24, air flow will be free of any infectious clouds and will be driven downward back toward the floor by air flow generating device 20 to repeat the process. Ventilation system 10 may be of sufficient size so as to fit at the ceiling or overhead each seat or pair of seats to ensure adequate coverage with in the vehicle to remove and kill bacteria, viruses and pathogens from the air in passenger vehicles to help ensure passengers may be transported to their destinations with a reduced fear of contracting an infection.

(56) The present invention has been particularly shown and described with reference to the foregoing embodiments, which are merely illustrative of the best modes presently known for carrying out the invention. It should be understood by those skilled in the art that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention without departing from the spirit and scope of the invention as defined in the following claims. It is intended that the following claims define the scope of the invention and that the method within the scope of these claims and their equivalents be covered thereby. This description of the invention should be understood to include all novel and non-obvious combination of elements described herein, and claims may be presented in this or a later application to any novel non-obvious combination of these elements. Moreover, the foregoing embodiments are illustrative, and no single feature or element is essential to all possible combinations that may be claimed in this or a later application.