CN114870997A - Electret corrugated dust collecting electrode and manufacturing method thereof - Google Patents
Electret corrugated dust collecting electrode and manufacturing method thereof Download PDFInfo
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- CN114870997A CN114870997A CN202210418365.0A CN202210418365A CN114870997A CN 114870997 A CN114870997 A CN 114870997A CN 202210418365 A CN202210418365 A CN 202210418365A CN 114870997 A CN114870997 A CN 114870997A
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- corrugated
- core
- electret
- dust collecting
- collecting electrode
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- 239000000428 dust Substances 0.000 title claims abstract description 77
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000004049 embossing Methods 0.000 claims description 34
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 239000002216 antistatic agent Substances 0.000 claims description 4
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims description 4
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 2
- 239000012943 hotmelt Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- -1 polypropylene Polymers 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000010954 inorganic particle Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
-
- 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
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Electrostatic Separation (AREA)
Abstract
The invention discloses an electret corrugated dust collecting electrode and a manufacturing method thereof, wherein the electret corrugated dust collecting electrode comprises a corrugated core and a planar core; the planar core is of a electret structure, the wave core and the planar core are stacked, and a gas channel is formed between the wave core and the planar core. The electret corrugated dust collecting electrode can form electrostatic dust collection on the gas passing through the electret corrugated dust collecting electrode, achieves the electrostatic dust collection effect, and realizes flexible use in the environment without a high-voltage power supply.
Description
Technical Field
The invention belongs to the technical field of dust collecting electrodes, and particularly relates to an electret corrugated dust collecting electrode and a manufacturing method thereof.
Background
At present, because the high-resistance characteristic of the HEPA filter screen is not matched with the characteristic of a conventional cross-flow fan of an air conditioner, the air volume of the traditional HEPA (high Efficiency particulate air) filter screen used in the air conditioner can be reduced sharply, and the energy Efficiency performance of the air conditioner is seriously influenced. Meanwhile, for an air conditioner with a dust removal function, an ifd (intense Field direct) type dust collecting electrode is often used. However, the IFD type dust collector is very suitable only for newly installed dust removing devices, and is applied to places where it is inconvenient to install a high voltage power supply, such as a central air conditioning system which has been already finished, a general air conditioner, and a ventilation device.
Disclosure of Invention
In view of the above problems, the present invention discloses an electret corrugated dust collecting electrode and a method for manufacturing the same, which overcomes or at least partially solves the above problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electret corrugated dust collecting electrode comprises a corrugated core and a planar core; the planar core is of a electret structure, the wave core and the planar core are stacked, and a gas channel is formed between the wave core and the planar core.
Preferably, the planar core is a biaxially oriented polypropylene film with a hollow structure and embossed on one side, and contains no antistatic agent and inorganic particle filler.
Further preferably, the embossings of the planar wick are arranged in a direction perpendicular to the gas channel.
Further preferably, the embossings of the planar core are equally spaced parallel embossings.
Preferably, at least one surface of the wave-shaped core is provided with embossments.
Further preferably, the embossings of the wave-shaped core are arranged in a direction perpendicular to the gas channel.
Further preferably, the embossings of the wave-shaped core are equally spaced parallel embossings.
It is further preferable that a plurality of the wave cores and a plurality of the planar cores are included, and the wave cores and the planar cores are alternately stacked in this order.
A method for manufacturing an electret corrugated dust collecting electrode is used for manufacturing the electret corrugated dust collecting electrode, and comprises the following specific operations: and stacking and fixedly connecting the corrugated core and the plane core, and cutting along the direction vertical to the gas channel to obtain the sheet electret corrugated dust collecting electrode with a certain thickness.
Preferably, the corrugated core and the planar core are made of low-melting-point film materials, and the corrugated core and the planar core are stacked and then cut in a hot-melting cutting mode to obtain the sheet electret corrugated dust collecting electrode with a certain thickness.
In the electret corrugated dust collecting electrode, the corrugated core and the plane core are stacked, so that a gas channel for gas to pass through is formed between the corrugated core and the plane core, and the plane core is designed into a permanent electric body structure, so that electrostatic dust collection can be formed on the gas passing through, an electrostatic dust collection effect is achieved, and flexible use in a non-high-voltage power supply environment is realized.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic view of a partial configuration of an electret corrugated dust collecting electrode along a first viewing angle in the present embodiment;
fig. 2 is a schematic view of a partial external configuration of the electret corrugated dust collecting electrode in the second viewing angle of the present embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, the invention discloses an electret corrugated dust collecting electrode, which comprises a corrugated core 1 and a planar core 2. Wherein the planar core 2 is of a permanent electrical body structure, the corrugated core 1 and the planar core 2 are stacked, and a gas passage 3 is formed between the corrugated core 1 and the planar core 2 for gas to pass through the electret corrugated dust collecting electrode.
At this moment, through adopting wave form core and plane core to pile up the setting, utilize the wave form core to provide the support to the plane core and fix to form the gas passage who is used for gaseous to pass between wave form core and plane core, and with the plane core design for the permanent electricity body structure, thereby can form electrostatic precipitation to the gas that passes, reach the electrostatic precipitator effect, realize the nimble use in no high voltage power environment.
In the electret corrugated dust collecting electrode of the present embodiment, a plurality of corrugated cores 1 and a plurality of planar cores 2 are provided, and the corrugated cores 1 and the planar cores 2 are alternately stacked in this order, thereby forming an electret corrugated dust collecting electrode having a certain dust removing area. In different embodiments, the number and specific shape of the corrugated cores and the planar cores can be adjusted according to different application and use environments of the electret corrugated dust collecting electrode, so that the use requirements of different environments are met.
Preferably, in this embodiment, the planar core is a biaxially oriented polypropylene film having a hollow structure and embossed on one side thereof, and contains no antistatic agent and an inorganic particulate filler. At the moment, through choosing biaxial stretching polypropylene film as the plane core, not only can be in stretching the in-process by the induced similar "lens" column structure that forms of inorganic particle, thereby distribute in different positions by a plurality of this "lens" structures and form similar "thousand layers of cake" structure, like this in the electret charging process, because this "lens" structure is similar to the plate capacitor, consequently can play the effect of preserving electric charge, and a plurality of this structures then can be approximately equivalent for a plurality of parallel plate capacitors that are established ties in the membrane, and can also make this electret flute form dust collecting pole can carry out the washing processing, treat after moisture volatilizees still can better recovery filtration performance, thereby satisfy the use of high humid environment, improve availability factor and effect.
Specifically, the thickness of the planar core 2 is about 30 to 350 μm, the height of the embossings 21 is 20 to 200 μm, the embossings 21 are arranged in a direction perpendicular to the gas channel 3, and the planar core is provided with a pearlized film. At the moment, the embossing can improve the dust collecting effect, increase the dust containing amount, prolong the replacement and maintenance time and obtain better using effect.
Meanwhile, the corrugated core 1 of the present embodiment is also provided with embossings 11 on both surfaces thereof, and the embossings 11 are also 20 to 200 μm in height and arranged in a direction perpendicular to the gas channel 3. In this way, the dust collecting effect and the dust holding amount of the electret corrugated dust collecting electrode can be further improved by providing the embossing on the surface of the corrugated core, and the use effect can be improved.
Of course, in other embodiments, according to the use requirement and the manufacturing situation, the height of the embossings and the arrangement situation of the embossings on the wavy embossings, such as single-sided embossing, can also be adjusted, so as to meet the corresponding use requirement and effect.
Further, in the embodiment, the embossings on the wave-shaped core and the embossings on the plane core are both designed by adopting the parallel embossings with equal intervals, wherein the interval of the embossings is 100-1000 μm, so that the wave-shaped core and the plane core are convenient to manufacture, the manufacturing difficulty is reduced, and the manufacturing efficiency and the quality are improved. Of course, in other embodiments, the design structure of the embossings may be adjusted and changed, for example, the embossings are designed to be parallel grain structures with unequal intervals, and the intervals between the embossings are gradually increased along the direction of the air passing through the air channel, so that the flow resistance of the tail end of the air channel to the air can be reduced and the fluency of the air passing through the electret corrugated dust collecting electrode can be improved under the condition that the embossings at the front end of the air channel fulfill most of the dust collecting purpose. Even in other embodiments, the embossings can be designed in a non-parallel structure, such as an interdigitated structure or the like.
In the present embodiment, the corrugated core 1 and the planar core 2 are made of a low-melting-point film material, such as a polypropylene film. At this time, in the process of manufacturing the electret corrugated dust collecting electrode in the embodiment, the corrugated core and the planar core can be firstly stacked and placed, and then the stacked corrugated core and the stacked planar core are cut by adopting a hot-melting cutting mode, so that the contact positions of the corrugated core and the planar core can be hot-melted and fixed while the sheet electret corrugated dust collecting electrode with a certain thickness is obtained by utilizing the hot-melting cutting mode, and thus, the manufacturing method can be used for fixing and cutting the corrugated core and the planar core at one time, and the manufacturing efficiency of the electret corrugated dust collecting electrode is greatly improved.
Of course, in other embodiments, the corrugated core may also be made of polyethylene film, and the corrugated core and the planar core may also be stacked and fixedly connected in advance, and then cut in the direction perpendicular to the gas channel according to different usage environments, so as to obtain a sheet-shaped electret corrugated dust collecting electrode with a certain thickness.
Next, the dust collecting efficiency of the electret corrugated dust collecting electrode provided by the invention is tested and compared under different working conditions.
Wherein, in the electret corrugated dust collecting electrode of the embodiment, the corrugated core adopts a polypropylene homogeneous film with texture, the pitch of the texture is about 500 μm, the width of the texture is about 500 μm, the thickness of the film is 300 μm, the embossing protrudes out of the film matrix by about 60 μm, and the height of the corrugated core is about 1.5 mm; the planar core adopts a hollow-structure biaxially oriented polypropylene film with embossing on one side, contains no antistatic agent and inorganic particle filler, and has a density of about 0.6g/cm 3 The film thickness is about 200 μm, one side is covered with embossings with a thickness of about 150 μm, the pitch of the embossings is about 500 μm, the width of the embossings is about 500 μm, and the embossings protrude out of the film substrate by about 50 μm. The corrugated core and the plane core are stacked in a staggered mode and compressed, a nickel-chromium heating wire with the diameter of 0.4mm is used for hot melting and cutting, the heating wire feeding speed is 1.5mm/s, the electret corrugated dust collecting electrode with the sheet thickness specification of 10mm and the electret corrugated dust collecting electrode with the sheet thickness specification of 20mm are obtained respectively, meanwhile, the corona charging voltage of the electret corrugated dust collecting electrode is 45kv, and the time is 30 s.
In the comparative example, a HAF electrostatic air filter screen with a wave height of about 1.5mm in a 3M brand was selected, wherein the sheet thickness specifications were 10mm and 20mm, respectively.
Test one, the example and the comparative example were each subjected to a dust collecting efficiency test at a plane wind speed of 0.1m/s and containing dust of different particle diameters, and the test results as shown in table 1 were obtained:
TABLE 1
Test two, the example and the comparative example were each subjected to a dust collecting efficiency test of gas at a plane wind speed of 1m/s and containing dust of different particle diameters, and the test results as shown in table 2 were obtained:
TABLE 2
As can be seen from table 1 and table 2, when the gas (0.5 μm, 1 μm, 2.5 μm, or 5 μm) containing dust of the same particle size passes through the electret corrugated dust collecting electrode of the example and the HAF electrostatic air filter of the comparative example respectively at the same face wind speed (0.1m/s or 1m/s), the electret corrugated dust collecting electrode of the example has a better dust collecting efficiency and a better dust collecting effect under the condition of the same thickness specification.
Test three, the examples and comparative examples were each subjected to a dust collecting efficiency test of gas at a face wind speed of 1m/s and containing dust having a particle size of 2.5 μm under a sufficient drying treatment after being immersed in water for 10 minutes for different times, and the test results as shown in table 3 were obtained:
TABLE 3
As shown in table 3, in the dust collecting efficiency test after different times of soaking and drying treatments were performed on the electret corrugated dust collecting electrode in the example and the HAF electrostatic air filter screen in the comparative example, under the condition that the thickness specifications were the same, the electret corrugated dust collecting electrode in the example obtained better dust collecting efficiency, and the electret corrugated dust collecting electrode with the thickness of 10mm and the electret corrugated dust collecting electrode with the thickness of 20mm still obtained efficiencies of 7% and 17% respectively in the dust collecting efficiency test for gas at the wind speed of 1m/s plane and containing dust with the particle size of 2.5 μm after 3 times of soaking and drying treatments, and had higher filtering efficiencies in a high humidity environment and after clean water washing.
While the foregoing is directed to embodiments of the present invention, other modifications and variations of the present invention may be devised by those skilled in the art in light of the above teachings. It should be understood by those skilled in the art that the foregoing detailed description is for the purpose of better explaining the present invention, and the scope of the present invention should be determined by the scope of the appended claims.
Claims (10)
1. An electret corrugated dust collecting electrode is characterized by comprising a corrugated core and a planar core; the planar core is of a electret structure, the wave core and the planar core are stacked, and a gas channel is formed between the wave core and the planar core.
2. The electret corrugated dust collecting electrode according to claim 1, wherein the planar core is a biaxially oriented polypropylene film of hollow structure having embossings on one side, and contains no antistatic agent and inorganic particulate filler.
3. The electret corrugated collector electrode of claim 2, wherein the embossing of the planar core is arranged in a direction perpendicular to the gas channel.
4. The electret corrugated collector electrode of claim 2, wherein the planar core is embossed with equally spaced parallel embossings.
5. The electret corrugated dust collecting electrode of claim 1, wherein at least one surface of the corrugated core is embossed.
6. The electret corrugated collector electrode of claim 5, wherein the corrugations of the corrugated core are arranged in a direction perpendicular to the gas channels.
7. The electret corrugated collector electrode of claim 5, wherein the corrugations of the corrugated core are equally spaced parallel corrugations.
8. The electret corrugated dust collecting pole as claimed in any one of claims 1 to 7, comprising a plurality of the corrugated cores and a plurality of the planar cores, and the corrugated cores and the planar cores are alternately stacked in this order.
9. A method for manufacturing an electret corrugated dust collecting electrode, which is characterized in that the method for manufacturing the electret corrugated dust collecting electrode of any one of claims 1 to 8 comprises the following specific operations: and stacking and fixedly connecting the corrugated core and the plane core, and cutting along the direction vertical to the gas channel to obtain the sheet electret corrugated dust collecting electrode with a certain thickness.
10. The manufacturing method of the electret corrugated dust collecting electrode as claimed in claim 9, wherein the corrugated core and the planar core are made of low melting point films, and the corrugated core and the planar core are stacked and then cut by hot-melt cutting to obtain a sheet electret corrugated dust collecting electrode with a certain thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418365.0A CN114870997A (en) | 2022-04-20 | 2022-04-20 | Electret corrugated dust collecting electrode and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418365.0A CN114870997A (en) | 2022-04-20 | 2022-04-20 | Electret corrugated dust collecting electrode and manufacturing method thereof |
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| CN114870997A true CN114870997A (en) | 2022-08-09 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07241491A (en) * | 1994-03-08 | 1995-09-19 | Toyobo Co Ltd | Air cleaning filter |
| JP2001062224A (en) * | 1999-08-31 | 2001-03-13 | Mitsubishi Paper Mills Ltd | Dust removing filter |
| JP2001259320A (en) * | 2000-03-23 | 2001-09-25 | Toyobo Co Ltd | Air cleaning filter |
| JP2004344756A (en) * | 2003-05-21 | 2004-12-09 | Toyobo Co Ltd | Electret filter |
| JP2005218930A (en) * | 2004-02-04 | 2005-08-18 | Toyobo Co Ltd | Dust removal filter |
| WO2015056724A1 (en) * | 2013-10-15 | 2015-04-23 | 株式会社ユポ・コーポレーション | Filter |
| CN111902215A (en) * | 2018-03-30 | 2020-11-06 | 优泊公司 | Electret sheet and filter |
| CN112295737A (en) * | 2019-07-26 | 2021-02-02 | 上海必修福企业管理有限公司 | Charging electrostatic dust collection electrode and particle removing device comprising same |
-
2022
- 2022-04-20 CN CN202210418365.0A patent/CN114870997A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07241491A (en) * | 1994-03-08 | 1995-09-19 | Toyobo Co Ltd | Air cleaning filter |
| JP2001062224A (en) * | 1999-08-31 | 2001-03-13 | Mitsubishi Paper Mills Ltd | Dust removing filter |
| JP2001259320A (en) * | 2000-03-23 | 2001-09-25 | Toyobo Co Ltd | Air cleaning filter |
| JP2004344756A (en) * | 2003-05-21 | 2004-12-09 | Toyobo Co Ltd | Electret filter |
| JP2005218930A (en) * | 2004-02-04 | 2005-08-18 | Toyobo Co Ltd | Dust removal filter |
| WO2015056724A1 (en) * | 2013-10-15 | 2015-04-23 | 株式会社ユポ・コーポレーション | Filter |
| CN105682770A (en) * | 2013-10-15 | 2016-06-15 | 优泊公司 | Filter |
| US20160250649A1 (en) * | 2013-10-15 | 2016-09-01 | Yupo Corporation | Filter |
| CN111902215A (en) * | 2018-03-30 | 2020-11-06 | 优泊公司 | Electret sheet and filter |
| CN112295737A (en) * | 2019-07-26 | 2021-02-02 | 上海必修福企业管理有限公司 | Charging electrostatic dust collection electrode and particle removing device comprising same |
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