WO2023286219A1 - 空気清浄機及び感染防止用清浄化ブース - Google Patents
空気清浄機及び感染防止用清浄化ブース Download PDFInfo
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- WO2023286219A1 WO2023286219A1 PCT/JP2021/026514 JP2021026514W WO2023286219A1 WO 2023286219 A1 WO2023286219 A1 WO 2023286219A1 JP 2021026514 W JP2021026514 W JP 2021026514W WO 2023286219 A1 WO2023286219 A1 WO 2023286219A1
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- 208000015181 infectious disease Diseases 0.000 title claims abstract description 19
- 238000000746 purification Methods 0.000 title abstract description 3
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- 238000010992 reflux Methods 0.000 claims abstract description 22
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- 230000002265 prevention Effects 0.000 claims description 4
- 230000003197 catalytic effect Effects 0.000 abstract 1
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- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
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Images
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
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultraviolet radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- 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—Ultraviolet radiation
- A61L9/205—Ultraviolet radiation using a photocatalyst or photosensitiser
-
- 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
- A61L2209/14—Filtering means
-
- 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
- A61L2209/16—Connections to a HVAC unit
Definitions
- the present invention relates to an air purifier and a cleaning booth for infection prevention using the same.
- one type of conventional air purifier sterilizes with ozone or ultraviolet light, or a combination thereof, and then filters and releases the air as is.
- Each wavelength has its own characteristics, but generally speaking, the shorter the wavelength, the greater the energy that destroys genes.
- light with a wavelength of 185 nm has the effect of destroying viruses and bacteria in a few seconds. .
- DNA and RNA which are the nucleic acids that make up the genes of viruses and bacteria, exhibit the highest absorption characteristics around a wavelength of 260 nm.
- a low-pressure mercury lamp has a high emission spectrum near a wavelength of 254 nm. Using this characteristic, when the target is a bacterium, it is irradiated with a low-pressure mercury lamp to destroy the cell membrane of the bacterium and let the body fluid flow out to kill it, and when the target is a virus, the virus It is performed to prevent proliferation by decomposing the genetic information of DNA and RNA possessed by.
- Patent Literature 1 discloses a technique of irradiating the human body with ultraviolet rays having a wavelength of 200 nm or more and 230 nm or less for disinfection.
- Short-wave ultraviolet rays have the aspect of "sterilization", but at the same time, ultraviolet rays react with oxygen in the air and generate ozone, which is harmful to the human body. Reaction between ozone and ultraviolet rays with a wavelength of 100 to 260 nm generates active oxygen, which decomposes polluting organic substances with a strong oxidizing action. Ozone has an oxidizing power several times that of chlorine, and has a strong oxidizing power. And, because of this strong oxidizing power, it degrades most substances.
- Ozone has a strong ability to oxidize things, second only to fluorine and several times better than chlorine, and is used for sterilization, disinfection, deodorization, etc.
- high-concentration ozone causes deterioration of rubber and plastics, and also damages living organisms.
- Ozone is not easily absorbed by water, so if it is taken into the respiratory system, it may reach deep into the lungs and cause respiratory disorders (pulmonary edema, etc.).
- Patent Literature 2 discloses a technique for decomposing ozone generated by using ultraviolet rays.
- the wavelength of ultraviolet rays used is 200 nm or more, and short-wave ultraviolet rays in the 185 nm wavelength range are excluded.
- the ozonolysis technology of Patent Document 2 is mainly aimed at improving the deodorizing performance, and there is room for further improvement in order to use it, for example, in an air purifier that provides sterilized air.
- the present invention has been made in view of the above problems, and an air purifier and a cleaning booth for preventing infection that can effectively suppress the generation of ozone while sterilizing the air using ultraviolet rays of relatively short wavelengths. intended to provide
- the air cleaner of the present invention a housing in which a recirculation chamber is formed between an intake opening and an exhaust opening; an ultraviolet irradiation device for simultaneously generating ultraviolet rays with a wavelength of 185 nm and ultraviolet rays with a wavelength of 254 nm in the reflux chamber; an ozone decomposition member through which air passes from the recirculation chamber toward the exhaust opening; a recirculation plate disposed in the recirculation chamber that hits and recirculates a portion of the air flowing from the intake opening toward the exhaust opening;
- the ultraviolet rays irradiated from the ultraviolet irradiation device are characterized in that both the air directed toward the return flow plate from the intake opening and the air returned from the return flow plate are irradiated with the ultraviolet light.
- an air purifier and an infection-preventing purifying booth that can effectively suppress the generation of ozone while sterilizing the air using relatively short-wavelength ultraviolet rays.
- FIG. 1 is a perspective view of the air purifier according to the first embodiment of the present invention seen from obliquely above, and arrows indicate the air flow.
- FIG. 2 is a longitudinal sectional view of the air purifier according to the second embodiment of the present invention, in which arrows indicate the flow of air.
- FIG. 3 is a diagram showing an infection-preventing purification booth in which the air purifier according to the embodiment of the present invention is combined as an intake device and an exhaust device for an isolation booth.
- FIG. 4 is a longitudinal sectional view of the air purifier according to the second embodiment, in which arrows indicate the flow of air.
- Air purifier> 1 and 2 are a schematic perspective view and longitudinal sectional view, respectively, showing an air cleaner 1 of a first embodiment.
- a housing 10 whose bottom surface is supported by casters 10a has an air intake opening 11 on its back surface and an exhaust opening 12 on its top surface.
- the periphery of the exhaust opening 12 is surrounded by an exhaust pipe 13, and a manganese dioxide catalyst filter 25 as an ozone decomposing member is arranged inside the exhaust opening 12.
- a manganese dioxide catalyst filter 25 as an ozone decomposing member is arranged inside the exhaust opening 12.
- a shielding plate 14 is arranged with respect to the intake opening 11 to prevent relatively large foreign objects from being sucked. Furthermore, the intake opening 11 is covered by a prefilter 15 with a mesh.
- Fiber products such as polypropylene, polyvinylidene chloride, polyester, and nylon can be used as the material of the pre-filter 15 here.
- the purpose of installing the pre-filter 15 is to first collect coarse particles floating in the air.
- the interior of the housing 10 is partitioned by a partition plate 16 into an intake opening 11 side and an exhaust opening 12 side.
- a chamber on the exhaust opening 12 side partitioned by 16 is referred to as a recirculation chamber CC.
- the volume of the reflux chamber CC is larger than the volume of the suction chamber SC.
- the partition plate 16 is formed with a communication hole 16a that communicates the suction chamber SC and the reflux chamber CC.
- a HEPA filter 17 is arranged in the vicinity of the air intake opening 11 in the suction chamber SC so that the air entering through the air intake opening 11 can pass through.
- ethylene propylene diene rubber, silicone rubber, fluorine rubber, etc. can be used as packing to prevent air leakage.
- a fan 18 driven by a motor 19 is arranged in the suction chamber SC in the vicinity of the communication hole 16 a of the partition plate 16 .
- the motor 19 is connected to a power supply (not shown).
- Various types such as an axial type and a centrifugal type are used for the fan 18 .
- a current plate 20 is attached to the partition plate 16 so as to surround the communication hole 16a.
- the straightening plate 20 is formed, for example, by press-molding a metal plate, and has a pair of fan-shaped side plates 20a extending from both sides of the communication hole 16a and a curved plate 20b connecting the fan-shaped side plates 20a.
- the upper side of the current plate 20 is open.
- the rectifying plate 20 does not necessarily have to surround the communicating hole 16a, and instead of the fan-shaped side plate 20a and the curved plate 20b, a simple plate-like structure can be used to deflect the air upward.
- a current plate may be provided, for example, at the position of the curved plate 20b. Furthermore, if it is possible to convect the air in the reflux chamber CC, the current plate 20 may not be provided.
- a holding plate 21 extends downward from the upper wall of the housing 10, and a control circuit 22 is arranged between the holding plate 21 and the rear surface of the housing 10. .
- the control circuit 22 is connected to a power supply (not shown), and can drive and control an ultraviolet lamp (ultraviolet irradiation device) 23 exposed on the reflux chamber CC side of the holding plate 21 to emit light.
- the ultraviolet lamp 23 can simultaneously emit light having a wavelength of 185 nm and a wavelength of 254 nm.
- a circulation plate 24 is arranged between the ultraviolet lamp 23 and the exhaust opening 12 so as to be spaced apart from the upper wall of the housing 10 and extend parallel to the upper wall.
- a clearance CL is formed between the circulation plate 24 and the inner periphery of the housing 10 .
- the circulation plate 24 covers the entire exhaust opening 12 when viewed in the axial direction of the exhaust opening 12 (vertical direction in FIG. 2).
- the air purifier 1 of the present embodiment is placed and used indoors, for example, but the usage environment is not particularly limited.
- the air taken into the suction chamber SC enters the circulation chamber CC through the communication hole 16a of the partition plate 16 and flows toward the circulation plate 24 above.
- the air flowing from the communication hole 16a passes near the ultraviolet lamp 23 and reaches the circulation plate 24 while reducing the flow velocity by entering the circulation chamber CC having a relatively large capacity.
- the contaminant aerosols and droplet nuclei that are not captured by the HEPA filter 17 are damaged and destroyed at the genetic level within a few seconds by the ultraviolet rays emitted from the ultraviolet lamp 23 (Shoichi Morimoto, "By Airflow Control Airborne Infection Risk Reduction", Clinical Environmental Medicine, Vol. 27, No.
- the ultraviolet lamp 23 is hermetically mounted in the housing 10, the ultraviolet rays do not leak out and come into contact with human eyes.
- the ultraviolet rays with a wavelength of 185 nm emitted from the ultraviolet lamp 23 contribute to the generation of ozone. More specifically, when oxygen molecules absorb photons with a wavelength of 185 nm, they dissociate into oxygen atoms (active oxygen) as shown in Equation 1 below, and the oxygen atoms bond with oxygen molecules to generate ozone.
- oxygen atoms active oxygen
- ozone Even if the ozone is completely sealed at normal temperature, it will be reduced to less than half in one day, and will eventually be reduced to the original oxygen. However, if the human body inhales ozone-containing air, even if it is just for a short time, it will come into contact with the nasal cavity, throat, trachea, lungs, etc., and the surface will be oxidized, causing odor, irritation, cough, headache, drowsiness, Symptoms such as chest tightness may occur. In order to prevent the damage caused by the toxicity of ozone, in Japan, the Occupational Health Society Occupational Health Association Allowable Concentration Committee sets the allowable concentration of ozone in the working environment to 0.1 ppm.
- the air purifier 1 of this embodiment includes a manganese dioxide catalyst filter 25 . More specifically, the ozone-containing air that passes through the circulation plate 24 and the inner periphery of the housing 10 and the gap CL toward the exhaust opening 12 passes through the manganese dioxide-based catalyst filter 25, whereupon the ozone is decomposed. be.
- activated carbon As a method for removing ozone, activated carbon has conventionally been used simply. Ozone is adsorbed and reacted within the pores of activated carbon, and decomposed into carbon dioxide and water. Activated carbon is relatively easy to manage, but has the problem of being difficult to use because it produces an exothermic reaction as shown in Equation 2 below. (Formula 2) C (activated carbon) + 2O 3 ⁇ CO 2 + 2O 2 + 679 kJ
- the manganese dioxide-based catalyst filter 25 can be a product obtained by sintering the powder into a pellet, a honeycomb-like molding, a honeycomb-like material, or a fibrous base material supported on the material.
- FIG. 4 is a cross-sectional view of the air purifier of the second embodiment.
- the ultraviolet lamp 23 is installed vertically along the air flow path in the apparatus, thereby increasing the irradiation time of the ultraviolet rays to the air and enhancing the sterilization effect. can be enhanced.
- the horizontally installed ultraviolet lamp 23 as shown in the first embodiment may be used together, or may not be used together.
- the sterilization effect can be further enhanced by using both a horizontally installed ultraviolet lamp and a vertically installed ultraviolet lamp.
- the sterilization effect can be enhanced by generating ultraviolet rays with a wavelength of 254 nm from the ultraviolet lamp 23 installed vertically.
- can it is possible to generate both ultraviolet rays with a wavelength of 185 nm and ultraviolet rays with a wavelength of 254 nm from both a horizontally installed ultraviolet lamp and a vertically installed ultraviolet lamp.
- the number of ultraviolet lamps installed vertically may be one, or a plurality of ultraviolet lamps may be arranged in parallel.
- by mounting the rectifying plate 20 downward it is possible to efficiently generate air convection without using the return plate 24 employed in the first embodiment. , it is possible to make maximum use of the UV lamp.
- a reflecting member may be provided inside the housing.
- the reflective member need not be an independent member used only for reflection, and can be installed by forming a reflective film on the surface of the inner wall of the housing, the current plate, or the like.
- the air purifier 1 can be used, for example, to supply air to a simple booth 30 for isolating infected persons that forms a certain space. It can be used as a device or an exhaust device.
- the air purifier 1 described above is combined with the simple booth 30 as an exhaust device, it is possible to purify the air discharged from the simple booth 30 to the atmosphere by a similar effect. By doing so, it is possible to detoxify the viruses in the air flowing out of the simple booth 30 and then exhaust them into the atmosphere.
- an ozone sensor 31 that detects an ozone concentration of 0.1 ppm or more and issues an alarm in case of trouble such as clogging of the manganese dioxide catalyst filter 25 of the air purifier 1. is preferably installed in the simple booth 30.
- this embodiment it is possible to purify harmful components present in the room (inside the simple booth) with short-wave ultraviolet rays, and to detoxify ozone that is generated by ultraviolet rays and is harmful to the human body.
- By adopting a push-pull arrangement it is possible to create a unidirectional flow in the room (inside the simple booth) and efficiently remove harmful components. It also has the advantage of not exposing the human body to harmful ultraviolet rays and ozone.
- the air purifier 1 of the present embodiment was installed in the simple booth 30, and after operating for 60 minutes, the number of particles inside and outside the simple booth 30 was measured with a RION Handheld Particle Counter KC-51 manufactured by Rion Co., Ltd. Meanwhile, the measurement results shown in Table 1 below were obtained.
- the simple booth 30 was set up in a general office. Further, in the arrangement example of FIG. 3, it was confirmed with an anemometer that the air volume on the suction side of the air purifier 1 in the simple booth 30 was 135 m 3 /hr or more.
- Air cleaner 10 Housing 11 Intake opening 12 Exhaust opening 13 Exhaust cylinder 14 Shielding plate 15 Pre-filter 16 Partition plate 17 HEPA filter 18 Fan 19 Motor 20 Current plate 21 Holding plate 22 Control circuit 23 Ultraviolet lamp 24 Reflux plate 25 Manganese dioxide System catalyst filter 30 Simple booth 31 Ozone sensor CC Reflux chamber SC Suction chamber CL Gap
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- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
Description
特に、感染者が治療を受けている医療現場や感染者が滞在しているホテルなどにおいては、感染が医従事者や関係者に拡大しないように措置を講じることが喫緊の課題となっている。
吸気開口と排気開口との間に還流室を形成した筐体と、
前記還流室内において、波長185nmの紫外線と波長254nmの紫外線を同時に発生する紫外線照射装置と、
前記還流室から前記排気開口に向かう空気が通過するオゾン分解部材と、
前記還流室内に配置され、前記吸気開口から前記排気開口に向かって流れる空気の一部に当たり、還流させる還流板と、を有し、
前記紫外線照射装置から照射された紫外線は、前記吸気開口から前記還流板に向かう空気と、前記還流板から還流される空気の双方に照射される、ことを特徴とする。
図1及び図2は、それぞれ第1の実施形態の空気清浄機1を示す模式的な斜視図及び縦断面図である。図において、キャスター10aによって下面を支持された筐体10は、背面に吸気開口11を備え、上面に排気開口12を備えている。排気開口12の周囲は、排気筒13によって囲われており、排気開口12の内部には、オゾン分解部材としての二酸化マンガン系触媒フィルタ25が配置されている。
なお、整流板20は、必ずしも連通穴16aを囲うように設ける必要はなく、扇状側板20a、湾曲板20bの構成に代えて、空気を上方に偏向させることができるように、単純な板状の整流板を、例えば湾曲板20bの位置に設けてもよい。
さらに、還流室CCにおいて空気を対流させることが可能であれば、整流板20は設けなくてもよい。
(式1) 3O2 + hν → [OやO2 -などの活性酸素] → 2O3
(式2) C(活性炭)+ 2O3 → CO2 + 2O2 + 679kJ
(式3) O3 + X(触媒) → X-O + O2
(式4) X-O + O3 → X + 2O2
図4は、第2の実施態様の空気清浄機の断面図である。第2の実施態様においては、図4に示すように、紫外線ランプ23を装置内の空気の流路に沿うよう縦に設置することにより、空気に対する紫外線の照射時間を長くして、殺菌効果を高めることができる。
そして、第1の実施態様に示されるような水平に設置した紫外線ランプ23を併用してもよいし、併用しなくともよい。水平に設置した紫外線ランプと縦に設置した紫外線ランプを併用すれば、殺菌効果をさらに高めることができる。
例えば、水平に設置した紫外線ランプ23から波長185nmの紫外線を発生している場合には、縦に設置した紫外線ランプ23からは、波長254nmの紫外線を発生させることによって、殺菌効果を強化することができる。
つまり、水平に設置された紫外線ランプと縦に設置された紫外線ランプの両方から波長185nmの紫外線と波長254nmの紫外線の両方を発生させてもよいし、水平に設置された紫外線ランプと縦に設置された紫外線ランプとで発生波長を適宜に組み合わせて発生させることとしてもよい。
また、縦に設置する紫外線ランプの数は1本でもよいし、複数本を並列させてもよい。
さらに、第2の実施態様においては、整流板20を下向きに取り付けることにより、第1の実施態様で採用していた還流板24を用いなくとも、効率良く空気の対流を発生することが可能となり、紫外線ランプを最大限利用することが可能となる。
空気清浄機の内部において、紫外線ランプから発生される紫外線を有効に活用するため、筐体の内部に反射部材を設けることもできる。反射部材を設けることによって、紫外線ランプから発生した紫外線が装置内で反射を繰り返し、空気の殺菌効果を一層高めることができる。
なお、反射部材は反射のためだけに用いる独立した部材である必要はなく、筐体の内壁や整流板などの表面に反射膜を形成することによって設置することもできる。
上述した空気清浄機1を医療の現場などより効果的に使用するためには、本実施形態にかかる空気清浄機1を、例えば一定の空間を形成する感染者隔離用の簡易ブース30の給気装置または排気装置として用いることができる。
以下、本発明者が行った実験結果について説明する。
本実施形態の空気清浄機1を用いて、還流室CC内の空気に紫外線ランプより紫外線を照射することにより発生したオゾン量を、株式会社佐藤商事社製オゾン検知器(オゾンチェッカー)OC-300で測定したところ、測定範囲を超える0.25ppm以上のオゾンが検出された。一方、二酸化マンガン系触媒フィルタ25を通過した空気のオゾン量を、同オゾン検知器を置いて測定したところ、オゾン量は0.000ppm以下であった。
10 筐体
11 吸気開口
12 排気開口
13 排気筒
14 遮蔽板
15 プレフィルタ
16 仕切り板
17 HEPAフィルタ
18 ファン
19 モータ
20 整流板
21 保持板
22 制御回路
23 紫外線ランプ
24 還流板
25 二酸化マンガン系触媒フィルタ
30 簡易ブース
31 オゾンセンサ
CC 還流室
SC 吸引室
CL 隙間
Claims (9)
- 吸気開口と排気開口との間に還流室を形成した筐体と、
前記還流室内において、波長185nmの紫外線と波長254nmの紫外線を同時に発生する紫外線照射装置と、
前記還流室から前記排気開口に向かう空気が通過するオゾン分解部材と、
前記還流室内に配置され、前記吸気開口から前記排気開口に向かって流れる空気の一部に当たり、還流させる還流板と、を有し、
前記紫外線照射装置から照射された紫外線は、前記吸気開口から前記還流板に向かう空気と、前記還流板から還流される空気の双方に照射される、
ことを特徴とする空気清浄機。 - 吸気開口と排気開口との間に還流室を形成した筐体と、
前記還流室内において、波長185nmの紫外線と波長254nmの紫外線を同時に発生する紫外線照射装置と、
前記還流室から前記排気開口に向かう空気が通過するオゾン分解部材と、を有し、
前記紫外線照射装置は、前記筐体の縦方向に設置され、
前記紫外線照射装置から照射された紫外線は、前記吸気開口から前記排気開口に向かう空気に照射される、
ことを特徴とする空気清浄機。 - 前記紫外線照射装置は、前記筐体の水平方向及び縦方向にそれぞれ設置されており、
前記筐体の水平方向に設置された前記紫外線照射装置は、少なくとも波長185nmの紫外線を発生させ、
前記筐体の縦方向に設置された前記紫外線照射装置は、少なくとも波長254nmの紫外線を発生させる、
ことを特徴とする請求項2に記載の空気清浄機。 - 前記筐体内を、前記排気開口側の前記還流室と、前記吸気開口側の吸引室とに分ける仕切りを有し、
前記吸引室に、前記吸気開口を介して進入した空気が通過するHEPAフィルタが配置されている、
ことを特徴とする請求項1~3のいずれか一項に記載の空気清浄機。 - 前記吸引室から前記還流室に進入した空気の流れを、前記排気開口側に向ける整流板を有する、
ことを特徴とする請求項4に記載の空気清浄機。 - 前記オゾン分解部材は、二酸化マンガン系触媒フィルタである、
ことを特徴とする請求項1~5のいずれか一項に記載の空気清浄機。 - 前記空気清浄機は、前記筐体内に反射部材を有している
ことを特徴とする請求項1~6のいずれか一項に記載の空気清浄機。 - 前記反射部材は、前記筐体内の部材の一部の表面に形成された反射膜である
ことを特徴とする請求項7に記載の空気清浄機。 - 一定の空間を形成するブースに請求項1~8のいずれか一項に記載の空気清浄機を給気装置または排気装置として取り付けたことを特徴とする感染防止用清浄化ブース。
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