CN112892148A - Indoor UVC ultraviolet ray photodissociation hanging air purifier - Google Patents
Indoor UVC ultraviolet ray photodissociation hanging air purifier Download PDFInfo
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- CN112892148A CN112892148A CN202110132816.XA CN202110132816A CN112892148A CN 112892148 A CN112892148 A CN 112892148A CN 202110132816 A CN202110132816 A CN 202110132816A CN 112892148 A CN112892148 A CN 112892148A
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- 238000006303 photolysis reaction Methods 0.000 title claims abstract description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000015843 photosynthesis, light reaction Effects 0.000 claims abstract description 19
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 14
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002808 molecular sieve Substances 0.000 claims abstract description 14
- 239000011941 photocatalyst Substances 0.000 claims abstract description 14
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 14
- 239000010457 zeolite Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims description 5
- 241000700605 Viruses Species 0.000 abstract description 13
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 12
- 230000001954 sterilising effect Effects 0.000 abstract description 11
- 241000894006 Bacteria Species 0.000 abstract description 10
- 244000005700 microbiome Species 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 231100000957 no side effect Toxicity 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 230000008929 regeneration Effects 0.000 abstract description 3
- 238000011069 regeneration method Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 241000711573 Coronaviridae Species 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002512 chemotherapy Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002215 photochemotherapeutic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/81—X-rays
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Toxicology (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention discloses an indoor UVC ultraviolet photolysis hanging type air purifier, which adopts the left side or the right side of a hanging type box body to enter air, the right side or the left side of the hanging type box body to exit air, when the air enters the box body through a filter screen layer, a plurality of UVC ultraviolet lamps are arranged in the box body, and photocatalyst molecular sieves of titanium dioxide and zeolite are arranged around a plurality of ultraviolet lamp tubes, the UVC ultraviolet sterilizing lamps arranged in the box body emit high-purity monochromatic ultraviolet with the wavelength of 248nm to 280nm and the titanium dioxide and zeolite photocatalyst molecular sieves arranged around the UVC ultraviolet lamp tubes to have the effect of photochemotherapy, and various virus bacteria in a photolysis room, including new crown viruses, can destroy the regeneration capacity of the harmful microorganisms such as the new crown viruses within the extremely short time of 0.1 to 0.8 seconds, and has the advantages of short sterilization time, wide sterilization range and high purification efficiency, no side effect, simple and convenient operation, low cost and the like.
Description
Technical Field
The invention relates to the field of sterilization and disinfection of indoor air by ultraviolet irradiation and photocatalyst photochemotherapy, in particular to a UVC ultraviolet photolysis hanging type air purifier.
Background
Air is a source of life, moistens everything and nourishes life, and the contemporary generation in the social transformation period faces a plurality of environmental pollution problems, wherein the air pollution is particularly prominent. The deterioration of air, the recent emergence of new coronavirus, has forced people to face these serious problems. This is a difficult and long lasting war of mankind and a sharp instrument must be developed that effectively removes these viruses.
It is known that in polluted air, there are four or more types of harmful microorganisms to be eliminated, the first type, various suspended solids, and particulate dust with a diameter less than 100 um; the second category is various bacteria, microorganisms, viruses, the diameter of bacteria is above about 0.5um, and the diameter of some viruses is nanometer; the third category is volatile gas, including various toxic and harmful gases, such as formaldehyde, benzene, etc., and the molecular diameters of the volatile gas and the toxic and harmful gas are all nano-scale; the fourth type is a smoke type, and the particle diameter is about 0.1um, and it is important to eliminate these substances from the viewpoint of purification treatment. At present, diameter particles such as dust falling ash are easy to intercept, only a simple common filter screen is needed, but for substances above PM2.5, particularly various bacteria and microorganisms, viruses, the diameter of the bacteria is about above 0.5um, the diameter of some viruses is nano-scale, and no good means is available for effective removal at present.
The traditional air purifier generally adopts a plurality of filter layers for interception to achieve the purpose of disinfecting and purifying air, but the treatment process has small effect, only PM2.5 can be intercepted, and the elimination of the other three or more types of harmful microorganisms is completely impossible.
UVC ultraviolet lamp disinfects indoor commonly used, all adopts indoor empty personnel to carry out again indoor long time irradiation and reach disinfection.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an indoor UVC ultraviolet photolysis hanging type air purifier for decomposing microorganisms by irradiating photocatalyst with light, wherein air enters the left side or the right side of a hanging type box body, exits from the right side or the left side, and enters the box body through a filter screen layer, a plurality of UVC ultraviolet lamp tubes and photocatalyst molecular sieves with titanium dioxide and zeolite arranged on the peripheries of the ultraviolet lamp tubes are arranged in the box body, a UVC ultraviolet sterilizing lamp arranged in the box body emits high-purity monochromatic ultraviolet rays with the wavelength of 248nm to 280nm and the titanium dioxide and zeolite photocatalyst molecular sieves arranged on the peripheries of the UVC ultraviolet lamp tubes have a photochemotherapeutic effect, and various virus bacteria in the air are decomposed and eliminated in a very short time of 0.1 to 0.8 seconds, so that water or oxygen in the air is decomposed, and various virus bacteria in the air are generatedGas catalysis to generate hydroxyl radical (OH) and superoxide anion (O) with strong oxidizing power2) Activity (HO)2、H2O2) The energy of the photo-generated active groups is equivalent to the high temperature of 3600K, the photo-generated active groups have strong oxidizability, the titanium dioxide and the photocatalyst molecular sieve of the zeolite are not changed or lost in the action process, only a reaction site is provided, the photo-generated active groups have special effect, the properties are stable, safe and nontoxic, and the photo-generated active groups can completely decompose the residual toxins in bacterial remains and bodies. Therefore, the birth of an indoor UVC ultraviolet photolysis hanging type air purifier marks that air sterilization enters a new sterilization period, and has the advantages that: small size, good effect of photochemical therapy, short sterilization time, wide sterilization and disinfection range, no side effect and the like, and can destroy the cell membrane of bacteria and the protein carrier of coagulated virus.
In order to achieve the purpose, the invention adopts the following technical scheme:
this hanging air purifier of UVC ultraviolet ray photodissociation, be equipped with intelligent control panel on the purifier main part face, box one side is equipped with the air inlet, is equipped with PM 2.5's in the interception air filter screen on the air inlet to be equipped with the suction fan, the main part incasement is equipped with a plurality of UVC ultraviolet tube and is equipped with the photocatalyst molecular sieve of titanium dioxide and zeolite around a plurality of UVC ultraviolet tube, and hanging purifier main part another side then is equipped with the gas outlet, is equipped with the fan of giving vent to anger on the gas outlet.
The left side or the right side of the hanging type air purifier box body is used for air inlet, and the right side or the left side of the hanging type air purifier box body is used for air outlet.
A plurality of UVC ultraviolet lamp tubes are arranged in the hanging type air purifier box body, and the wavelength is 248nm to 280 nm.
The molecular sieve arranged around UVC ultraviolet rays of the hanging air purifier is formed by combining titanium dioxide and zeolite powder according to a certain proportion.
The air inlet and the air outlet of the hanging air purifier are respectively provided with a fan.
A filter screen is arranged in front of the fan at the air inlet of the hanging air purifier.
The air outlet and the fan on one side of the hanging air purifier box body are made into a movable door.
In the technical scheme, the indoor UVC ultraviolet photolysis hanging type air purifier adopts the left side or the right side of a hanging box body to admit air, the left side or the right side to exhaust air, when the air enters the box body through a filter screen layer, a plurality of UVC ultraviolet lamps and titanium dioxide arranged around a plurality of ultraviolet lamp tubes and molecular sieves of zeolite photocatalysts are arranged in the box body, the UVC ultraviolet sterilizing lamps arranged in the box body emit high-purity monochromatic ultraviolet light with the wavelength of 248nm to 280nm and the molecular sieves of the photocatalysts of the titanium dioxide and the zeolite arranged around the UVC ultraviolet lamp tubes to play a role of photo-chemotherapy, various virus and bacteria in the air are eliminated by wind-light decomposition in a very short time of 0.1 to 0.8, and the UVC ultraviolet photolysis hanging type air purifier can destroy the regeneration capability of harmful microorganisms, has the advantages of short sterilization time, wide sterilization and disinfection range and high purification efficiency and purity, no side effect, simple and convenient operation, low cost and the like.
Drawings
Fig. 1 is a schematic view of the overall structure of the UVC ultraviolet photolysis air purifier according to the present invention.
Fig. 2 is a schematic view illustrating a position where a hook is placed in the UVC uv photolysis air purifier according to the present invention.
Fig. 3 and 4 are schematic structural decomposition diagrams of the UVC ultraviolet photolysis air purifier according to the present invention:
Detailed Description
The technical scheme of the invention is further explained by combining the embodiment of the attached drawing.
Please refer to fig. 1, fig. 2, fig. 3, and fig. 4.
1 is an air outlet
2 is a box body
3 is an air inlet
The invention relates to a UVC ultraviolet photolysis hanging type air purifier, which mainly comprises an intelligent control panel 2-5 arranged on a purifier body surface 2, an air inlet 3 arranged on one side of a box body 2, a filter screen 3-2 arranged on the air inlet 3 and used for intercepting PM2.5 in the air, and an air suction fan 3-3, a plurality of UVC ultraviolet lamp tubes 2-3 arranged in a main body box 2, photocatalyst molecular sieves 2-2 arranged with titanium dioxide and zeolite around the UVC ultraviolet lamp tubes, an air outlet 1 arranged on the other side surface of the purifier body 2, and an air outlet fan 1-2 also arranged on the air outlet 1. When air enters the box body 2 through the filter screen 3-2, a plurality of UVC ultraviolet lamps 2-3 and photocatalyst molecular sieves 2-2 with titanium dioxide and zeolite are arranged around a plurality of ultraviolet lamp tubes are arranged in the box body 2, and because the UVC ultraviolet sterilizing lamps 2-3 arranged in the box body 2 emit high-purity monochromatic ultraviolet rays with the wavelength of 248nm to 280nm and the titanium dioxide and zeolite photocatalyst molecular sieves arranged around the UVC ultraviolet lamp tubes 2-3 have the effect of photochemotherapy, various virus and bacteria in the air are removed by means of photolysis within a very short time of 0.1 to 0.8 seconds, the UVC ultraviolet photolysis hanging type air purifier can destroy the regeneration capacity of harmful microorganisms and has the advantages of short sterilization time, wide sterilization and disinfection range, high purification efficiency, no side effect, simplicity, convenience, low manufacturing cost, high efficiency and the like.
It will be appreciated by persons skilled in the art that the above embodiments are illustrative only and not intended to be limiting of the invention, and that changes in the above embodiments, variations of which are within the spirit of the invention, will fall within the scope of the appended claims.
Claims (7)
1. The utility model provides an indoor UVC ultraviolet ray photodissociation hanging air purifier which characterized in that:
the purifier comprises a purifier body panel, an intelligent control panel, an air inlet, a PM2.5 particle filter screen and an air suction fan, wherein the intelligent control panel is arranged on the panel of the purifier body, an air inlet is formed in one side face of a box body, the air inlet is provided with a PM2.5 particle filter screen for intercepting air, a plurality of UVC ultraviolet lamp tubes and photocatalyst molecular sieves with titanium dioxide and zeolite arranged around the UVC ultraviolet lamp tubes are arranged in a main body box, an air outlet is formed in the other side face of the purifier body.
2. The indoor UVC uv photolysis air purifier of claim 1, wherein:
and air is fed into the left side or the right side of the box body, and air is discharged from the right side or the left side of the box body.
3. The indoor UVC uv photolysis air purifier of claim 1, wherein:
a plurality of UVC ultraviolet lamps are arranged in the box body, and the wavelength is 248nm to 280 nm.
4. The indoor UVC uv photolysis air purifier of claim 1, wherein:
the molecular sieve arranged in the box body is particles formed by combining titanium dioxide and zeolite according to a certain proportion.
5. The indoor UVC uv photolysis air purifier of claim 1, wherein:
the air inlet and the air outlet are respectively provided with an air inlet fan and an air outlet fan.
6. The indoor UVC uv photolysis air purifier of claim 1, wherein:
a filter screen for intercepting PM2.5 is arranged in front of the air inlet fan.
7. The indoor UVC uv photolysis air purifier of claim 1, wherein:
the air inlet and outlet and the fan on one side of the box body are arranged into a door which can be opened and closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132816.XA CN112892148A (en) | 2021-01-29 | 2021-01-29 | Indoor UVC ultraviolet ray photodissociation hanging air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132816.XA CN112892148A (en) | 2021-01-29 | 2021-01-29 | Indoor UVC ultraviolet ray photodissociation hanging air purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112892148A true CN112892148A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110132816.XA Pending CN112892148A (en) | 2021-01-29 | 2021-01-29 | Indoor UVC ultraviolet ray photodissociation hanging air purifier |
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| Country | Link |
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| CN (1) | CN112892148A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531753A (en) * | 2021-07-15 | 2021-10-22 | 中控净云(北京)科技有限公司 | Disinfection advertisement all-in-one that possesses air disinfection function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050020065A (en) * | 2003-08-20 | 2005-03-04 | 이화용 | Air purifier |
| CN201322393Y (en) * | 2008-12-19 | 2009-10-07 | 幸乾富 | Combined air-conditioning unit with functions of air disinfection and sterilization |
| CN105465898A (en) * | 2014-09-03 | 2016-04-06 | 中国科学院城市环境研究所 | Photocatalyst air purifier |
| CN106322545A (en) * | 2015-06-29 | 2017-01-11 | 上海敬林环保科技有限公司 | Novel air filter |
-
2021
- 2021-01-29 CN CN202110132816.XA patent/CN112892148A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050020065A (en) * | 2003-08-20 | 2005-03-04 | 이화용 | Air purifier |
| CN201322393Y (en) * | 2008-12-19 | 2009-10-07 | 幸乾富 | Combined air-conditioning unit with functions of air disinfection and sterilization |
| CN105465898A (en) * | 2014-09-03 | 2016-04-06 | 中国科学院城市环境研究所 | Photocatalyst air purifier |
| CN106322545A (en) * | 2015-06-29 | 2017-01-11 | 上海敬林环保科技有限公司 | Novel air filter |
Non-Patent Citations (1)
| Title |
|---|
| 中国知识产权研究会编: "《各行业专利技术现状及其发展趋势报告 2015-2016版》", 31 January 2016, 知识产权出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531753A (en) * | 2021-07-15 | 2021-10-22 | 中控净云(北京)科技有限公司 | Disinfection advertisement all-in-one that possesses air disinfection function |
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Application publication date: 20210604 |