CN111197825B - Filter equipment based on electrically conductive filter screen - Google Patents
Filter equipment based on electrically conductive filter screen Download PDFInfo
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- CN111197825B CN111197825B CN201811372195.7A CN201811372195A CN111197825B CN 111197825 B CN111197825 B CN 111197825B CN 201811372195 A CN201811372195 A CN 201811372195A CN 111197825 B CN111197825 B CN 111197825B
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- filter screen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Materials (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses a filtering device based on a conductive filter screen, which comprises a conductive filter screen device and a negative ion generating device, wherein the negative ion generating device is positioned at the upstream of the conductive filter screen device on the flow path of gas, the conductive filter screen device comprises a filter screen which is a conductive filter screen, and the filtering device also comprises a gate electrode which is arranged between the negative ion generating device and the conductive filter screen device and can be connected with or disconnected with a positive high-voltage power supply, the filtering device enters a filtering state when the filter screen and the gate electrode are connected with the positive high-voltage power supply, and the filtering device enters an electret state when the filter screen ground and the gate electrode are disconnected with the high-voltage power supply. The electric conductivity of the conductive filter screen is utilized to enhance the filtering effect, and simultaneously, when the electret function is started, the electric conductivity is used as a grounding electrode connected with the ground, so that the unification of the filtering and electret functions is realized on the basis of not increasing the devices; when the ion detector works, the door electrode is electrified to be positive, a fan-shaped ion air curtain is formed between the door electrode and the probe, and the combination effect of negative ions and microparticles in air is enhanced.
Description
Technical Field
The invention relates to the air purification technology, in particular to a filtering device based on a conductive filter screen.
Background
Various harmful substances such as dust, smoke, unpleasant odor, formaldehyde generated by indoor decoration and the like exist in indoor and outdoor air, so that at present, air purifier products in environment-friendly products are more and more favored by people, and the market potential of the air purifier products is very great.
Common air purifiers include an anion air purifier, an ozone air purifier, an ultraviolet air purifier, a photocatalytic air purifier, a plasma air purifier, and various types of purifier combined products combined together. The fireplace with the electrostatic dust removal and purification functions, disclosed in the Chinese patent with the application number of 201410445103.9, comprises a fireplace main body, wherein an air duct is arranged in the fireplace main body, an air inlet and an air outlet are formed in the fireplace main body and correspond to the air duct, the fireplace further comprises an electrostatic filter screen module and a power-off protection device, the electrostatic filter screen module is arranged at the air inlet through a supporting base, the electrostatic filter screen module comprises an electrostatic dust removal device and a dust deposition filter screen, the electrostatic dust removal device adopts the electrostatic dust collection as the basic principle, adopts a negative high-voltage needle point ionization mode to enable particles in the air to be charged with negative charges, and controls current to avoid the generation of ozone; the dust collection module adopts a conductive medium and takes a voltage-resistant insulating electret film with a high dielectric constant as an insulating medium, so that a strong field electrostatic field for electrostatic adsorption is provided for charged dust particles, the safety characteristic of high insulation and voltage resistance is also protected, and the dielectric characteristic of charge storage is provided.
Also as disclosed in the chinese patent with application No. 201620229836.3, a novel open-mounted air return opening type air purifier has a general air return opening shape structure, and can be directly installed, and includes an air return opening, and a purification module connected to a power supply, wherein the purification module is a nano electret micro-electrostatic purification device.
The existing air purification devices generally have the problems of low filtration efficiency and easy failure of the filter screen after long-time use.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a filtering device based on a conductive filter screen, which can improve the filtering efficiency and prolong the service life of the filtering device.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a filter equipment based on electrically conductive filter screen, includes electrically conductive filter screen device and can be connected with negative high voltage power supply's anion generating device, on gaseous flow path, anion generating device is located electrically conductive filter screen device's upper reaches, electrically conductive filter screen device includes the filter screen, the filter screen is electrically conductive filter screen, its characterized in that: the filter device is characterized by further comprising a gate electrode which is arranged between the negative ion generating device and the conductive filter screen device and can be connected with or disconnected from the positive high-voltage power supply, the filter device enters a filtering state when the filter screen and the gate electrode are connected with the positive high-voltage power supply, and the filter device enters an electret state when the filter screen ground and the gate electrode are disconnected from the high-voltage power supply.
Preferably, in order to improve the filtering capacity of particles of PM0.3um in the air and prolong the service life of the filter screen, the filter screen comprises a PET support body, a PP melt-spraying layer and a conductive coating formed by spraying a conductive material on the PET support body, so that the composite conductive filter screen is formed; the conductive filter screen is made of a high-voltage electret, and the capability of filtering particles is remarkably improved through high-voltage static electricity on the surface of the conductive filter screen, so that the particles of PM0.3um in the air are removed; on the other hand, bacteria carried to the surface of the filter screen can be killed in time, secondary harm is prevented, the service life of the filter screen can be prolonged, and the filter screen is green and environment-friendly.
For increase area of contact, promote the filter effect, the filter screen is the rugosity, the electrically conductive coating of filter screen is towards anion generating device.
In order to realize two states of filtration and electret by matching the anion generating device, the anion generating device comprises an anion probe and a high-voltage pack for supplying power to the anion probe, and the high-voltage pack is provided with at least two gears.
In order to enable the contact time of air and an air curtain formed by ion wind to be longer and enable negative ions to be combined with micro-particles in the air more fully, a plurality of through holes arranged at intervals are formed in the door electrode, each through hole corresponds to one negative ion probe, the head of each negative ion probe is opposite to the door electrode, and a flanging bent towards the direction of the negative ion generating device is arranged at the periphery of each through hole of the door electrode.
Preferably, a vertical distance of 3-4 cm is formed between the flanging of the gate electrode and the head of the corresponding negative ion probe on a gas flow path.
In order to facilitate the arrangement of the negative ion probe, the negative ion generating device further comprises a first frame and a conducting strip electrically connected with the negative ion probe, the first frame comprises a hollow outer frame and a supporting strip arranged in the outer frame, the conducting strip is arranged on the supporting strip, and the negative ion probe penetrates through the conducting strip and the supporting strip from one side far away from the door electrode so that the head of the negative ion probe is opposite to the door electrode; the high-voltage pack is electrically connected with the conducting strip so as to supply power to the negative ion probe.
In order to facilitate the arrangement of the conducting strips, each supporting strip is provided with a supporting groove which is sunken from the surface far away from the gate electrode to the direction of the gate electrode, and the conducting strips are arranged in the supporting grooves.
In order to provide supporting force for the filter screen, the conductive filter screen device further comprises a filter screen frame, and the filter screen frame is wrapped at the periphery of the filter screen.
In order to be insulated from the whole machine, the conductive filter screen device further comprises a second frame made of an insulating material, and the filter screen frame are clamped inside the second frame.
Compared with the prior art, the invention has the advantages that: the electric conductivity of the conductive filter screen is utilized to enhance the filtering effect, and simultaneously, when the electret function is started, the electric conductivity is used as a grounding electrode connected with the ground, so that the unification of the filtering and electret functions is realized on the basis of not increasing the devices; when the ion detector works, the door electrode is electrified to be positive, a fan-shaped ion air curtain is formed between the door electrode and the probe, and the combination effect of negative ions and microparticles in air is enhanced.
Drawings
FIG. 1 is a schematic structural diagram of a filter device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an anion generating device of the filter device according to the embodiment of the invention;
FIG. 3 is an exploded view of the negative ion generator of the filter device according to the embodiment of the present invention;
FIG. 4 is a schematic structural view of a composite screen assembly of a filtration apparatus according to an embodiment of the present invention;
FIG. 5 is an exploded view of a composite screen assembly of a filter assembly according to an embodiment of the present invention;
fig. 6 is a schematic partial exploded view of a screen of a composite screen device of a filtering device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Referring to fig. 1, a filtering apparatus based on a conductive filter screen includes an anion generating apparatus 1, a conductive filter screen apparatus 2, and a gate electrode 3, which may be disposed in a predetermined duct in a purifying device such as an air purifier, and on a flow path of gas, the anion generating apparatus 1 is located upstream of the conductive filter screen apparatus 2, and the gate electrode 3 is located between the anion generating apparatus 1 and the conductive filter screen apparatus 2.
Referring to fig. 2 and 3, the negative ion generating device 1 includes a first frame 11, a high voltage pack 12, a conductive sheet 13, and a negative ion probe 14. The first frame 11 includes a hollow outer frame 111, and support bars 112 disposed in the outer frame 111, in this embodiment, the outer frame 111 is cylindrical with openings at two ends in the axial direction, the number of the support bars 112 is four, the support bars include three longitudinally extending support bars and one transversely extending support bar, and two ends of each support bar 112 extend to the inner side wall of the outer frame 111 respectively. The high-pressure bag 12 is disposed on the outer frame 111 and has at least two gears, and in this embodiment, a two-gear high-pressure bag is adopted.
Each support bar 112 has a support groove 113 recessed from the surface away from the gate electrode 3 toward the gate electrode 3. A negative ion probe 114 is arranged in each supporting groove 113, and preferably, three negative ion probes 14 are uniformly arranged in each supporting groove 113, and the number of the negative ion probes is 9 (the negative ion probes 14 at the intersection of the supporting grooves 113 are shared). Each support groove 113 is further provided with one of the conductive sheets 13, and the negative ion probe 14 penetrates through the corresponding conductive sheet 13 and is electrically connected with the conductive sheet 13. The head of the negative ion probe 14 passes through the support bar 112 from the side of the first frame 11 away from the gate electrode 3 toward the gate electrode 3. In the present embodiment, the conductive sheets 13 are copper sheets, the conductive sheets 13 extending in the transverse direction are electrically connected to the conductive sheets 13 extending in the longitudinal direction at the staggered positions, respectively, and one of the conductive sheets 13 extending in the longitudinal direction is electrically connected to the high voltage package 12, so as to electrically connect the negative ion probe 14 and the high voltage package 12. Therefore, the high-voltage package 12 can provide three gears of 3kv positive and negative pressure and 10kv negative pressure for the negative ion probe 14.
The gate electrode 3 is cylindrical as a whole and is fitted to the first frame 11 of the negative ion generating device 1. The gate electrode 3 is provided with a plurality of through holes 31 arranged at intervals, and each through hole 31 corresponds to one negative ion probe 14. The gate electrode 3 has a turned-up edge 32 bent toward the negative ion generating device 1 at a position around each through hole 31. The flanging 32 of the gate electrode 3 and the head of the corresponding negative ion probe 14 have a vertical distance (on the flow path of the gas) of 3-4 cm. When the filtering function of the filtering device is started, the gate electrode 3 is connected with positive voltage (external high-voltage power supply), and when the electret function is started, the gate electrode 3 is disconnected.
Referring to fig. 4 and 5, the conductive filter screen device 2 includes a second frame 21, a filter screen 22, and a filter screen frame 23, which are all cylindrical in this embodiment, to be fitted with the negative ion generating device 1. The second frame 21 may be of an integral structure, or as shown in the present embodiment, the second frame 21 may be formed by connecting two sub-frames, including a first sub-frame 211 and a second sub-frame 212, and the two sub-frames are coaxial and at least partially overlapped in front and back (front and back refer to the direction of the fluid flow path, and front is upstream and back is downstream) to form a complete second frame 21. The second frame 21 is made of an insulating material, such as ABS plastic, to ensure an insulating relationship with the surrounding complete machine (decontamination apparatus).
The filter 22 is a conductive filter, which is formed by spraying a layer of conductive material on the basis of the conventional HEPA filter to make it conductive without damaging its original filtering efficiency, and then folding it into a cylindrical structure, such as a cylinder (described in detail below). The filter screen 22 may be an existing conductive filter screen, or a conductive filter screen manufactured by the manufacturing method of the present invention. The filter screen frame 23 is wrapped on the periphery of the side wall of the filter screen 22. Screen frame 23 provides support strength for screen 22. The filter 22 and the filter frame 23 are engaged with each other inside the second frame 21, and when the filter is mounted, the surface of the filter 22 on which the conductive material is sprayed is placed in the direction toward the negative ion generator 1 (i.e., in the direction facing the gas flow).
Referring to fig. 6, the screen 22 includes a PET support 221, a PP meltblown layer 222, and a conductive coating 223, which are combined to form a conductive HEPA screen. Specifically, the method comprises the following steps:
preparing antibacterial conductive coating
Mixing and mixing the graphene slurry, deionized water and waterborne polyurethane according to a ratio, and stirring for 1-4 h; dropwise adding a defoaming agent while stirring, wherein the addition amount of the defoaming agent is 0.05-1% of the total weight of the graphene slurry, the deionized water and the waterborne polyurethane; the defoaming agent in the embodiment is defoaming agent BYK 019.
Then adding nano silver ions and chitin solution, and continuously stirring uniformly to obtain the antibacterial conductive coating;
nano silver ion: chitin solution: graphene slurry: deionized water: the proportion of the waterborne polyurethane is 1.5:4:21:21: 7-3: 10:21:21: 21;
the graphene slurry is a deionized water mixture with the solid content of graphene being 2.5 wt%; the viscosity of the graphene slurry is 0.03 pa.s; the viscosity of the aqueous polyurethane was 0.01 pa.s.
The chitin solution is a commercially available chitin finishing agent SAL 6680.
The nano silver ion is a commercial nano silver antibacterial finishing agent SILV 9700.
② preparing filter paper
Placing the PET support 221 and the PP melt-blown layer 222 on two different conveyor belts, wherein the PET support 221 is subjected to glue dispensing through a nozzle of a glue gun, and the PET support 221 is subjected to glue dispensing through the glue gun, wherein the glue dispensing amount is 5g/m2(ii) a The PET support body 221 after the glue dispensing is adhered with the PP melt-blown layer 222 on the other conveyor belt, and after the adhesion is finished, the PET support body enters a press roll to be pressed firmly to form a fiber filter screen at the same time, and the fiber filter screen is rolled into a coiled material for standby.
The PET support 221 used in this example had a grammage of 70g/m2The PET fiber fabric of (1); the PP meltblown layer 222 is a PP nonwoven meltblown with a filament diameter of 15 microns;
preparing composite conductive filter screen
Coating the antibacterial conductive coating prepared in the first step on the surface of the PET support body 221 prepared in the second step to form a conductive coating 223, wherein the thickness of the coating is 1-5 microns, and thus obtaining filter paper; and folding the filter paper by a conventional method to obtain the composite conductive filter screen with antibacterial and conductive properties, wherein the conductive coating 223 faces outwards in the folding process.
The composite conductive filter screen prepared by the method is made of high-voltage electret, and the capability of filtering particles is obviously improved through high-voltage static electricity on the surface of the conductive filter screen, so that the particles of PM0.3um in the air are removed; on the other hand, bacteria carried to the surface of the filter screen can be killed in time, secondary harm is prevented, the service life of the filter screen can be prolonged, and the filter screen is green and environment-friendly.
Under the working state of filtration, high-voltage bag 12 switches on minus 3kv high voltage, because anion probe 14 and high-voltage bag 12 are electrically connected, anion probe 14 ionizes under high voltage to generate negative ions, and simultaneously gate electrode 3 switches on plus 3kv high voltage, centrifugal wind is formed between anion probe 14 and gate electrode 3, because the distance between gate electrode 3 and the head of anion probe 14 and the area of flanging 32 are larger, the contact time of the air curtain formed by air and ion wind is longer, and the combination of negative ions and microparticles in the air is more sufficient. Meanwhile, the filter screen 22 is connected with positive 3kv high voltage electricity, microparticles combined with negative ions are attracted by the filter screen 22 connected with positive electricity, and the filtering efficiency is greatly improved due to the filtering function of the original filter screen.
Along with the increase of the filtering time, the filtering efficiency is gradually reduced until the filtering efficiency is invalid, at the moment, the filtering efficiency of the filter screen is restored through the electret restoration function of the door electrode 3, the electret mode is started after the filter screen is invalid, when the electret state is started, the negative ion probe 14 is connected with negative 10kv high voltage through the high voltage pack 12, the door electrode 3 is not electrified, the conductive coating 223 of the filter screen 22 is grounded to provide a grounding electrode required by the electret process, and therefore the electret function is achieved, and the filtering efficiency of the filter screen is restored.
The filter device disclosed by the invention adopts the composite conductive filter screen, combines the advantages of the negative ion active adsorption technology and the electrostatic adsorption technology, utilizes the combination of negative ions generated by the negative ion generating device and particles to form particles with larger particle size, meanwhile, the filter screen is positively charged by the composite technology on the basis of the original HEPA filter screen, the positive electricity of the filter screen and the negative ions form an ion flow, and microparticles are better absorbed by the filter screen under the drive of the fan and the ion flow. The composite conductive filter screen technology can greatly improve the absorption of the HEPA filter screen to particles with particle sizes of pm less than 0.3.
Claims (10)
1. The utility model provides a filter equipment based on electrically conductive filter screen, includes electrically conductive filter screen device (2) and can be connected anion generating device (1) with negative high voltage power supply, on gaseous flow path, anion generating device (1) is located the upper reaches of electrically conductive filter screen device (2), electrically conductive filter screen device (2) include filter screen (22), filter screen (22) are electrically conductive filter screen, its characterized in that: still including setting up door electrode (3) between negative ion generating device (1) and electrically conductive filter screen device (2), can be connected or break off with positive high voltage power supply, filter equipment gets into the filtration state when filter screen (22) and door electrode (3) switch on positive high voltage power supply, filter equipment gets into the electret state when filter screen (22) ground connection, door electrode (3) and high voltage power supply break off.
2. The conductive screen-based filtration device of claim 1, wherein: the filter screen (22) comprises a PET support body (221), a PP melt-blown layer (222) and a conductive coating (223) formed by spraying a conductive material on the PET support body (221), so that the composite conductive filter screen is formed.
3. The conductive screen-based filtration device of claim 2, wherein: the filter screen (22) is folded, and the conductive coating (223) of the filter screen (22) faces the negative ion generating device (1).
4. The conductive screen-based filtration device of claim 1, wherein: the negative ion generating device (1) comprises a negative ion probe (14) and a high-voltage pack (12) for supplying power to the negative ion probe (14), wherein the high-voltage pack (12) is provided with at least two gears.
5. The conductive screen-based filtration device of claim 4, wherein: the door electrode (3) is provided with a plurality of through holes (31) which are arranged at intervals, each through hole (31) corresponds to one negative ion probe (14), the head part of each negative ion probe (14) is opposite to the door electrode (3), and the door electrode (3) is provided with a flanging (32) which is bent towards the direction of the negative ion generating device (1) at the periphery of each through hole (31).
6. The conductive screen-based filtration device of claim 5, wherein: and a vertical distance of 3-4 cm is formed between the flanging (32) of the gate electrode (3) and the head of the corresponding negative ion probe (14) on a gas flow path.
7. The conductive screen-based filtration device of claim 4, wherein: the negative ion generating device (1) further comprises a first frame (11) and a conducting strip (13) electrically connected with the negative ion probe (14), the first frame (11) comprises a hollow outer frame (111) and a supporting strip (112) arranged in the outer frame (111), the conducting strip (13) is arranged on the supporting strip (112), and the negative ion probe (14) penetrates through the conducting strip (13) and the supporting strip (112) from one side far away from the gate electrode (3) so that the head of the negative ion probe (14) is opposite to the gate electrode (3); the high-voltage pack (12) is electrically connected with the conducting strip (13) so as to supply power to the negative ion probe (14).
8. The conductive screen-based filtration device of claim 7, wherein: each supporting strip (112) is provided with a supporting groove (113) which is sunken from the surface far away from the gate electrode (3) to the direction of the gate electrode (3), and the conducting strip (13) is arranged in the supporting groove (113).
9. The conductive screen-based filtering device of any one of claims 1 to 8, wherein: electrically conductive filter screen device (2) still include filter screen frame (23), filter screen frame (23) cladding is in filter screen (22) periphery.
10. The conductive screen-based filtration device of claim 9, wherein: the conductive filter screen device (2) further comprises a second frame (21) made of an insulating material, and the filter screen (22) and the filter screen frame (23) are clamped inside the second frame (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811372195.7A CN111197825B (en) | 2018-11-16 | 2018-11-16 | Filter equipment based on electrically conductive filter screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811372195.7A CN111197825B (en) | 2018-11-16 | 2018-11-16 | Filter equipment based on electrically conductive filter screen |
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| CN111197825A CN111197825A (en) | 2020-05-26 |
| CN111197825B true CN111197825B (en) | 2021-10-29 |
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| CN201811372195.7A Active CN111197825B (en) | 2018-11-16 | 2018-11-16 | Filter equipment based on electrically conductive filter screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111686936B (en) * | 2019-03-14 | 2022-09-30 | 宁波方太厨具有限公司 | Air filter screen purifier |
| CN114963381A (en) * | 2022-07-27 | 2022-08-30 | 华北理工大学 | Ventilation unit is used in ward |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003211023A (en) * | 2002-01-18 | 2003-07-29 | Mitsubishi Electric Corp | Dust collecting element |
| GB2533466A (en) * | 2015-10-22 | 2016-06-22 | Darwin Tech Int Ltd | Air cleaning device |
| JP2017121278A (en) * | 2016-01-05 | 2017-07-13 | タイセイエンター株式会社 | Air cleaner |
| CN207786233U (en) * | 2017-12-27 | 2018-08-31 | 宁波方太厨具有限公司 | A kind of particulate collection device |
| CN207592064U (en) * | 2017-12-27 | 2018-07-10 | 宁波方太厨具有限公司 | A kind of microparticle purifier based on electric coagulating technique |
| CN207667830U (en) * | 2017-12-27 | 2018-07-31 | 宁波方太厨具有限公司 | Collection device and application have the air cleaning unit of the collection device |
| CN108607688A (en) * | 2018-05-18 | 2018-10-02 | 同济大学 | A kind of fresh air purification device in electrode |
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