A front discharge electrode group and a gas particle purification machine

Abstract

The application provides a front discharge electrode group and a gas particle purification machine, the front discharge electrode group comprising at least one discharge beam connected with a direct current power supply, the discharge beam comprising a plurality of metal wires and / or conductive non-metal wires. The discharge beam comprises more than 0.1 ten thousand metal wires and / or conductive non-metal wires; the metal wires comprise at least one of stainless steel fiber wires, titanium-chromium-aluminum alloy wires, titanium alloy wires and nickel alloy wires. The front discharge electrode group of the application is similar to a brush, adopts corona discharge, the tip of each fiber wire of the free end is a discharge point, the discharge effect is significantly improved, the charging efficiency of particles in the gas is improved, and the generation of ozone is effectively reduced to almost none.

Description

Technical Field

[0001] This invention belongs to the field of gas purification technology, and in particular relates to a pre-discharge electrode assembly and a gas particle purifier. Background Technology

[0002] As people's environmental awareness increases, their understanding of and demand for purification of gaseous pollutants (including but not limited to cooking fumes, dust, and VOCs) are also constantly rising. Therefore, more and better purification technologies are gradually being installed and used in restaurant kitchens, factories, and homes. Among these purification technologies, electrostatic precipitator adsorption technology has a very widespread application. The principle of electrostatic precipitator adsorption technology is that gas is ionized when it passes through an electrostatic field. After particulate matter in the gas combines with charged ions, it tends to move towards the electrode with the opposite polarity of the charged ions and is deposited. It is evident that the particulate matter removal rate is related to the charge efficiency of the particulate matter. However, existing technologies suffer from the technical problem of low particulate matter charge efficiency, leading to poor particulate matter removal rates and purification effects. Summary of the Invention

[0003] The purpose of this invention is to provide a pre-discharge electrode assembly and a gas particle purifier.

[0004] To achieve the above and other related objectives, the present invention provides the following technical solution:

[0005] In a first aspect, the present invention provides a pre-discharge electrode assembly, which is used for discharge after being subjected to voltage, the pre-discharge electrode assembly including at least one discharge beam connected to a DC power supply, the discharge beam including a plurality of metal wires and / or conductive non-metal wires.

[0006] Furthermore, the discharge beam comprises n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 0.1 million.

[0007] Furthermore, the diameter of the metal wire is in the range of 0.1-100 μm; or, the diameter of the conductive non-metal wire is in the range of 0.1-100 μm.

[0008] Furthermore, in the discharge electrode assembly provided by the present invention, the discharge beam comprises 10,000 to 200,000 metal wires and / or conductive non-metal wires; preferably, it comprises 10,000 to 80,000 metal wires and / or conductive non-metal wires.

[0009] Furthermore, in the discharge electrode assembly provided by the present invention, the metal wire includes at least one of stainless steel fiber wire, titanium-chromium-aluminum alloy wire, titanium alloy wire, and nickel alloy wire; preferably, the single fiber diameter of the stainless steel fiber wire is in the range of 5-100 μm.

[0010] Furthermore, in the discharge electrode assembly provided by the present invention, the conductive non-metallic wire is a carbon fiber wire, and the single fiber diameter of the carbon fiber wire ranges from 5 to 100 μm.

[0011] Furthermore, the discharge electrode assembly provided by the present invention includes at least one discharge electrode group, and the discharge cluster includes multiple circumferentially arranged discharge beams; preferably, the front discharge electrode assembly includes multiple discharge electrode groups with different radii and coaxially arranged.

[0012] Furthermore, the discharge electrode assembly provided by the present invention includes a discharge electrode group.

[0013] Furthermore, in the discharge electrode group provided by the present invention, the extension lines of the plurality of circumferentially arranged discharge beams in the discharge electrode group form an angle with the axis of the discharge electrode group, preferably, the angle is 10-85°.

[0014] Furthermore, in the discharge electrode group provided by the present invention, a plurality of circumferentially arranged discharge electrodes are arranged along the axial direction of the discharge electrode group.

[0015] Furthermore, in the discharge electrode assembly provided by the present invention, the voltage range of the pre-discharge electrode assembly is -3kV to -60kV.

[0016] Furthermore, in the discharge electrode assembly provided by the present invention, the discharge beam comprises a plurality of metal wires and / or non-metal wires, one end of the plurality of metal wires and / or non-metal wires being fixed together to form a fixed end, and the other end being a free end.

[0017] Furthermore, the discharge electrode assembly provided by the present invention further includes a support plate, wherein the fixed end of the discharge beam is fixed on the support plate.

[0018] In a second aspect, the present invention provides a gas particle purifier, the gas particle purifier comprising a pre-discharge electrode assembly and an adsorption unit, wherein the pre-discharge electrode assembly is as described above, wherein, along the gas flow direction, the pre-discharge electrode assembly is located in front of the adsorption unit, and there is a distance between the pre-discharge electrode assembly and the adsorption unit, wherein the discharge beam in the pre-discharge electrode assembly discharges and charges at least a portion of the particles in the flowing gas, and the gas with at least a portion of the charged particles enters the adsorption unit for electrostatic particle removal treatment.

[0019] In this invention, the gas includes one of the following: air, engine exhaust, cooking fumes, processing equipment exhaust, industrial exhaust, and boiler flue gas.

[0020] Beneficial effects of the present invention

[0021] 1: The discharge beam in the pre-discharge electrode assembly provided by the present invention includes thousands of metal wires and / or conductive non-metal wires. The discharge beam is fixed on the support plate and is similar to a brush. The discharge beam adopts corona discharge. The tip of each fiber at the free end is a discharge point, which significantly improves the discharge effect, increases the charging efficiency of particulate matter in the gas, and effectively reduces it to almost no ozone production.

[0022] 2: The present invention provides a combination of a pre-discharge electrode assembly and a rear-end adsorption unit, such as an electrostatic precipitator adsorption unit, to purify particulate matter in gas. The discharge beam of the pre-discharge electrode assembly is charged by applying voltage to discharge, at least some of the particulate matter in the flowing gas is charged, and the gas with at least some of the particulate matter is charged. The gas enters the adsorption unit for electrostatic particulate removal treatment, and the charged particulate matter enters the rear-end adsorption electric field for electric field treatment. The charged particulate matter in the adsorption gas is on the adsorption electrode. The particulate matter includes, but is not limited to, contaminants such as viruses, bacteria, and radiation-containing aerosols. After electric field treatment, particulate matter and aerosols containing viruses, bacteria, and radiation are removed from the gas, resulting in sterile, radiation-free, and virus-free clean gas, thus achieving the effect of gas purification.

[0023] 3. The front discharge electrode assembly provided by this invention also has the following advantages:

[0024] Under the same purification efficiency requirements, compared to purifying particulate matter in a gas using a single electrode rod or electrode wire and an adsorption unit, the voltage required to be applied by the pre-discharge electrode assembly of the present invention when combined with the same adsorption unit is much smaller than that required by a single electrode rod or electrode wire. This has the advantages of low energy consumption and low cost, thus effectively reducing ozone production to almost zero.

[0025] 4. The gas particle purifier provided by this invention can adsorb particles larger than 30nm, and the removal effect of particles larger than 100nm can reach more than 99.99%. Therefore, it can kill bacteria and virus particles in the gas. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the gas particle purifier involved in Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of an adsorption electric field group involved in Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of another adsorption electric field group involved in Embodiment 1 of the present invention;

[0029] Figure 4 This is a three-dimensional schematic diagram of the adsorption electrode assembly in Embodiment 1 of the present invention;

[0030] Figure 5This is a three-dimensional schematic diagram of the discharge electrode assembly in Embodiment 1 of the present invention;

[0031] Figure 6 This is a schematic diagram of the front discharge electrode assembly in Embodiment 2 of the present invention;

[0032] Figure 7 This is a schematic diagram of the discharge beam in Embodiment 2 of the present invention;

[0033] Figure 8 This is a schematic diagram of the discharge beam in Embodiment 3 of the present invention. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0035] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that the present invention can achieve, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., used in this specification to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0037] Example 1

[0038] like Figure 1As shown, the pre-discharge electrode assembly 200 includes at least one discharge beam 201. The discharge beam 201 includes multiple metal wires and / or conductive non-metal wires (discharge materials). One end of each metal wire and / or non-metal wire is fixed together to form a fixed end, and the other end is a free end. The multiple metal wires and / or non-metal wires at the free end are dispersed. The pre-discharge electrode assembly 200 also includes a support plate 202. The fixed end of the discharge beam 201 is fixed on the support plate 202, which is made of a conductive material. The discharge beam of the pre-discharge electrode assembly is used for discharge after a voltage is applied. The discharge beam 201 is fixed on the conductive support plate 202. With this design, one or more discharge beams are fixed, and when the support plate is electrically connected to one pole of a DC power supply, the discharge beam 201 is also connected to the DC power supply. In the case of multiple discharge beams, multiple discharge beams can be connected to one power supply simultaneously. The structure is simple and convenient.

[0039] The discharge beam 201 comprises n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 1,000; preferably, it comprises more than 5,000 metal wires and / or conductive non-metal wires; preferably, it comprises more than 10,000 metal wires and / or conductive non-metal wires; preferably, it comprises 10,000 to 200,000 metal wires and / or conductive non-metal wires; preferably, it comprises 10,000 to 80,000 metal wires and / or conductive non-metal wires. Typical, but not limiting, quantities of metal wires and / or conductive non-metal wires are 1,000, 2,000, 3,000, 4,000, 5,000, 6,000, 8,000, 10,000, 20,000, 50,000, 150,000, 200,000, 250,000, 300,000, 400,000, or 500,000. The discharge beam, composed of thousands of metal wires and / or conductive non-metal wires, is fixed to a support plate in a brush-like shape. The discharge beam employs corona discharge, with the tip of each free end of the wire serving as a discharge point, significantly improving the discharge effect and effectively reducing ozone production to almost zero.

[0040] In this invention, the diameter of the metal wire ranges from 0.1 to 100 μm; preferably, the diameter ranges from 5 to 100 μm; typical but non-limiting diameters of the metal wire are: 0.1 μm, 0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 10 μm, 12 μm, 15 μm, 20 μm, 3 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm. For example, the metal wire includes, but is not limited to, at least one of stainless steel fiber wire, titanium-chromium-aluminum alloy wire, titanium alloy wire, and nickel alloy wire; the metal wire includes stainless steel fiber wire, the single fiber diameter of which can range from 0.1 to 100 μm, or the single fiber diameter of which can range from 5 to 100 μm, and the carbon content in the discharge material is 90-99.9%, typically but non-limiting carbon content is 90%, 93%, 96%, or 99%.

[0041] In this invention, the diameter of the conductive non-metallic wire ranges from 0.1 to 100 μm; preferably, the diameter of the conductive non-metallic wire ranges from 5 to 100 μm; typical but non-limiting conductive non-metallic wire diameters are: 0.1 μm, 0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 10 μm, 12 μm, 15 μm, 20 μm, 3 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm. For example, conductive non-metallic wires include, but are not limited to, carbon fiber wires. The single fiber diameter of carbon fiber wires can range from 0.1 to 100 μm; the single fiber diameter of carbon fiber wires can range from 5 to 100 μm. Typical but non-limiting single fiber diameters of carbon fiber wires are: 0.1 μm, 0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 10 μm, 12 μm, 15 μm, 20 μm, 3 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm.

[0042] In this invention, the discharge beam of the pre-discharge electrode assembly is subjected to voltage for discharge, ionizing the gas and charging the particulate matter in the gas. If an electrostatic precipitator is subsequently installed, the charged particles enter the adsorption electric field of the electrostatic precipitator and are adsorbed, thereby purifying the particulate matter. When the area of ​​the adsorption electric field is small, the pre-discharge electrode assembly can include a single discharge beam positioned at the center of the adsorption electric field. The area covered by the discharge of one beam is sufficient to radiate across the entire adsorption electric field, ensuring the required adsorption and purification efficiency. When the area of ​​the adsorption electric field is large, the pre-discharge electrode assembly can include multiple discharge beams, which simultaneously perform corona discharge to enhance the particle charging efficiency and improve the adsorption effect of the subsequent adsorption electric field.

[0043] In this invention, the corona discharge on the front discharge electrode group adopts a DC negative high voltage with a voltage range of -3kV to -60kV. Further, the voltage range is -3kV to -25kV, -4kV to -15kV, -8kV to -20kV, -10kV to -20kV, -15kV to -18kV, or -10kV to -23kV. Typical but non-limiting voltages are: -3kV, -3.5kV, -4kV, -5kV, -6kV, and -7kV. -8kV, -9kV, -10kV, -12kV, -13kV, -14kV, -15kV, -16kV, -17kV, -18kV, -19kV, -20kV, -21kV, 22kV, -23kV, -24kV, -25kV, -26kV, 27kV, -28kV, -29kV, 30kV, -35kV, -40kV, -45kV, -50kV, -55kV, or -60kV.

[0044] In this invention, a pre-discharge electrode assembly and an adsorption unit constitute a gas particle purifier, used to adsorb particulate matter in gas to obtain sterile, radiation-free, and virus-free clean gas. The pre-discharge electrode assembly is located in front of the adsorption unit along the gas flow direction, with a distance between them. The discharge beam in the pre-discharge electrode assembly charges at least a portion of the particulate matter in the flowing gas, and the gas with at least a portion of the charged particulate matter enters the adsorption unit for electrostatic particulate removal.

[0045] In this invention, the adsorption unit can be an existing electrostatic dust removal device or the electrostatic dust removal device provided by this invention. The electrostatic dust removal device provided by this invention includes an adsorption electric field group.

[0046] like Figure 1 As shown, along the gas flow direction, the gas particle purifier includes a pre-discharge electrode group 200 and an adsorption electric field group 100. Along the airflow direction A, the pre-discharge electrode group 200 is positioned in front of the adsorption electric field group 100, with the free end of the discharge beam 201 facing the adsorption electric field group 100. A gap exists between the end of the discharge beam 201 and the adsorption electric field group 100. The discharge beam 201 in the pre-discharge electrode group 200 discharges, charging the gas particles and improving their charging efficiency. The charged particles enter the adsorption electric field group 100 at the rear for electric field treatment. The adsorption of charged particles in the gas occurs on the adsorption electrodes. These particles include, but are not limited to, contaminants such as viruses, bacteria, and radioactive aerosols. The electric field treatment removes virus-, bacteria-, and radioactive particles and aerosols from the gas, resulting in sterile, radiation-free, and virus-free clean gas, thus achieving gas purification.

[0047] In this invention, the adsorption electric field assembly 100 includes at least one discharge electrode and at least one adsorption electrode, which are coaxially mounted and staggered internally and externally. For example... Figure 2 As shown, the adsorption electric field assembly 100 includes a discharge electrode assembly and an adsorption electrode assembly for forming an electric field. In this embodiment, the discharge electrode assembly includes discharge electrodes 11 and 12, and the adsorption electrode assembly includes adsorption electrodes 21, 22, and 23. Both the discharge electrode assembly and the adsorption electrode assembly include cylinders of different diameters, and multiple cylinders are coaxially fitted and staggered. Figure 2 From the inside out, the electrodes are arranged as follows: adsorption electrode 21, discharge electrode 11, adsorption electrode 22, discharge electrode 12, and adsorption electrode 23. The distances between adsorption electrodes 21, 11, 22, 12, and 23 are the same. That is, adjacent cylindrical walls have different electrodes, ensuring consistent distances between each cylindrical electrode. In this embodiment, the distance between the cylindrical electrodes ranges from 4 to 30 millimeters, and the voltage range between the discharge electrode and the adsorption electrode is 3 kV to 8 kV.

[0048] In one example, the electric field is a DC electric field, the discharge electrode is connected to the negative or positive terminal of the power supply, the adsorption electrode is connected to the other terminal of the power supply, and the adsorption electrode is grounded. The discharge beam of the pre-discharge electrode group can be connected to the negative terminal of the power supply.

[0049] A gas flow channel is formed between the adsorption electrode and the discharge electrode to allow gas to pass through for electric field treatment. A gas flow channel 31 is formed between the adsorption electrode 21 and the discharge electrode 11. A gas flow channel 32 is formed between the discharge electrode 11 and the adsorption electrode 22. A gas flow channel 33 is formed between the adsorption electrode 22 and the discharge electrode 12. A gas flow channel 34 is formed between the discharge electrode 12 and the adsorption electrode 23.

[0050] In one example, both the discharge electrode and the adsorption electrode are made of metal.

[0051] In one example, both the discharge electrode and the adsorption electrode are made of non-metallic conductive materials.

[0052] Preferably, the non-metallic conductive material is graphite or a synthetic material containing graphite.

[0053] In this embodiment, the coaxial and spaced cylindrical electrodes are made of graphite, with the discharge electrode and adsorption electrode spaced at equal intervals.

[0054] like Figure 3 As shown, this embodiment provides another adsorption electric field assembly, including a first electrode 10 and a second electrode 20. In this embodiment, the first electrode 10 is an adsorption electrode, and the second electrode 20 is a discharge electrode.

[0055] like Figure 4 As shown, the first pole portion 10 has a first frame 14 and a plurality of parallel first poles 15 connected to the first frame 14. The first frame 14 is a rectangular box, including a first upper cover plate, a first lower cover plate, a first left side plate and a first right side plate. The two ends of the first pole 15 are respectively connected to the first upper cover plate and the first lower cover plate. The first pole 15 includes an upper end portion 151, a middle portion 152 and a lower end portion 153 connected in sequence. The width of the upper end portion 15 and the lower end portion 153 is smaller than the width of the middle portion 152 of the first pole. In the embodiment, the width of the first upper cover plate and the first lower cover plate is the same as the width of the middle portion 152.

[0056] like Figure 5 As shown, the second pole portion 20 has a second frame 24 and a plurality of parallel second poles 25 connected to the second frame 24. The second frame is a rectangular box, including a second upper cover plate, a second lower cover plate, a second left side plate, and a second right side plate. The two ends of the second poles 25 are respectively connected to the second upper cover plate and the second lower cover plate. In the embodiment, the width of the second upper cover plate and the second lower cover plate is smaller than the width of the second poles 25.

[0057] At least a portion of the second pole portion 20 is disposed within the first pole portion 10. Both the first pole 15 and the second pole 25 are flat plates. A plurality of first poles 15 and a plurality of second poles 25 are arranged in parallel and staggered. The distance between the first pole 15 and the second pole 25 is the same. In the embodiment, the distance between the first pole 15 and the second pole 25 ranges from 4 to 30 millimeters.

[0058] A gap exists between the first frame and the second frame, and this gap is the same as the distance between the first electrode 15 and the second electrode 25. A gas flow channel is formed between the first electrode and the second electrode, and between the first frame and the second frame, to subject the flowing gas to an electric field treatment.

[0059] The front discharge electrode assembly and the rear discharge electrode assembly provided by this invention are as follows: Figure 2 Provide adsorption electric field group 100 or as Figures 3-5 The provided adsorption electric field assembly is used to purify particulate matter in the gas. The discharge beam of the pre-positioned discharge electrode assembly is charged by applying voltage, which charges at least some of the particulate matter in the flowing gas. The gas with at least some of the particulate matter charged enters the adsorption unit for electrostatic particulate removal. The charged particulate matter enters the adsorption electric field at the rear end for electric field treatment. The charged particulate matter in the adsorption gas is on the adsorption electrode. The particulate matter includes, but is not limited to, contaminants such as viruses, bacteria, and radiation-containing aerosols. After electric field treatment, particulate matter and aerosols containing viruses, bacteria, and radiation are removed from the gas, resulting in sterile, radiation-free, and virus-free clean gas, thus achieving the effect of gas purification.

[0060] In this invention, tests have shown that, under the same purification efficiency requirements, compared to purifying particulate matter in a gas using a single electrode rod or electrode wire and an adsorption unit, the voltage required to be applied by the pre-discharge electrode assembly of this invention when combined with the same adsorption unit is much lower than that required by a single electrode rod or electrode wire. This results in advantages of low energy consumption and low cost.

[0061] Example 2

[0062] like Figure 6 As shown, this embodiment provides another pre-discharge electrode group 20, which includes at least one discharge electrode group 22. The discharge electrode group 22 includes multiple circumferentially arranged discharge beams 21. It can be understood that the discharge beams 41 in the discharge electrode group 22 are circularly distributed. The pre-discharge electrode group 20 also includes a support plate 23, which is circular, and the fixed ends of the discharge beams 21 are disposed on the support plate 23. The multiple discharge electrodes 22 are electrically connected to a DC high-voltage power supply to realize the pre-discharge electrode group 20 being electrically connected to a DC high-voltage power supply.

[0063] Continue to refer to Figure 6The pre-discharge electrode group 20 includes multiple discharge electrode groups 22 with different radii and coaxial arrangement. For example, in this embodiment, the pre-discharge electrode group 20 includes two discharge electrode groups 22. The discharge beams 41 in each discharge electrode group 22 are distributed in a circle. The radii of the circles in the two discharge electrode groups 22 are different, but the center positions are the same.

[0064] In this embodiment, as Figure 7 As shown, the discharge beam 21 is arranged along the axial direction BB' of the discharge electrode group 22, that is, the extension line of the discharge beam is parallel to the axis. In other words, in this embodiment, the discharge beam 21 is arranged along the airflow direction.

[0065] In this invention, the discharge electrode group includes multiple discharge beams, which improves the corona discharge efficiency compared to a single discharge beam. At the same time, the multiple discharge beams are arranged circumferentially, resulting in more uniform discharge and improving the efficiency of particulate matter removal at the downstream end.

[0066] In this embodiment, the other features of the pre-discharge electrode group 20 are the same as those of the pre-discharge electrode group 200 in Embodiment 1, and can be referred to Embodiment 1.

[0067] Example 3

[0068] This embodiment provides another front discharge electrode assembly, which differs from Embodiment 2 in that the discharge beam setting direction in the front discharge electrode assembly is as follows: otherwise, refer to Embodiment 2.

[0069] In this embodiment, the front discharge electrode group 20' includes a discharge electrode group 22', and the discharge group 22' includes multiple circumferentially arranged discharge beams 21', with the discharge beams 21' in the discharge electrode group 22' being circularly distributed.

[0070] Reference Figure 8 In this embodiment, the extension line of the discharge beam 21 forms an angle α with the axis BB' of the discharge electrode group. Preferably, the angle α is 10-85°.

[0071] In this invention, the discharge beam in the circumferentially arranged discharge electrode group is inclined to the axial discharge, which can further improve the discharge efficiency, thereby improving the efficiency of particle removal at the downstream end.

[0072] Throughout this specification, references to "an example," "an embodiment," or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment. Therefore, the appearance of "an example," "an embodiment," or "an embodiment" in various places throughout this specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0073] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A pre-discharge electrode assembly, wherein the pre-discharge electrode assembly is used for discharge after a voltage is applied, characterized in that, The pre-discharge electrode assembly includes at least one discharge beam connected to a DC power supply, the discharge beam comprising multiple metal wires and / or conductive non-metal wires.

2. The discharge electrode assembly according to claim 1, characterized in that, The discharge beam satisfies one or more of the following conditions: (1) The discharge beam comprises n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 0.1 million; (2) The diameter of the metal wire is in the range of 0.1-100 μm; (3) The diameter range of the conductive non-metallic wire is 0.1-100um.

3. The discharge electrode assembly according to claim 2, characterized in that, The discharge beam comprises 5,000 to 200,000 metal wires and / or conductive non-metal wires; preferably, it comprises 5,000 to 80,000 metal wires and / or conductive non-metal wires.

4. The discharge electrode assembly according to claim 1, characterized in that, The diameter of the metal wire is in the range of 5-100 μm, or the diameter of the conductive non-metal wire is in the range of 5-100 μm.

5. The discharge electrode assembly according to claim 1, characterized in that, The metal wire includes at least one of stainless steel fiber wire, titanium-chromium-aluminum alloy wire, titanium alloy wire, and nickel alloy wire, or the conductive non-metallic wire is carbon fiber wire. Preferably, the single fiber diameter of the stainless steel fiber is in the range of 5-100 μm, or the single fiber diameter of the carbon fiber is in the range of 5-100 μm.

6. The discharge electrode assembly according to any one of claims 1-5, characterized in that, The pre-discharge electrode group includes at least one discharge electrode group, and the discharge cluster includes multiple discharge beams arranged circumferentially; preferably, the pre-discharge electrode group includes multiple discharge electrode groups with different radii and arranged coaxially.

7. The discharge electrode assembly according to claim 6, characterized in that, The extension lines of the multiple circumferentially arranged discharge beams in the discharge electrode group form an angle with the axis of the discharge electrode group, preferably 10-85°.

8. The discharge electrode assembly according to claim 6, characterized in that, The multiple circumferentially arranged discharge electrodes in the discharge electrode group are arranged along the axial direction of the discharge electrode group.

9. The discharge electrode assembly according to any one of claims 1, characterized in that, The voltage range of the pre-discharge electrode group is -3kV to -60kV.

10. The discharge electrode assembly according to claim 1, characterized in that, One end of the plurality of metal wires and / or non-metal wires of the discharge beam is fixed together to form a fixed end, and the other end is a free end.

11. The discharge electrode assembly according to claim 10, characterized in that, The pre-discharge electrode assembly also includes a support plate, and the fixed end of the discharge beam is fixed on the support plate.

12. A gas particle purifier, characterized in that, The gas particle purifier includes a pre-discharge electrode assembly and an adsorption unit. The pre-discharge electrode assembly is as described in any one of claims 1 to 11. Along the gas flow direction, the pre-discharge electrode assembly is located in front of the adsorption unit, and there is a distance between the pre-discharge electrode assembly and the adsorption unit. The discharge beam in the pre-discharge electrode assembly charges at least some of the particles in the flowing gas, and the gas with at least some charged particles enters the adsorption unit for electrostatic particle removal treatment.

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