A multi-layer electrode membrane air filter

Abstract

The present invention provides a multilayer electrode membrane air filter, which relates to the field of air filters. The multilayer electrode membrane air filter comprises a first substrate, a second substrate, an electrode membrane, and a notch: the first substrate, the second substrate, the electrode membrane and the notch constitute an electrode sheet A; the side end surface of the electrode membrane is provided with an extension membrane, and the first substrate, the second substrate, the electrode membrane and the extension membrane constitute an electrode sheet B; the first substrate and the second substrate are combined to form an electrode sheet, and the electrode membrane is located between the first substrate and the second substrate; the notch on the electrode sheet A is arranged on the side surface of the first substrate. Through the notch on the electrode sheet A or the extension membrane on the electrode sheet B, the charge accumulated on the filter net in the air filter can be discharged smoothly, slowing down the problem of rapid drop in filter efficiency caused by the accumulation and stacking of dust-attached charges, maintaining a high filtration efficiency of the filter net, and extending the cleaning and maintenance cycle of the filter net.

Description

Technical Field

[0001] The invention relates to the technical field of air filters, in particular to a multi-layer electrode membrane air filter. Background Art

[0002] Electrostatic filters come in a variety of sizes and shapes and are used in a wide range of industrial, commercial and domestic applications. For example, in industry they are used to remove suspended particles from the hot exhaust gases of coal-fired power stations. In a wide range of chemical industries they are used to clean both hot and cold air streams. Most commercial applications and all domestic applications of electrostatic filters are used to clean the ambient air of undesirable "pollutant" particles.

[0003] The working principle of electrostatic precipitators is usually two-stage, in the first stage or first section, pollutants or other undesirable particles in the airflow are charged. In the second stage or second section, appropriate filters are used to capture some of the charged particles and remove them from the airflow. The level of capture of the charged particles defines the efficiency of the precipitator, which can typically range from 80% to 99.9%, and these higher efficiencies can be achieved in environments where there are few or no spatial constraints on the location of the precipitator.

[0004] The second stage or second section of electrostatic precipitator usually includes a group of parallel conductive plates (electrodes), which are designed to capture charged particles. Usually the alternating plates of the plate are arranged to operate at a relatively high and relatively low potential. The low potential plate is usually at ground potential, so it is usually referred to as a "ground plate" or "ground electrode". For example, if the high potential plate is powered at, for example, +6kV, and the low potential plate is maintained at ground potential (0kV), then by means of an electric field, the positively charged particles in the air flow passing between the plates will be attracted and move toward the adjacent ground plate, and these positively charged particles are captured at the ground plate. The positive charge on the captured particles will be transferred to the ground plate and flow as a part of the circuit.

[0005] At present, most of the air filters are realized by the principle of electrostatic dust removal. However, due to long-term operation, some existing air filters cause the charge on the filter screen to accumulate and stack, and cannot be released smoothly, thereby reducing the filtration efficiency of the filter screen and also reducing the maintenance cycle of the filter screen cleaning. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the present invention provides a multi-layer electrode membrane air filter, which solves the problem that the charge accumulated on the filter screen in the air filter cannot be discharged smoothly on the electrode piece, slows down the rapid decrease in filter efficiency caused by the accumulation and stacking of dust-attached charge, thereby delaying the cleaning and maintenance cycle of the filter screen.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: A multi-layer electrode membrane air filter, including a first substrate, a second substrate, an electrode membrane, and a notch:

[0010] The first substrate, the second substrate, the electrode film and the notch constitute an electrode sheet A;

[0011] The side end surface of the electrode film is provided with an extension film, and the first substrate, the second substrate, the electrode film and the extension film constitute an electrode sheet B;

[0012] The first substrate and the second substrate are combined to form an electrode sheet, and the electrode film is located between the first substrate and the second substrate;

[0013] The notch on the electrode sheet A is arranged on the side surface of the first substrate, the number of the notch is at least one, and the length, width and number of the notch are not limited.

[0014] Preferably, the notch in the electrode sheet A can be formed by printing composite, co-extrusion or injection molding.

[0015] Preferably, the notch can be provided on one side or both sides of the electrode sheet A.

[0016] Preferably, there are three types of matching relationships between the electrode sheet A and the electrode sheet B, namely, electrode sheet A matches electrode sheet B, electrode sheet A matches electrode sheet A, and electrode sheet B matches electrode sheet B.

[0017] Preferably, the first substrate (1) and the second substrate (2) are made of high-impedance materials, such as ABS\PET\PP\PS or other similar materials, and the electrode sheet is made of metal or conductive plastic.

[0018] Preferably, the electrode sheet A and the electrode sheet B can be used as high potential plates or low potential plates, and the conductive electrode sheet (plastic, metal or composite material) can be used as the low potential plate.

[0019] Preferably, an air filter comprises the electrode sheet A and the electrode sheet B described in any one of the above.

[0020] (III) Beneficial effects

[0021] The present invention provides a multi-layer electrode membrane air filter. It has the following beneficial effects:

[0022] Compared with the prior art, the multi-layer electrode membrane air filter can smoothly discharge the charges accumulated on the filter screen in the air filter through the notches on the electrode sheet A or the extended membrane on the electrode sheet B, thereby slowing down the problem of rapid drop in filter efficiency caused by the accumulation and stacking of charges attached to dust, allowing the filter screen to maintain a high filtration efficiency for a long time and extending the cleaning and maintenance cycle of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure decomposition of the electrode membrane without a notch;

[0024] Figure 2 It is a schematic diagram of the structural decomposition of the electrode sheet A;

[0025] Figure 3 This is a schematic diagram of single-sided slotting of electrode sheet A;

[0026] Figure 4 Schematic diagram of double-sided grooves of electrode sheet A;

[0027] Figure 5 It is a schematic diagram of the structure of electrode sheet B;

[0028] Figure 6 This is a schematic diagram of staggered arrangement of grooves on one side of the electrode sheet;

[0029] Figure 7 Schematic diagram of staggered arrangement of double-sided slots on the electrode sheet;

[0030] Figure 8 It is a schematic diagram of the side cross-sectional structure of the electrode sheet with double-sided grooves arranged in a staggered manner;

[0031] Fig. 9 The schematic diagram of the side cross-sectional structure of the electrode sheet is a co-extruded sheet.

[0032] Among them, 1. first substrate; 2. second substrate; 3. electrode film; 4. notch; 5. extension film. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-9 As shown, an embodiment of the present invention provides a multi-layer electrode membrane air filter, including a first substrate 1, a second substrate 2, an electrode membrane 3, and a notch 4.

[0035] The first substrate 1 , the second substrate 2 , the electrode film 3 and the notch 4 constitute an electrode sheet A.

[0036] The side end surface of the electrode film 3 is provided with an extension film 5 , and the first substrate 1 , the second substrate 2 , the electrode film 3 and the extension film 5 constitute an electrode sheet B.

[0037] The first substrate 1 and the second substrate 2 are combined to form an electrode sheet, and the electrode film 3 is located between the first substrate 1 and the second substrate 2 .

[0038] The notches 4 on the electrode sheet A are arranged on the side surface of the first substrate 1, the number of the notches 4 is one or more, and the length, width and number of the notches 4 are not limited, wherein the notches 4 can be through-going long grooves, the electrode sheet is the electrode sheet A or the electrode sheet B, the notches 4 on the electrode sheet, wherein the notches 4 can be staggered or aligned, the electrode sheet can also have notches 4 on only two sides, wherein there are notches 4 on both sides, the first substrate 1 and the second substrate 2 need to be staggered to avoid sparking and creepage, the notches 4 in the electrode sheet A can be formed by printing composite, co-extrusion or injection molding.

[0039] In the instruction manual Figure 7 The middle dotted line indicates the notch 4 on the other side of the first substrate 1 .

[0040] Working principle: The accumulated charge on the filter screen in the air filter can be discharged smoothly through the notch 4 on the electrode sheet A or the extended membrane 5 on the electrode sheet B, so that the filter screen is not easily polarized, the formation of the reverse electric field is reduced, the filter screen maintains a high filtration efficiency for a long time, and the cleaning and maintenance cycle of the filter screen is extended.

[0041] Embodiment 2:

[0042] An air filter, the filter composition includes three states:

[0043] 1. The first type is a pole piece with single-sided notches 4, and then the pole pieces are arranged in a staggered manner to form an electric field. The notches 4 of electrode piece A\electrode piece B are single-sided, and then the notches 4 are arranged in one direction.

[0044] 2. The second type is to use double-sided notches 4 as the electrode pieces, and then form an electric field by staggered arrangement. The notches 4 of electrode piece A\electrode piece B are on both sides, and the notches 4 of electrode piece A\electrode piece B are staggered to avoid sparking and creepage.

[0045] 3. The third type is that the electrode is extended on the side of the electrode sheet B, and then the electrode sheets are arranged in a staggered manner to form an electric field, and the conductive or weakly conductive material extended on the side discharges the charge.

[0046] The specific experimental data are as follows. The CADR data of the optimized filter is very stable:

[0047]

[0048] In the above table, the CADR value of the electrode sheet in the ordinary filter is the CADR value exhibited by the electrode sheet without the notch 4 and the stretched membrane 5 , and the CADR value of the electrode sheet in the optimized filter is the CADR value exhibited by the electrode sheet with the notch 4 and the stretched membrane 5 .

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multilayer electrode film, comprising a first substrate (1), a second substrate (2), an electrode film (3), and a notch (4), characterized in that: The first substrate (1), the second substrate (2), the electrode film (3) and the notch (4) form an electrode sheet A; An extension film (5) is provided on the side end surface of the electrode film (3); the first substrate (1), the second substrate (2), the electrode film (3) and the extension film (5) form an electrode sheet B; The first substrate (1) and the second substrate (2) are combined to form an electrode sheet, and the electrode film (3) is located between the first substrate (1) and the second substrate (2); The notch (4) on the electrode sheet A is arranged on the side surface of the first substrate (1), and the number of the notch (4) is at least one.

2. A multilayer electrode membrane according to claim 1, characterized in that: The notch (4) in the electrode sheet A can be formed by printing composite, co-extrusion or injection molding.

3. The multilayer electrode membrane according to claim 1, characterized in that: The notch (4) may be provided on one side or both sides of the electrode sheet A.

4. The multilayer electrode membrane according to claim 1, characterized in that: There are three types of matching relationships between the electrode sheet A and the electrode sheet B, namely, electrode sheet A matches electrode sheet B, electrode sheet A matches electrode sheet A, and electrode sheet B matches electrode sheet B.

5. The multilayer electrode membrane according to claim 1, characterized in that: The first substrate (1) and the second substrate (2) are made of high-impedance materials, and the electrode sheet is made of metal or conductive plastic.

6. An air filter, characterized in that: It includes the electrode sheet A and the electrode sheet B as described in any one of claims 1 to 5.

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