WO2022128109A1 - Dispositif de purification d'air doté d'une source de lumière uv - Google Patents

Dispositif de purification d'air doté d'une source de lumière uv Download PDF

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Publication number
WO2022128109A1
WO2022128109A1 PCT/EP2020/086831 EP2020086831W WO2022128109A1 WO 2022128109 A1 WO2022128109 A1 WO 2022128109A1 EP 2020086831 W EP2020086831 W EP 2020086831W WO 2022128109 A1 WO2022128109 A1 WO 2022128109A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
purification device
air purification
housing
zone
Prior art date
Application number
PCT/EP2020/086831
Other languages
English (en)
Inventor
Markus Möseler
Ralf HÄRING
Original Assignee
Valeo Thermal Commercial Vehicles Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Thermal Commercial Vehicles Germany GmbH filed Critical Valeo Thermal Commercial Vehicles Germany GmbH
Priority to PCT/EP2020/086831 priority Critical patent/WO2022128109A1/fr
Publication of WO2022128109A1 publication Critical patent/WO2022128109A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards

Definitions

  • the invention relates to a device for air purification, in particular to standalone device for air purification using ultraviolet radiation.
  • UV-C light i.e. ultraviolet radiation with wavelength between 100 and 280 nm
  • UV-C light is particularly effective at disrupting DNA of viruses such as COVID-19, so that the virus can no longer reproduce itself.
  • implementation of UV light sources usually is problematic in view of safety. The beneficial effect of destroying viruses, bacteria and fungi can easily be harmful to users if they are subject to direct exposure to UV radiation.
  • utilization of UV light sources for purification on air is problematic in terms of space, cost and reliability concerns, especially for mobile applications.
  • the object of the invention is an air purification device comprising a housing with at least one air inlet and at least one air outlet, an air propulsion device configured to force the air movement between the air inlet and the air outlet, and a UV light source located within the housing between the air inlet and the air outlet, wherein it further comprises at least one light trap configured to prevent the UV light from escaping the housing through the air inlet or the air outlet.
  • the light trap directly faces the UV light source.
  • the light trap comprises an air channel with subsequently arranged first air opening, obstruction section and second air opening, wherein the obstruction section fully obstructs the first opening with respect to the second opening.
  • the air channel comprises two non-flat walls separated from each other.
  • each of the two non-flat walls has at least one inflection point on the obstruction section.
  • the obstruction section is formed by one of the walls and comprises a sharp edge.
  • the obstruction section is formed by one of the walls and comprises a smooth arch.
  • the air channel comprises a serpentine path with a plurality of consecutively arranged obstruction sections between the first air opening and a second air opening.
  • the light trap comprises a plurality of the air channels arranged next to each other within the air inlet or the air outlet.
  • the light trap comprises a UV protection coating.
  • the coating is a black matte powder coating.
  • the air purification device comprises a housing with an air inlet zone and an air outlet zone, an air propulsion device configured to force the air flow between the air inlet zone and the air outlet zone, the housing comprising an elongated irradiation chamber with a first end and a second end, the air inlet zone being located on the first end of the irradiation chamber and the outlet zone being located on the second end, a UV light source within the housing, following the elongation of the irradiation chamber so that the irradiation therein is substantially uniform, wherein at least one of the air inlet zone and the air outlet zone comprises an airstream dividing section.
  • the airstream dividing section is formed by one of the walls of the housing.
  • the airstream dividing section forms at least two channels communicating the irradiation chamber with the outer side of the housing.
  • At least one of the channels has an axis of extension which is oblique with respect to the elongation direction of the irradiation chamber.
  • At least one of the channels has an axis of extension which is perpendicular with respect to the elongation direction of the irradiation chamber.
  • the air purification device comprises a plurality of UV light sources.
  • both the air inlet zone and the air outlet zone comprise airstream dividing sections.
  • the configuration of the air inlet zone mirrors the configuration of the air outlet zone.
  • Fig. 1 shows the air purification device in an isometric view
  • Fig. 2 shows the air purification device in an isometric view, with part of the housing removed;
  • Fig. 3 shows a top view of the air purification device
  • Figs. 4a, 4b show an example of a light trap
  • Figs. 5a, 5b show another example of a light trap
  • Figs. 6a, 6b show another example of a light trap
  • Fig. 7 presents another example of a light trap
  • Fig. 8 presents one example of air flow path
  • Fig. 9 presents another example of air flow path
  • Fig. 10 presents another example of air flow path
  • Fig. 11 presents another example of air flow path
  • Fig. 12 presents another example of air flow path
  • Fig. 13 presents another example of air flow path.
  • Fig. 1 shows the air purification device 1 in an isometric view.
  • the air purification device 1 comprises a housing 2 with at least one air inlet 3 and at least one air outlet 4.
  • the housing 2 is shaped to define internal volume for air.
  • the housing 2 is air-tight between the air inlet 3 and the air outlet 4.
  • the housing 2 has substantially trapezoid shape, with a base of greater area than the top wall. Such shape provides an improved rigidity, as well as is safer in case placement in a vehicle, e.g. bus, with the base being attached to the roof within the passenger space.
  • Fig. 2 shows the air purification device 1 in an isometric view, with part of the housing removed.
  • the air purification device 1 comprises an air propulsion device 5 configured to force the air movement between the air inlet 3 and the air outlet 4.
  • it may be in form of a known blower. According to needs, the number and configuration of air propulsion devices 5 may vary. In the examples shown in Fig. 1 and Fig. 2, there are two air propulsion devices 5 at the air outlet 4.
  • the air purification device 1 further comprises a UV light source 6, located within the housing 2 between the air inlet 3 and the air outlet 4.
  • the air travelling between the air inlet 3 and the air outlet 4 is subject to UV radiation so that airborne mold bacteria can be killed, and viruses floating in the air can be inactivated. Consequently, the air leaving the air purification device 1 is safe for users.
  • the UV light source produces UV-C light with 254nm wavelength. This wavelength has been proven to be optimal for neutralizing harmful viruses, for example Covid-19.
  • the air purification device 1 further comprises at least one light trap 10 configured to prevent the UV light from escaping the housing 2 through the air inlet 3 or the air outlet 4.
  • the housing 2 comprises an electrical ballast 7 for the UV light source 6, as well as an electronic control unit 8.
  • Fig. 3 shows a top view of the air purification device 1 .
  • the light trap 10 directly faces the UV light source 6.
  • the size of the air purification device 1 can be optimized for an efficient operation with a compact packaging.
  • the UV light sources 6 produce UV-C radiation with 254 nm wavelength.
  • Figs. 4a, 4b show an example of a light trap 10.
  • the light trap 10 comprises an air channel 11 with subsequently arranged first air opening 12, obstruction section 13 and second air opening 14.
  • the obstruction section 13 fully obstructs the first opening 12 with respect to the second opening 13.
  • the air channel 11 comprises two non-flat walls 15 separated from each other.
  • each of the two non-flat walls 15 has at least one inflection point 18 on the obstruction section 13.
  • the obstruction section 13 is formed by one of the walls 15 and comprises a sharp edge.
  • the light trap 10 may comprise a plurality of the air channels 11 arranged next to each other within the air inlet 3 or the air outlet 4, as shown in Fig. 4a, 5a, 6a.
  • the non-flat walls 15 are connected to each other by means of shared bottom wall 17 and top wall 16. Further, in case of a plurality of air channels 11 , they can be connected by shared bottom wall 17 and top wall 16, thereby forming a compact light trapping unit.
  • the light trap 10 comprises a UV protection coating.
  • a black matte powder coating is one example of such coating.
  • Figs. 5a, 5b show another example of a light trap 10.
  • the air channel 11 comprises a serpentine path with a plurality of consecutively arranged obstruction sections 13 between the first air opening 12 and a second air opening 14.
  • Figs. 6a, 6b show another example of a light trap 10.
  • the air channel 11 also comprises a serpentine path with a plurality of consecutively arranged obstruction sections 13 between the first air opening 12 and a second air opening 14.
  • one of the obstruction sections 13 is more pronounced and protrudes further into the air channel 11 compared to the other ones.
  • Fig. 7 presents another example of a light trap 10.
  • the obstruction section 13 is formed by one of the walls 15 and comprises a smooth arch.
  • the air purification device 1 comprises a housing 2 with at least one air inlet zone 13 and at least one outlet air zone 14.
  • the air propulsion device 5 configured to force the air movement between the air inlet zone 13 and the air outlet zone 14.
  • At least one air inlet 3 is located in the air inlet zone 13 and at least one outlet 4 is located in the outlet zone 14. It is envisaged that there may be plurality of air inlets 3 located in the air inlet zone 3 and plurality of air outlets 4 in the air outlet zone 14.
  • the housing 2 comprises an elongated irradiation chamber 115 with a first end 111 and a second end 112.
  • the air inlet zone 13 is located on the first end 111 of the irradiation chamber 115, while the outlet zone 14 is located on the second end 112.
  • the UV light source 6 within the housing 2 follows the elongation of the irradiation chamber 115 so that the irradiation therein is substantially uniform.
  • At least one of the air inlet zone 13 and the air outlet zone 14 comprises an airstream dividing section 120a, 120b.
  • the airstream dividing section 120a, 120b may be formed by one of the walls of the housing 2.
  • the airstream dividing section 120a, 120b may be a separate element introduced into the housing 2.
  • the airstream dividing section 120a, 120b forms at least two channels 121 a, 121 b, 122a, 122b communicating the irradiation chamber 115 with the outer side of the housing 2.
  • at least one of the air inlet zone 13 and the air outlet zone 14 comprises an airstream dividing section 120a, 120b and the light trap 10 is omitted.
  • Fig. 8 presents one example of air flow path.
  • the airstream dividing section 120a forms two channels 121 a, 122a which serve as two separate air inlets into the air purification device 1 .
  • Fig. 9 presents another example of air flow path.
  • the airstream dividing section 120b forms two channels 121 b, 122b which serve as two separate air outlets from the air purification device 1 .
  • Fig. 10 presents another example of air flow path.
  • the airstream dividing section 120a forms two channels 121 a, 122a which serve as two separate air inlets into the air purification device 1
  • the airstream dividing section 120b forms two channels 121 b, 122b which serve as two separate air outlets from the air purification device 1.
  • the configuration of the air inlet zone 13 mirrors the configuration of the air outlet zone 14.
  • At least one of the channels 121 a, 121 b, 122a, 122b may have an axis of extension which is oblique with respect to the elongation direction of the irradiation chamber 115.
  • Fig. 11 presents another example of air flow path.
  • the airstream dividing section 120a forms two channels 121 a, 122a which serve as two separate air inlets into the air purification device 1 .
  • Fig. 12 presents another example of air flow path.
  • the airstream dividing section 120b forms two channels 121 b, 122b which serve as two separate air outlets from the air purification device 1 .
  • Fig. 13 presents another example of air flow path.
  • the airstream dividing section 120a forms two channels 121 a, 122a which serve as two separate air inlets into the air purification device 1
  • the airstream dividing section 120b forms two channels 121 b, 122b which serve as two separate air outlets from the air purification device 1.
  • the configuration of the air inlet zone 13 mirrors the configuration of the air outlet zone 14.
  • At least one of the channels 121 a, 121 b, 122a, 122b may have an axis of extension which is perpendicular with respect to the elongation direction of the irradiation chamber 115.
  • each of the inlets 3 in the air inlet zone 13 and each of the outlets 4 in the air outlet zone 14 can be equipped with the light traps shown in Figs. 4a-7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

1. L'invention concerne un dispositif de purification d'air (1) comprenant un boîtier (2) comportant au moins une entrée d'air (3) et au moins une sortie d'air (4), un dispositif de propulsion d'air (5) conçu pour forcer le mouvement d'air entre l'entrée d'air (3) et la sortie d'air (4), et une source de lumière UV (6) située à l'intérieur du boîtier (2) entre l'entrée d'air (3) et la sortie d'air (4), caractérisé en ce qu'il comprend en outre au moins un piège à lumière (10) conçu pour empêcher la lumière UV de s'échapper du boîtier (2) à travers l'entrée d'air (3) ou la sortie d'air (4).
PCT/EP2020/086831 2020-12-17 2020-12-17 Dispositif de purification d'air doté d'une source de lumière uv WO2022128109A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2020/086831 WO2022128109A1 (fr) 2020-12-17 2020-12-17 Dispositif de purification d'air doté d'une source de lumière uv

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2020/086831 WO2022128109A1 (fr) 2020-12-17 2020-12-17 Dispositif de purification d'air doté d'une source de lumière uv

Publications (1)

Publication Number Publication Date
WO2022128109A1 true WO2022128109A1 (fr) 2022-06-23

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ID=74141497

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/086831 WO2022128109A1 (fr) 2020-12-17 2020-12-17 Dispositif de purification d'air doté d'une source de lumière uv

Country Status (1)

Country Link
WO (1) WO2022128109A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505904A (en) * 1994-04-29 1996-04-09 Jji Lighting Group, Inc. Air disinfection unit
US6053968A (en) * 1998-10-14 2000-04-25 Miller; Bob C. Portable room air purifier
WO2004050130A1 (fr) * 2002-11-27 2004-06-17 Novatron, Inc. Systeme de multiplication des flux d'ultraviolet pour steriliser l'air, des dispositifs medicaux et autres materiels
US20080019861A1 (en) * 2003-10-27 2008-01-24 Silderhuis Hermannus Gerhardus Air Treatment Method and Device
US20080134899A1 (en) * 2006-12-11 2008-06-12 General Electric Company Air treatment system
US20170080373A1 (en) * 2015-09-22 2017-03-23 Rolf Engelhard Air purification system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505904A (en) * 1994-04-29 1996-04-09 Jji Lighting Group, Inc. Air disinfection unit
US6053968A (en) * 1998-10-14 2000-04-25 Miller; Bob C. Portable room air purifier
WO2004050130A1 (fr) * 2002-11-27 2004-06-17 Novatron, Inc. Systeme de multiplication des flux d'ultraviolet pour steriliser l'air, des dispositifs medicaux et autres materiels
US20080019861A1 (en) * 2003-10-27 2008-01-24 Silderhuis Hermannus Gerhardus Air Treatment Method and Device
US20080134899A1 (en) * 2006-12-11 2008-06-12 General Electric Company Air treatment system
US20170080373A1 (en) * 2015-09-22 2017-03-23 Rolf Engelhard Air purification system

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