CN2669962Y - Even flow high efficiency filter - Google Patents
Even flow high efficiency filter Download PDFInfo
- Publication number
- CN2669962Y CN2669962Y CNU2003201242344U CN200320124234U CN2669962Y CN 2669962 Y CN2669962 Y CN 2669962Y CN U2003201242344 U CNU2003201242344 U CN U2003201242344U CN 200320124234 U CN200320124234 U CN 200320124234U CN 2669962 Y CN2669962 Y CN 2669962Y
- Authority
- CN
- China
- Prior art keywords
- high efficiency
- uniform flow
- damping layer
- filter paper
- framework
- 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
Links
- 238000013016 damping Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 abstract 2
- 239000004745 nonwoven fabric Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a uniform flow high efficiency filter has increased the uniform flow damping layer that the one deck was made by non-woven fabrics or low resistance material before the air-out face of this filter to make damping layer and filter paper keep certain space to form a static pressure case, make the inhomogeneous low-speed air current that comes out by filter paper fully mix in the static pressure case, pass through the damping layer at the uniform velocity again, make the homogeneity of air-out face wind speed reach within 20%.
Description
Technical field
The utility model relates to a kind of high efficiency particulate air filter.
Background technology
The various super high efficient filters that high efficiency particulate air filter and efficient 〉=99.9%@0.5 μ m is above, be clean room must use equipment, generally be made up of efficient or ultra high efficiency filter paper, framework, web plate, it provides clean environment more than hundred grades for industries such as electronics, medicine.
In order in clean environment more than 100 grades, to form uniform parallel airflow, China's standard and IEST standard all have strict demand to the air-flow collimation and the wind speed uniformity of cleaning apparatus, regulation among China standard JG/T19-1999 " laminar flow bench check standard ", require each test point should mean wind speed ± 20% scope in.The IEST-0062 standard has following regulation to wind speed:
1. the air speed value of adjacent point-to-point transmission, gap can not be greater than 20%;
2. the mean wind speed that records, should design specification ± 5% in;
3. the relative standard deviation should be in ± 15%.
Existing various high efficiency particulate air filter products on the market, the uniformity of its outlet air surface air-flow all rely on the uniformity of used filter paper to decide.Therefore, can't avoid following shortcoming:
1. the thickness of the filter paper of selling is roughly 0.3mm ± 0.01～± 0.03 on the market, and with regard to individual filter paper, its uniformity is more than ± 3%;
2. consider on the filter paper difference of density everywhere again, and the randomness in the paper folding process and the difference that produces, the wind speed of each point is very inhomogeneous on the filter outlet air surface, differs several times sometimes;
3. even same batch filter, the distribution of same test point position wind speed size does not have something in common yet between each filter;
4. if the air-flow instability before the high efficiency particulate air filter in the cleaning equipment, the test value of some point also is very unsettled on the filter wind speed test surfaces, can change in 1-2 scope doubly.
Filter with above-mentioned defective uses when 100 grades of other clean rooms of higher level, can not form parallel airflow vertically downward, and will be eddy current, the dust that produces in the production process can not be got rid of rapidly, thereby influence product quality.
Manufacturer is inhomogeneous to the wind speed of high efficiency particulate air filter both at home and abroad at present, and general way is to install the even flow plate made from the punching web plate on the filter outlet air surface additional, and the limitation of this way is:
1. can only be used in some bigger cleaning apparatus, as workbench, and effect is bad;
2. for the mini-plant of some compact conformations,, be subjected to spatial constraints, difficult the installation as FFU (blower fan filtering unit).
Summary of the invention
The purpose of this utility model is: a kind of uniform flow high efficiency particulate air filter is provided, increased the uniform flow damping layer that one deck is made by nonwoven or low-resistance material before the outlet air surface of this filter, and the space that makes damping layer and filter paper keep certain forms a plenum chamber, the inhomogeneous low speed flow that is come out by filter paper is fully mixed in plenum chamber, pass through damping layer more at the uniform velocity, the uniformity of outlet air surface wind speed is reached ± 20% in.
The technical solution of the utility model is: a kind of uniform flow high efficiency particulate air filter, comprise high efficiency filter paper, framework, web plate, and the uniform flow damping layer is equipped with in the web plate inboard before the described high efficiency filter paper outlet air surface.
The further technical scheme of the utility model is: a kind of uniform flow high efficiency particulate air filter, comprise high efficiency filter paper, framework, web plate, and the uniform flow damping layer is equipped with in the web plate inboard before the described high efficiency filter paper outlet air surface; One section space length is arranged between described high efficiency filter paper and the uniform flow damping layer, form plenum chamber.
The more detailed technical scheme of the utility model is: a kind of uniform flow high efficiency particulate air filter, comprise high efficiency filter paper, framework, web plate, and the uniform flow damping layer is equipped with in the web plate inboard before the described high efficiency filter paper outlet air surface; One section space length is arranged between described high efficiency filter paper and the uniform flow damping layer, form plenum chamber; Described uniform flow damping layer is made of nonwoven or with the similar low-resistance material of nonwoven.
Framework in the technique scheme can be a monolithic construction, and high efficiency filter paper, uniform flow damping layer and web plate are installed in the same framework.
Framework in the technique scheme also can be a split-type structural, and high efficiency filter paper is installed in the framework, and uniform flow damping layer and web plate are installed in another framework, and two frameworks are combined into a high efficiency particulate air filter.
The utility model has the advantages that:
1. after the air-flow that comes out from efficient filter paper will obtain mixing plenum chamber, behind the damping layer uniform flow, flow out again, therefore, can reduce requirement, comprise the uniformity of thickness and density efficient filter paper.
2. the stable reading of each measuring point, fluctuation range is little.
3. the wind speed good uniformity on the high efficiency particulate air filter outlet air surface can be up to state standards well.
4. simple in structure, can be made into monoblock type or detachable high efficiency particulate air filter, easy to use, be specially adapted to cleaning apparatus simple in structure, as FFU (blower fan filtering unit).
5. damping layer is made by nonwoven or other analog material, does not produce dirt, and can filter out the glass that comes off on the glass filter.
6. cost is low, and can save the even flow plate made from the punching web plate on original cleaning apparatus.
Description of drawings
The utility model will be further described below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present utility model;
Wherein: 1 high efficiency filter paper; 2 frameworks; 3 plenum chambers; 4 uniform flow damping layers; 5 web plates.
The specific embodiment
Embodiment: as shown in Figure 1, a kind of uniform flow high efficiency particulate air filter, high efficiency filter paper 1 is contained in the framework 2 of high efficiency particulate air filter, uniform flow damping layer 4 is housed before the outlet air surface of high efficiency filter paper 1, uniform flow damping layer 4 usefulness nonwoven or make with the nonwoven materials similar, be provided with space length between high efficiency filter paper 1 and the uniform flow damping layer 4, form plenum chamber 3, web plate 5 is housed before the uniform flow damping layer 4, this web plate 5 plays a part to support uniform flow damping layer 4, is plenum chamber 3 between high efficiency filter paper 1 and uniform flow damping layer 4.The utility model can make the inhomogeneous air-flow that is come out by high efficiency filter paper 1 fully mixed in plenum chamber 3, thereby makes the air-flow at high efficiency particulate air filter outlet air surface place even.
Framework 2 in the utility model can be monolithic construction, also can be split-type structural, and during split, high efficiency filter paper 1 is installed in the framework, and uniform flow damping layer 4 and web plate 5 are contained in another framework, and two frameworks are combined into high efficiency particulate air filter.
Claims (5)
1. a uniform flow high efficiency particulate air filter comprises high efficiency filter paper (1), framework (2), web plate (5), it is characterized in that: uniform flow damping layer (4) is equipped with in web plate (5) inboard before described high efficiency filter paper (1) outlet air surface.
2. uniform flow high efficiency particulate air filter according to claim 1 is characterized in that: between described high efficiency filter paper (1) and the uniform flow damping layer (4) one section space length is arranged, form plenum chamber (3).
3. uniform flow high efficiency particulate air filter according to claim 1 is characterized in that: described uniform flow damping layer (4) is made of nonwoven or with the similar low-resistance material of nonwoven.
4. uniform flow high efficiency particulate air filter according to claim 1 and 2 is characterized in that: described framework (2) is a monolithic construction, and high efficiency filter paper (1), uniform flow damping layer (4) and web plate (5) are installed in the same framework (2).
5. uniform flow high efficiency particulate air filter according to claim 1 and 2, it is characterized in that: described framework (2) is a split-type structural, high efficiency filter paper (1) is installed in the framework (2), uniform flow damping layer (4) and web plate (5) are installed in another framework (2), and two frameworks (2) are combined into a high efficiency particulate air filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201242344U CN2669962Y (en) | 2003-12-31 | 2003-12-31 | Even flow high efficiency filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201242344U CN2669962Y (en) | 2003-12-31 | 2003-12-31 | Even flow high efficiency filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669962Y true CN2669962Y (en) | 2005-01-12 |
Family
ID=34476611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201242344U Expired - Fee Related CN2669962Y (en) | 2003-12-31 | 2003-12-31 | Even flow high efficiency filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669962Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972765A (en) * | 2010-08-31 | 2011-02-16 | 苏州安泰空气技术有限公司 | Micro-air-velocity uniform air flow forming device for cleaning equipment |
| CN105178645A (en) * | 2015-09-11 | 2015-12-23 | 无锡零界净化设备有限公司 | Negative pressure weighing chamber |
| CN111765619A (en) * | 2020-07-03 | 2020-10-13 | 深圳市旷世伟业工程有限公司 | Central air conditioner noise reduction structure and method thereof |
-
2003
- 2003-12-31 CN CNU2003201242344U patent/CN2669962Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972765A (en) * | 2010-08-31 | 2011-02-16 | 苏州安泰空气技术有限公司 | Micro-air-velocity uniform air flow forming device for cleaning equipment |
| CN105178645A (en) * | 2015-09-11 | 2015-12-23 | 无锡零界净化设备有限公司 | Negative pressure weighing chamber |
| CN105178645B (en) * | 2015-09-11 | 2017-12-12 | 无锡零界净化设备股份有限公司 | Negative pressure weighing room |
| CN111765619A (en) * | 2020-07-03 | 2020-10-13 | 深圳市旷世伟业工程有限公司 | Central air conditioner noise reduction structure and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11458427B2 (en) | Fine fiber filter media and processes | |
| Bao et al. | Verification of slip flow in nanofiber filter media through pressure drop measurement at low-pressure conditions | |
| Montgomery et al. | Impact of relative humidity on HVAC filters loaded with hygroscopic and non-hygroscopic particles | |
| US4323374A (en) | Air filter assembly | |
| EP0705412B1 (en) | Air purifying apparatus | |
| JP6831494B2 (en) | air conditioner | |
| CN1242070A (en) | Air treatment device | |
| CN2669962Y (en) | Even flow high efficiency filter | |
| CN1326504A (en) | Portable air-borne bacteria sampler | |
| Zhang et al. | Energy consumption performance optimization of PTFE HEPA filter media during dust loading through compositing them with the efficient filter medium | |
| Dziubak | Performance characteristics of air intake pleated panel filters for internal combustion engines in a two-stage configuration | |
| DE112014004862T5 (en) | Pressurized airflow fan operated filtration device | |
| US5395429A (en) | Diffusion panel for use in ultra-clean environments and method for employing same | |
| KR20210031807A (en) | A cylindric filter device, a manufacturing method and an usage of the same, and a filter system having the same | |
| US2812038A (en) | Gas filter | |
| KR102271131B1 (en) | Air cleaner with increased alien substance capture efficiency and decreased air drainage system differential pressure | |
| CN208675631U (en) | A kind of positive-pressure explosion-proof control splicing cabinet | |
| JP3098216B2 (en) | Fan filter unit drive monitoring device for clean room for semiconductor device manufacturing | |
| Zhao et al. | Filtration performance of novel microfibrous media embedded with nanofiber flocs for aerosol particle removal | |
| CN205678809U (en) | A kind of sand-proof energy-saving fresh air filtration system being easy to safeguard | |
| Wu et al. | Effect of Pleat Structure on the Air Purification Performance of a Polytetrafluoroethylene/Poly (ethylene terephthalate) Composite Membrane Filter | |
| CN104154610A (en) | Modular air handling unit | |
| SE1951541A1 (en) | Pleated filter element for air filter | |
| Hubbard et al. | High Air-Flow Aerosol Filtration Testing. | |
| CN218166336U (en) | A dustproof filter screen for being convenient for maintain of filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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 |