CN1468644A - Air filter - Google Patents
Air filter Download PDFInfo
- Publication number
- CN1468644A CN1468644A CNA031407307A CN03140730A CN1468644A CN 1468644 A CN1468644 A CN 1468644A CN A031407307 A CNA031407307 A CN A031407307A CN 03140730 A CN03140730 A CN 03140730A CN 1468644 A CN1468644 A CN 1468644A
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- CN
- China
- Prior art keywords
- layer
- filter
- activated carbon
- efficiency
- glass
- 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.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims description 18
- 239000004743 Polypropylene Substances 0.000 claims description 13
- -1 polypropylene Polymers 0.000 claims description 13
- 229920001155 polypropylene Polymers 0.000 claims description 13
- 230000002209 hydrophobic effect Effects 0.000 claims description 11
- 239000004745 nonwoven fabric Substances 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 239000003814 drug Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 241000315672 SARS coronavirus Species 0.000 abstract 1
- 230000000274 adsorptive effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 16
- 244000005700 microbiome Species 0.000 description 13
- 239000003365 glass fiber Substances 0.000 description 10
- 239000000443 aerosol Substances 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000009941 weaving Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- 241000700605 Viruses Species 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 230000002147 killing effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 231100000167 toxic agent Toxicity 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Filtering Materials (AREA)
Abstract
The air filter is one two-stage filtering structure, and each of the filtering structure contains efficient filtering material layer and adsorptive active carbon layer. The present invention has the features of high filtering efficiency, low production cost, etc. and is suitable for medicine production, bioengineering, bioprotection and other fields, especially protection against SARS virus.
Description
Technical field
The present invention relates to a kind of air cleaner, relate in particular to a kind of air cleaner that can be used for biological protection.
Background technology
Air cleaner is widely used in every field such as electronics, precision instrumentation, machinery, metallurgy, chemical industry, weaving, medicine, bioengineering, food, cosmetics.Because of the difference of environment for use, multiple air cleaner is arranged, according to the difference of filter efficiency, air cleaner can be divided into high efficiency particulate air filter, medium effeciency filter, low efficient filter etc.Wherein low efficient filter generally adopts composite fibre, non-weaving cloth etc. to make filtrate.Medium effeciency filter generally selects for use polypropylene filter material, non-weaving cloth or glass fibre to make filtrate, the purification filtering that can be used for general air-conditioning system, middle effect, low efficient filter can also to reduce the load of high efficiency particulate air filter, prolong its service life as the fore filter of high efficiency particulate air filter.High efficiency particle air filter generally selects for use glass fibre to make filter material, has characteristics such as filter efficiency height, dust containing capacity is big, resistance is little.
Active carbon has abundant microporous, very big specific area, the absorption property of excellence and good reducing power, it is a kind of efficient sorbing material, can adsorb with filtered air in peculiar smell foul smell, smoke, fine particle, be applicable to various air conditioner ventilating systems, effectively pure air.The employing superfine synthesized fiber is arranged on the market, be equipped with the air cleaner of high grade activated carbon, it is said and effectively to adsorb and to filter dirt mite, pollen, bacterium, oil smoke, foul smell peculiar smell.This air cleaner is generally the one-level filtration.
The air cleaner that some double filtration design are also arranged on the market.As the thick efficient multiple filter of HAF, its structure is divided low efficient filter and high efficiency particulate air filter two parts, and low efficient filter selects for use chemical fibre class material as filter material, at first the grit more than 15 microns in the gas is filtered, thereby alleviates the load of high efficiency particulate air filter.High efficiency particulate air filter selects for use filter paper or filter cloth as filter material, can reach the effect of the grit of filter 23～5 micron.Its filter cartridge construction divides cartridge type folded form and square chest type.This filter is big flow, and high efficiency can be made the population filter of blower fan or compressor.Also has a kind of KLQ air cleaner, its filter core is made up of the empty filter core of secondary square frame of empty filter core of the one-level square frame of thick effect and high-medium efficient, filter material is selected short cellucotton and glass fibre cotton respectively for use, and filtering accuracy is respectively 10 μ m and 2 μ m, and filter efficiency reaches 98% and 99.97%.The air cleaner of these two-layer configurations can not protect microorganisms such as bacterium, virus.
Summary of the invention
The purpose of this invention is to provide a kind of biological protection air cleaner with high efficiency filter performance.Air cleaner of the present invention comprises double filtration design, and every grade of filtration contains high-efficiency filtering material layer and activated carbon adsorption layer.
The design of this air cleaner has two characteristics: the one, and double filtration design is laid by 135 ° of angles between the two-stage filtering layer, reduces the blind area area, reduces the probability that the pin hole effect produces, and reaches the purpose that improves total arresting efficiency simultaneously.Filter material is selected the efficient low-resistance glass fibre, and it has very high arresting efficiency 99.99% to low concentration submicron order dust, because of it does not contain active material, thereby is considered to safest material in all inorfils usually.The 2nd, absorption is complementary with filtration, and every grade of filtration contains high-efficiency filtering material layer and activated carbon adsorption layer.Between 0.5～50nm, total internal surface area of micropore can be up to (700～2300) m in the unit materials according to the aperture of activated carbon capillary
2/ g and active carbon can adsorb the characteristics of some air microbe, are provided with activated carbon adsorption layer between two-stage HEPA filter material.This filter uses the initial stage maximum pressure drop to be 30mm ± 5mm water column under the 30L/min flow, and transmitance is lower than 0.001%, effectively the minimum 6h that guarantees of filtration time.The 3rd, have the pathogen of killing function.Contain silver ion in the active carbon layer in the first order filtration, microorganism is had certain killing action, strengthened the protection effect of filter.
This filter is used for to wind system, and is lower to blast and air quantity requirement, and 99.999% filter effect (mist of oil method or sodium flame method) is arranged under the 120L/min gas flow.Filter adopts the pot type structure, 6 mainly form to the gas outlet from air inlet 1 by following material: polypropylene non-woven fabric hydrophobic layer 2, high-efficiency low-resistance glass filter paper layer 3, activated carbon layer 4, high-efficiency low-resistance glass filter paper layer 3, activated carbon fiber nonwoven layer 5, polypropylene non-woven fabric hydrophobic layer 2 with silver salt, see accompanying drawing 1.
The main effect of this filtration device structure design is as follows:
(1) the polypropylene non-woven fabric hydrophobic layer 2, because bioaerosol mainly becomes aerosol with the fog form, when microorganism concn is big, can take place to assemble and sedimentation.With polypropylene fibre is first separation layer, can reduce moisture in the aerosol particles, improves microorganism concn and impels it to assemble sedimentation.
(2) high-efficiency low-resistance glass filter paper layer 3, glass fibre are present modal cheap high-efficiency filtering materials, and filter efficiency is generally between 99.9%～99.999%, generally speaking.Glass fibre plays main filtration in this filter, using the efficient of glass filter paper in this filter is 99.99%.
(3) the silver salt activated carbon layer 4, the silver nitrate distilled water solution of this layer employing 0.1% soaks common activated carbon, under certain stirring, heat and bake and bank up with earth, make water evaporates, silver nitrate is solidified surface in activated carbon, activated carbon is not strong to the filtration of microorganism, but when microorganism---bacterium or the virus of trace by glass layer, activated carbon surface has a lot of microcellular structures, microorganism is adsorbed in micropore, dissociate, less than 0.3 micron microorganism mainly based on Brownian movement, the specific area of activated carbon is very big, to a certain extent the microorganism range of movement is limited in this layer, prolongs their time by this layer, silver ion in the activated carbon layer has certain bactericidal action simultaneously, to bacterium, microorganisms such as virus can further intercept and and kill to a certain extent.
(4) second layer high-efficiency low-resistance glass filter paper layer 3, because microbial aerosol is widely different because of microbe species to human body harm, for preventing of the harm of strong microorganism to human body, we must consider small probability event, design second layer high-efficiency low-resistance glass filter paper layer 3 behind activated carbon layer, resistance doubles, efficient is more than 99.999%, usually can reach 99.9999% (mist of oil method or sodium flame method are measured), effectively improving under the prerequisite of filter efficiency like this, resistance improves little, be better than adopting the glass fiber filter paper (the common filter paper than 99.99% of the resistance of such filter paper is high more than several times) of individual layer 99.9999%, in fact the layer glass fiber is equivalent to two filters series connection is that two-layer configuration filters.Simultaneously under this filter is used for situation than the atmospheric flow, in case the pin hole effect takes place in ground floor glass filter paper layer 3 in the use, after process silver salt activated carbon layer 4 was redistributed throughput, second layer glass filter paper 3 also can play protective action preferably, improves the security of using.
(5) the activated carbon fiber nonwoven layer 5; activated carbon fiber is to add a large amount of activated carbon in the spinning solution; make activated carbon performance suction-operated; can be used for dressing; the main effect of this layer is to stop the glass particulate; although Many researchers thinks that glass is a kind of safe material; but also there is the minority scholar to think that the glass particulate can produce certain stimulation to human body; under condition in higher throughput; we do not get rid of micro-glass particulate; so use the activated carbon fiber nonwoven layer to take blocking effect, the activated carbon fiber non-weaving cloth also can play a part close with activated carbon layer in addition
(6) second layer polypropylene non-woven fabric hydrophobic layer 2, this layer mainly is because approaching with the people breathing side for avoiding, inevitably also have certain steam, steam enters filter, can reduce the filter effect of filter to the gas of microbial aerosol contaminated side, trace can not combine with moisture by the microorganism of filter simultaneously, can improve the possibility of microorganism sedimentation.
Air cleaner of the present invention has adopted the profile of traditional anti-chemical toxic agent filter, the glass fibre tray support, pallet is fixed by the reinforcement on the filter, two dividing plate folder active carbon layers with holes, fasten with spring and to avoid it to be scattered, place polypropylene non-woven fabric hydrophobic layer and activated carbon fiber non-weaving cloth in the pallet of two glass fibres, this design does not need to change the production mould of anti-chemical toxic agent filter basically, directly utilizes existing equipment just can produce.This filter is mainly used in microbial protection, and the filtering microorganism aerosol also can be used for fields such as medicine, bioengineering.
Description of drawings
Fig. 1 is the structural representation of air cleaner of the present invention.
Fig. 2 is the structure semi-section schematic diagram of air cleaner of the present invention.
The specific embodiment
The structure and the Performance Detection of embodiment one air cleaner
The tank body 11 of air cleaner of the present invention is cylindrical, internal structure is seen accompanying drawing 2 from being followed successively by filter lower cover 7, polypropylene non-woven fabric hydrophobic layer 2, high-efficiency low-resistance glass filter paper layer 3, dividing plate 8, the activated carbon layer 4 with silver salt, polypropylene non-woven fabric hydrophobic layer 2, dividing plate 8, spring 9, dividing plate 8, high-efficiency low-resistance glass filter paper layer 3, activated carbon fiber nonwoven layer 5, polypropylene non-woven fabric hydrophobic layer 2 to tank deck at the bottom of the jar.The effect of its medi-spring is to be the effect of active carbon layer 4 compactings that contain silver salt, the polypropylene non-woven fabric hydrophobic layer 2 that is adjacent to avoid the active carbon layer diffusion.
Air cleaner of the present invention is through multinomial detection, and the result is as follows:
1, GB/T2892-1995 " filtermask canister performance test test method ", standard-required: mist of oil transmission coefficient＜0.01%.
It is as follows to randomly draw 5 sample experimental results:
0.000055%, 0.000052%, 0.000055%, 0.000055%, 0.000055% (measuring) by national articles for labour protection quality supervision and test center
2, GB/T2892-1995 " filtermask canister performance test test method ", standard-required: mist of oil transmission coefficient＜0.01%.
It is as follows to randomly draw 5 sample experimental results:
0.00010%, 0.00006%, 0.00004%, 0.000016%, 0.000010% (formulating unit, metering approval unit of Commission of Science, Technology and Industry for National Defence---metrology and measurement center, Xinhua chemical plant mensuration) by GB/T2892
3, sodium chloride aerosol filter effect test, test gas flow 30L/min, 50L/min, 85L/min, 100L/min, 125L/min require filter efficiency＞99.99%.
Randomly draw 5 sample experimental results all greater than 99.999% (formulating Anti-Chemical Defence Research Inst. PLA of unit by GB/T2892 measures)
4, inspiration bacterium filter effect evaluation test.The medicinal aerosol generator produces inspiration bacterium aerosol, and aerosol flow 28.3L/min detects the filter effect of filter in 6 hours of randomly drawing, (Microbiology and Epidemic Disease Inst., Academy of Military-Medical Sciences's mensuration)
Result of the test sees Table 1:
Table 1 inspiration bacterium filter effect evaluation test result
| Sampling instant (apart from time zero) | Count results | Transmitance (%) | |||
| Sample number | The plate position | Background | After the filtration | ||
| 5 minutes | ????1 | On | ??260 | ????0 | ????0 |
| Down | ??254 | ????0 | |||
| ????2 | On | ??252 | ????0 | ????0 | |
| Down | ??278 | ????0 | |||
| ????3 | On | ??257 | ????0 | ????0 | |
| Down | ??273 | ????0 | |||
| 30 minutes | ????1 | On | ??677 | ????0 | ????0 |
| Down | ??767 | ????0 | |||
| ????2 | On | ??432 | ????0 | ????0 | |
| Down | ??1024 | ????0 | |||
| ????3 | On | ??267 | ????0 | ????0.26 | |
| Down | ??499 | ????2 | |||
| 1 hour | ????1 | On | ??504 | ????0 | ????0 |
| Down | ??446 | ????0 | |||
| ????2 | On | ??449 | ????0 | ????0.31 | |
| Down | ??506 | ????3 | |||
| ????3 | On | ??488 | ????0 | ????0.13 | |
| Down | ??274 | ????1 | |||
| 2 hours | ????1 | On | ??597 | ????0 | ????0 |
| Down | ??372 | ????0 | |||
| ????2 | On | ??646 | ????0 | ????0 | |
| Down | ??469 | ????0 | |||
| ????3 | On | ??284 | ????0 | ????0 | |
| Down | ??672 | ????0 | |||
| 4 hours | ????1 | On | ??433 | ????0 | ????0 |
| Down | ??432 | ????0 | |||
| ????2 | On | ??341 | ????0 | ????0.21 | |
| Down | ??604 | ????2 | |||
| ????3 | On | ??272 | ????0 | ????0 | |
| Down | ??496 | ????0 | |||
| 5 hours | ????1 | On | ??138 | ????0 | ????0 |
| Down | ??270 | ????0 | |||
| ????2 | On | ??170 | ????0 | ????0 | |
| Down | ??271 | ????0 | |||
| ????3 | On | ??178 | ????0 | ????0 | |
| Down | ??249 | ????0 | |||
| 5.5 hour | ????1 | On | ??113 | ????0 | ????0 |
| Down | ??237 | ????0 | |||
| ????2 | On | ??93 | ????0 | ????0.30 | |
| Down | ??235 | ????1 | |||
| ????3 | On | ??55 | ????0 | ????0 | |
| Down | ??237 | ????0 | |||
| 6 hours | ????1 | On | ??138 | ????0 | ????0 |
| Down | ??215 | ????0 | |||
| ????2 | On | ??80 | ????0 | ????0 | |
| Down | ??212 | ????0 | |||
| ????3 | On | ??50 | ????0 | ??0 | |
| Down | ??215 | ????0 |
Claims (4)
1, a kind of air cleaner is characterized in that being double filtration design, and the two-stage filtering layer is 135 ° of angles, and every grade of filtration contains high-efficiency filtering material layer and activated carbon adsorption layer.
2, filter according to claim 1 is characterized in that the high-efficiency filtering material layer is glass layer (3) in the filter.
3, filter according to claim 1 and 2 is characterized in that activated carbon adsorption layer is argentiferous active carbon layer (4) or NACF layer (5).
4, filter according to claim 1 and 2, it is characterized in that surrounding air enters filter by air inlet (1), through polypropylene non-woven fabric hydrophobic layer (2), high-efficiency low-resistance glass filter paper layer (3), argentiferous active carbon layer (4), high-efficiency low-resistance glass filter paper layer (3), activated carbon fiber nonwoven layer (5) and polypropylene non-woven fabric hydrophobic layer (2), discharge (6) from the gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03140730 CN1233442C (en) | 2003-06-06 | 2003-06-06 | Air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03140730 CN1233442C (en) | 2003-06-06 | 2003-06-06 | Air filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1468644A true CN1468644A (en) | 2004-01-21 |
| CN1233442C CN1233442C (en) | 2005-12-28 |
Family
ID=34155271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03140730 Expired - Fee Related CN1233442C (en) | 2003-06-06 | 2003-06-06 | Air filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1233442C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319626C (en) * | 2005-01-11 | 2007-06-06 | 佛山市顺德区阿波罗环保器材有限公司 | Production of colouring air filter |
| CN101869798A (en) * | 2009-04-23 | 2010-10-27 | 厦门市宇洲环保科技有限公司 | Mobile exhaust air adsorbing purification device |
| CN101972580A (en) * | 2010-07-28 | 2011-02-16 | 苏州顶裕节能设备有限公司 | Device for reducing pressure damage on activated carbon adsorption tower |
| CN103463876A (en) * | 2013-08-12 | 2013-12-25 | 江苏双盛医疗器械有限公司 | Secondary filtering apparatus of oxygenerator |
| CN104353315A (en) * | 2014-11-03 | 2015-02-18 | 侨健新能源科技（苏州）有限公司 | Flue gas treatment device |
| CN106335033A (en) * | 2016-08-24 | 2017-01-18 | 浙江宏泰工程项目管理有限公司 | Lifting, shock-isolating and falling-preventing perforating machine provided with telescope for building detection |
| CN107051189A (en) * | 2017-01-23 | 2017-08-18 | 中夏新能源（上海）有限公司 | Air cleaning device and its robot |
| CN107155275A (en) * | 2017-07-01 | 2017-09-12 | 郑州职业技术学院 | The adjustable server cabinet of dedusting area |
| CN108786313A (en) * | 2018-06-21 | 2018-11-13 | 河南师范大学 | A kind of adjustable air purification instrument of intelligence |
| CN111927780A (en) * | 2020-08-03 | 2020-11-13 | 佳艾普科技(江苏)有限公司 | High-performance novel screw air compressor |
| WO2022022453A1 (en) * | 2020-07-29 | 2022-02-03 | The University Of Hong Kong | Reusable nanocomposite porous filter for highly efficient air filtration |
-
2003
- 2003-06-06 CN CN 03140730 patent/CN1233442C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319626C (en) * | 2005-01-11 | 2007-06-06 | 佛山市顺德区阿波罗环保器材有限公司 | Production of colouring air filter |
| CN101869798A (en) * | 2009-04-23 | 2010-10-27 | 厦门市宇洲环保科技有限公司 | Mobile exhaust air adsorbing purification device |
| CN101972580A (en) * | 2010-07-28 | 2011-02-16 | 苏州顶裕节能设备有限公司 | Device for reducing pressure damage on activated carbon adsorption tower |
| CN103463876A (en) * | 2013-08-12 | 2013-12-25 | 江苏双盛医疗器械有限公司 | Secondary filtering apparatus of oxygenerator |
| CN104353315A (en) * | 2014-11-03 | 2015-02-18 | 侨健新能源科技（苏州）有限公司 | Flue gas treatment device |
| CN104353315B (en) * | 2014-11-03 | 2016-08-24 | 国电康能科技股份有限公司 | A kind of flue gas processing device |
| CN106335033A (en) * | 2016-08-24 | 2017-01-18 | 浙江宏泰工程项目管理有限公司 | Lifting, shock-isolating and falling-preventing perforating machine provided with telescope for building detection |
| CN107051189A (en) * | 2017-01-23 | 2017-08-18 | 中夏新能源（上海）有限公司 | Air cleaning device and its robot |
| CN107155275A (en) * | 2017-07-01 | 2017-09-12 | 郑州职业技术学院 | The adjustable server cabinet of dedusting area |
| CN107155275B (en) * | 2017-07-01 | 2019-05-17 | 郑州职业技术学院 | The adjustable server cabinet of dedusting area |
| CN108786313A (en) * | 2018-06-21 | 2018-11-13 | 河南师范大学 | A kind of adjustable air purification instrument of intelligence |
| WO2022022453A1 (en) * | 2020-07-29 | 2022-02-03 | The University Of Hong Kong | Reusable nanocomposite porous filter for highly efficient air filtration |
| CN111927780A (en) * | 2020-08-03 | 2020-11-13 | 佳艾普科技(江苏)有限公司 | High-performance novel screw air compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1233442C (en) | 2005-12-28 |
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