CN2654124Y - Air purifier - Google Patents

Air purifier Download PDF

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Publication number
CN2654124Y
CN2654124Y CNU032537433U CN03253743U CN2654124Y CN 2654124 Y CN2654124 Y CN 2654124Y CN U032537433 U CNU032537433 U CN U032537433U CN 03253743 U CN03253743 U CN 03253743U CN 2654124 Y CN2654124 Y CN 2654124Y
Authority
CN
China
Prior art keywords
water curtain
air
liquid case
casing
air cleaner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU032537433U
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Chinese (zh)
Inventor
杨乐锡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CNU032537433U priority Critical patent/CN2654124Y/en
Priority to PCT/CN2004/000454 priority patent/WO2005028965A1/en
Application granted granted Critical
Publication of CN2654124Y publication Critical patent/CN2654124Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • A61L9/145—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes air-liquid contact processes, e.g. scrubbing
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultra-violet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultra-violet radiation
    • A61L9/205—Ultra-violet radiation using a photocatalyst or photosensitiser
    • 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
    • F24F8/117—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 using wet filtering
    • 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
    • F24F8/117—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 using wet filtering
    • F24F8/125—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 using wet filtering using wet filter elements
    • 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
    • F24F8/15—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 by chemical means
    • F24F8/167—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 by chemical means using catalytic reactions
    • 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
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • 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
    • A61L2209/20—Method-related aspects
    • A61L2209/22—Treatment by sorption, e.g. absorption, adsorption, chemisorption, scrubbing, wet cleaning
    • 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

Abstract

The utility model discloses an air purifier, comprising a blower in the casing, a dedusting sieve of an air inlet, an ultraviolet sterilization layer, a photocatalyst sieve and an active carbon adsorption layer, a liquid case applied to contain the cleansed disinfection solution is arranged in the inferior part of the casing, and a water curtain bringing the purifying disinfection solution is also arranged in the casing. Because besides the utility model has an air cleaner, the air also passes through the water curtain bringing the purifying disinfection solution, the hairlike dust is banked up by the water curtain and then went into the water, making the photocatalyst sieve and the active carbon adsorption layer not blocked up by the dust, extending the service time, after the dust is removed from the water, the water curtain bringing the cleansed disinfection solution is also cleaned, and at the same time, the purifying disinfection solution in the water curtain is capable for exterminating partialness bacteria in the air, and then having a further disinfection and killing of bacteria through the ultraviolet sterilization layer, the photocatalyst sieve filter gauze and the active carbon adsorption layer, making the sterilizing rate of the air cleaner reach up to close to 100 percent, making the bacteria harming the human health nowhere to run.

Description

Air cleaner
Technical field
This utility model belongs to the articles for daily use, and specifically a kind of have sterilizing and dedusting effect, a machine that room air is purified.
Background technology
The air cleaner of Chu Shouing in the market, mostly be that the blower fan that air is sucked and discharges is installed in its casing, also have the drainage screen of installing at air intlet, ultraviolet germicidal lamp, photocatalyst filtering net, the activated carbon filter layer that drainage screen is installed later on, what have also is equipped with anion generator etc., when air be inhaled into air cleaner with air cleaner after, through above-mentioned a series of filter-sterilized, with airborne most of dust, the various killing bacteria that is detrimental to health.The shortcoming of above-mentioned air cleaner is; because outside the drainage screen that air intlet is installed can only be blocked in dust granule big in the air; tiny dust still can enter in the machine; when the air that has tiny dust passes through photocatalyst filtering net, activated carbon filter layer etc. again; dust can adhere to cladding on above-mentioned aspect; thereby can reduce its sterilizing effect, long-time use also can be stopped up the space of net, layer.In order to recover to use, must often clear up or change each aspect, otherwise its sterilizing rate can reduce greatly, even perform practically no function; Even if the sterilizing aspect is not cladded, its bacterial inactivation rate is not ideal enough.
The utility model content
Above-mentioned air cleaner bacterial inactivation rate is low in order to solve, the problem of cleaning troublesome maintenance, the technical solution of the utility model is: blower fan, disinfection by ultraviolet light layer, photocatalyst filtering net, activated carbon adsorption layer etc. are installed in the casing of air cleaner, at air intlet the dedusting filter screen is installed, the outlet subtend is indoor; Be provided with the liquid case that splendid attire purifies disinfectant solution in the bottom of casing, in dedusting filter screen on the casing, also being equipped with can be with the purification disinfectant solution band water curtain thereon in the liquid case.
Because can be with interior the installation with the purification disinfectant solution band water curtain thereon in the liquid case at the dedusting filter screen of air intlet, after air passes the dedusting filter screen, granule big in the air is filtered, when passing water curtain again, tiny dust is washed away by the water of water curtain and gets off liquid feeding tank, simultaneously when passing water curtain, purification disinfectant solution on it has been killed airborne part antibacterial, pass through disinfection by ultraviolet light layer, photocatalyst filtering net, activated carbon adsorption layer etc. again, all harmful substances are all killed substantially, after tested, its sterilizing rate can reach 99%, near 100%.Because tiny dust is all stopped by water curtain, can not enter layers such as the interior photocatalyst filtering net of machine, activated carbon adsorption again, also need not often to clear up or change each aspect, makes it can keep long service time, that is has kept higher sterilizing rate.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a broken section front view of the present utility model;
Fig. 2 looks partial sectional view for the right side of Fig. 1.
The specific embodiment
Among Fig. 1, blower fan 10, disinfection by ultraviolet light layer 13, photocatalyst filtering net 12, activated carbon adsorption layer 11 are installed in the casing 4 of air cleaner, at air intlet dedusting filter screen 9 are installed, the air outlet slit subtend is indoor; Be provided with the liquid case 5 that splendid attire purifies disinfectant solution in the bottom of casing 4, in dedusting filter screen 9 on the casing 4, also being equipped with can be with the purification disinfectant solution band water curtain (referring to Fig. 2) thereon in the liquid case 5.
Described water curtain can be with can adsorption moisture as non-woven fabrics etc., again can gas-pervious material make, drive upward axle 8 rotations by motor 1, the drainage screen for no reason 2 that is enclosed within on the lower shaft 8 also rotates together, its underpart is stretched in the liquid case 5 of splendid attire purification disinfectant solution, when drainage screen 2 rotates for no reason, to purify the disinfectant solution band on drainage screen 2 on the one hand, the airborne toadstool that passes drainage screen 2 has been carried out partly sterilization, on the other hand, drainage screen 2 rotations are through purifying disinfectant solution, make to stick to online tiny dust and obtain automatically cleaning and can not stopping up drainage screen 2, reduced and removed the trouble of cleaning, moreover tiny dust can not enter cladding photocatalyst filtering net 12 in the machine again, activated carbon adsorption layer 11 etc., make it be in secular activated state, need not often to clear up or change each aspect.
Described water curtain also can be that drainage screen 2 is vertically fixedly mounted, and on the liquid case 5 micropump that the spray filtering net is used is installed simultaneously, and spray also can solve the sterilization and the automatic cleaning problem of drainage screen 2.
Described water curtain can also be that drainage screen 2 is set level the top that is installed in liquid case 5, it is immersed in purifies in the disinfectant solution, and with an end subtend air intlet of a pipeline, the other end is guided to the bottom of drainage screen 2, and drainage screen 2 still can sterilize and be cleaned automatically.
In order to eliminate airborne abnormal flavour, the anion generator 7 of absorption abnormal flavour effect can be installed in the exit of air.
In order externally to see the liquid level in the liquid case 5, the liquidometer 6 of transparent surface is installed in the front of air cleaner.
For splendid attire or replacing purification disinfectant solution convenience, dismountable dodge gate 3 is installed in the front of air cleaner.
The erection sequence that has each aspect of sterilizing effect in this utility model air cleaner is not limited only to above-mentioned embodiment, can do multiple conversion on this basis, and every in a word is purport with the foregoing, all belongs to protection domain of the present utility model.

Claims (5)

1 one kinds of air cleaners, comprise the dedusting filter screen, disinfection by ultraviolet light layer, photocatalyst filtering net, activated carbon adsorption layer of the blower fan installed in the casing, air intlet etc., it is characterized in that: the bottom of casing is provided with contains the liquid case that purifies disinfectant solution, in dedusting filter screen on the casing, also being equipped with can be with the purification disinfectant solution band water curtain thereon in the liquid case.
2, air cleaner as claimed in claim 1 is characterized in that: described water curtain is the drainage screen for no reason by the driven by motor rotation, and its underpart is stretched in the liquid case of splendid attire purification disinfectant solution.
3, air cleaner as claimed in claim 1 is characterized in that: described water curtain is that drainage screen is vertical fixed installation, on the liquid case micropump that the spray filtering net is used is installed simultaneously.
4, air cleaner as claimed in claim 1 is characterized in that: described water curtain is the purification disinfectant solution top of drainage screen safety in the liquid case, and the pipeline of subtend air cleaner air intlet is guided to the bottom of drainage screen.
5, as arbitrary described air cleaner among the claim 1-4, it is characterized in that: transparent liquidometer is installed in the front of liquid case.
CNU032537433U 2003-09-25 2003-09-25 Air purifier Expired - Fee Related CN2654124Y (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNU032537433U CN2654124Y (en) 2003-09-25 2003-09-25 Air purifier
PCT/CN2004/000454 WO2005028965A1 (en) 2003-09-25 2004-05-08 An air cleaner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU032537433U CN2654124Y (en) 2003-09-25 2003-09-25 Air purifier

Publications (1)

Publication Number Publication Date
CN2654124Y true CN2654124Y (en) 2004-11-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU032537433U Expired - Fee Related CN2654124Y (en) 2003-09-25 2003-09-25 Air purifier

Country Status (2)

Country Link
CN (1) CN2654124Y (en)
WO (1) WO2005028965A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100393361C (en) * 2006-04-28 2008-06-11 陕西师范大学 Hanging type air disinfection device for respiratory infectious disease
CN103277844A (en) * 2013-04-27 2013-09-04 林智勇 PM2.5 filtering window functioning at low temperature and high temperature
CN103721527A (en) * 2013-12-27 2014-04-16 杜建中 Method of purifying indoor air by adopting water curtain absorption method
CN103920256A (en) * 2014-04-04 2014-07-16 叶贤忠 Portable air filter
CN103982947A (en) * 2014-03-28 2014-08-13 浙江润祁节能科技有限公司 Indoor air converter
CN104958973A (en) * 2015-06-24 2015-10-07 贵阳汽车工业技术学校 Small-sized tower-shaped combined waste gas treatment device
CN106247471A (en) * 2016-08-31 2016-12-21 中山圣菲环保科技有限公司 A kind of medicinal liquid volatilization device and there is the air cleaner of this device
CN108904856A (en) * 2018-07-13 2018-11-30 赵贵美 A kind of chlorination equipment for general surgical ward
CN111068094A (en) * 2020-02-13 2020-04-28 北京博卡天诺科技发展有限公司 Filter screen wrapping type air sterilization and disinfection device
WO2022047826A1 (en) * 2020-09-02 2022-03-10 浙江美臣环境科技有限公司 Multifunctional fresh air purifier

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CN102052710A (en) * 2010-12-10 2011-05-11 邯郸派瑞电器有限公司 Air disinfection machine for dust removal and disinfection
JP5800911B2 (en) * 2011-10-25 2015-10-28 パナセア ディシンフェクタント カンパニー リミテッド Functional air conditioning apparatus and functional air conditioning method
CN105012988A (en) * 2015-05-06 2015-11-04 苏州建鑫建设集团有限公司 Movable air disinfecting and purifying apparatus
CN105020877A (en) * 2015-07-31 2015-11-04 东莞旭科电子制品有限公司 Filter element device of air purifier
CN108758898A (en) * 2016-04-22 2018-11-06 杭州云蜂工业设计有限公司 A kind of indoor air purifier
CN107661532A (en) * 2017-09-21 2018-02-06 浙江绿创生物科技有限公司 A kind of medical air purifying and sterilizing equipment
CN109855210B (en) * 2019-03-22 2021-01-05 海森林（厦门）净化科技有限公司 Air purifying device
CN110170067A (en) * 2019-06-06 2019-08-27 徐千里 A kind of water-borne green air germ virus sweep machine
CN110962550B (en) * 2019-11-07 2023-05-16 西安华运天成通讯科技有限公司 Automatic disinfection equipment for automobile air conditioner
EP4111102A1 (en) * 2020-02-26 2023-01-04 Philip Morris Products, S.A. Multiple stage air purification device
IT202000013972A1 (en) * 2020-06-11 2021-12-11 De Longhi Appliances Srl AIR PURIFICATION AND SANITIZATION EQUIPMENT
DE102020119225B3 (en) * 2020-07-21 2021-10-14 Henry Landers Device for disinfecting indoor air
TWI798574B (en) * 2020-08-05 2023-04-11 徐毅珍 Wireless Sterilizer
CN113398308B (en) * 2021-03-15 2023-11-17 光大环境科技（中国）有限公司 Evaporation device and evaporation method
IT202100014948A1 (en) * 2021-06-08 2022-12-08 Aersafe Srl AIR SANITATION DEVICE
CN113436395A (en) * 2021-06-25 2021-09-24 盐城工学院 Intelligent information acquisition display device for epidemic prevention and control
CN113446700B (en) * 2021-06-28 2022-05-06 浙江勒普机电科技有限公司 Multi-functional automatically cleaning air purification fan
CN115814595B (en) * 2022-11-18 2023-09-22 徐州锦程环保设备有限公司 Clean air purifying device
CN116553796B (en) * 2023-06-26 2023-12-12 定州轼沐环保科技有限公司 Environment-friendly fermentation treatment device for livestock manure
CN116906999B (en) * 2023-09-05 2023-11-28 兴化格林生物制品有限公司 Matched ventilation equipment for sterile supply room of hospital

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CN2314279Y (en) * 1997-07-03 1999-04-14 晏长友 Indoor air filter
CN2336251Y (en) * 1998-03-08 1999-09-01 梁继考 Indoor air purifying machine
JP2000257914A (en) * 1999-03-05 2000-09-22 Techno Ryowa Ltd Sterilizing air conditioning system using strong acidic water
US6248155B1 (en) * 1999-08-13 2001-06-19 Bemis Manufacturing Company Combination humidifier and air purifier

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100393361C (en) * 2006-04-28 2008-06-11 陕西师范大学 Hanging type air disinfection device for respiratory infectious disease
CN103277844A (en) * 2013-04-27 2013-09-04 林智勇 PM2.5 filtering window functioning at low temperature and high temperature
CN103721527A (en) * 2013-12-27 2014-04-16 杜建中 Method of purifying indoor air by adopting water curtain absorption method
CN103982947A (en) * 2014-03-28 2014-08-13 浙江润祁节能科技有限公司 Indoor air converter
CN103920256A (en) * 2014-04-04 2014-07-16 叶贤忠 Portable air filter
CN103920256B (en) * 2014-04-04 2018-10-16 叶贤忠 Portable type air filter
CN104958973A (en) * 2015-06-24 2015-10-07 贵阳汽车工业技术学校 Small-sized tower-shaped combined waste gas treatment device
CN106247471A (en) * 2016-08-31 2016-12-21 中山圣菲环保科技有限公司 A kind of medicinal liquid volatilization device and there is the air cleaner of this device
CN108904856A (en) * 2018-07-13 2018-11-30 赵贵美 A kind of chlorination equipment for general surgical ward
CN111068094A (en) * 2020-02-13 2020-04-28 北京博卡天诺科技发展有限公司 Filter screen wrapping type air sterilization and disinfection device
WO2022047826A1 (en) * 2020-09-02 2022-03-10 浙江美臣环境科技有限公司 Multifunctional fresh air purifier

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee