WO2022102614A1 - 空気清浄システム及び空気清浄方法 - Google Patents
空気清浄システム及び空気清浄方法 Download PDFInfo
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- WO2022102614A1 WO2022102614A1 PCT/JP2021/041190 JP2021041190W WO2022102614A1 WO 2022102614 A1 WO2022102614 A1 WO 2022102614A1 JP 2021041190 W JP2021041190 W JP 2021041190W WO 2022102614 A1 WO2022102614 A1 WO 2022102614A1
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- Prior art keywords
- ozone gas
- ozone
- housing
- alcohol
- aqueous solution
- Prior art date
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- 238000004140 cleaning Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 12
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 222
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 167
- 239000007864 aqueous solution Substances 0.000 claims abstract description 69
- 230000008016 vaporization Effects 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 45
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 37
- 238000004887 air purification Methods 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 abstract description 3
- 238000009834 vaporization Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 138
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 17
- 241000700605 Viruses Species 0.000 description 13
- 239000000126 substance Substances 0.000 description 13
- 241000894006 Bacteria Species 0.000 description 12
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 10
- 239000000654 additive Substances 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- 239000007921 spray Substances 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000003814 drug Substances 0.000 description 9
- 229940079593 drug Drugs 0.000 description 9
- 230000002779 inactivation Effects 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 8
- 238000000354 decomposition reaction Methods 0.000 description 8
- 230000001590 oxidative effect Effects 0.000 description 8
- 230000001954 sterilising effect Effects 0.000 description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 7
- 238000004659 sterilization and disinfection Methods 0.000 description 6
- 239000006200 vaporizer Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 244000005700 microbiome Species 0.000 description 5
- 230000000844 anti-bacterial effect Effects 0.000 description 4
- 230000000415 inactivating effect Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 3
- CDOWNLMZVKJRSC-UHFFFAOYSA-N 2-hydroxyterephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(O)=C1 CDOWNLMZVKJRSC-UHFFFAOYSA-N 0.000 description 2
- 241000711573 Coronaviridae Species 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241001678559 COVID-19 virus Species 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000006199 nebulizer Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
- A61L9/02—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air by heating or combustion
- A61L9/03—Apparatus therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- 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
- A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
- F24F8/26—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media using 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
- A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
- A61L2101/32—Organic compounds
- A61L2101/34—Hydroxy compounds
-
- 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
- A61L2209/11—Apparatus for controlling air treatment
-
- 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
- A61L2209/13—Dispensing or storing means for active compounds
- A61L2209/135—Vaporisers for active components
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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
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
- A61L2209/14—Filtering means
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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
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/20—Method-related aspects
- A61L2209/21—Use of chemical compounds for treating air or the like
- A61L2209/212—Use of ozone, e.g. generated by UV radiation or electrical discharge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Definitions
- This disclosure relates to an air cleaning system and an air cleaning method.
- Air purifiers that use filters such as HEPA filters to purify indoor spaces are on sale.
- such air purifiers cannot sterilize or inactivate microorganisms such as viruses and bacteria.
- ozone gas since ozone gas has a strong oxidizing power, it is used for sterilizing or inactivating microorganisms such as viruses and bacteria existing in space and on the surface of an object.
- high-concentration ozone gas causes health hazards to the human body, and the Japan Society for Occupational Health recommends that the allowable ozone concentration be 0.1 ppm or less.
- Patent Document 1 discloses an air purifier including a first vent that communicates with an indoor space, an ozone generation unit, an ozone decomposition unit, and a second vent that communicates with the interior space.
- the ozone generation section is located between the first vent and the ozone decomposition section.
- a blocking means that can be opened and closed and that can block the flow of ozone gas when the ozone gas is closed is provided.
- the blocking means when a person is indoors, the blocking means is opened and the ozone decomposition part decomposes ozone gas. Further, in the conventional air purifier, the blocking means is closed when no one is in the room, and the ozone gas generated by the ozone generation unit removes the bad odor and the bad odor source in the indoor space.
- conventional air purifiers cannot use high-concentration ozone gas when there are people in the room. Therefore, when an infected person infected with an infectious disease is indoors, droplets containing an infection source such as the above-mentioned microorganisms are scattered in the indoor space due to coughing, etc., and adhere to the surface of the object and accumulate. May increase the risk of infection to other people.
- an object of the present disclosure is to provide an air purifying system and an air purifying method capable of purifying air by hydroxyl radicals generated by adding an additive to ozone gas.
- the air purification system includes an ozone generation unit that generates ozone gas and a discharge unit that atomizes or vaporizes an alcohol aqueous solution and releases it.
- the mole fraction of the alcohol contained in the aqueous alcohol solution with respect to the aqueous alcohol solution is 0.05 or more and 0.35 or less. Hydroxyl radicals are generated by the reaction of ozone gas with an atomized or vaporized aqueous alcohol solution.
- Alcohol may contain at least one of ethanol and isopropanol. Alcohol may be released so as to have a volume ratio of 12 times or less with respect to ozone gas when converted as a gas.
- the air purification system further includes a first housing that houses an ozone generating unit and a releasing unit, and ozone gas and an atomized or vaporized alcohol aqueous solution may react inside the first housing.
- the air purification system further includes a first housing that houses an ozone generating unit and a releasing unit, and ozone gas and an atomized or vaporized alcohol aqueous solution may react outside the first housing.
- the air purification system further includes a second housing for accommodating the ozone generation unit and a third housing for accommodating the emission unit, and the ozone gas and the atomized or vaporized alcohol aqueous solution are the second housing and the third housing. You may react outside of.
- the ozone gas concentration in the external space may be controlled to be 0.1 ppm or less.
- a step of generating ozone gas, a step of atomizing or vaporizing an alcohol aqueous solution and releasing it, and a reaction between the ozone gas and the atomized or vaporized alcohol aqueous solution generate hydroxyl radicals.
- Including the process of The mole fraction of the alcohol contained in the aqueous alcohol solution with respect to the aqueous alcohol solution is 0.05 or more and 0.35 or less.
- an air purifying system and an air purifying method capable of purifying air by hydroxyl radicals generated by adding an additive to ozone gas.
- FIG. 1 is a schematic view showing an air purifying system according to an embodiment.
- FIG. 2 is a schematic diagram showing an air purifying system according to another embodiment.
- FIG. 3 is a schematic diagram showing an air purifying system according to another embodiment.
- FIG. 4 is a graph showing the relationship between the mole fraction of alcohol and the height of the hydroxyl radical fluorescence peak.
- the air purifying system 1 includes an air purifying device 2.
- the air purifier 2 includes a first housing 10, a filter unit 20, a blower unit 30, an ozone generation unit 40, a emission unit 50, and a control unit 60.
- the air purifying device 2 may include an ozone generation unit 40 and a emission unit 50, and does not necessarily have to include a first housing 10, a filter unit 20, a blower unit 30, and a control unit 60.
- the ozone gas generated by the ozone generation unit 40 reacts with the alcohol aqueous solution as an additive released from the emission unit 50 to generate hydroxyl radicals. .. Then, the air purification system 1 purifies the air with hydroxyl radicals.
- Ozone (O3) has a high redox potential of 2.07 V, and ozone gas exhibits extremely strong oxidizing power. Therefore, ozone gas is used for sterilization and virus inactivation. Further, the redox potential of hydroxyl radical (OH ⁇ ) generated in the air by the reaction of a part of ozone gas is as high as 3.85V, and the oxidizing power is the strongest among the molecules containing oxygen atoms. However, under normal conditions without additives, hydroxyl radicals are less likely to be generated from ozone gas.
- the unreacted portion of ozone gas is reacted with an alcohol aqueous solution as an additive to generate hydroxyl radicals having high oxidizing power, and the concentration of hydroxyl radicals in the space is increased. By doing so, the bactericidal power is improved.
- the first housing 10 houses a filter unit 20, a blower unit 30, an ozone generation unit 40, a emission unit 50, and a control unit 60.
- the first housing 10 partitions the internal space of the air purifying device 2 and the indoor space which is an external space.
- the first housing 10 has an intake port 11 for taking in air from the outside of the first housing 10 and an exhaust port 12 for discharging the air taken in from the intake port 11 to the outside of the first housing 10. And are provided.
- An air flow path 13 connecting the intake port 11 and the exhaust port 12 is provided inside the first housing 10, and air flows in the air flow path 13 from the intake port 11 toward the exhaust port 12. ..
- the filter unit 20, the blower unit 30, and the ozone generation unit 40 are arranged in this order from the upstream side.
- the filter unit 20 is provided in the intake port 11 and removes foreign matter from the air taken in from the outside of the first housing 10.
- the filter unit 20 may include, for example, a known dustproof filter. Further, the filter unit 20 may include a known functional filter in addition to the dustproof filter.
- the blower portion 30 is provided on the downstream side of the filter portion 20 in the air flow path 13.
- the air blowing unit 30 allows air to flow from the outside of the first housing 10 to the inside of the first housing 10 through the intake port 11, and the air that has flowed into the first housing 10 is passed through the exhaust port 12 to the first housing. Discharge to the outside of 10.
- the blower unit 30 may include, for example, a sirocco fan.
- the blower portion 30 is arranged on the downstream side of the filter portion 20 in the drawing, if it is arranged in the air flow path 13, it is possible to generate an air flow from the intake port 11 to the exhaust port 12. Therefore, the ventilation unit 30 may be arranged near the exhaust port 12, for example.
- the ozone generation unit 40 generates ozone gas.
- Ozone gas is gaseous ozone.
- the ozone generation unit 40 generates ozone gas from oxygen in the air taken in from the outside of the first housing 10.
- the ozone gas generated by the ozone generation unit 40 is discharged to the outside of the first housing 10 through the exhaust port 12.
- the ozone generation unit 40 is not particularly limited as long as it can generate ozone gas, and may include a discharge type ozone generator such as a corona discharge and a silent discharge, or an ultraviolet lamp type ozone generator.
- the amount of ozone gas generated by the ozone generation unit 40 can be adjusted, for example, by changing the output of the ozone generation unit 40, the ozone generation time, and the like.
- the air cleaning system 1 may include an ozone concentration sensor that measures the ozone gas concentration of at least one of the outside and the inside of the first housing 10.
- an ozone concentration sensor that measures the ozone gas concentration of at least one of the outside and the inside of the first housing 10.
- the ozone gas concentration in the room after the reaction between the ozone gas and the alcohol aqueous solution is measured, so that a direct index of the amount of ozone gas in the room can be obtained. can.
- the ozone concentration sensor is arranged, for example, on the downstream side of the ozone generation unit 40 in the air flow path 13.
- the ozone concentration sensor can directly measure the concentration of the ozone gas generated by the ozone generation unit 40, it is possible to obtain an index of the amount of ozone gas generated by the ozone generation unit 40. Therefore, the ozone gas generation amount can be easily adjusted according to the state of the ozone generation unit 40.
- the ozone gas concentration in the external space in the air purification system 1 is controlled to be 0.1 ppm or less. Thereby, even when a person is indoors, the air can be purified by the air purification system 1.
- the ozone gas concentration in the external space may be controlled to be 0.08 ppm or less. Since the air purification system 1 can be sterilized by hydroxyl radicals, the lower limit of the ozone gas concentration in the external space is not particularly limited, but may be controlled to be, for example, 0.01 ppm or more. In addition, in this specification, ppm means parts per million by volume.
- the concentration of ozone gas generated by the ozone generation unit 40 is not particularly limited. As described above, the ozone gas concentration in the external space is preferably 0.1 ppm or less. However, since ozone gas reacts with an aqueous alcohol solution to generate hydroxyl radicals, at least a part of the ozone gas generated by the ozone generation unit 40 reacts with the aqueous alcohol solution and disappears. Therefore, the concentration of ozone gas generated by the ozone generation unit 40 may exceed 0.1 ppm. However, from the viewpoint of further reducing the ozone gas concentration in the atmosphere outside the first housing 10, it is preferable that the concentration of the ozone gas generated by the ozone generation unit 40 is controlled to be 0.1 ppm or less.
- the concentration of ozone gas generated by the ozone generation unit 40 may be controlled to be 0.08 ppm or less.
- the air purification system 1 can purify air with hydroxyl radicals, the lower limit of the concentration of ozone gas generated by the ozone generation unit 40 is not particularly limited, but is controlled to be, for example, 0.01 ppm or more. May be.
- the release unit 50 atomizes or vaporizes the alcohol aqueous solution and releases it. Then, hydroxyl radicals are generated by the reaction of the ozone gas generated by the ozone generation unit 40 with the atomized or vaporized alcohol aqueous solution. At this time, the atomized or vaporized alcohol aqueous solution may be supplied to the ozone gas, or the ozone gas may be supplied to the atomized or vaporized alcohol.
- Hydroxyl radical is a kind of radical, and can, for example, deprive organic substances such as proteins and lipids constituting microorganisms and decompose them to kill bacteria or inactivate viruses. Hydroxyl radical has a higher redox potential than ozone, and has a sufficient bactericidal or inactivating effect even when the concentration of hydroxyl radical is low. For example, when comparing the CT values (Contention-Time Value) required to sterilize Escherichia coli 99%, it is said that hydroxyl radicals have a CT value that is several hundredths or less that of ozone.
- hydroxyl radicals can effectively sterilize bacteria and inactivate viruses even when the ozone gas concentration is low.
- Hydroxyl radicals are highly reactive and have low persistence because they combine with the deprived hydrogen and change into water.
- hydroxyl radicals can decompose organic substances with high oxidizing power, they can be applied not only to sterilization of bacteria and inactivation of viruses, but also to deodorization, bleaching and washing.
- the CT value required to sterilize Escherichia coli by hydroxyl radicals by 99% is 4.7 ⁇ 10-10 mol / L ⁇ min, and the same tendency is observed with other bacteria and viruses. It is expected that.
- the ozone gas concentration is 0.1 ppm and the relative humidity is 80% (corresponding to so-called ozone fog)
- CT 60
- the TCID 50 drops to 4.6%.
- this value is approximated by an exponential function, it can be estimated that the TCID 50 becomes 1% when the CT is about 92.
- the 99% inactivation time is 920 minutes, that is, about 15 hours.
- an additive is added to a gas having an ozone gas concentration of 0.1 ppm and hydroxyl radicals can be twice as much as the addition of water, the time required for 99% inactivation is 1/2. It will be doubled, that is, about 7.5 hours.
- This inactivation time is inversely proportional to the activation amount (substantial hydroxyl radical concentration) of the reaction product of the ozone gas and the additive.
- ozone fog formed by mixing ozone gas and water vapor fine particles of water
- the same sterilization rate is shown in about 1/5 of the time when ozone gas from which water has been removed is used.
- ozone gas and an aqueous alcohol solution are reacted, they can be sterilized in about half the time when ozone fog is used, so they are inactivated compared to when ozone gas with water removed is used. It can be said that the time is about 1/10.
- the release unit 50 atomizes or vaporizes the alcohol aqueous solution and releases it as described above.
- the aqueous alcohol solution may be released by either atomization or vaporization, or by atomization and vaporization. Further, the alcohol aqueous solution may be minute droplets immediately after being atomized, and then the minute droplets may be vaporized.
- the discharge unit 50 may include at least one of a sprayer for atomizing the alcohol aqueous solution and a vaporizer for vaporizing the alcohol aqueous solution.
- the atomizer may include, for example, at least one selected from the group consisting of ultrasonic atomizers, mesh nebulizers and compressor nebulizers.
- the vaporizer may include, for example, a heated vaporizer.
- the ultrasonic atomizer sprays an aqueous alcohol solution by the cavitation effect of ultrasonic waves.
- the ultrasonic atomizer may include an outer tank provided with an ultrasonic transducer and an inner tank provided inside the outer tank.
- a cooling liquid such as water is stored in the outer tank so as to be in contact with the inner tank, and the ultrasonic vibration energy from the ultrasonic vibrator is applied to the alcohol aqueous solution stored in the inner tank through the cooling liquid. Can be transmitted to spray an aqueous alcohol solution.
- the mesh sprayer sprays an aqueous alcohol solution using ultrasonic vibration and a mesh.
- the mesh nebulizer may include an ultrasonic transducer, a mesh having a plurality of openings, and a tank for accommodating an aqueous alcohol solution.
- the alcohol aqueous solution in the tank is extruded from a plurality of openings of the mesh by the vibration of the ultrasonic vibrator. This allows the mesh atomizer to spray the alcohol aqueous solution.
- the compressor type atomizer sprays the alcohol aqueous solution using the gas compressed by the compressor.
- the compressor type atomizer may include a spray nozzle, a tank, and a compressor.
- the alcohol aqueous solution contained in the tank is sent to the spray nozzle, and the compressor pumps a gas such as air to the spray nozzle.
- the compressor type atomizer can spray an aqueous alcohol solution from a spray nozzle by the gas sent by the compressor.
- the heated vaporizer heats the alcohol aqueous solution and releases the alcohol vaporized solution by heating.
- the heated vaporizer may include a heater and a tank for storing an aqueous alcohol solution.
- the alcohol aqueous solution stored in the tank may be sent to the heater, and the sent alcohol aqueous solution may be vaporized by heating.
- the heater may heat the alcohol aqueous solution by Joule heat.
- the mole fraction of alcohol contained in the alcohol aqueous solution with respect to the alcohol aqueous solution is 0.05 or more and 0.35 or less.
- the hydroxy radical can also be generated by reacting ozone gas with water, but if an alcohol aqueous solution having a molar fraction within the above range is used, the hydroxy radical obtained by reacting ozone gas with the alcohol aqueous solution can be produced. The amount of production increases. Therefore, since hydroxyl radicals having higher oxidizing power than ozone gas can be generated with high efficiency, the effect of sterilizing bacteria and inactivating viruses is improved even if the concentration of ozone gas in the room is kept low. Can be made to.
- the mole fraction of alcohol in the aqueous alcohol solution may be 0.1 or more, or 0.3 or less.
- Alcohol may be released so as to have a volume ratio of 12 times or less with respect to ozone gas when converted as a gas.
- the volume ratio is 12 times or less, the amount of hydroxyl radicals produced by reacting ozone gas with an aqueous alcohol solution may increase.
- the volume ratio may be 11 times or less. Further, the volume ratio may be 0.1 times or more, 1 time or more, or 2 times or more.
- the alcohol contained in the aqueous alcohol solution is not particularly limited. From the viewpoint of easily atomizing or vaporizing the alcohol aqueous solution, it is preferable to contain alcohol having 1 or more and 5 or less carbon atoms.
- the aqueous alcohol solution may contain at least one alcohol selected from the group consisting of propanol such as methanol, ethanol and isopropanol, butanol and pentanol. Among these, the alcohol preferably contains at least one of ethanol and isopropanol, which are generally used as rubbing alcohol. Further, from the viewpoint of increasing the amount of hydroxyl radicals produced, the alcohol preferably contains ethanol.
- the ozone gas and the atomized or vaporized alcohol aqueous solution react inside the first housing 10.
- the discharge unit 50 may discharge the alcohol aqueous solution into the air flow path 13, discharges the alcohol aqueous solution into a mixing chamber different from the air flow path 13, and discharges ozone gas and the alcohol aqueous solution in the air flow path 13 or the mixing chamber. May react with.
- the release unit 50 may release the alcohol aqueous solution to the downstream side of the ozone generation unit 40 in the air flow path 13, or may release it to the upstream side.
- the control unit 60 includes a CPU, a ROM, and a RAM.
- the CPU can read the program stored in the ROM and execute instructions such as arithmetic and control according to the program.
- the RAM stores information acquired from the blower unit 30, the ozone generation unit 40, the emission unit 50, and the like, and the CPU can read the information stored in the RAM and use it for processing such as calculation.
- the control unit 60 may control ON and OFF of the drive of the blower unit 30, the ozone generation unit 40, and the emission unit 50.
- the control unit 60 may be controlled so that the blower unit 30, the ozone generation unit 40, and the emission unit 50 are continuously driven, or may be controlled to be intermittently driven at a predetermined timing.
- the timing of driving the blower unit 30, the ozone generation unit 40, and the emission unit 50 may be the same or different from each other.
- the control unit 60 may control the timing of driving the ozone generation unit 40 and the emission unit 50 so that the generation of ozone gas and the release of the alcohol aqueous solution occur at the same time.
- the control unit 60 may control the drive timing of the ozone generation unit 40 and the emission unit 50 so that the generation of ozone gas and the release of the alcohol aqueous solution occur at different timings.
- the control unit 60 may control the drive of the ozone generation unit 40 based on the concentration measured by the ozone concentration sensor.
- the hydroxyl radical generated by the reaction between the ozone gas generated by the ozone generation unit 40 and the alcohol aqueous solution released from the emission unit 50 is emitted from the exhaust port 12 without going through the ozone decomposition unit or the like.
- An example of being discharged was explained.
- an ozone decomposition unit that decomposes unreacted ozone gas is provided downstream of the region where hydroxyl radicals are generated in the air flow path 13. You may be prepared. This makes it possible to reduce the concentration of ozone gas in the room while purifying the air.
- the ozone decomposition unit may include, for example, an ozone decomposition catalyst such as manganese dioxide that decomposes ozone gas by contacting with ozone gas.
- the air purification system 1 includes an ozone generation unit 40 that generates ozone gas and a discharge unit 50 that atomizes or vaporizes an alcohol aqueous solution and releases it.
- the mole fraction of the alcohol contained in the aqueous alcohol solution with respect to the aqueous alcohol solution is 0.05 or more and 0.35 or less. Then, hydroxyl radicals are generated by the reaction of ozone gas with the atomized or vaporized aqueous alcohol solution.
- a step of generating ozone gas, a step of atomizing or vaporizing and releasing an alcohol aqueous solution, and a reaction between ozone gas and an atomized or vaporized alcohol aqueous solution cause hydroxy.
- a step of generating radicals includes a step of generating radicals.
- the mole fraction of the alcohol contained in the aqueous alcohol solution with respect to the aqueous alcohol solution is 0.05 or more and 0.35 or less.
- hydroxyl radicals have higher oxidizing power than ozone gas, they can effectively sterilize bacteria and inactivate viruses even when the concentration of hydroxyl radicals in the space is low. Therefore, unlike a conventional air purifier, it is not necessary to fumigate high-concentration ozone gas when no one is indoors.
- hydroxyl radical can decompose organic substances by high oxidizing power, it can be applied to sterilization of bacteria and inactivation of viruses, or in addition to these, for deodorization, bleaching and washing. Therefore, according to the air cleaning system 1 or the air cleaning method according to the present embodiment, the air can be purified by the hydroxyl radical generated by adding an additive to ozone gas.
- the air purifying system 1 or the air purifying method may use high-concentration ozone gas in combination with hydroradicals in order to improve the sterilization of bacteria and the inactivation of viruses when no one is indoors.
- the air purifying system 1 according to the first embodiment includes a first housing 10 that houses an ozone generating unit 40 and a discharging unit 50, and ozone gas and an atomized or vaporized alcohol aqueous solution are contained in the first housing 10. It is reacting inside.
- the air purifying system 1 according to the present embodiment is common to the air purifying system 1 according to the first embodiment in that it includes a first housing 10 that houses the ozone generation unit 40 and the emission unit 50.
- the air purifying system 1 according to the present embodiment the ozone gas and the atomized or vaporized alcohol aqueous solution react with each other on the outside of the first housing 10.
- the air purifying system 1 according to the second embodiment is the same as the air purifying system 1 according to the first embodiment.
- the discharge unit 50 is provided in the first housing 10 so that the alcohol aqueous solution can be discharged to the outside of the first housing 10.
- the discharge unit 50 discharges the alcohol aqueous solution toward the ozone gas discharged through the exhaust port 12 of the first housing 10, for example.
- the ozone gas generated by the ozone generation unit 40 and the alcohol aqueous solution released from the emission unit 50 are mixed on the outside of the first housing 10 to generate hydroxyl radicals.
- the air purification system 1 further includes a first housing 10 for accommodating the ozone generation unit 40 and the emission unit 50, and the ozone gas and the atomized or vaporized alcohol aqueous solution are different from each other. 1 Reacts on the outside of the housing 10. According to the air purification system 1 according to the present embodiment, since hydroxyl radicals are generated on the outside of the first housing 10, bacteria and viruses adhering to the walls, floor and ceiling of the room and objects placed in the room Can contribute to sterilization or inactivation.
- the air purifying system 1 according to the third embodiment includes a first housing 10 that houses an ozone generation unit 40 and a emission unit 50.
- the air purifying system 1 according to the present embodiment includes, instead of the first housing 10, a second housing 15 accommodating the ozone generation unit 40 and a third housing 51 accommodating the emission unit 50. .. Then, the ozone gas and the atomized or vaporized alcohol aqueous solution react with each other on the outside of the second housing 15 and the third housing 51.
- the air purifying system 1 according to the third embodiment is the same as the air purifying system 1 according to the first embodiment.
- the air purification system 1 includes an ozone generation device 3 and a release device 4.
- the ozone generation device 3 includes a second housing 15, a filter unit 20, a blower unit 30, an ozone generation unit 40, and a control unit 60.
- the second housing 15 houses a filter unit 20, a blower unit 30, an ozone generation unit 40, and a control unit 60.
- the second housing 15 corresponds to the first housing 10 and partitions the internal space of the ozone generator 3 and the indoor space which is the external space.
- the second housing 15 is provided with an intake port 11 and an exhaust port 12, and inside the second housing 15, the intake port 11 and the exhaust port 12 are provided.
- An air flow path 13 to be connected is provided.
- the ozone generation device 3 is different from the air purifying device 2 according to the first embodiment in that it does not have a emission unit 50, but is the same as the air purifying device 2 in other points.
- the ozone generation device 3 may be provided with an ozone generation unit 40, and does not necessarily have to include a filter unit 20, a blower unit 30, and a control unit 60.
- the discharge device 4 includes a discharge unit 50 and a third housing 51.
- the discharge unit 50 is housed in the third housing 51.
- the discharge unit 50 is provided in the third housing 51, and the alcohol aqueous solution is sprayed on the outside of the third housing 51.
- As the release unit 50 the same one as in the first embodiment can be used, and the alcohol aqueous solution is atomized or vaporized and released.
- the ozone gas generated by the ozone generation unit 40 is discharged to the outside of the second housing 15. Further, the discharging device 4 discharges the alcohol aqueous solution to the outside of the third housing 51. Then, the ozone gas generated by the ozone generation unit 40 and the alcohol aqueous solution released from the emission unit 50 are mixed on the outside of the second housing 15 and the third housing 51 to generate hydroxyl radicals.
- the air purifying system 1 further includes a second housing 15 for accommodating the ozone generation unit 40 and a third housing 51 for accommodating the emission unit 50. Then, the ozone gas and the atomized or vaporized alcohol aqueous solution react with each other on the outside of the second housing 15 and the third housing 51. According to the air purification system 1 according to the present embodiment, the ozone gas and the alcohol aqueous solution react with each other on the outside of the second housing 15 and the third housing 51. Therefore, hydroxyl radicals are generated on the outside of the second housing 15 and the third housing 51, so that bacteria and viruses adhering to the walls, floor and ceiling of the room and objects placed in the room are sterilized or inactivated. Can contribute to. Further, since the second housing 15 accommodating the ozone generation unit 40 and the third housing 51 accommodating the emission unit 50 can be separated, maintenance in the event of a failure can be facilitated. ..
- the air purification system 1 is installed in a room such as a building or a moving body, and can purify the air in the room.
- the air purification system 1 can be used in, for example, a house, a hospital, a school, a factory, a smoking room, a car, a bus, a train, a ship, and the like.
- the portable air cleaning system 1 has been described, but the air cleaning system 1 is a fixed air cleaning system provided on a ceiling or a wall in a room. May be.
- an isopropanol aqueous solution drug (additive) was prepared by mixing isopropanol and water at a ratio of 1: 9 so that the molar fraction of the special grade isopropanol manufactured by Wako Pure Chemical Industries, Ltd. was 0.1. ..
- isopropanol was released so as to have a volume ratio of about 2.8 times that of ozone gas when converted as a gas.
- the above-mentioned drug released at a flow rate of 20 ⁇ L / min was heated and vaporized. Then, the vaporized drug was mixed with a gas having an ozone gas concentration of 500 ppm and a flow rate of 500 mL / min, and reacted in a reaction vessel kept warm at 30 ° C.
- a beaker containing a chemical sensor solution was placed in the reaction tank.
- DMF N, N-dimethylformamide
- methanol 4: 1 so that the concentration of terephthalic acid was 2 mmol / L.
- terephthalic acid a special grade manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. was used, for DMF, a special grade manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. was used, and for methanol, a special grade manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. was used.
- Terephthalic acid does not fluoresce even when irradiated with ultraviolet rays with a wavelength of 310 nm.
- 2-hydroxyterephthalic acid produced by the reaction of terephthalic acid and hydroxyl radical absorbs ultraviolet rays having a wavelength of 310 nm and emits fluorescence having a peak near a wavelength of 425 nm. Therefore, this chemical sensor solution was used as an index of the amount of hydroxyl radicals produced.
- the fluorescence intensity of the chemical sensor solution was measured using a spectral fluorometer RF-5300 manufactured by Shimadzu Corporation.
- the chemical sensor solution was irradiated with ultraviolet rays having a wavelength of 310 nm, and the peak intensity (hydroxy radical fluorescence peak height) of the spectrum near the wavelength of 425 nm of the fluorescence emitted from the chemical sensor solution was measured.
- Example 2 Hydroxyl radical fluorescence peak height was measured in the same manner as in Example 1 except that an isopropanol aqueous solution drug was prepared by mixing isopropanol and water at a ratio of 3: 7 so that the molar fraction of isopropanol was 0.3. bottom. Isopropanol was released so as to have a volume ratio of about 8.1 times that of ozone gas when converted as a gas.
- Example 3 Example 1 except that a drug of an aqueous ethanol solution was prepared by mixing ethanol and water at a ratio of 1: 9 so that the molar fraction of special grade ethanol manufactured by Fujifilm Wako Junyaku Co., Ltd. was 0.1. The hydroxy radical fluorescence peak height was measured in the same manner. When converted as a gas, ethanol was released so as to have a volume ratio of about 3.6 times that of ozone gas.
- Example 4 Hydroxyl radical fluorescence peak height was measured in the same manner as in Example 1 except that a drug of an aqueous ethanol solution was prepared by mixing ethanol and water at a ratio of 3: 7 so that the mole fraction of ethanol was 0.3. bottom. When converted as a gas, ethanol was released so as to have a volume ratio of about 11 times that of ozone gas.
- Hydroxyl radical fluorescence peak height was measured in the same manner as in Example 1 except that an isopropanol aqueous solution drug was prepared by mixing isopropanol and water at a ratio of 1: 1 so that the molar fraction of isopropanol was 0.5. bottom. Isopropanol was released so as to have a volume ratio of about 13 times that of ozone gas when converted as a gas.
- Hydroxyl radical fluorescence peak height was measured in the same manner as in Example 1 except that a drug of an aqueous ethanol solution was prepared by mixing ethanol and water at a ratio of 1: 1 so that the mole fraction of ethanol was 0.5. bottom. When converted as a gas, ethanol was released so as to have a volume ratio of about 19 times that of ozone gas.
- the amount of hydroxy radicals generated in the case of reacting with an aqueous alcohol solution as in Examples 1 to 4 is about 2 than in the case of reacting with water. It is expected to double.
- the mole fraction of the alcohol becomes too large, the generated hydroxyl radicals react with the alcohol and a part of the generated hydroxyl radicals disappears. Therefore, when the mole fraction is 0.5, it is estimated that the amount of hydroxyl radicals generated is low.
- the amount of hydroxyl radicals generated when the concentration of ozone gas is 500 ppm was evaluated for the convenience of the device, but the same result can be obtained even in a system with a low concentration such as 0.1 ppm of ozone gas. Is expected.
- the amount of alcohol added is preferably in the range where the volume ratio with ozone gas is up to 12 times when converted into gas.
- This disclosure can contribute, for example, to Goal 3 of the Sustainable Development Goals (SDGs) led by the United Nations, "Ensuring healthy lives and promoting welfare for all people of all ages.”
- SDGs Sustainable Development Goals
- Air purification system 10 1st housing 15 2nd housing 40 Ozone generator 50 Discharge part 51 3rd housing
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Abstract
Description
まず、図1を用いて第1実施形態に係る空気清浄システム1について説明する。図1に示すように、本実施形態に係る空気清浄システム1は、空気清浄装置2を備えている。空気清浄装置2は、第1筐体10と、フィルタ部20と、送風部30と、オゾン生成部40と、放出部50と、制御部60とを備えている。ただし、空気清浄装置2はオゾン生成部40と放出部50とを備えていればよく、第1筐体10と、フィルタ部20、送風部30及び制御部60を必ずしも備えている必要はない。本実施形態に係る空気清浄システム1では、後述するように、オゾン生成部40で生成されたオゾンガスと放出部50から放出された添加剤としてのアルコール水溶液とが反応してヒドロキシラジカルが生成される。そして、空気清浄システム1は、ヒドロキシラジカルによって空気を浄化する。
次に、第2実施形態に係る空気清浄システム1について図2を用いて説明する。第1実施形態に係る空気清浄システム1では、オゾン生成部40と放出部50とを収容する第1筐体10を備え、オゾンガスと霧化又は気化されたアルコール水溶液とは第1筐体10の内側で反応している。本実施形態に係る空気清浄システム1では、オゾン生成部40と放出部50とを収容する第1筐体10を備えている点で第1実施形態に係る空気清浄システム1と共通する。一方、本実施形態に係る空気清浄システム1では、オゾンガスと霧化又は気化されたアルコール水溶液とは第1筐体10の外側で反応する。それ以外の点については、第2実施形態に係る空気清浄システム1は第1実施形態に係る空気清浄システム1と同様である。
次に、第3実施形態に係る空気清浄システム1について図3を用いて説明する。第1実施形態に係る空気清浄システム1では、オゾン生成部40と放出部50とを収容する第1筐体10を備えていた。一方、本実施形態に係る空気清浄システム1は、第1筐体10に代え、オゾン生成部40を収容する第2筐体15と放出部50を収容する第3筐体51とを備えている。そして、オゾンガスと霧化又は気化されたアルコール水溶液とは第2筐体15及び第3筐体51の外側で反応する。それ以外の点については、第3実施形態に係る空気清浄システム1は第1実施形態に係る空気清浄システム1と同様である。
まず、富士フイルム和光純薬株式会社製の特級イソプロパノールのモル分率が0.1となるようにイソプロパノールと水とを1:9の比率で混合してイソプロパノール水溶液の薬剤(添加剤)を調製した。次に、ガスとして換算した場合に、オゾン:イソプロパノール=1:2.8(体積比)程度の混合比となるように、オゾンガスと気化されたイソプロパノール水溶液とを反応槽で反応させた。具体的には、イソプロパノールを、ガスとして換算した場合に、オゾンガスに対して体積比で約2.8倍となるように放出した。より具体的には、流量20μL/分で放出された上記薬剤を加熱して気化した。そして、気化された薬剤をオゾンガス濃度が500ppm、流量500mL/minのガスと混合し、30℃で保温された反応槽で反応させた。
イソプロパノールのモル分率が0.3となるようにイソプロパノールと水とを3:7の比率で混合してイソプロパノール水溶液の薬剤を調製した以外は実施例1と同様にしてヒドロキシラジカル蛍光ピーク高を測定した。なお、イソプロパノールは、ガスとして換算した場合に、オゾンガスに対して体積比で約8.1倍となるように放出した。
富士フイルム和光純薬株式会社製の特級エタノールのモル分率が0.1となるようにエタノールと水とを1:9の比率で混合してエタノール水溶液の薬剤を調製した以外は実施例1と同様にしてヒドロキシラジカル蛍光ピーク高を測定した。なお、エタノールは、ガスとして換算した場合に、オゾンガスに対して体積比で約3.6倍となるように放出した。
エタノールのモル分率が0.3となるようにエタノールと水とを3:7の比率で混合してエタノール水溶液の薬剤を調製した以外は実施例1と同様にしてヒドロキシラジカル蛍光ピーク高を測定した。なお、エタノールは、ガスとして換算した場合に、オゾンガスに対して体積比で約11倍となるように放出した。
アルコールのモル分率が0の水を薬剤として用いた以外は実施例1と同様にしてヒドロキシラジカル蛍光ピーク高を測定した。
イソプロパノールのモル分率が0.5となるようにイソプロパノールと水とを1:1の比率で混合してイソプロパノール水溶液の薬剤を調製した以外は実施例1と同様にしてヒドロキシラジカル蛍光ピーク高を測定した。なお、イソプロパノールは、ガスとして換算した場合に、オゾンガスに対して体積比で約13倍となるように放出した。
エタノールのモル分率が0.5となるようにエタノールと水とを1:1の比率で混合してエタノール水溶液の薬剤を調製した以外は実施例1と同様にしてヒドロキシラジカル蛍光ピーク高を測定した。なお、エタノールは、ガスとして換算した場合に、オゾンガスに対して体積比で約19倍となるように放出した。
10 第1筐体
15 第2筐体
40 オゾン生成部
50 放出部
51 第3筐体
Claims (8)
- オゾンガスを生成するオゾン生成部と、
アルコール水溶液を霧化又は気化して放出する放出部と、
を備え、
前記アルコール水溶液に含まれるアルコールの前記アルコール水溶液に対するモル分率は0.05以上0.35以下であり、
前記オゾンガスと霧化又は気化された前記アルコール水溶液とが反応することによってヒドロキシラジカルが生成される、空気清浄システム。 - 前記アルコールはエタノール及びイソプロパノールの少なくともいずれか一方を含む、請求項1に記載の空気清浄システム。
- 前記アルコールは、ガスとして換算した場合に、前記オゾンガスに対して体積比で12倍以下となるように放出される、請求項1又は2に記載の空気清浄システム。
- 前記オゾン生成部と前記放出部とを収容する第1筐体をさらに備え、
前記オゾンガスと霧化又は気化された前記アルコール水溶液とは前記第1筐体の内側で反応する、請求項1~3のいずれか一項に記載の空気清浄システム。 - 前記オゾン生成部と前記放出部とを収容する第1筐体をさらに備え、
前記オゾンガスと霧化又は気化された前記アルコール水溶液とは前記第1筐体の外側で反応する、請求項1~3のいずれか一項に記載の空気清浄システム。 - 前記オゾン生成部を収容する第2筐体と前記放出部を収容する第3筐体とをさらに備え、
前記オゾンガスと霧化又は気化された前記アルコール水溶液とは前記第2筐体及び前記第3筐体の外側で反応する、請求項1~3のいずれか一項に記載の空気清浄システム。 - 外部空間のオゾンガス濃度は0.1ppm以下となるように制御される、請求項1~6のいずれか一項に記載の空気清浄システム。
- オゾンガスを生成する工程と、
アルコール水溶液を霧化又は気化して放出する工程と、
前記オゾンガスと霧化又は気化された前記アルコール水溶液とが反応することによってヒドロキシラジカルを生成する工程と、
を含み、
前記アルコール水溶液に含まれるアルコールの前記アルコール水溶液に対するモル分率は0.05以上0.35以下である、空気清浄方法。
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JP2002126063A (ja) | 2000-10-20 | 2002-05-08 | Toto Ltd | 空気清浄機 |
WO2008139653A1 (ja) * | 2007-05-10 | 2008-11-20 | Kurashiki Boseki Kabushiki Kaisha | 洗浄方法およびそれに用いる装置 |
JP2017123892A (ja) * | 2016-01-12 | 2017-07-20 | 岩崎電気株式会社 | 滅菌方法及び滅菌装置 |
JP2020189387A (ja) | 2019-05-23 | 2020-11-26 | 三菱電機株式会社 | 部品取り出し装置 |
JP2021104144A (ja) * | 2019-12-26 | 2021-07-26 | 青島海爾洗衣机有限公司QingDao Haier Washing Machine Co.,Ltd. | 消臭装置 |
JP6930684B1 (ja) * | 2020-03-27 | 2021-09-01 | 三浦工業株式会社 | 滅菌方法及び滅菌装置 |
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2021
- 2021-11-09 WO PCT/JP2021/041190 patent/WO2022102614A1/ja active Application Filing
- 2021-11-09 JP JP2022561935A patent/JP7513111B2/ja active Active
- 2021-11-09 CN CN202180071960.5A patent/CN116490219A/zh active Pending
- 2021-11-09 EP EP21891860.5A patent/EP4245325A1/en active Pending
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2023
- 2023-04-18 US US18/135,843 patent/US20230293757A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002126063A (ja) | 2000-10-20 | 2002-05-08 | Toto Ltd | 空気清浄機 |
WO2008139653A1 (ja) * | 2007-05-10 | 2008-11-20 | Kurashiki Boseki Kabushiki Kaisha | 洗浄方法およびそれに用いる装置 |
JP2017123892A (ja) * | 2016-01-12 | 2017-07-20 | 岩崎電気株式会社 | 滅菌方法及び滅菌装置 |
JP2020189387A (ja) | 2019-05-23 | 2020-11-26 | 三菱電機株式会社 | 部品取り出し装置 |
JP2021104144A (ja) * | 2019-12-26 | 2021-07-26 | 青島海爾洗衣机有限公司QingDao Haier Washing Machine Co.,Ltd. | 消臭装置 |
JP6930684B1 (ja) * | 2020-03-27 | 2021-09-01 | 三浦工業株式会社 | 滅菌方法及び滅菌装置 |
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CN116490219A (zh) | 2023-07-25 |
JP7513111B2 (ja) | 2024-07-09 |
EP4245325A1 (en) | 2023-09-20 |
JPWO2022102614A1 (ja) | 2022-05-19 |
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