WO2021255759A1 - Appareil d'éclairage architectural modulaire pour nettoyer des polluants et des agents pathogènes aériens - Google Patents

Appareil d'éclairage architectural modulaire pour nettoyer des polluants et des agents pathogènes aériens Download PDF

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Publication number
WO2021255759A1
WO2021255759A1 PCT/IN2021/050587 IN2021050587W WO2021255759A1 WO 2021255759 A1 WO2021255759 A1 WO 2021255759A1 IN 2021050587 W IN2021050587 W IN 2021050587W WO 2021255759 A1 WO2021255759 A1 WO 2021255759A1
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WIPO (PCT)
Prior art keywords
air
lighting apparatus
disinfected
pathogens
containing pathogens
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PCT/IN2021/050587
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English (en)
Inventor
Abhay Mohan Wadhwa
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Abhay Mohan Wadhwa
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Publication of WO2021255759A1 publication Critical patent/WO2021255759A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/12—Lighting means

Definitions

  • This invention relates to a modular architectural lighting fixture for cleaning of air. More particularly, the fixture actively circulates the air by following a specific airflow pattern enabling a rapid and efficient cleaning of air within a predetermined area on a continual basis.
  • Epidemics and pandemics spare no country or regions. Humans are in the constant risk of being infected by deadly pathogens. So much so that it is affecting our day to day activities and we are forced to use various personal protection equipment to keep the pathogens at bay and stay healthy. The situation becomes even more dreadful when antidotes for infections caused by these pathogens not available. It is literally impossible avoid the spread of these pathogens if they are air borne.
  • a Modular Architectural light fixture comprises a double decker housing for producing light, inducing flow of air currents coupled with emitting light of required wavelengths and circulating the same along with air in the surrounding, wherein, said double decker housing is having an upper layer that induces and circulates the flow of air currents coupled with required wavelength, and a lower layer that produces light and illuminates the surrounding, wherein, the height of the double decker housing from the ground is sufficiently high such that humans never come in contact with the emitted wavelength.
  • a Modular Architectural light fixture comprising a double decker housing for producing light, inducing flow of air currents coupled with emitting light of required wavelengths and circulating the same along with air in the surrounding, wherein, said double decker housing is having an upper layer that induces and circulates the flow of air currents coupled with required wavelength, and a lower layer that produces light and illuminates the surrounding, wherein, the height of the double decker housing from the ground is sufficiently high such that humans never come in contact with the emitted wavelength and wherein the architectural fixture and light is preferably wall mounted or hanged from ceiling.
  • a Modular Architectural light fixture comprises a double decker housing for producing light, inducing flow of air currents coupled with emitting light of required wavelengths and circulating the same along with air in the surrounding, wherein, said double decker housing is having an upper layer that induces and circulates the flow of air currents coupled with required wavelength, and a lower layer that produces light and illuminates the surrounding, wherein, the height of the double decker housing from the ground is sufficiently high such that humans never come in contact with the emitted wavelength, wherein said architectural fixture and light is preferably wall mounted or hanged from ceiling, wherein the architectural fixture and light is powered from its in-built battery or electricity is being supplied from external wired connection or is provided replaceable battery system or their combination thereof.
  • a Modular Architectural light fixture comprises of a double decker housing for producing light, inducing flow of air currents coupled with emitting light of required wavelengths and circulating the same along with air in the surrounding, wherein, said double decker housing is having an upper layer that induces and circulates the flow of air currents coupled with required wavelength, wherein, upper layer further comprises of an ultraviolet (UV) light source capable of emitting light rays at a required wavelength which when coupled with the flow of air currents is having an ability to disinfect the surrounding air and upper layer comprises of a fan assembly for creating the flow of air currents by drawing in the air present from the surrounding and discharging out the same along with the required UV light wavelengths thus enabling disinfection of air surrounding and lower layer comprises of a light source capable of illuminating the surrounding, wherein, drawing in of air preferably takes places from the top surface of the upper layer and discharging of air is taking place laterally, horizontally and vertically.
  • UV ultraviolet
  • said flow of air currents is preferably an air microcurrent generated by the fan assembly through one or more louvers enabling the exchange of air to take place on micron level, thereby, the air containing pathogens in the air microcurrents coupled with the required UV wavelengths are disinfected till micron level.
  • a Modular Architectural light fixture comprises of a double decker housing for producing light, inducing flow of air currents coupled with emitting light of required wavelengths and circulating the same along with air in the surrounding, wherein, said double decker housing is having an upper layer that induces and circulates the flow of air currents coupled with required wavelength, wherein, upper layer further comprises of an ultraviolet (UV) light source capable of emitting light rays at a required wavelength which when coupled with the flow of air currents is having an ability to disinfect the surrounding air, and upper layer comprises of a fan assembly for creating the flow of air currents by drawing in the air present from the surrounding and discharging out the same along with the required UV light wavelengths thus enabling disinfection of air surrounding, wherein, fan assembly further comprises of pluralities of fans on the top surface and sideways of the upper layer, wherein, said fans are employed with one or more louvers on the front portion of the upper layer, thereby deviating the discharge of air along with the required UV light wavelength through the
  • UV ultraviolet
  • louvers are inclined at an angle that ensures the discharge of air along with UV light wavelength in a direction away from the reach of humans.
  • said double decker housing is provided with multiple electrical switches for regulating the operation of the upper and lower layer in terms of keeping the light source of lower layer on or off, maintaining the flow of air currents coupled with emitting required wavelengths from UV light source and detecting the presence of any human in the path of UV light rays.
  • the double decker housing is provided with pluralities of sensors for sensing the presence of any human in the path of UV light rays, if, at any time, during when the architectural fixture and light is operational, the presence of any human is detected by the sensors, one of the electrical switch called as “Kill Switch” is automatically disabled to cut-off the flow of air currents, emission of required wavelength from the UV light source and light source illuminating the surrounding.
  • the required wavelength emitted in the form UV light rays from the UV light source is in a range of 100 to 300 nm, which is capable of actively disinfecting the surrounding air with the help of operating currents.
  • a Modular Architectural light fixture comprises of double decker housing for producing light, inducing flow of air currents coupled with emitting light of required wavelengths and circulating the same along with air in the surrounding, wherein said flow of air currents is preferably an air microcurrent generated by a fan assembly through one or more louvers enabling the exchange of air to take place on micron level, thereby, the air containing pathogens in the air microcurrents coupled with the required UV wavelengths are disinfected till micron level, wherein, the double decker housing is provided with the fan assembly, one or more louvers and one or more UV light source for emitting required UV wavelengths.
  • This invention relates to a modular lighting apparatus for the disinfection of surrounding air. More particularly, the apparatus actively circulates the air by following a specific airflow pattern enabling rapid and efficient disinfection of air within a predetermined area continually.
  • Epidemics and pandemics spare no country or region. Humans are at constant risk of being infected by deadly pathogens. So much so that it is affecting our day-to-day activities and we are forced to use various personal protection equipment to keep the pathogens at bay and stay healthy. The situation becomes even more dreadful when antidotes for infections caused by these pathogens are not available. It is impossible to avoid the spread of these pathogens if they are airborne.
  • US6264888B1 discloses a germicidal method and apparatus for destroying airborne pathogenic bacteria such as tuberculosis bacteria using ultraviolet light.
  • Air is drawn through a filter and into a sterilization chamber that is irradiated with ultraviolet light, and out through an exhaust opening.
  • the filter is of the low-density type which traps large particulates, but not small particulates of the size of the microdroplets, so that the filter does not become a bacteria colonization site.
  • the sterilization chamber is constructed such that the air passes the ultraviolet light bulbs twice as it circulates therethrough.
  • US20170321877A1 discloses a wall or surface-mounted light fixture with a housing containing one or more external visible light sources to illuminate the space where the light fixture is mounted, one or more UV emitters inside the housing to destroy bacteria and pathogens, and one or more fans inside the housing that recirculate the air in a space and subject the air to the UV radiation inside the housing, destroying bacteria and pathogens in the air passing through the housing.
  • US5112370A discloses a device for sterilizing a forced air flow by means of ultraviolet radiations, comprising an elongated housing provided with reflecting inner surfaces accommodating at least an ultraviolet radiations source and a fan for sucking air into the device and sending it out after being subjected to the ultraviolet radiation in an air flow passage.
  • the device provides at each ends means for shielding and absorbing the ultraviolet radiation to prevent the dispersion thereof outside the device, made up by an optical labyrinth formed by parallel and spaced fins.
  • the device does not include a fan and the input opening is shaped for being fitted the output of an air conditioning duct.
  • US4786812A discloses a lightweight and portable germ-killing machine.
  • the machine has a plurality of ultraviolet light bulbs fixed inside of a protective, and light-shielding, housing, and adjacent to a reflective surface with air passageways therein.
  • a fan is located above the reflective surface and draws air from around the housing towards, and around, the lightbulbs thereby killing any germs floating therein.
  • Filters are located along the sides and underside to block out potentially damaging items.
  • US3846072A discloses an ultraviolet lamp fixture for purifying the air within a room, said fixture comprising a housing having means for suspending said fixture from the ceiling of said room, the bottom wall of said housing having a longitudinally extending opening defining an air inlet through which the air in said room is communicated to the interior of said fixture, an elongated ultraviolet ray tube mounted in said housing above said air inlet; a longitudinally disposed air deflector wall mounted in said housing above said tube, the opposite longitudinal ends of said deflector wall being longitudinally space from the end walls of said housing, said longitudinal ends of said deflector wall and terminating in an intake opening; a motorized fan supported by the top wall of said fixture housing and disposed immediately above said deflector wall intake opening for positively moving air from said room into said housing at said air inlet end and through said longitudinal wall intake opening to the space behind said deflector wall, said housing having a plurality of apertures on said opposite longitudinal end walls and said top wall for exhausting air from said space to said room, a portion of said air flowing through
  • the light fixture or the device or the apparatus provided for disinfecting air using ultraviolet radiations are incapable of disinfecting the air containing pathogens actively due to their linear and uniform structure.
  • additional equipment such as multiple blowers or fans or a single blower or fan of a higher power, but this involves high power consumption that makes the light fixture not eco-friendly, and heavier, thereby making it costly.
  • Due to the simple and plain structure of the light fixture the air is enabled to flow through the light fixture or device or apparatus passively and also the airflow pattern is such that the rate of entry of air containing pathogens is incoherent with the rate of disinfection within the light fixture, thus rendering the light fixture inefficient.
  • the term “disinfection” needs to be considered in the sense of making the air free of germs/pathogens or making the air free of all those airborne micro-organisms responsible for spreading diseases.
  • air containing pathogens has been used in various embodiments, paragraphs and claims of the present invention, which refers to the air containing a significant amount of pathogens/germs or containing pathogens/germs more than the air exhausted out from the outlet, and adapted to be always sucked in by the inlet for disinfecting.
  • blowers and wind tunnels have been used in various embodiments, paragraphs and claims of the present invention, and has been interchangeably used and should be understood and interpreted to have the same meaning.
  • a modular lighting apparatus for disinfecting surrounding air comprises a housing provided with inlets and outlets for receiving in air containing pathogens at a certain volumetric rate and exiting out the disinfected air at another volumetric rate, at least two blowers, each having a downwardly oriented vent and an upwardly oriented vent, wherein said downwardly oriented vent coincides with the inlet and said upwardly oriented vent coincides with the outlet of the housing, one or more ultraviolet light source secured in the blower across its horizontal length and wherein at least two blowers are anti-parallelly and adjacently disposed within the housing, and cross-sectionally tapering from the inlet towards the outlet of the housing for actively pulling in the air containing pathogens to create a vortex of air so as to augmenting the air pulled in to run over the ultraviolet light source for efficiently exhausting out the disinfected air upwardly at various angles.
  • said downwardly oriented vent and upwardly oriented vent are provided with fans for pulling in the air containing pathogens and exhausting out the disinfected air and wherein said downwardly oriented vent coinciding with the inlet is diametrically bigger than the upwardly oriented vent coinciding with the outlet so as to sufficiently prolong the duration of exposure of air containing pathogens to the ultraviolet light source for optimum disinfection.
  • a modular lighting apparatus for disinfecting the surrounding air comprises a housing provided with inlets and outlets for receiving in air containing pathogens at a certain volumetric rate and exiting out the disinfected air at another volumetric rate, at least two blowers, each having a downwardly oriented vent and an upwardly oriented vent, wherein said downwardly oriented vent coincides with the inlet and said upwardly oriented vent coincides with the outlet of the housing, one or more UVC light source secured in the blower across its horizontal length and wherein said at least two blowers are anti-parallelly and adjacently disposed along the horizontal within the housing, and cross-sectionally tapering from the inlet towards the outlet of the housing for actively pulling in the air containing pathogens to create a vortex of air so as to augmenting it to run over the UVC light source for efficiently exhausting out the disinfected air upwardly at various angles, wherein said upwardly oriented vent of the blower makes an angle between 15 and 45 degrees with the horizontal
  • said upwardly oriented vent makes an angle of 30 degrees with the horizontal and exhausts out the disinfected air at the same angle with the horizontal and/or wherein said upwardly oriented vent makes an angle of 120 degrees with the downwardly oriented vent horizontal and exhausts out the disinfected air at the same angle with respect to the direction in which the air containing pathogens is pulled in through the downwardly oriented vent.
  • a modular lighting apparatus for disinfecting surrounding air comprises a housing provided with inlets and outlets for receiving in air containing pathogens at a certain volumetric rate and exiting out the disinfected air at another volumetric rate, at least two blowers, each having a downwardly oriented vent and an upwardly oriented vent, wherein said downwardly oriented vent coincides with the inlet and said upwardly oriented vent coincides with the outlet of the housing, one or more UVC light source secured in the blower across its horizontal length and wherein said at least two blowers are anti-parallelly and adjacently disposed along the horizontal within the housing, and cross-sectionally tapering from the inlet towards the outlet of the housing for actively pulling in the air containing pathogens to create a vortex of air so as to augmenting it to run over the UVC light source for efficiently exhausting out the disinfected air upwardly at various angles, wherein said housing is provided with a sensor configured to sense the presence of any obstacle, if any, at
  • the certain volumetric rate at which the air containing pathogens is pulled in at the inlet and another volumetric rate of disinfected air exhausted out from the outlet are consecutive Fibonacci Numbers in magnitude and/or wherein the certain volumetric rate at which the air containing pathogens is pulled in at the inlet is 1.6 to 1 .7 times the other volumetric rate of disinfected air exhausted out from the outlet.
  • the lighting apparatus is powered from its in-built battery or external electricity supplied via wired connection or replaceable battery or its combination to enable switching power modes as per the requirement.
  • said UVC light source emits wavelengths in a range of 100 to 300 nm.
  • a method for disinfecting surrounding air through a lighting apparatus having an UVC light source comprising pulling in air containing pathogens from at least two inlets of the lighting apparatus at a certain volumetric rate, advancing the air containing pathogens through tapering cross-sections of the lighting apparatus for creating a vortex of air along the horizontal length of the lighting apparatus, exposing the vortex of air to the UVC light source for disinfecting the air containing pathogens efficiently and exhausting out the disinfected air upwardly through at least two outlets of the lighting apparatus at another volumetric rate at various angles, and wherein the method comprises of disinfecting the air containing pathogens efficiently to augmenting the air flow by creating the vortex of air through the tapering cross sections of the lighting apparatus, wherein pulling in of the air containing pathogens through the inlets and exhausting out of the disinfected air through the outlets are anti-parallelly and adjacently disposed along the horizontal within the housing.
  • said method comprises of creating the vortex of air through the tapering cross sections so as to sufficiently prolong the duration of exposure of air containing pathogens to the UVC light source for optimum disinfection.
  • said method comprises of exhausting out the disinfected air through the outlets at an angle between 15 and 45 degrees with the horizontal.
  • said method comprises of exhausting out the disinfected air through the outlets at an angle between 30 degrees with the horizontal and/or wherein said exhausting out of the disinfected air through the outlets makes an angle of 120 degrees with the pulling in of the air containing pathogens through the inlets.
  • said method comprises of generating air micro-currents employing pulling in the air containing pathogens at the certain volumetric rate on the inlets and coupling with the tapering cross section of the apparatus so as to augment the vortex of air for efficiently disinfecting the air containing pathogens and exhausting out the disinfected air at another volumetric rate through the outlets.
  • said method comprises of illuminating the space around the lighting apparatus employing a light source.
  • a method for disinfecting surrounding air through a lighting apparatus having an UVC light source comprising pulling in air containing pathogens from at least two inlets of the lighting apparatus at a certain volumetric rate, advancing the air containing pathogens through tapering cross-sections of the lighting apparatus for creating a vortex of air along the horizontal length of the lighting apparatus, exposing the vortex of air to the UVC light source for disinfecting the air containing pathogens efficiently and exhausting out the disinfected air upwardly through at least two outlets of the lighting apparatus at another volumetric rate at various angles, and wherein the method comprises of disinfecting the air containing pathogens efficiently to augmenting the air flow by creating the vortex of air through the tapering cross sections of the lighting apparatus, wherein pulling in of the air containing pathogens through the inlets and exhausting out of the disinfected air through the outlets are anti-parallelly and adjacently disposed along the horizontal within the housing, wherein the certain volumetric rate at which the air containing path
  • Figure 1 shows a front view illustrating internal components of the lighting apparatus.
  • Figure 2 shows a front view for the arrangement of wind tunnels or blowers relative to each other and its side view.
  • Figure 3a shows the relative cross-sectional placement of the wind tunnels/blowers.
  • Figure 3b shows the perspective view for the arrangement of wind tunnels or blowers relative to each other.
  • Figure 4a shows the perspective bottom view of the lighting apparatus.
  • Figure 4b shows the bottom view of the lighting apparatus.
  • Figure 4c shows the perspective top view of the lighting apparatus.
  • Figure 5a shows the side view of the lighting apparatus.
  • Figure 5b shows the side view of the lighting apparatus illustrating the side cross-sectional view of the wind tunnels.
  • Figure 6 shows the exploded view of the lighting apparatus.
  • a system for disinfecting a definite area comprising a plurality of modular lighting apparatus, wherein each said modular lighting apparatus is made to be hanging from the ceiling and arranged in a particular configuration that helps in inducing flow of air currents coupled with emitting UVC light of wavelengths ranging between 100-300 nm to disinfect the air containing pathogens and exhaust out the disinfected air for circulating the same in the definite area, wherein, the height of the each hanging lighting apparatus from the ground is sufficiently high such that humans never come in contact with the emitted wavelength.
  • said flow of air microcurrents is preferably an air microcurrent generated by the blowers and reinforced by the variable cross section of the blowers producing a wind tunnel effect and enabling the exchange of air to take place on micron level, thereby, the air containing pathogens in the air microcurrents gets exposed to the UV wavelengths sufficiently to get disinfected till micron level.
  • said lighting apparatus is provided with multiple electrical switches for regulating its operation in terms of keeping the light source on or off, maintaining the flow of air currents coupled with emitting required wavelengths from UV light source and detecting the presence of any obstacle in a close proximity of the lighting apparatus.
  • the said lighting apparatus is provided with one or more of sensors for sensing the presence of any obstacle, preferably humans, in the path of UV light rays coming out of the apparatus. If, at any time, during when the apparatus is operational, the presence of any human is detected by the sensors, one of the electrical switches called as “Kill Switch” is automatically disables the emission of the wavelengths from the UV light source, flow of air currents and the light source illuminating the surrounding or optionally only the emission of UV wavelength is stopped.
  • Kill Switch one of the electrical switches called as “Kill Switch” is automatically disables the emission of the wavelengths from the UV light source, flow of air currents and the light source illuminating the surrounding or optionally only the emission of UV wavelength is stopped.
  • a lighting apparatus which is an upper irradiation system capable of neutralizing pathogens present in the air by directing the pathogen containing air to travel through the blowers (also referred as wind tunnels in this invention) functionally serving as wind tunnels, wherein the wind tunnels are internally provided with UVC light source, preferably UVC LED strips along its horizontal length and are designed to enable the lighting apparatus to generally receive a certain volume of air via the inlet which is relatively more or equally pathogenic as compared to the same volume of the air in other parts of the surrounding, thereby avoiding the circulation of the same disinfected air through the wind tunnel, which is just exhausted out from the outlet, and hence causing the relatively more air containing pathogens to selectively get pulled into the wind tunnel before the same disinfected air is re-circulated through the wind tunnel for a rapid and an efficient disinfection of the given space area.
  • UVC light source preferably UVC LED strips along its horizontal length and are designed to enable the lighting apparatus to generally receive a certain volume of air via the inlet which is relatively
  • the present invention in order to develop the lighting apparatus for efficiently disinfecting a given area of space which would better utilize the energy inputs, there are a few parameters that have been taken into consideration, wherein said parameters are but not limited to diameters of inlet and outlet of the housing, diameter of the inlet and outlet vents of the blowers/wind tunnels, the overall length of the wind tunnels, the length of exposure needed for pathogens to be neutralized by the UVC light or simply the length of UVC LED strips along the horizontal length of the wind tunnel, the angular speed of the fans at inlet and outlet of the wind tunnels, angle of the upwardly and downwardly oriented vents of the wind tunnel with the horizontal, angle with the horizontal at which the disinfected air is exhausted out and the resistance offered by the pathogens.
  • parameters are but not limited to diameters of inlet and outlet of the housing, diameter of the inlet and outlet vents of the blowers/wind tunnels, the overall length of the wind tunnels, the length of exposure needed for pathogens to be neutralized by the UVC light or simply
  • UVGI Ultraviolet Germicidal Irradiation
  • a lighting apparatus for an area of 100 or 120 sq. ft., comprising a housing housed with two wind tunnels anti-parallelly and adjacently disposed along the horizontal, having two downwardly oriented vents fitted with fans, wherein it is to be ensured that the fans used on the inlet vent of the wind tunnels/blowers pulls in at least 1 cubic foot per minute (CFM) of air containing pathogens per sq. ft. of the environment, wherein the diameter of the fans used on the inlet vent and outlet vent are respectively 6” providing a power of 33 HP and 4” providing a power of 53.2 HP to adequately cover an area of 100 or 120 sq. ft.
  • CFM cubic foot per minute
  • the wind tunnels are anti-parallelly and adjacently disposed along the horizontal within an estimated 4 feet long enclosure having varying inlet and outlet tunnel diameter (6” and 4”) to prolong air exposure time for maximizing the disinfection, wherein the horizontal length of the housing is more than 4 feet but less than 5 feet, wherein the fans fitted in the wind tunnels preferably runs at an angular speed of 2930 rpm.
  • UVC LED strip of 15W are flexible and suggested/sufficient to be placed alongside the interior of the wind tunnels for emitting wavelengths in a range of 250-280 nm, however, it is noted that the peak efficiency for disinfection is achieved at the wavelength of 265 nm.
  • the suggested LED strip for UVC light is having 3.6 feet length and provided with a power of 14.4W and emits wavelength of 270 nm.
  • parameters such as diameter of the inlets and outlets of the housing, diameter of the inlet and outlet vents of the blowers/wind tunnels, the overall length of the wind tunnels, the length of exposure needed for pathogens to be neutralized by the UVC light or simply the length of UVC LED strips along the horizontal length of the wind tunnel, the angular speed of the fans at inlet and outlet of the wind tunnels, angle of the upwardly and downwardly oriented vents of the wind tunnel with the horizontal, and the angle with the horizontal at which the disinfected air is exhausted out are proportionately varied depending upon the given area of space by obtaining their most optimal measurements so as to maintain the ratio of the volumetric rate at which the air containing pathogens on the inlets is pulled to the volumetric rate at which the disinfected air on the outlets is exhausted out between 1 .6 to 1 .7 or maintaining the magnitude of volumetric rate at inlets and outlets as consecutive Fibonacci sequence.
  • a lighting apparatus (1) as seen from the front view or back view is shown, further comprising a housing (2) vertically supported by two equidistant supports (3) from the top of the housing (2) against the ceiling, wherein the housing (2) is housed with two blowers/wind tunnels (4) placed adjacently with each other along the horizontal length of the housing (2), wherein each wind tunnel (4) is divided into 2 parts - inlet tube (4a) and outlet tube (4b), wherein the inlet tube (4a) and the outlet tube (4b) are provided with a downwardly oriented vent (5) and an upwardly oriented vent (6), wherein said downwardly oriented vent (5) coincides with the inlet (9) and said upwardly oriented vent (6) coincides with the outlet (10) of the housing.
  • the downwardly oriented vent (5) and the upwardly oriented vent (6) are provided with fans (7a and 7b) for pulling in the air containing pathogens and exiting out the disinfected air, wherein, interior of the blowers (4) is provided with UVC light Source (8) along its horizontal length for disinfection of the pathogens containing air, wherein the UVC light Source (8) is preferably LED UVC strips and also the apparatus (1) can be provided with a light source (13) on its exterior bottom along its horizontal length for illuminating the space around it. Also, power sources (11) for driving the fans at a desired angular speed is provided just horizontally next to the end of the LED UVC strips.
  • sensors (12) provided on the side bottom of the housing (2) for detecting the presence of any obstacle at its height or above it. In case an obstacle, preferably a human is detected in the close proximity of the apparatus, the sensors (12) immediately signal to switch off the UVC light (8).
  • the wind tunnels/blowers (4) shown are anti-parallelly and adjacently disposed along the horizontal with respect to each other, the fans (7a) provided at the downwardly oriented vents (5) in the inlet tube region (4a) is diametrically bigger than the fans (7b) provided at the upwardly oriented vent (6) in the outlet tube region (4b), wherein the inlet tube region (4a) of the wind tunnels (4) is bent and has an inverted U-shape (4a) for pulling in the air containing pathogens from the downward direction through the downwardly oriented vents (5), wherein the outlet tube region (4b) is formed linearly and upwardly by extending the end point of the inlet tube region (4a) for exiting the disinfected air via the upwardly oriented vent (6), wherein the outlet tube region (4b) is cross-sectionally tapered along the horizontal length of the wind tunnel (4) for prolonging the exposure time and made to be raised above the horizontal (H) by some angles (Q) for exit
  • a side view of the anti-parallel and adjacent placement along the horizontal of the wind tunnels (4) is shown, wherein the bent portion forming the inverted U-shape (4a) of the wind tunnel (4) for pulling in the air containing pathogens is located adjacent to the raised portion (4b) above the horizontal (H) for exiting out the disinfected air and same is the view on the other side for the anti-parallel and adjacent placement of the wind tunnels (4).
  • the diameter of the inlet tube region (4a) and of its respective fan (7a) is bigger than the diameter of the outlet tube region (4b) and its respective fan (7b) and this further contributes to enhancing the exposure time for the pulled in air through the downwardly oriented vents (5) and creating vortex of air to augment the flow of air through the wind tunnel (4).
  • FIG. 4a showing bottom perspective view of the lighting apparatus (1) hanging from the ceiling with the help of supports (3) across the horizontal ends of the apparatus.
  • Fans are situated on the inlets (9) of the housing (1) that coincides with the downwardly oriented vents (5) of the blowers (4) for pulling in the air containing pathogens from the downward direction.
  • An outlet (10) in the housing (2) coinciding with the upwardly oriented vents (6) of the blower (4) is provided on the sides of the housing (2).
  • Enclosures (13) are provided within the housing (2) for containing the wind tunnels (4) in an anti-parallel manner, wherein a horizontal space (14) is provided between the enclosures (13) on the exterior bottom of the housing (2) for mounting a light source (15) so as to illuminating the surrounding area.
  • Figure 4a can also be viewed as top perspective view of the open lighting apparatus showing its internal structure, wherein the fans (7a) on the inlet (9) are located on the two opposite corners of the housing (2) for pulling in the air containing pathogens from the surrounding.
  • FIG. 4b showing the bottom view of the lighting apparatus (1), wherein the upper left and bottom right corners are the housing’s inlets (9) coinciding with the downwardly oriented vents (5) provided with the fans (7a) for pulling in the air containing pathogens.
  • the upper middle and lower middle part forms the bottom portion of the enclosure (13) in which the wind tunnels (4) are housed from the top in an anti-parallel manner, wherein the middle portion is a horizontal space (14), where a light source (15) can be horizontally affixed for illuminating the surrounding.
  • the lighting apparatus (1) is modular as its overall dimensions can be varied depending on the area in which it is to be installed and accordingly the dimension and parameters for the fans (7a and 7b), UVC light (8) and light source (15), wind tunnels (4), power source (11), sensors (12), inlets (9), outlets (10), and supports (2), etc. can be modified.
  • Figure 5a shows the side view of the lighting apparatus (1), wherein the upwardly oriented vent (6) coincides with the outlet (10) on both of its side, wherein the fan (7b) is provided at the upwardly oriented vent of the wind tunnel (5) above horizontal (5), wherein the housing (2) is supported from the ceiling with the help of support.
  • the sensor (12) is provided on the exterior side bottom of the housing for detecting the presence of obstacles in its close proximity.
  • Figure 5b shows the side view of the lighting apparatus (1) illustrating the internal arrangement of the apparatus’s components, wind tunnels (4) are anti-parallelly and adjacently disposed inside the enclosures (13), having UVC light sources (8) placed on the bottom of the interior of the wind tunnels (4) along the horizontal length of the apparatus (1) supported from the ceiling, wherein a light source (15) for illuminating the nearby space is affixed on the bottom of the housing (2) between the left and right side of the enclosure (13).
  • Figure 6 explains the entire mechanism for joining of the various components of the lighting apparatus (1), comprising two supports (3) from the top for withstanding the weight of housing (2) below, wherein the housing (2) is configured to receive the wind tunnels (4) in its enclosures (13) in an anti-parallel manner, wherein the UVC light source (8), preferably LED light strips are made to be secured along the horizontal length of the wind tunnels (4) within its downwardly protruded structures (16), wherein the downwardly oriented vents (5) and the upwardly oriented vents (6) coincides with the housing’s inlet (9) and outlet (10) while the wind tunnels (4) are being placed inside the housing (2) and are configured to secure dimensionally dissimilar fans (7a and 7b), wherein the power source (11) is provided for driving the fans (7a and 7b) for at inlet (9) and outlet (10) of the housing.
  • the power source (11) is provided for driving the fans (7a and 7b) for at inlet (9) and outlet (10) of the housing.
  • the wind tunnels (4) along with UVC light source (8), fans (7a and 7b), power source (11) are housed within the enclosure (13) of the housing (2), the light source (15) can be detachably affixed onto the bottom of the housing (2) between left and right enclosures.
  • FIG 7 illustrating an exemplary embodiment of the present invention, showing air-flow pattern (17 to 18) through the blower/wind tunnel (4) horizontally housed within the housing (2), wherein the fan (7a) provided at the downwardly oriented vent (5) in the inlet tube region (4a) pulls in air containing pathogens (17) from the downward direction and advances further through inverted U-Shaped portion (19) to create a vortex of air to pass over UVC light source (8) through the middle portion (20) of the tunnel, and further exiting out as disinfected air (18) through the upwardly oriented vent (6) via the fan (7b) at an angle between 15-45 degrees above the horizontal (H).
  • the fan (7a) provided at the downwardly oriented vent (5) in the inlet tube region (4a) pulls in air containing pathogens (17) from the downward direction and advances further through inverted U-Shaped portion (19) to create a vortex of air to pass over UVC light source (8) through the middle portion (20) of the tunnel, and further exiting out as disinfected
  • the fans (7a) on the inlet side (9) is diametrically bigger than the fans (7b) provided on the outlet side (10) of the tunnel (4), wherein the tube regions (4a and 4b) cross-sectionally tapers from the inlet (9) towards the outlet (10) along the horizontal length of the wind tunnel (4), the fans (7a and 7b) are situated at the downwardly oriented vents (5) and upwardly oriented vents, and, therefore, due to fan’s diametric difference on the inlet (9) and the outlet (10) and cross-sectionally bending and tapering shape of the tunnel (4) along the horizontal length of the housing (2), the exposure time for air containing pathogens (17) over the UVC light source (8) is prolonged to provide efficient disinfection, and the disinfected air (18) is made to be exhausted out above the horizontal (H) between 15 and 45 degrees of angles through the upwardly oriented vent (6) from the outlet (10) in the right direction, wherein an identical blower/wind tunnel (not marked) is anti-parallelly disposed just behind the tunnel shown

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

Sont divulgués un appareil d'éclairage modulaire (1) et un procédé de désinfection de l'air circulant dans une zone, ledit appareil (1) comprenant un boîtier (2) pourvu d'orifices d'entrée (9) et de sortie (10) pour recevoir de l'air contenant des agents pathogènes et évacuer de l'air exempt d'agents pathogènes, au moins deux souffleries/tunnels d'air (4) ayant des extrémités coïncidant avec l'entrée (9) et la sortie (10) du boîtier (2), une ou plusieurs sources de lumière UVC (8) fixées à l'intérieur des tunnels d'air (4), et lesdits deux tunnels d'air (4) s'effilant en coupe transversale le long de l'horizontale étant disposés de manière antiparallèle et adjacente à l'intérieur du boîtier (2), des ventilateurs étant prévus sur ladite entrée (9) et côté sortie (10) sont arithmétiquement dépendants pour tirer activement dans l'air contenant des pathogènes à partir d'une direction vers le bas pour créer un tourbillon d'air de façon à l'augmenter de façon à s'étendre sur la source de lumière UVC (8) pour évacuer efficacement l'air désinfecté vers le haut à un angle compris entre 15 et 45 degrés par rapport à l'horizontale (H).
PCT/IN2021/050587 2020-06-17 2021-06-16 Appareil d'éclairage architectural modulaire pour nettoyer des polluants et des agents pathogènes aériens WO2021255759A1 (fr)

Applications Claiming Priority (2)

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IN202011025482 2020-06-17
IN202011025482 2020-06-17

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WO2021255759A1 true WO2021255759A1 (fr) 2021-12-23

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170321877A1 (en) * 2016-05-09 2017-11-09 John Polidoro Wall mounted hospital bed, health care facility, or other wall (or surface) type light with ultraviolet-c germicidal (or other) air decontamination system
WO2019131124A1 (fr) * 2017-12-27 2019-07-04 ウシオ電機株式会社 Dispositif de traitement de gaz

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170321877A1 (en) * 2016-05-09 2017-11-09 John Polidoro Wall mounted hospital bed, health care facility, or other wall (or surface) type light with ultraviolet-c germicidal (or other) air decontamination system
WO2019131124A1 (fr) * 2017-12-27 2019-07-04 ウシオ電機株式会社 Dispositif de traitement de gaz

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