CN109224841A - Compound air purification filter paper and its application - Google Patents

Compound air purification filter paper and its application Download PDF

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Publication number
CN109224841A
CN109224841A CN201811215944.5A CN201811215944A CN109224841A CN 109224841 A CN109224841 A CN 109224841A CN 201811215944 A CN201811215944 A CN 201811215944A CN 109224841 A CN109224841 A CN 109224841A
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CN
China
Prior art keywords
cylinder
layer
filter paper
net cylinder
baffle
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Granted
Application number
CN201811215944.5A
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Chinese (zh)
Other versions
CN109224841B (en
Inventor
姜风
韩曙鹏
杨林
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Yadu Science And Technology Group Co Ltd
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Yadu Science And Technology Group Co Ltd
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Priority to CN201811215944.5A priority Critical patent/CN109224841B/en
Publication of CN109224841A publication Critical patent/CN109224841A/en
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Publication of CN109224841B publication Critical patent/CN109224841B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8671Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
    • B01D53/8675Ozone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/54Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • B01D46/543Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8668Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/70Non-metallic catalysts, additives or dopants
    • B01D2255/702Carbon
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention discloses a kind of compound air purification filter paper, including what is stacked gradually: the first protective layer, ozone decomposition layer, oxidation of formaldehyde layer, filter layer and the second protective layer.The present invention also provides a kind of air cleaning filter cylinders comprising above-mentioned compound air purification filter paper.Compound air purification filter paper energy ozone decomposition, oxidation formaldehyde, filter bacteria and dust granules of the invention, have preferable air purification effect.

Description

Compound air purification filter paper and its application
Technical field
The present invention relates to compound air purification filter paper and its applications.
Background technique
Air cleaning filter cylinder is the core component of air purifier, and air cleaning filter paper is equipped in air cleaning filter cylinder, empty The performance of gas purification filter paper directly determines the effect of air cleaning, and existing air cleaning performance of filter paper is single, to air Clean-up effect has much room for improvement.
Summary of the invention
The purpose of the present invention is to provide a kind of compound air purification filter paper and its application, the compound air purification filter paper energy Ozone decomposition, oxidation formaldehyde, filter bacteria and dust granules, have preferable air purification effect.
To achieve the above object, the present invention provides a kind of compound air purification filter paper, including what is stacked gradually: the first protection Layer, ozone decomposition layer, oxidation of formaldehyde layer, filter layer and the second protective layer;
First protective layer is flame-retardant sponge;
The ozone decomposition layer is made of the active carbon equipped with room temperature ozone decomposition catalyst;
The oxidation of formaldehyde layer is made of the active carbon equipped with room temperature oxidation of formaldehyde catalyst;
The filter layer is polymer porous film, and the aperture of polymer porous film is 0.2~0.5um, porosity of=95%;
Second protective layer is fire retardant nonwoven fabric.
Preferably, first protective layer stacked gradually, ozone decomposition layer, oxidation of formaldehyde layer, filter layer and second Protective layer passes through gluing process combining together.
The present invention also provides a kind of air cleaning filter cylinders comprising above-mentioned compound air purification filter paper.
Preferably, the compound air purification filter paper is cylindrical shape.
Preferably, the cylindrical air purifies filter paper comprising stacks gradually from the inside to the outside: the first protective layer, smelly Oxygen decomposition layer, oxidation of formaldehyde layer, filter layer and the second protective layer.
Preferably, the cylindrical air purifies filter paper comprising stacks gradually from outside to inside: the first protective layer, smelly Oxygen decomposition layer, oxidation of formaldehyde layer, filter layer and the second protective layer.
Preferably, the air cleaning filter cylinder includes cylindric main cylinder;
The main cylinder includes successively being set with from the inside to the outside: cylindrical internal net cylinder, cylindric compound air purification filter paper and Cylindrical external net cylinder;The inner wall of cylindric compound air purification filter paper and the outer wall of interior net cylinder recline, and cylindric composite air is net The inner wall of the outer wall and outer net cylinder of changing filter paper reclines;Interior net cylinder, cylindric compound air purification filter paper and outer net cylinder pass through a pair Circular ring shape end cap fits together, this is interior net cylinder, cylindric compound air purification filter paper, outer to the end cap heart coaxial with interior net cylinder The axial ends of net cylinder respectively closes end cap by this.
Preferably, above-mentioned a pair of of end cap is respectively equipped with circular ring shape slot, circular ring shape slot heart coaxial with the end cap where it; Interior net cylinder, cylindric compound air purification filter paper, outer net cylinder axial ends be inserted into the circular ring shape slot to end cap respectively.
Preferably, the interior net cylinder, cylindric compound air purification filter paper, outer net cylinder and above-mentioned a pair of of end cap are all removable Unload connection.
Preferably, semicolumn planar baffle is equipped with inside the main cylinder, the cylindrical surface heart coaxial with interior net cylinder where baffle; The outer wall of baffle and the inner wall of interior net cylinder recline, and baffle outer wall is slidably matched with interior net cylinder inner wall;The axial ends of baffle with It is above-mentioned a pair of end cap one-to-one correspondence reclines, and the axial ends of baffle and this to end cap one-to-one correspondence be slidably matched;
The baffle is furnished with: driving baffle surrounds the shaft of interior net cylinder axis rotation;The shaft heart coaxial with interior net cylinder, baffle are located at Between shaft and interior net cylinder, the inner wall of baffle is connect by connecting rod with shaft;
One end of the shaft is equipped with the motor for driving its rotation;Motor is located in one of in the inner ring of end cap, and motor passes through Support rod is connect with the end cap, and support rod is located on the outside of baffle.
Compound air purification filter paper of the invention has a characteristic that
1) ozone decomposition layer is made of the active carbon equipped with room temperature ozone decomposition catalyst, can decompose at room temperature smelly Oxygen.
2) oxidation of formaldehyde layer is made of the active carbon equipped with room temperature oxidation of formaldehyde catalyst, can aoxidize at room temperature Formaldehyde.
3) filter layer is polymer porous film, and the aperture of polymer porous film is 0.2~0.5um, porosity of=95%, energy Filter bacteria and dust granules.
4) the first protective layer is flame-retardant sponge, can be played a protective role to ozone decomposition layer.
5) the second protective layer is fire retardant nonwoven fabric, can be played a protective role to filter layer.
As it can be seen that compound air purification filter paper provided by the invention, it can ozone decomposition, oxidation formaldehyde, filter bacteria and dirt Angstrom particle has preferable air purification effect.
Air cleaning filter cylinder provided by the invention, using cylindric compound air purification filter paper, it may have ozone decomposition, oxygen Change the ability of formaldehyde, filter bacteria and dust granules, there is preferable air purification effect.
When needing to purify air, air is introduced into inside the main cylinder of air cleaning filter cylinder, is then passed sequentially through Interior net cylinder, cylindric compound air purification filter paper, outer net cylinder, are finally expelled to outside air cleaning filter cylinder.
Semicolumn planar baffle, the outer wall of baffle and interior net cylinder is arranged in the present invention inside the main cylinder of air cleaning filter cylinder Inner wall recline, shaft can drive baffle so that baffle is recycled sweeping on the inner wall of interior net cylinder around interior net cylinder axis rotation, interior The inner wall of net cylinder has half region to be covered by baffle always, and (interior net cylinder inner wall is covered the shaded areas of interior net cylinder by baffle Region) along interior net cylinder/main cylinder circumferential direction loopy moving, the ventilation area (area that interior net cylinder inner wall is not covered by baffle of interior net cylinder Domain, for air permeable) also along interior net cylinder/main cylinder circumferential direction loopy moving, it can achieve two effects in this way:
1) the outlet region of air cleaning filter cylinder is substantially opposite with baffle, i.e., the discharge directions of air cleaning filter cylinder can also be along interior Net cylinder/main cylinder circumferential direction loopy moving realizes circumferential circulating exhaust convenient for air purifier.
2) cylindric compound air purification filter paper mainly purifies the gas entered by ventilation area, due to interior net cylinder There is also shaded areas, therefore cylindric compound air purification filter paper is not whole all in identical working strength, cylindric Compound air purification filter paper is there are the region of bottom working strength (region of bottom working strength is corresponding with shaded areas), and basic skill or training Make the region of intensity also along interior net cylinder/main cylinder circumferential direction loopy moving, i.e., cylindric compound air purification filter paper begins in the circumferential It is in the alternate cycles of " work " and " rest " eventually, the service life of cylindric compound air purification filter paper can be improved in this way, Reduce the use cost of user.
Specific embodiment
With reference to embodiment, the specific embodiment of the present invention is further described.Following embodiment is only used for more Add and clearly demonstrate technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
A kind of compound air purification filter paper, including what is stacked gradually: the first protective layer, ozone decomposition layer, oxidation of formaldehyde layer, filtering Layer and the second protective layer;
First protective layer is flame-retardant sponge;
The ozone decomposition layer is made of the active carbon equipped with room temperature ozone decomposition catalyst;
The oxidation of formaldehyde layer is made of the active carbon equipped with room temperature oxidation of formaldehyde catalyst;
The filter layer is polymer porous film, and the aperture of polymer porous film is 0.2~0.5um, porosity of=95%;
Second protective layer is fire retardant nonwoven fabric.
Embodiment 2
A kind of compound air purification filter paper, on the basis of embodiment 1, difference is:
First protective layer stacked gradually, ozone decomposition layer, oxidation of formaldehyde layer, filter layer and the second protective layer pass through glue Glutinous process combining is together.
Embodiment 3
A kind of air cleaning filter cylinder comprising the compound air purification filter paper in embodiment 1 or 2.
Embodiment 4
A kind of air cleaning filter cylinder, on the basis of embodiment 3, difference is:
The compound air purification filter paper is cylindrical shape.
Embodiment 5
A kind of air cleaning filter cylinder, on the basis of embodiment 4, difference is:
The cylindrical air purifies filter paper comprising stacks gradually from the inside to the outside: the first protective layer, ozone decomposition layer, first Oxidation of aldehydes layer, filter layer and the second protective layer.
Embodiment 6
A kind of air cleaning filter cylinder, on the basis of embodiment 4, difference is:
The cylindrical air purifies filter paper comprising stacks gradually from outside to inside: the first protective layer, ozone decomposition layer, first Oxidation of aldehydes layer, filter layer and the second protective layer.
Embodiment 7
A kind of air cleaning filter cylinder, on the basis of embodiment 5 or 6, difference is:
The air cleaning filter cylinder includes cylindric main cylinder;
The main cylinder includes successively being set with from the inside to the outside: cylindrical internal net cylinder, cylindric compound air purification filter paper and Cylindrical external net cylinder;The inner wall of cylindric compound air purification filter paper and the outer wall of interior net cylinder recline, and cylindric composite air is net The inner wall of the outer wall and outer net cylinder of changing filter paper reclines;Interior net cylinder, cylindric compound air purification filter paper and outer net cylinder pass through a pair Circular ring shape end cap fits together, this is interior net cylinder, cylindric compound air purification filter paper, outer to the end cap heart coaxial with interior net cylinder The axial ends of net cylinder respectively closes end cap by this.
Embodiment 8
A kind of air cleaning filter cylinder, on the basis of embodiment 7, difference is:
Above-mentioned a pair of end cap is respectively equipped with circular ring shape slot, circular ring shape slot heart coaxial with the end cap where it;Interior net cylinder, cylinder Shape compound air purification filter paper, outer net cylinder axial ends be inserted into the circular ring shape slot to end cap respectively.
Embodiment 9
A kind of air cleaning filter cylinder, on the basis of embodiment 7 or 8, difference is:
The interior net cylinder, cylindric compound air purification filter paper, outer net cylinder and above-mentioned a pair of of end cap are all to be detachably connected.
Embodiment 10
A kind of air cleaning filter cylinder, on the basis of embodiment 7,8 or 9, difference is:
Semicolumn planar baffle is equipped with inside the main cylinder, the cylindrical surface heart coaxial with interior net cylinder where baffle;The outer wall of baffle It reclines with the inner wall of interior net cylinder, and baffle outer wall is slidably matched with interior net cylinder inner wall;The axial ends of baffle and above-mentioned a pair of end Lid correspond recline, and the axial ends of baffle and this to end cap one-to-one correspondence be slidably matched;
The baffle is furnished with: driving baffle surrounds the shaft of interior net cylinder axis rotation;The shaft heart coaxial with interior net cylinder, baffle are located at Between shaft and interior net cylinder, the inner wall of baffle is connect by connecting rod with shaft;
One end of the shaft is equipped with the motor for driving its rotation;Motor is located in one of in the inner ring of end cap, and motor passes through Support rod is connect with the end cap, and support rod is located on the outside of baffle.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications Also it should be regarded as protection scope of the present invention.

Claims (10)

1. compound air purification filter paper, which is characterized in that including what is stacked gradually: the first protective layer, ozone decomposition layer, formaldehyde oxygen Change layer, filter layer and the second protective layer;
First protective layer is flame-retardant sponge;
The ozone decomposition layer is made of the active carbon equipped with room temperature ozone decomposition catalyst;
The oxidation of formaldehyde layer is made of the active carbon equipped with room temperature oxidation of formaldehyde catalyst;
The filter layer is polymer porous film, and the aperture of polymer porous film is 0.2~0.5um, porosity of=95%;
Second protective layer is fire retardant nonwoven fabric.
2. compound air purification filter paper according to claim 1, which is characterized in that first protection stacked gradually Layer, ozone decomposition layer, oxidation of formaldehyde layer, filter layer and the second protective layer pass through gluing process combining together.
3. air cleaning filter cylinder, which is characterized in that it includes compound air purification filter paper of any of claims 1 or 2.
4. air cleaning filter cylinder according to claim 3, which is characterized in that the compound air purification filter paper is cylinder Shape.
5. air cleaning filter cylinder according to claim 4, which is characterized in that the cylindrical air purifies filter paper, packet It includes and stacks gradually from the inside to the outside: the first protective layer, ozone decomposition layer, oxidation of formaldehyde layer, filter layer and the second protective layer.
6. air cleaning filter cylinder according to claim 4, which is characterized in that the cylindrical air purifies filter paper, packet It includes and stacks gradually from outside to inside: the first protective layer, ozone decomposition layer, oxidation of formaldehyde layer, filter layer and the second protective layer.
7. air cleaning filter cylinder according to claim 5 or 6, which is characterized in that the air cleaning filter cylinder includes cylinder Shape main cylinder;
The main cylinder includes successively being set with from the inside to the outside: cylindrical internal net cylinder, cylindric compound air purification filter paper and Cylindrical external net cylinder;The inner wall of cylindric compound air purification filter paper and the outer wall of interior net cylinder recline, and cylindric composite air is net The inner wall of the outer wall and outer net cylinder of changing filter paper reclines;Interior net cylinder, cylindric compound air purification filter paper and outer net cylinder pass through a pair Circular ring shape end cap fits together, this is interior net cylinder, cylindric compound air purification filter paper, outer to the end cap heart coaxial with interior net cylinder The axial ends of net cylinder respectively closes end cap by this.
8. air cleaning filter cylinder according to claim 7, which is characterized in that above-mentioned a pair of end cap is respectively equipped with circular ring shape and inserts Slot, circular ring shape slot heart coaxial with the end cap where it;Interior net cylinder, cylindric compound air purification filter paper, outer net cylinder axial direction Both ends are inserted into respectively in the circular ring shape slot to end cap.
9. air cleaning filter cylinder according to claim 7, which is characterized in that the interior net cylinder, cylindric composite air are net Changing filter paper, outer net cylinder and above-mentioned a pair of of end cap is all to be detachably connected.
10. air cleaning filter cylinder according to claim 7, which is characterized in that be equipped with semi-cylindrical inside the main cylinder Shape baffle, the cylindrical surface heart coaxial with interior net cylinder where baffle;The outer wall of baffle and the inner wall of interior net cylinder recline, and baffle outer wall with Interior net cylinder inner wall is slidably matched;The axial ends of baffle reclines with above-mentioned a pair of of end cap one-to-one correspondence, and the axial ends of baffle It is slidably matched with this to end cap one-to-one correspondence;
The baffle is furnished with: driving baffle surrounds the shaft of interior net cylinder axis rotation;The shaft heart coaxial with interior net cylinder, baffle are located at Between shaft and interior net cylinder, the inner wall of baffle is connect by connecting rod with shaft;
One end of the shaft is equipped with the motor for driving its rotation;Motor is located in one of in the inner ring of end cap, and motor passes through Support rod is connect with the end cap, and support rod is located on the outside of baffle.
CN201811215944.5A 2018-10-18 2018-10-18 Composite air purification filter paper and application thereof Active CN109224841B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811215944.5A CN109224841B (en) 2018-10-18 2018-10-18 Composite air purification filter paper and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811215944.5A CN109224841B (en) 2018-10-18 2018-10-18 Composite air purification filter paper and application thereof

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CN109224841B CN109224841B (en) 2021-04-16

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Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916521A (en) * 1982-07-21 1984-01-27 Jii Ii De Eng Kk Construction of vortex centrifugal type rotary filtering and dust catching device
CN2471394Y (en) * 2001-03-30 2002-01-16 俞阿明 Brush filter
CN2673480Y (en) * 2003-11-26 2005-01-26 葛振贵 Stainless steel filtering barrel filter
JP2005523812A (en) * 2002-04-29 2005-08-11 ジョナサン シェウィッツ トラスト Support structure for holding filter media
CN201049276Y (en) * 2007-06-01 2008-04-23 席玉林 Centrifugal filtering composite dust-removing device
CN101433788A (en) * 2008-11-28 2009-05-20 东莞市宇洁新材料有限公司 Air cleaning filter
EP2173459A1 (en) * 2007-07-20 2010-04-14 Donaldson Company, Inc. Air cleaner arrangements and cartridges
US20120192537A1 (en) * 2005-08-16 2012-08-02 Donaldson Company, Inc. Air cleaner having anti-rotational arrangement and methods
CN104492190A (en) * 2014-12-03 2015-04-08 成都博世德能源科技股份有限公司 Efficient cylinder type air filter for gas turbine
CN204816222U (en) * 2015-06-04 2015-12-02 东莞市宏源净化设备有限公司 Air purification filter screen
CN205127562U (en) * 2015-10-23 2016-04-06 小米科技有限责任公司 Air purifier and filter element thereof
CN205295805U (en) * 2015-12-03 2016-06-08 北京亚都环保科技有限公司 Compound air purification filter paper and use its filter core
CN205392015U (en) * 2016-03-01 2016-07-27 北京小米移动软件有限公司 Air purifier and filter element thereof
CN106334373A (en) * 2016-09-29 2017-01-18 芜湖美智空调设备有限公司 Composite air purifying filter paper material and filter element using same
CN107096320A (en) * 2017-03-29 2017-08-29 浙江工业大学 A kind of air purification method and air purifying filter core
CN107469614A (en) * 2017-07-04 2017-12-15 中国科学院城市环境研究所 A kind of multifunctional air purifying screen pack
CN207085555U (en) * 2017-07-25 2018-03-13 天津贝罗尼生物科技有限公司 A kind of washable filter element structure

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916521A (en) * 1982-07-21 1984-01-27 Jii Ii De Eng Kk Construction of vortex centrifugal type rotary filtering and dust catching device
CN2471394Y (en) * 2001-03-30 2002-01-16 俞阿明 Brush filter
JP2005523812A (en) * 2002-04-29 2005-08-11 ジョナサン シェウィッツ トラスト Support structure for holding filter media
CN2673480Y (en) * 2003-11-26 2005-01-26 葛振贵 Stainless steel filtering barrel filter
US20120192537A1 (en) * 2005-08-16 2012-08-02 Donaldson Company, Inc. Air cleaner having anti-rotational arrangement and methods
CN201049276Y (en) * 2007-06-01 2008-04-23 席玉林 Centrifugal filtering composite dust-removing device
EP2173459A1 (en) * 2007-07-20 2010-04-14 Donaldson Company, Inc. Air cleaner arrangements and cartridges
CN101433788A (en) * 2008-11-28 2009-05-20 东莞市宇洁新材料有限公司 Air cleaning filter
CN104492190A (en) * 2014-12-03 2015-04-08 成都博世德能源科技股份有限公司 Efficient cylinder type air filter for gas turbine
CN204816222U (en) * 2015-06-04 2015-12-02 东莞市宏源净化设备有限公司 Air purification filter screen
CN205127562U (en) * 2015-10-23 2016-04-06 小米科技有限责任公司 Air purifier and filter element thereof
CN205295805U (en) * 2015-12-03 2016-06-08 北京亚都环保科技有限公司 Compound air purification filter paper and use its filter core
CN205392015U (en) * 2016-03-01 2016-07-27 北京小米移动软件有限公司 Air purifier and filter element thereof
CN106334373A (en) * 2016-09-29 2017-01-18 芜湖美智空调设备有限公司 Composite air purifying filter paper material and filter element using same
CN107096320A (en) * 2017-03-29 2017-08-29 浙江工业大学 A kind of air purification method and air purifying filter core
CN107469614A (en) * 2017-07-04 2017-12-15 中国科学院城市环境研究所 A kind of multifunctional air purifying screen pack
CN207085555U (en) * 2017-07-25 2018-03-13 天津贝罗尼生物科技有限公司 A kind of washable filter element structure

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