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WO2023237463A1 - Dispositif de désinfection à durée de vie et sécurité améliorées - Google Patents

Dispositif de désinfection à durée de vie et sécurité améliorées Download PDF

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Publication number
WO2023237463A1
WO2023237463A1 PCT/EP2023/064917 EP2023064917W WO2023237463A1 WO 2023237463 A1 WO2023237463 A1 WO 2023237463A1 EP 2023064917 W EP2023064917 W EP 2023064917W WO 2023237463 A1 WO2023237463 A1 WO 2023237463A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
absorbing
disinfecting device
compound
oxide layer
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2023/064917
Other languages
English (en)
Inventor
Rifat Ata Mustafa Hikmet
Sebastiaan BATENBURG
Ties Van Bommel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Signify Holding BV
Original Assignee
Signify Holding BV
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 Signify Holding BV filed Critical Signify Holding BV
Publication of WO2023237463A1 publication Critical patent/WO2023237463A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/25—Rooms in buildings, passenger compartments
    • 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

  • the present invention relates to a disinfecting device having an improved lifetime and safety.
  • the disinfecting device can also have an improved aesthetic appearance.
  • the disinfecting device is particularly suitable for upper air disinfection in a room.
  • UV light As a response to pathogenic outbreaks involving airborne microorganisms it would be beneficial to employ UV light for disinfecting air and objects at locations where the transmission of such microorganisms is believed to occur.
  • Disinfecting luminaires are used to flood spaces such as hospital rooms with UV-B radiation (ultra-violet light having a wavelength between 280 nanometer and 315 nanometer (nm)) and UV-C radiation (ultra-violet light having a wavelength between 100 nm and 280 nm) for disinfection purposes.
  • UV-B radiation ultraviolet-violet light having a wavelength between 280 nanometer and 315 nanometer (nm)
  • UV-C radiation ultraviolet-violet light having a wavelength between 100 nm and 280 nm
  • Such disinfecting luminaires requires a relatively brief time, e.g. several minutes, to achieve adequate disinfection but require the room to be evacuated of people. This is because UV light, and in particular UV-C radiation, has a range of effectiveness which interferes and destroys nucleic acids of bacteria and other microbes, but can also damage human cells.
  • Another type of disinfecting luminaire uses a fixed 405 nm violet light source to provide disinfection without the need to evacuate people from the room.
  • such luminaires may require hours to achieve adequate disinfection since violet light is less effective at killing pathogens compared to UV-B and UV-C radiation, and since the light is dispersed over a wide area such that the irradiance level is relatively low.
  • disinfection by UV light sources is used under controlled conditions, such as within disinfection chambers wherein objects to be disinfected can be placed, or in areas where humans and/or animals are not present during ongoing disinfection, such as surgery theaters or the like.
  • WO2021/247116 discloses a disinfection chamber wherein objects to be disinfected can be placed. The chamber is then closed during the disinfection process, so that safety for the operator is guaranteed.
  • the chamber comprises at least one UV light source and a reflective element capable or reflecting at least 75% nominal reflectance of UV-C, so as to direct the UV radiation towards the object to be disinfected.
  • upper air disinfecting devices have been developed. Such devices can be mounted on the ceiling and emit UV-C radiation which is collimated to be distributed and to remain in the upper air of the room, i.e. the air arranged in vicinity of the ceiling, where people usually are not present. Hence, the risk for potential exposure of humans or animals to the harmful irradiation is largely reduced.
  • upper air disinfection devices comprise a light absorbing louver which allows to control the spatial light distribution. The louver removes harmful UV-C radiation or light emitted at higher angles and only allows predominantly horizontally arranged rays to be emitted (so- called collimation of the UV radiation).
  • US2014/0084185 discloses a disinfecting device that can be used for upper air disinfection.
  • the device comprises a UV light source and 2 pairs of parabolic reflectors which are positioned and designed to collimate and reflect the UV light towards a louver comprising a plurality of lamellae or baffles.
  • the design and positioning of the pairs of reflectors allows to increase the amount of effective UV radiation emitted into the room (thus exiting the device), which increases the efficiency of the device.
  • the louvers of such disinfection devices are currently made from a metal that is coated with a layer of a UV light absorbing materials.
  • a layer comprises typically a polymer layer with embedded particles, wherein the embedded particles have UV radiation/light absorbing properties.
  • One of the disadvantages of such layers is that they suffer from degradation, such as degradation of the polymer and/or particles, which, in itself, does not have sufficient UV light resistant properties. Consequently, degradation of the coating layer leads to increased UV reflection over time, instead of absorption, which leads to unsafe situations as UV light emitted from the device is no longer collimated enough to be distributed only in the upper air of the room. For example, parts and/or powder may be released from the surface of the louver/metal. Further, degrading layers may require substantial maintenance to repair or replace, leading to downtime of the device and reduction of efficiency and efficacy. Yet another disadvantage is that such coating layers are often considered to be not aesthetically appealing, in particular when the pigments used comprise black dye.
  • Disinfecting devices of the present invention may be particularly suitable for disinfecting spaces with a high level of activity, such as a waiting room in a hospital or a veterinary clinic, a public space such as a library, an office, a department store or the like, as well as public transportation means, such as busses, trams, trains or metros.
  • a disinfecting device according to the appended claims.
  • the disinfection device is advantageously used for upper air disinfection.
  • the disinfecting device comprises at least one light source arranged for, in operation, emitting UV light.
  • the light source may be any light source configured to emit light having a high germicidal effect.
  • the UV- spectrum comprises any electromagnetic radiation with a wavelength between 100 nm and 400 nm.
  • the UV wavelength range may be between 100 nm and 280 nm, i.e. the UV-C wavelength range.
  • the UV wavelength range may be between 280 nm and 315 nm, i.e. the UV-B wavelength range.
  • the UV wavelength range may be between 315 nm and 400 nm, i.e. the UV-A wavelength range.
  • the UV light may be omnidirectional, i.e. may be emitted 360 0 from the at least one light source.
  • the light source may be a solid-state light source such as a light-emitting diode, LED, and/or a laser diode. Further, the light source may be a low pressure mercury plasma lamp or an excimer light source.
  • the light source may comprise a plurality of LEDs, each of which emits at least one of: UV-C radiation (100 nm-280 nm); UV-B radiation (280 nm-315 nm); or UV-A radiation (315 nm-400 nm).
  • UV-C radiation 100 nm-280 nm
  • UV-B radiation 280 nm-315 nm
  • UV-A radiation 315 nm-400 nm
  • LED as used in the context of the present invention implies any type of LED known in the art, such as inorganic LED(s), organic LED(s), polymer/polymeric LEDs, violet LEDs, blue LEDs, optically pumped phosphor coated LEDs, optically pumped nano-crystal LEDs.
  • LED can encompass a bare LED die arranged in a housing, which may be referred to as a LED package.
  • UV-C light the LED may be mounted in a cavity covered in a non-contact manner by an emission window made from quartz/fused silica.
  • the plurality of LEDs may comprise at least 10 LEDs, preferably at least 20 LEDs, more preferably at least 30 LEDs.
  • the disinfecting device may comprise a plurality of light sources, each providing an UV light.
  • the wavelengths of the UV light emitted from each light source may be same or different.
  • the disinfecting device may comprise three light sources, wherein the first one of the light sources emits light within the UV-C spectrum, the second one of the light sources emits light within the UV-B spectrum, and the third one of the light sources emits light within the UV-A spectrum.
  • the various light sources might be used together or might be operated individually, depending on the type of microbiological species that needs to be deactivated.
  • the plurality of light absorbing structures further has a longitudinal extension between the proximal end and the distal end, and a transversal extension being substantially perpendicular to the longitudinal extension.
  • the light absorbing structure can have the form or shape of a plate, a cylinder, a triangular prism, a cuboid, a pentagonal prism, a hexagonal prism, or the like.
  • the shape of each light absorbing structure may be same as or different from the shape of the other light absorbing structures.
  • the plurality of substantially parallel light absorbing structures has substantially the same shape.
  • the plurality of substantially parallel light absorbing structures is in the form of N substantially parallel plates, wherein N is as defined above.
  • a plate-shaped light absorbing structure is also known in the field as a lamellae.
  • the plurality of substantially parallel light absorbing structures may be connected.
  • they may form a single unit, a single piece, for example a honeycomb structure or a grid structure.
  • the light absorbing structures according to the present invention are arranged for absorbing a first portion of the UV light.
  • the first portion of the UV light may preferably be at least 10%, more preferably at least 15%, most preferably at least 20% of the total amount of the first light. Further, the first portion may preferably be less than 35%, more preferably less than 30%, most preferably less than 25% of the total amount of the first light.
  • At least one of the plurality of light absorbing structures comprises an anodized metal part which comprises a porous metal oxide layer, the pores of which are at least partially filled with a compound capable of absorbing UV light.
  • the anodized metal part can comprise or substantially consist of aluminium, zinc, titanium, an alloy comprising aluminium, an alloy comprising zinc, an alloy comprising titanium, or combinations of two or more thereof. Alloys comprising aluminium, zinc or titanium can further comprise silicon (e.g. an aluminium-silicon alloy), chromium and manganese.
  • the plurality of light absorbing structures can be the same or a different anodized metal part.
  • the light absorbing structures comprise or substantially consist of the same anodized metal.
  • they can all comprise or substantially consist of aluminium.
  • all of the plurality of light absorbing structures comprises an anodized metal part which comprises a porous metal oxide layer, the pores of which are at least partially filled with a compound capable of absorbing UV light.
  • 1 to N light absorbing structures comprises an anodized part which comprises a porous metal oxide layer, the pores of which are at least partially filled with a compound capable of absorbing UV light.
  • at least 10 %, preferably at least 20 %, more preferably at least 50 %, for example at least 75 %, at least 80 %, more preferably at least 90 % of the light absorbing structures comprises an anodized part which comprises a porous metal oxide layer, the pores of which are at least partially filled with a compound capable of absorbing UV light.
  • N 10
  • at least 2 at least 5, more preferably at least 8, or at least 9, or at least 10 of the light absorbing structures comprises an anodized part which comprises a porous metal oxide layer, the pores of which are at least partially filled with a compound capable of absorbing UV light.
  • the porous metal oxide layer can be provided on at least part of the first surface and/or at least part of the second surface of the light absorbing structure.
  • the porous metal oxide layer can be provided onto the entire first surface only, or on both the entire first surface and the entire second surface.
  • the porous metal oxide layer is provided on the entire first surface and the entire second surface of the light absorbing structure.
  • the compound capable of absorbing UV light can be capable of absorbing a portion of the wavelength range of UV light.
  • the compound can be chosen so that it absorbs UV light in the wavelength range of UV-A only.
  • the compound when the light source emits UV-C light having a wavelength between 100 nm and 280 nm, the compound is advantageously capable of absorbing said UV-C light.
  • the colour as seen by the human eye will be white or close to white (e.g. so-called off-white).
  • the colour will be yellowish.
  • the colour will be blackish.
  • the compound substantially consists of ferric ferrocyanide the colour will be blueish.
  • the compound substantially consists of ferric ammonium oxalate the colour will be a metallic gold.
  • the disinfecting device may further comprise a housing comprising a light exit window.
  • a light exit window is to be interpreted as any area, volume, or material which allow light to pass through it.
  • the housing may be a hermetic housing.
  • the at least one light source, the at least one louver and the at least one optical element (collimator) may be arranged inside the housing.
  • the housing may have any geometrical shape.
  • the housing may be formed as a cuboid, where at least one face of the cuboid may act as a light exit window from where light can be emitted.
  • the housing may further comprise an attachment surface arranged to be positioned on the surface to which the housing is to be attached, such as a ceiling, a floor, a wall, a table, or another suitable surface in a room.
  • Fig. 1 shows a cross-sectional view of a disinfecting device according to the present invention.
  • Fig. 4 shows a cross-sectional view of a further embodiment of the disinfecting device according to the invention.
  • the disinfecting device 1 further comprises a collimator 3 arranged to collimate a part of the UV light emitted from the light source 2 towards the louver 4.
  • the collimator 3 as shown is a reflector.
  • the UV light emitted by the light source 2 will be directed towards the light absorbing structures 5 as a collimated beam comprising predominantly parallel rays of the UV light.
  • the collimated beam of UV light is substantially in plane with the longitudinal extension of the light absorbing structures 5.
  • the compound capable of absorbing UV light is present on substantially the entire first surface 6 and substantially the entire second surface 7 of the light absorbing structure 5. Further, all of the plurality of substantially parallel light absorbing structures 5 comprise the anodized metal part 20 comprising a porous metal oxide layer 21, wherein the pores 22 of the porous metal oxide layer 21 are at least partially filled with the compound 23.
  • the disinfecting device 100 further comprises at least one, and as shown in Fig. 4, a plurality of light converting elements 10 arranged for converting a further portion of the UV light emitted by the light source 2 into a second light having a second wavelength range comprising different wavelengths than the wavelength range of the UV light emitted by the light source 2.
  • the light converting element 10 is arranged for converting a further portion of the UV light emitted by the light source 2 into a second light having a second wavelength range comprising longer wavelengths than the wavelength range of the UV light emitted by the light source 2.
  • the second portion of the first light may preferably be at least 10%, more preferably at least 15%, most preferably at least 20% of the total amount of the first light.

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  • 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)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

La présente invention concerne un dispositif de désinfection (1) comprenant une source de lumière (2) agencée pour émettre, en fonctionnement, une lumière ultraviolette. Le dispositif de désinfection (1) comprend en outre un collimateur (3) agencé pour collimater au moins une partie de la lumière ultraviolette émise par la source de lumière (2) vers une persienne (4). La persienne (4) comprend une pluralité de structures d'absorption de lumière sensiblement parallèles (5) ayant une première surface (6) et une seconde surface opposée (7) à la première surface (6). Les structures d'absorption de lumière (5) ont en outre une extrémité proximale (8) disposée adjacente à la source de lumière (2) et une extrémité distale (9) disposée à l'opposé de l'extrémité proximale (8). Les structures d'absorption de lumière (5) sont agencées pour absorber une première partie (P1) de la lumière ultraviolette. Au moins une structure de la pluralité de structures d'absorption de lumière comprend une partie métallique anodisée (20) comprenant une couche d'oxyde métallique poreuse (21). Les pores (22) de la couche d'oxyde métallique poreuse (21) sont au moins partiellement remplis d'un composé (23) capable d'absorber la lumière ultraviolette.
PCT/EP2023/064917 2022-06-07 2023-06-05 Dispositif de désinfection à durée de vie et sécurité améliorées Ceased WO2023237463A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22177553.9 2022-06-07
EP22177553 2022-06-07

Publications (1)

Publication Number Publication Date
WO2023237463A1 true WO2023237463A1 (fr) 2023-12-14

Family

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Family Applications (1)

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PCT/EP2023/064917 Ceased WO2023237463A1 (fr) 2022-06-07 2023-06-05 Dispositif de désinfection à durée de vie et sécurité améliorées

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Country Link
WO (1) WO2023237463A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001293072A (ja) * 2000-04-15 2001-10-23 Koichi Nakayama 光触媒フィルターの多層化紫外線照射方法
JP2001299881A (ja) * 2000-04-24 2001-10-30 Penta Ocean Constr Co Ltd 脱臭装置
WO2009104119A2 (fr) * 2008-02-20 2009-08-27 Koninklijke Philips Electronics N.V. Système de désinfection, fabrication et utilisation
US20140084185A1 (en) 2012-09-24 2014-03-27 William Palmer Reflector For Ultraviolet Sterilizer Fixture
CN111282012A (zh) * 2020-02-17 2020-06-16 西安交通大学 针对空间上层空气杀菌的人机共存的紫外灯管辐照系统
ES2800350A1 (es) * 2020-07-23 2020-12-29 Garcia Gallardo Sanz Prospero Complemento para emisor de radiacion uvc de doble funcion alternativa de uso combinado
WO2021247116A1 (fr) 2020-06-05 2021-12-09 Case Western Reserve University Système de décontamination
WO2022157193A1 (fr) * 2021-01-25 2022-07-28 Signify Holding B.V. Dispositif d'éclairage de désinfection adaptatif à sécurité améliorée
WO2022223405A1 (fr) * 2021-04-22 2022-10-27 Signify Holding B.V. Dispositif de désinfection à efficacité et sécurité améliorées

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001293072A (ja) * 2000-04-15 2001-10-23 Koichi Nakayama 光触媒フィルターの多層化紫外線照射方法
JP2001299881A (ja) * 2000-04-24 2001-10-30 Penta Ocean Constr Co Ltd 脱臭装置
WO2009104119A2 (fr) * 2008-02-20 2009-08-27 Koninklijke Philips Electronics N.V. Système de désinfection, fabrication et utilisation
US20140084185A1 (en) 2012-09-24 2014-03-27 William Palmer Reflector For Ultraviolet Sterilizer Fixture
CN111282012A (zh) * 2020-02-17 2020-06-16 西安交通大学 针对空间上层空气杀菌的人机共存的紫外灯管辐照系统
WO2021247116A1 (fr) 2020-06-05 2021-12-09 Case Western Reserve University Système de décontamination
ES2800350A1 (es) * 2020-07-23 2020-12-29 Garcia Gallardo Sanz Prospero Complemento para emisor de radiacion uvc de doble funcion alternativa de uso combinado
WO2022157193A1 (fr) * 2021-01-25 2022-07-28 Signify Holding B.V. Dispositif d'éclairage de désinfection adaptatif à sécurité améliorée
WO2022223405A1 (fr) * 2021-04-22 2022-10-27 Signify Holding B.V. Dispositif de désinfection à efficacité et sécurité améliorées

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