WO2022099389A1 - Device for purifying air using uv-c light - Google Patents

Device for purifying air using uv-c light Download PDF

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WO2022099389A1
WO2022099389A1 PCT/BR2020/050470 BR2020050470W WO2022099389A1 WO 2022099389 A1 WO2022099389 A1 WO 2022099389A1 BR 2020050470 W BR2020050470 W BR 2020050470W WO 2022099389 A1 WO2022099389 A1 WO 2022099389A1
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air
light
equipment
exposure
base
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PCT/BR2020/050470
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French (fr)
Portuguese (pt)
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Sandro Roberto GIANNASTASIO
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Giannastasio Sandro Roberto
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Priority to PCT/BR2020/050470 priority Critical patent/WO2022099389A1/en
Publication of WO2022099389A1 publication Critical patent/WO2022099389A1/en

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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
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • 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—Ultra-violet radiation

Definitions

  • the present invention describes an air purification equipment by UV-C light. More specifically, it comprises equipment equipped with an air purifying system with ultraviolet C (UV-C) light designed for exposing the circulating air in a metal box where it is slightly compressed, so that the system relies on the action of UV-light. C and with an ozone (O 3 ) identification sensor.
  • UV-C ultraviolet C
  • O 3 ozone identification sensor
  • the constructive form of the equipment allows flow (contact time), transmittance (light reaching the target) and absence of cloudiness (removal of moisture from the air), so that it does not impose obstacles such as a shadow line, allowing an entire exposure enough air inside the equipment for the elimination of microorganisms in the environments.
  • UV-C Shortwave ultraviolet light
  • UV-C light is weak at the Earth's surface, as the atmosphere's ozone layer blocks it. Some devices can produce strong enough UV-C light along air or water circulation systems to make them inhospitable environments for microorganisms such as bacteria, viruses, fungi and other pathogens.
  • the application of UV-C for disinfection has been an accepted practice since the mid-twentieth century and has been widely used in sanitary, medical and work facilities. Increasingly, it has been used to sterilize drinking water and effluent, as containment facilities are closed off and allowed to circulate to ensure greater exposure to UV rays.
  • UV-C water treatment systems were applied in Austria and Switzerland in 1985. About 1,500 water treatment plants were employed in Europe. In 1998, protozoa such as cryptosporidium and giardia were discovered to be more vulnerable to UV-C light than previously thought, this paved the way for large-scale use of water treatment in North America. In 2001, more than 6,000 UV-C water treatment plants were in operation in Europe.
  • UV light is electromagnetic radiation with a wavelength shorter than visible light, but longer than X-rays.
  • the UV is classified into several wavelength ranges, with those of short wavelength (UV-C) being considered germicidal.
  • Wavelengths between about 200 and 300 nm are strongly absorbed by nucleic acids. The energy absorbed can result in defects, including pyrimidine dimers that can prevent the replication or expression of necessary proteins, resulting in the death or inactivation of the organism,
  • UV-C The effectiveness of UV-C depends on the time a microorganism is exposed to it, the intensity and wavelength of radiation. It is influenced by the presence of particles that can protect microorganisms and their resistance to UV rays during exposure.
  • the degree of inactivation by ultraviolet radiation is directly related to the applied UV-C dose. Dosage is usually measured in microjoules per square centimeter, or equivalent in microwatt seconds per square centimeter ( ⁇ W ⁇ s/cm 2 ). Dosages to kill 90% of microorganisms vary between 2,000 and 8,000 ⁇ W ⁇ s / cm 2.
  • UV-C is again being researched as a possible measure against the COVID-19 pandemic.
  • the present inventor seeking to improve and generate greater efficiency in the decontamination of air through UV light, developed an equipment with its own construction that allows greater flow (contact time), transmittance (light reaching the target) and absence of of cloud cover (removal of moisture from the air), so that it does not impose obstacles such as a shadow line, allowing an entire exposure of air for a sufficient time inside the equipment to eliminate microorganisms in the environments.
  • Air oxidation can be produced by heat, ultraviolet radiation or catalysis. Heating can be done in a block equipped with anodes to dissipate electrostatic charges. After being heated, the air is cooled before be pushed into the storage cabinet. When the air is oxidized by ultraviolet radiation, it is processed by an ozone decomposition system before being admitted to the storage compartment.
  • Document EP1804841 (Schroeder, Werner. 2005) describes a process is disclosed for sterilizing ambient air conducted in an air duct. According to the claimed process, ambient air is supplied to the air duct of a UV unit for irradiation with UV radiation, and the thus pre-purified ambient air is supplied to a downstream ionization unit arranged in the air duct and in which the ambient air is ionized.
  • the document EP1919526 (Desinfinador. 2005) describes a dry disinfection device comprising at least one process chamber, through which air is introduced into the environment.
  • the process chamber comprises a source of ultraviolet radiation for the production of ozone and an ionizing means for ionizing the air.
  • the document EP2100624 (Proair. 2008) describes a dry disinfection device for disinfecting the air, the device comprising at least one process chamber 6 comprising at least one UV radiator 2 arranged to emit at a first wavelength and willing to produce ozone, as well as an ionizer 1 arranged to produce ions in the process chamber.
  • the process chamber 6 also comprises a UV radiator 3 arranged to emit at a second wavelength, the second wavelength being different from the first wavelength.
  • the document DE202019002861 (Kreissl, Jonas. 2019) describes a dry disinfection device for mobile operating devices with UV-C radiation source and processing chamber, characterized in that the dry disinfection device comprises an external housing and an inner housing as a processing chamber, wherein the processing chamber through a first chamber and a second chamber, between which a source of UV-C radiation is arranged, is formed.
  • the present inventor seeking to solve these inconveniences, developed a purifying equipment equipped with an independent unit with shielded UV lamps and with the passage of the air mass horizontally, being equipped with a fan to force the air to pass through the UV-light. C in such a way as to pressurize and move to a filtration system in order to remove dead microorganisms. With pressurized cycling, a longer exposure time of microorganisms to UV-C light is guaranteed, maintaining 99.8% efficiency.
  • the object of the present invention is an equipment equipped with an air purifier system with ultraviolet C (UV-C) light designed for exposing the circulating air in a metal box where it is slightly compressed, so that the The system relies on the action of UV-C light and an ozone (O 3 ) identification sensor.
  • UV-C ultraviolet C
  • O 3 ozone
  • the constructive form of the equipment allows flow (contact time), transmittance (light reaching the target) and absence of cloudiness (removal of moisture from the air), so that it does not impose obstacles such as a shadow line, allowing an entire exposure of the air for enough time inside the equipment for the elimination of microorganisms in the environments.
  • an air purification equipment by UV-C light that provides a base equipped with angled projections arranged at its ends, and the base has a cover provided with angled projections arranged at its ends.
  • an air purification equipment by UV-C light that provides in the central portion of the cover an exhaust fan equipped with a motor and protection grid that directs the ambient air to the interior of the equipment.
  • an air purification equipment by UV-C light that provides, together with the projections of the cover, to be provided with faces that serve as an air exit point and provided with a filtering blanket that serves to remove microorganisms dead in the air mass that has undergone exposure to UV-C light.
  • Figure 1 shows the top perspective view of the assembled purification equipment.
  • Figure 2 shows the front view of the assembled purification equipment.
  • Figure 3 shows the bottom perspective view of the assembled purification equipment.
  • Figure 4 shows the bottom view of the assembled purification equipment.
  • Figure 5 shows the bottom perspective view of the purification equipment, detailing the internal components.
  • Figure 6 shows the bottom view of the purification equipment, detailing the internal components.
  • Figure 7 shows the exploded view of the purification equipment, detailing its components.
  • the UV-C light air purification equipment object of the present invention, comprises a base (10) provided with angled projections (11) arranged at its ends, allowing the air mass to pass horizontally inside the equipment .
  • the base (10) has a cover (20) provided with angled projections (21) arranged at its ends, presenting the same constructive form as the base (10) provided with projections (11) in order to allow the equipment closure.
  • an exhaust fan (22) equipped with a motor (221) and a protection grid (222), allowing the ambient air to be directed into the interior of the equipment in order to force the air to pass through the UV-C light and then be directed to the filtering system arranged at the exit points near the ends of the equipment.
  • the projections (21) of the cover (20) are equipped with faces (21 1) that serve as an air outlet point, so that next to these points is arranged a filtering blanket (212) that serves to remove the dead microorganisms in the air mass that underwent exposure to UV-C light, releasing decontaminated and purified air into the environment.
  • the base (10) there is an electrical panel (12) that manages the set of UV-C light emission lamps (13) and the ozone generation verification sensor (not shown), in so that the air entering the equipment is pressurized for a period between 30 seconds to 1 minute so that it is exposed by the UV-C light and the ozone sensor.
  • the ozone sensor aims to identify whether the lamps can produce ozone during their use, so this reading is a safety system for the equipment.
  • the equipment starts working when it is turned on, keeping the UV-C lamps (13) and the hood always on.
  • the base (10) is equipped on one of its faces with a set of LEDs (14) operating indicators, allowing users to visually check when the equipment is or is not operating in the environment.
  • the pressurization inside the equipment occurs because the air inlet volume generated by the exhaust fan (22) is greater than the outlet volume, due to the restriction generated by the filtering blankets (212).
  • the filters (212) restrict the exit of the air that enters with a positive pressure, generating a pressurization in the system and facilitating the decontamination by the UV-C lamps (13).
  • Klebsiella pneumoniae elimination was achieved after 15 minutes of exposure at cell densities up to 105 and after 10 and 5 minutes of exposure at cell densities up to 103.
  • Bacillus subtilis possibly because it is an endospore-forming bacterium , it was not possible to eliminate in 15 min, but a 99% reduction of the cells.
  • the tests carried out prove the efficiency of the system equipped with a UV-C lamp, together with the compression of the air, promoting the exposure of living organisms and providing the elimination of 99.8% of the germs that pass through the equipment.
  • the constructive form of the equipment allows flow (contact time), transmittance (light reaching the target) and absence of cloudiness (removal of moisture from the air), so that it does not impose obstacles such as a shadow line, allowing an entire exposure of the air for sufficient time inside the equipment to eliminate microorganisms in the environments.

Abstract

The present invention relates to a device for purifying air using UV-C light comprising a device for purifying air using UV-C light that includes a device provided with an air purification system using ultraviolet C (UV-C) light projected onto slightly compressed air flowing through a metal box (10) and (20), enabling the system to provide UV-C action (13) with an O³ identification sensor. The UV-C lamp (13) and the air compression facilitate the exposure of live organisms, eliminating 99.8% of germs passing through the device. The structure of the device facilitates flow (contact time), transmittance (light reaching the target) and an absence of nebulosity (removal of moisture from the air) without creating obstacles such as a shadow line.

Description

EQUIPAMENTO DE PURIFICAÇÃO DE AR POR LUZ UV-C CAMPO DA INVENÇÃO AIR PURIFICATION EQUIPMENT BY UV-C LIGHT FIELD OF THE INVENTION
[01] A presente invenção descreve um equipamento de purificação de ar por luz UV-C. Mais especificamente compreende um equipamento dotado por um sistema purificador de ar com luz ultravioleta C (UV-C) projetado para uma exposição do ar circulante em uma caixa metálica onde é levemente comprimido, de forma que o sistema conta com a ação da luz UV-C e com um sensor de identificação de ozônio (O3). A lâmpada UV-C, juntamente com a pressurização do ar, promove a exposição dos organismos vivos, proporcionando a eliminação de 99,8% dos germes que passam pelo equipamento. [01] The present invention describes an air purification equipment by UV-C light. More specifically, it comprises equipment equipped with an air purifying system with ultraviolet C (UV-C) light designed for exposing the circulating air in a metal box where it is slightly compressed, so that the system relies on the action of UV-light. C and with an ozone (O 3 ) identification sensor. The UV-C lamp, together with the pressurization of the air, promotes the exposure of living organisms, providing the elimination of 99.8% of the germs that pass through the equipment.
[02] A forma construtiva do equipamento permite vazão (tempo de contato), transmitância (luz atingindo o alvo) e ausência de nebulosidade (retirada da umidade do ar), de modo que não impõe obstáculos como linha de sombra, permitindo uma inteira exposição do ar por tempo suficiente dentro do equipamento para a eliminação dos microrganismos nos ambientes. [02] The constructive form of the equipment allows flow (contact time), transmittance (light reaching the target) and absence of cloudiness (removal of moisture from the air), so that it does not impose obstacles such as a shadow line, allowing an entire exposure enough air inside the equipment for the elimination of microorganisms in the environments.
ANTECEDENTES DA INVENÇÃO BACKGROUND OF THE INVENTION
[03] A luz ultravioleta de ondas curtas (UV-C) é utilizada para matar ou inativar microrganismos, destruindo ácidos nucleicos e interrompendo seu DNA ou RNA, deixando-os incapazes de desempenhar funções celulares vitais. É eficaz na purificação de alimentos, ar e água. [03] Shortwave ultraviolet light (UV-C) is used to kill or inactivate microorganisms, destroying nucleic acids and disrupting their DNA or RNA, leaving them unable to perform vital cellular functions. It is effective in purifying food, air and water.
[04] A luz UV-C é fraca na superfície da Terra, uma vez que a camada de ozônio da atmosfera a bloqueia. Alguns dispositivos podem produzir luz UV-C forte o suficiente junto aos sistemas de circulação de ar ou água para torná-los ambientes inóspitos para microrganismos como: bactérias, vírus, fungos e outros patógenos. [05] A aplicação do UV-C para desinfecção é uma prática aceita desde meados do século XX e tem sido muito utilizada em instalações sanitárias, médicas e de trabalho. Cada vez mais, tem sido empregada para esterilizar água potável e efluente, uma vez que as instalações de contenção são fechadas e podem circular para garantir uma maior exposição aos raios UV. [04] UV-C light is weak at the Earth's surface, as the atmosphere's ozone layer blocks it. Some devices can produce strong enough UV-C light along air or water circulation systems to make them inhospitable environments for microorganisms such as bacteria, viruses, fungi and other pathogens. [05] The application of UV-C for disinfection has been an accepted practice since the mid-twentieth century and has been widely used in sanitary, medical and work facilities. Increasingly, it has been used to sterilize drinking water and effluent, as containment facilities are closed off and allowed to circulate to ensure greater exposure to UV rays.
[06] Em 1878, Arthur Downes e Thomas Blunt, publicaram um artigo descrevendo a esterilização de ambientes expostos à luz ultravioleta de ondas curtas. O Prêmio Nobel de Medicina de 1903 foi concedido a Niels Finsen por seu uso de UV no tratamento do lúpus vulgar (tuberculose da pele). [06] In 1878, Arthur Downes and Thomas Blunt published a paper describing the sterilization of environments exposed to shortwave ultraviolet light. The 1903 Nobel Prize in Medicine was awarded to Niels Finsen for his use of UV in the treatment of lupus vulgaris (tuberculosis of the skin).
[07] O uso da luz UV-C para a desinfecção da água potável data de 1910 em Marselha, (França). Os sistemas de tratamento de água por UV-C foram aplicados na Áustria e na Suíça em 1985. Cerca de 1.500 estações de tratamento de água foram empregadas na Europa. Em 1998, descobriu-se que protozoários como o cryptosporidium e a giardia eram mais vulneráveis à luz UV-C do que se pensava anteriormente, isso abriu caminho para o uso em larga escala do tratamento de água na América do Norte. Em 2001 , mais de 6.000 estações de tratamento de água com UV-C estavam em operação na Europa. [07] The use of UV-C light for the disinfection of drinking water dates back to 1910 in Marseille, (France). UV-C water treatment systems were applied in Austria and Switzerland in 1985. About 1,500 water treatment plants were employed in Europe. In 1998, protozoa such as cryptosporidium and giardia were discovered to be more vulnerable to UV-C light than previously thought, this paved the way for large-scale use of water treatment in North America. In 2001, more than 6,000 UV-C water treatment plants were in operation in Europe.
[08] Atualmente vários países desenvolveram regulamentos que permitem que estes sistemas desinfetem seus suprimentos de água potável com luz UV-C. A Agência de Proteção Ambiental dos Estados Unidos (U.S. EPA) publicou um documento fornecendo orientações para a implementação da desinfecção da água potável. [08] Currently, several countries have developed regulations that allow these systems to disinfect their drinking water supplies with UV-C light. The United States Environmental Protection Agency (U.S. EPA) has published a document providing guidelines for implementing the disinfection of drinking water.
[09] A luz UV é uma radiação eletromagnética com comprimento de onda menor que a luz visível, porém maior que os raios-X. O UV é classificado em várias faixas de comprimento de onda, sendo que aqueles de comprimento de onda curta (UV-C), são considerados germicidas. Já comprimentos de onda entre cerca de 200 e 300 nm são fortemente absorvidos pelos ácidos nucleicos. A energia absorvida pode resultar em defeitos, incluindo dímeros de pirimidina que podem impedir a replicação ou a expressão das proteínas necessárias, resultando na morte ou inativação do organismo, [09] UV light is electromagnetic radiation with a wavelength shorter than visible light, but longer than X-rays. The UV is classified into several wavelength ranges, with those of short wavelength (UV-C) being considered germicidal. Wavelengths between about 200 and 300 nm are strongly absorbed by nucleic acids. The energy absorbed can result in defects, including pyrimidine dimers that can prevent the replication or expression of necessary proteins, resulting in the death or inactivation of the organism,
[010] A eficácia do UV-C depende do tempo em que um microrganismo é exposto a ele, da intensidade e comprimento da onda de radiação. É influenciada pela presença de partículas que podem proteger os microrganismos e da resistência destes, aos raios UV durante sua exposição. [010] The effectiveness of UV-C depends on the time a microorganism is exposed to it, the intensity and wavelength of radiation. It is influenced by the presence of particles that can protect microorganisms and their resistance to UV rays during exposure.
[011] Em muitos sistemas, a redundância na exposição de microrganismos à radiação UV-C é alcançada circulando o ar repetidamente. Isso garante várias passagens para que o UV-C seja eficaz contra o maior número de microrganismos e irradie microrganismos resistentes mais de uma vez para decompô-los. [011] In many systems, redundancy in the exposure of microorganisms to UV-C radiation is achieved by circulating the air repeatedly. This ensures multiple passes so that the UV-C is effective against the greatest number of microorganisms and irradiates resistant microorganisms more than once to break them down.
[012] A eficácia dessa forma de desinfecção depende da exposição dos microrganismos à luz UV-C na linha de visão do sistema. [012] The effectiveness of this form of disinfection depends on the exposure of microorganisms to UV-C light in the system's line of sight.
[013] O grau de inativação pela radiação ultravioleta está diretamente relacionado à dose de UV-C aplicada. A dosagem é geralmente medida em microjoules por centímetro quadrado, ou equivalente em microwatt segundos por centímetro quadrado (μW · s / cm 2). As dosagens para matar 90% dos microorganismos, variam entre 2.000 e 8.000 μW · s / cm 2. [013] The degree of inactivation by ultraviolet radiation is directly related to the applied UV-C dose. Dosage is usually measured in microjoules per square centimeter, or equivalent in microwatt seconds per square centimeter (μW·s/cm 2 ). Dosages to kill 90% of microorganisms vary between 2,000 and 8,000 μW · s / cm 2.
[014] Nas décadas de 30 e 40, um experimento em escolas públicas da Filadélfia mostrou que luminárias ultravioletas instaladas no teto das salas de aula poderiam reduzir significativamente a transmissão do sarampo entre os estudantes. Em 2020, o UV-C está novamente sendo pesquisado como uma possível medida contra a pandemia do COVID- 19. [014] In the 1930s and 1940s, an experiment in Philadelphia public schools showed that ultraviolet light fixtures installed on the ceiling of classrooms could significantly reduce transmission of measles among students. In 2020, UV-C is again being researched as a possible measure against the COVID-19 pandemic.
[015] No entanto, a desinfecção é uma função da intensidade e do tempo de exposição ao UV. Por esse motivo, não é tão eficaz no movimento do ar por convecção natural ou quando a lâmpada é perpendicular ao fluxo do ar, pois os tempos de exposição são drasticamente reduzidos, de modo que a simples utilização de uma lâmpada UV em um ambiente não geraria uma descontaminação adequada e eficaz de vírus e bactérias. [015] However, disinfection is a function of the intensity and time of UV exposure. For this reason, it is not as effective in moving air by natural convection or when the lamp is perpendicular to the airflow, as exposure times are drastically reduced, so that simply using a UV lamp in an environment would not generate proper and effective decontamination of viruses and bacteria.
[016] Assim, o presente inventor buscando melhorar e gerar maior eficiência na descontaminação do ar através de luz UV, desenvolveu um equipamento dotado por uma construtividade própria que permite maior vazão (tempo de contato), transmitância (luz atingindo o alvo) e ausência de nebulosidade (retirada da umidade do ar), de modo que não impõe obstáculos como linha de sombra, permitindo uma inteira exposição do ar por tempo suficiente dentro do equipamento para a eliminação dos microrganismos nos ambientes. [016] Thus, the present inventor, seeking to improve and generate greater efficiency in the decontamination of air through UV light, developed an equipment with its own construction that allows greater flow (contact time), transmittance (light reaching the target) and absence of of cloud cover (removal of moisture from the air), so that it does not impose obstacles such as a shadow line, allowing an entire exposure of air for a sufficient time inside the equipment to eliminate microorganisms in the environments.
[017] Em pesquisa realizada no estado da técnica identificamos diversos documentos que descrevem equipamentos destinados a purificação de ambientes através da utilização de luz ultravioleta, onde podemos destacar os seguintes documentos: [017] In research carried out in the state of the art, we identified several documents that describe equipment intended for the purification of environments through the use of ultraviolet light, where we can highlight the following documents:
[018] O documento BRPI90049098 (Clover Eletrônica. 1990) descreve um dispositivo onde o ar oxidado é impelido da câmara de oxidação para o gabinete de armazenamento. A oxidação do ar pode ser produzida por calor, radiação ultravioleta ou catalisação. O aquecimento pode ser feito em bloco dotado de ânodos para dissipação de cargas eletrostáticas. Após ser aquecido, o ar é resfriado antes de ser impelido para o gabinete de armazenamento. Quando o ar é oxidado por radiação ultravioleta, ele é processado por um sistema de decomposição de ozônio antes de ser admitido no compartimento de armazenamento. [018] The document BRPI90049098 (Clover Eletrônica. 1990) describes a device where oxidized air is propelled from the oxidation chamber to the storage cabinet. Air oxidation can be produced by heat, ultraviolet radiation or catalysis. Heating can be done in a block equipped with anodes to dissipate electrostatic charges. After being heated, the air is cooled before be pushed into the storage cabinet. When the air is oxidized by ultraviolet radiation, it is processed by an ozone decomposition system before being admitted to the storage compartment.
[019] O documento EP0778070 (Schroeder, Werner. 1995) descreve hidrocarbonetos gasosos que são removidos do ar expondo-o no canal de duto de ar à radiação UV-C com um comprimento de onda inferior a 300 nm que excita os hidrocarbonetos e, além disso, à radiação UV-C com um comprimento de onda de 185 nm que se forma 03 e radicais. A oxidação parcial das moléculas de hidrocarbonetos ocorre na fase gasosa. [019] The document EP0778070 (Schroeder, Werner. 1995) describes gaseous hydrocarbons that are removed from the air by exposing it in the air duct channel to UV-C radiation with a wavelength of less than 300 nm that excites the hydrocarbons and, in addition, to UV-C radiation with a wavelength of 185 nm which forms 03 and radicals. Partial oxidation of hydrocarbon molecules occurs in the gas phase.
[020] O documento EP1804841 (Schroeder, Werner. 2005) descreve um processo é divulgado para esterilizar o ar ambiente conduzido em um duto de ar. De acordo com o processo reivindicado, o ar ambiente é fornecido ao duto de ar de uma unidade UV para irradiação com radiação UV, e o ar ambiente assim pré-purificado é fornecido a uma unidade de ionização a jusante disposta em na conduta de ar e na qual o ar ambiente é ionizado. [020] Document EP1804841 (Schroeder, Werner. 2005) describes a process is disclosed for sterilizing ambient air conducted in an air duct. According to the claimed process, ambient air is supplied to the air duct of a UV unit for irradiation with UV radiation, and the thus pre-purified ambient air is supplied to a downstream ionization unit arranged in the air duct and in which the ambient air is ionized.
[021] O documento EP1919526 (Desinfinador. 2005) descreve um dispositivo de desinfecção a seco compreendendo pelo menos uma câmara de processo, através da qual o ar é introduzido no ambiente. A câmara de processo compreende uma fonte de radiação ultravioleta para a produção de ozônio e um meio ionizador para ionizar o ar. [021] The document EP1919526 (Desinfinador. 2005) describes a dry disinfection device comprising at least one process chamber, through which air is introduced into the environment. The process chamber comprises a source of ultraviolet radiation for the production of ozone and an ionizing means for ionizing the air.
[022] O documento EP2100624 (Proair. 2008) descreve um dispositivo de desinfecção a seco para desinfetar o ar, o dispositivo compreendendo pelo menos uma câmara de processo 6 que compreende pelo menos um radiador UV 2 disposto para emitir em um primeiro comprimento de onda e disposto para produzir ozônio, bem como um ionizador 1 disposto para produzir ions no câmara de processo. A câmara de processo 6 também compreende um radiador UV 3 disposto para emitir em um segundo comprimento de onda, o segundo comprimento de onda sendo diferente do primeiro comprimento de onda. [022] The document EP2100624 (Proair. 2008) describes a dry disinfection device for disinfecting the air, the device comprising at least one process chamber 6 comprising at least one UV radiator 2 arranged to emit at a first wavelength and willing to produce ozone, as well as an ionizer 1 arranged to produce ions in the process chamber. The process chamber 6 also comprises a UV radiator 3 arranged to emit at a second wavelength, the second wavelength being different from the first wavelength.
[023] O documento DE202019002861 (Kreissl, Jonas. 2019) descreve um dispositivo de desinfecção a seco para dispositivos móveis de operação com fonte de radiação UV-C e câmara de processamento, caracterizado por o dispositivo de desinfecção a seco compreender um invólucro externo e um invólucro interno como processamento câmara, em que a câmara de processamento através de uma primeira câmara e uma segunda câmara, entre as quais uma fonte de radiação UV-C está disposta, é formada. [023] The document DE202019002861 (Kreissl, Jonas. 2019) describes a dry disinfection device for mobile operating devices with UV-C radiation source and processing chamber, characterized in that the dry disinfection device comprises an external housing and an inner housing as a processing chamber, wherein the processing chamber through a first chamber and a second chamber, between which a source of UV-C radiation is arranged, is formed.
[024] Estes documentos citados no estado da técnica descrevem equipamentos destinados a promover a purificação do ar através da utilização de luz ultravioleta, porém estes dispositivos apresentam formas construtivas complexas que apresentam uma baixa eficiência, de modo que se toma necessário circular o ar repetidamente pelo equipamento para promover a purificação, gerando diversos inconvenientes aos usuários e uma ineficácia na descontaminação do ambiente. Além disso, estes equipamentos resultam em lâmpadas UV- C que geram ozônio que é extremamente prejudicial em ambientes fechados. [024] These documents cited in the state of the art describe equipment intended to promote air purification through the use of ultraviolet light, but these devices have complex constructive forms that present a low efficiency, so that it becomes necessary to circulate the air repeatedly through the equipment to promote purification, generating several inconveniences to users and an ineffectiveness in decontaminating the environment. In addition, these devices result in UV-C lamps that generate ozone that is extremely harmful indoors.
[025] Portanto, o presente inventor buscando resolver estes inconvenientes, desenvolveu um equipamento purificador dotado por uma unidade independente com lâmpadas UV blindadas e com passagem da massa de ar horizontalmente, sendo dotado por um ventilador para forçar o ar a passar pela luz UV-C de forma a pressurizar e mover para um sistema de filtragem, a fim de remover os microrganismos mortos. Com a ciclagem pressurizada, garante-se um maior tempo de exposição dos microrganismos a Luz UV-C mantendo 99,8% de eficiência. [025] Therefore, the present inventor, seeking to solve these inconveniences, developed a purifying equipment equipped with an independent unit with shielded UV lamps and with the passage of the air mass horizontally, being equipped with a fan to force the air to pass through the UV-light. C in such a way as to pressurize and move to a filtration system in order to remove dead microorganisms. With pressurized cycling, a longer exposure time of microorganisms to UV-C light is guaranteed, maintaining 99.8% efficiency.
[026] Desta forma, é objeto da presente invenção, um equipamento dotado por um sistema purificador de ar com luz ultravioleta C (UV-C) projetado para uma exposição do ar circulante em uma caixa metálica onde é levemente comprimido, de forma que o sistema conta com a ação da luz UV-C e com um sensor de identificação de ozônio (O3). A lâmpada UV-C, juntamente com a pressurização do ar, promove a exposição dos organismos vivos, proporcionando a eliminação de 99,8% dos germes que passam pelo equipamento. A forma construtiva do equipamento permite vazão (tempo de contato), transmitância (luz atingindo o alvo) e ausência de nebulosidade (retirada da umidade do ar), de modo que não impõe obstáculos como linha de sombra, permitindo uma Inteira exposição do ar por tempo suficiente dentro do equipamento para a eliminação dos microrganismos nos ambientes.[026] Thus, the object of the present invention is an equipment equipped with an air purifier system with ultraviolet C (UV-C) light designed for exposing the circulating air in a metal box where it is slightly compressed, so that the The system relies on the action of UV-C light and an ozone (O 3 ) identification sensor. The UV-C lamp, together with the pressurization of the air, promotes the exposure of living organisms, providing the elimination of 99.8% of the germs that pass through the equipment. The constructive form of the equipment allows flow (contact time), transmittance (light reaching the target) and absence of cloudiness (removal of moisture from the air), so that it does not impose obstacles such as a shadow line, allowing an entire exposure of the air for enough time inside the equipment for the elimination of microorganisms in the environments.
SUMÁRIO DA INVENÇÃO SUMMARY OF THE INVENTION
[027] É característica da presente invenção um equipamento de purificação de ar por luz UV-C que provê uma base dotada por projeções anguladas dispostas em suas extremidades, sendo que a base apresenta a disposição de uma tampa dotada por projeções anguladas dispostas em suas extremidades. [027] It is characteristic of the present invention an air purification equipment by UV-C light that provides a base equipped with angled projections arranged at its ends, and the base has a cover provided with angled projections arranged at its ends. .
[028] É característica da presente invenção um equipamento de purificação de ar por luz UV-C que provê na porção central da tampa é disposto exaustor dotado por motor e grade de proteção que direciona o ar do ambiente para o interior do equipamento. [029] É característica da presente invenção um equipamento de purificação de ar por luz UV-C que provê junto as projeções da tampa serem dotadas por faces que servem como ponto de saída do ar e dotadas por uma manta filtrante que serve para remover os microrganismos mortos na massa de ar que passou pela exposição na luz UV-C. [028] It is characteristic of the present invention an air purification equipment by UV-C light that provides in the central portion of the cover an exhaust fan equipped with a motor and protection grid that directs the ambient air to the interior of the equipment. [029] It is characteristic of the present invention an air purification equipment by UV-C light that provides, together with the projections of the cover, to be provided with faces that serve as an air exit point and provided with a filtering blanket that serves to remove microorganisms dead in the air mass that has undergone exposure to UV-C light.
[030] É característica da presente invenção um equipamento de purificação de ar por luz UV-C que provê na porção interna da base um quadro elétrico que gerencia o conjunto de lâmpadas de emissão da luz UV-C e o sensor de identificação de ozônio. [030] It is characteristic of the present invention an air purification equipment by UV-C light that provides in the internal portion of the base an electrical panel that manages the set of UV-C light emission lamps and the ozone identification sensor.
[031] É característica da presente invenção um equipamento de purificação de ar por luz UV-C que provê que a pressurização dentro do equipamento ocorre pelo o volume de entrada de ar gerado pelo exaustor ser maior que o volume de saída, devido a restrição gerada pelas mantas filtrantes. [031] It is characteristic of the present invention an air purification equipment by UV-C light that provides that the pressurization inside the equipment occurs because the air inlet volume generated by the exhaust is greater than the outlet volume, due to the restriction generated through the filter pads.
BREVE DESCRIÇÃO DAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
[032] A figura 1 apresenta a vista em perspectiva superior do equipamento de purificação montado. [032] Figure 1 shows the top perspective view of the assembled purification equipment.
[033] A figura 2 apresenta a vista frontal do equipamento de purificação montado. [033] Figure 2 shows the front view of the assembled purification equipment.
[034] A figura 3 apresenta a vista em perspectiva inferior do equipamento de purificação montado. [034] Figure 3 shows the bottom perspective view of the assembled purification equipment.
[035] A figura 4 apresenta a vista inferior do equipamento de purificação montado. [035] Figure 4 shows the bottom view of the assembled purification equipment.
[036] A figura 5 apresenta a vista em perspectiva inferior do equipamento de purificação, detalhando os componentes internos. [036] Figure 5 shows the bottom perspective view of the purification equipment, detailing the internal components.
[037] A figura 6 apresenta a vista inferior do equipamento de purificação, detalhando os componentes internos. [038] A figura 7 apresenta a vista explodida do equipamento de purificação, detalhando seus componentes. [037] Figure 6 shows the bottom view of the purification equipment, detailing the internal components. [038] Figure 7 shows the exploded view of the purification equipment, detailing its components.
DESCRIÇÃO DA INVENÇÃO DESCRIPTION OF THE INVENTION
[039] O equipamento de purificação de ar por luz UV-C, objeto da presente invenção, compreende uma base (10) dotada por projeções anguladas (11) dispostas em suas extremidades, permitindo a passagem da massa de ar horizontalmente por dentro do equipamento. [040] A base (10) apresenta a disposição de uma tampa (20) dotada por projeções anguladas (21) dispostas em suas extremidades, apresentando a mesma forma construtiva da base (10) dotada por projeções (11) de forma a permitir o fechamento do equipamento. [039] The UV-C light air purification equipment, object of the present invention, comprises a base (10) provided with angled projections (11) arranged at its ends, allowing the air mass to pass horizontally inside the equipment . [040] The base (10) has a cover (20) provided with angled projections (21) arranged at its ends, presenting the same constructive form as the base (10) provided with projections (11) in order to allow the equipment closure.
[041] Na porção central da tampa (20) é disposto exaustor (22) dotado por motor (221) e grade de proteção (222), permitindo que o ar do ambiente seja direcionado para o interior do equipamento de forma a forçar o ar a passar pela luz UV-C e posteriormente seja direcionado para o sistema de filtragem dispostos nos pontos de saída junto as extremidades do equipamento. [041] In the central portion of the cover (20) there is an exhaust fan (22) equipped with a motor (221) and a protection grid (222), allowing the ambient air to be directed into the interior of the equipment in order to force the air to pass through the UV-C light and then be directed to the filtering system arranged at the exit points near the ends of the equipment.
[042] As projeções (21) da tampa (20) são dotadas por faces (21 1) que servem como ponto de saída do ar, de modo que junto a estes pontos é disposta uma manta filtrante (212) que serve para remover os microrganismos mortos na massa de ar que passou pela exposição na luz UV-C, liberando no ambiente um ar descontaminado e purificado. [042] The projections (21) of the cover (20) are equipped with faces (21 1) that serve as an air outlet point, so that next to these points is arranged a filtering blanket (212) that serves to remove the dead microorganisms in the air mass that underwent exposure to UV-C light, releasing decontaminated and purified air into the environment.
[043] Na porção interna da base (10) é disposto um quadro elétrico (12) que gerencia o conjunto de lâmpadas de emissão da luz UV-C (13) e o sensor de verificação da geração de ozônio (não representado), de modo que o ar ao entrar no equipamento fica pressurizado por um período entre 30 segundos a 1 minuto de forma a fica exposto pela luz UV-C e ao sensor de ozônio. [044] O sensor de ozônio tem por objetivo identificar se as lâmpadas possam produzir ozônio no decorrer de seu uso, de modo que esta leitura é um sistema de segurança do equipamento. [043] In the inner portion of the base (10) there is an electrical panel (12) that manages the set of UV-C light emission lamps (13) and the ozone generation verification sensor (not shown), in so that the air entering the equipment is pressurized for a period between 30 seconds to 1 minute so that it is exposed by the UV-C light and the ozone sensor. [044] The ozone sensor aims to identify whether the lamps can produce ozone during their use, so this reading is a safety system for the equipment.
[045] O equipamento entra em funcionamento quando é ligado, mantendo as lâmpadas de UV-C (13) e o exaustor sempre ligados. [045] The equipment starts working when it is turned on, keeping the UV-C lamps (13) and the hood always on.
[046] O equipamento quando montado pela tampa (20), encaixada junto a base (10), permite que a massa de ar do ambiente seja forçada a entrar devido a ação do exaustor (22) de forma que o ar ao ingressar é exposto ao conjunto de lâmpadas UV-C (13) e após é direcionado para o sistema de retenção de partículas dotado pela manta (212). [046] The equipment when mounted by the cover (20), fitted with the base (10), allows the air mass of the environment to be forced in due to the action of the exhaust fan (22) so that the air entering is exposed to the set of UV-C lamps (13) and then it is directed to the particle retention system provided by the blanket (212).
[047] A base (10) é dotada em uma de suas faces por um conjunto de LED’s (14) indicadores de funcionamento, permitindo que os usuários possam verificar visualmente quando o equipamento esta ou não em funcionamento no ambiente. [047] The base (10) is equipped on one of its faces with a set of LEDs (14) operating indicators, allowing users to visually check when the equipment is or is not operating in the environment.
[048] A pressurização dentro do equipamento ocorre pelo o volume de entrada de ar gerado pelo exaustor (22) ser maior que o volume de saída, devido a restrição gerada pelas mantas filtrantes (212). Assim, os filtros (212) restringem a saída do ar que ingressa com uma pressão positiva, gerando uma pressurização no sistema e facilitando a descontaminação pelas lâmpadas de UV-C (13). [048] The pressurization inside the equipment occurs because the air inlet volume generated by the exhaust fan (22) is greater than the outlet volume, due to the restriction generated by the filtering blankets (212). Thus, the filters (212) restrict the exit of the air that enters with a positive pressure, generating a pressurization in the system and facilitating the decontamination by the UV-C lamps (13).
TESTES DE LABORATÓRIO LABORATORY TESTS
[049] O equipamento foi testado em laboratório para verificar sua eficiência perante a duas amostras de bactérias: escherichia coli e staphylococcus aureus. [049] The equipment was tested in the laboratory to verify its efficiency against two samples of bacteria: escherichia coli and staphylococcus aureus.
[050] Cada amostra testada foi aplicada em quantidades e por tempos diferentes, de modo que foram aplicadas em tempos de 1 , 5, 10 e 15 minutos de exposição junto ao equipamento.
Figure imgf000013_0001
Figure imgf000013_0002
Figure imgf000013_0003
[051] O percentual de redução bacteriana após exposição à radiação UV-C integrada ao purificador de variou de acordo com o tempo de exposição e com a densidade celular bacteriana. Em Staphylococcus aureus, a eliminação foi alcançada após 10 minutos de exposição de densidades celulares de até 103. Em Escherichia coli e Acinetobacter baumannii a eliminação foi alcançada após 15 minutos de exposição de densidades celulares de até 104 e após 10 minutos de exposição de densidades celulares de até 103. Em Klebsiella pneumoniae, a eliminação foi alcançada após 15 minutos de exposição de densidades celulares de até 105 e após 10 e 5 minutos de exposição de densidades celulares de até 103. Em Bacillus subtllis, possivelmente por ser uma bactéria formadora de endósporos, não foi possível a eliminação em 15 min, mas uma redução de 99% das células. [050] Each sample tested was applied in different amounts and for different times, so that they were applied at times of 1, 5, 10 and 15 minutes of exposure next to the equipment.
Figure imgf000013_0001
Figure imgf000013_0002
Figure imgf000013_0003
[051] The percentage of bacterial reduction after exposure to UV-C radiation integrated into the purifier varied according to exposure time and bacterial cell density. In Staphylococcus aureus, elimination was achieved after 10 minutes of exposure at cell densities up to 103. In Escherichia coli and Acinetobacter baumannii, elimination was achieved after 15 minutes of exposure at cell densities up to 104 and after 10 minutes of exposure at cell densities up to 103. In Klebsiella pneumoniae, elimination was achieved after 15 minutes of exposure at cell densities up to 105 and after 10 and 5 minutes of exposure at cell densities up to 103. In Bacillus subtilis, possibly because it is an endospore-forming bacterium , it was not possible to eliminate in 15 min, but a 99% reduction of the cells.
[052] Desta forma, os testes realizados comprovam a eficiência do sistema dotado por lâmpada UV-C, juntamente com a compressão do ar, promovendo a exposição dos organismos vivos e proporcionando a eliminação de 99,8% dos germes que passam pelo equipamento. Assim, a forma construtiva do equipamento permite vazão (tempo de contato), transmitância (luz atingindo o alvo) e ausência de nebulosidade (retirada da umidade do ar), de modo que não impõe obstáculos como linha de sombra, permitindo uma inteira exposição do ar por tempo suficiente dentro do equipamento para a eliminação dos microrganismos nos ambientes. [052] In this way, the tests carried out prove the efficiency of the system equipped with a UV-C lamp, together with the compression of the air, promoting the exposure of living organisms and providing the elimination of 99.8% of the germs that pass through the equipment. Thus, the constructive form of the equipment allows flow (contact time), transmittance (light reaching the target) and absence of cloudiness (removal of moisture from the air), so that it does not impose obstacles such as a shadow line, allowing an entire exposure of the air for sufficient time inside the equipment to eliminate microorganisms in the environments.

Claims

REIVINDICAÇÕES
1. EQUIPAMENTO DE PURIFICAÇÃO DE AR POR LUZ UV-C caracterizado por compreender uma base (10) dotada por projeções anguladas (11) dispostas em suas extremidades, sendo que a base (10) apresenta a disposição de uma tampa (20) dotada por projeções anguladas (21) dispostas em suas extremidades e na porção central da tampa (20) é disposto exaustor (22) dotado por motor (221) e grade de proteção (222) que direciona o ar do ambiente para o interior do equipamento, as ditas projeções (21) da tampa (20) são dotadas por faces (211) que servem como ponto de saída do ar e dotadas por uma manta filtrante (212) que serve para remover os microrganismos mortos na massa de ar que passou pela exposição na luz UV-C; na porção interna da base (10) é disposto um quadro elétrico (12) que gerencia o conjunto de lâmpadas de emissão da luz UV-C (13) e o sensor de identificação de ozônio; a pressurização dentro do equipamento ocorre peio o volume de entrada de ar gerado pelo exaustor (22) ser maior que o volume de saída, devido a restrição gerada pelas mantas filtrantes (212). 1. UV-C LIGHT AIR PURIFICATION EQUIPMENT characterized in that it comprises a base (10) provided with angled projections (11) arranged at its ends, the base (10) having a cover (20) provided with angled projections (21) arranged at their ends and in the central portion of the cover (20) there is an exhaust fan (22) equipped with a motor (221) and a protection grid (222) that directs the ambient air to the interior of the equipment, the said projections (21) of the cover (20) are provided with faces (211) that serve as an air outlet point and provided with a filtering blanket (212) that serves to remove dead microorganisms in the air mass that has passed through the exposure in the UV-C light; in the inner portion of the base (10) there is an electrical panel (12) that manages the set of UV-C light emission lamps (13) and the ozone identification sensor; pressurization inside the equipment occurs because the air inlet volume generated by the exhaust (22) is greater than the outlet volume, due to the restriction generated by the filtering blankets (212).
2. EQUIPAMENTO DE PURIFICAÇÃO DE AR POR LUZ UV-C, de acordo com a reivindicação 1 , caracterizado por o ar ao entrar no equipamento ficar pressurizado por um período entre 30 segundos a 1 minuto, de forma a fica exposto pela luz UV-C (13). 2. UV-C LIGHT AIR PURIFICATION EQUIPMENT, according to claim 1, characterized in that the air entering the equipment is pressurized for a period between 30 seconds to 1 minute, so that it is exposed by the UV-C light (13).
3. EQUIPAMENTO DE PURIFICAÇÃO DE AR POR LUZ UV-C, de acordo com qualquer uma das reivindicações anteriores, caracterizado por o equipamento manter as lâmpadas de UV-C (13) e o exaustor (22) sempre ligados. EQUIPAMENTO DE PURIFICAÇÃO DE AR POR LUZ UV-C, de acordo com qualquer uma das reivindicações anteriores, caracterizado por a base (10) ser dotada em uma de suas faces por um conjunto de LED’s (14) indicadores de funcionamento. 3. EQUIPMENT FOR AIR PURIFICATION BY UV-C LIGHT, according to any one of the preceding claims, characterized in that the equipment keeps the UV-C lamps (13) and the hood (22) always on. UV-C LIGHT AIR PURIFICATION EQUIPMENT, according to any one of the preceding claims, characterized in that the base (10) is provided on one of its faces by a set of LEDs (14) operating indicators.
PCT/BR2020/050470 2020-11-12 2020-11-12 Device for purifying air using uv-c light WO2022099389A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017634A1 (en) * 1993-12-22 1995-06-29 Klean A/S Cleaning arrangement including filters and ultraviolet radiation
US20060177356A1 (en) * 2005-02-08 2006-08-10 Miller Gregory R Positive pressure air purification and conditioning system
WO2012068569A1 (en) * 2010-11-18 2012-05-24 Oy Halton Group Ltd. Air purification devices methods and systems
WO2020113149A1 (en) * 2018-11-28 2020-06-04 Gold Mine Ideas, Llc Uv pathogen control device and system
US20200324012A1 (en) * 2018-01-15 2020-10-15 PetAirapy LLC Air treatment unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017634A1 (en) * 1993-12-22 1995-06-29 Klean A/S Cleaning arrangement including filters and ultraviolet radiation
US20060177356A1 (en) * 2005-02-08 2006-08-10 Miller Gregory R Positive pressure air purification and conditioning system
WO2012068569A1 (en) * 2010-11-18 2012-05-24 Oy Halton Group Ltd. Air purification devices methods and systems
US20200324012A1 (en) * 2018-01-15 2020-10-15 PetAirapy LLC Air treatment unit
WO2020113149A1 (en) * 2018-11-28 2020-06-04 Gold Mine Ideas, Llc Uv pathogen control device and system

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