Electrostatic filtering device

Abstract

The utility model relates to an electrostatic filtering device. And the electrostatic filtering device comprises a positive electrode plate group and a negative electrode plate group. The positive electrode plate group comprises a plurality of positive electrode plates. The negative electrode plate group includes a plurality of negative electrode plates. The positive electrode plates are communicated with the positive electrode of the high-voltage power supply, and the negative electrode plates are communicated with the negative electrode of the high-voltage power supply. The positive electrode plate group and the negative electrode plate group are arranged on the leeward side, and the electrode plates in different groups are connected together by using a plurality of first supporting parts. And the positive electrode plate group and the negative electrode plate group are arranged on the windward side, and at least part of the electrode plates in the same group are connected together by using a plurality of second supporting components. Therefore, the complexity and the cost of the product can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic dust removal technology, and in particular to an electrostatic filtration device. Background Technology

[0002] Electrostatic filters have been widely used and developed due to their advantages such as low air resistance and the ability to be repeatedly cleaned and reused.

[0003] An electrostatic filter is a filter that uses alternating positive and negative electrode components to create an electrostatic field, thereby achieving a purification function.

[0004] Flat-plate electrostatic filters are a common type of filter. They are characterized by alternating positive and negative electrodes arranged in a flat plate shape to apply an electric field to the ventilated area, thereby adsorbing dust.

[0005] Because of the high voltage applied to the positive and negative electrodes respectively, they cannot be directly assembled together. An insulating support is required to form a complete electrostatic filter. Since this support can become contaminated by airborne particles during filter use, and these contaminants are often conductive, protecting the support is crucial. If the support becomes conductive due to the adsorption of airborne contaminants, the leakage current between the positive and negative electrodes will increase. This leakage current first impacts the power supply, significantly increasing power consumption. When the leakage current exceeds the power supply's load capacity, it will cause a voltage drop, leading to filter failure. For high-resistivity plate electrostatic filters, this conduction between the positive and negative electrodes will directly result in performance degradation or even failure.

[0006] Therefore, a more practical insulation support structure needs to be designed. Summary of the Invention

[0007] One of the technical problems that this invention aims to solve is how to design a more practical insulation support structure.

[0008] This utility model provides an electrostatic filtration device, comprising: a positive electrode plate group and a negative electrode plate group. The positive electrode plate group includes multiple positive electrode plates, and the negative electrode plate group includes multiple negative electrode plates. The multiple positive electrode plates and the multiple negative electrode plates are arranged alternately and at intervals. The positive electrode plates are connected to the positive terminal of a high-voltage power supply, and the negative electrode plates are connected to the negative terminal of a high-voltage power supply. The positive electrode plate group and the negative electrode plate group are on the leeward side, and the electrode plates in different groups are connected together using several first support components. The positive electrode plate group and the negative electrode plate group are on the windward side, and at least some of the electrode plates in the same group are connected together using several second support components.

[0009] Optionally, on the windward side, the positive electrode plate group and the negative electrode plate group also use at least one of the first support members to connect the electrode plates in different groups together.

[0010] Optionally, the electrostatic filtration device further includes a shielding device for shielding the first support member disposed on the windward side, so that the first support member does not directly face the unpurified gas.

[0011] Optionally, the positive electrode plate group and the negative electrode plate group are connected together by a first support member at the upper and lower edges of the windward side.

[0012] Optionally, the electrostatic filtration device further includes: insulating support plates located on both sides of the positive electrode plate group and the negative electrode plate group, wherein the first support component and the second support component are respectively connected to the insulating support plate.

[0013] Optionally, at least one group of adjacent positive and negative electrode plates located at both edges are connected together on the windward side using a plurality of third support members, wherein the second support member is configured to connect other electrode plates in the same group other than the electrode plates connected to the third support member; or the second support member is configured to connect at least one group of adjacent positive and negative electrode plates located at both edges on the windward side and to connect other electrode plates in the same group.

[0014] Optionally, at least one group of adjacent positive and negative electrode plates located at the two side edges are connected together on the windward side using a number of third support members, wherein the second support member is configured to connect other electrode plates in the same group, other than the electrode plates connected to the third support member.

[0015] Optionally, the electrostatic filtration device further includes an outer frame that shields the third support member so that the third support member does not directly face the unpurified gas.

[0016] Optionally, the second support member is configured to connect at least one set of adjacent positive and negative electrode plates located at both sides of the edge together on the windward side, and to connect other electrode plates in the same set together.

[0017] Optionally, the electrostatic filtration device further includes an outer frame that shields the support portion of the second support member used to connect the at least one set of adjacent positive and negative electrode plates, so that the support portion does not directly face the unpurified gas.

[0018] This invention employs an integrated support on the leeward side to fix all electrodes together, while the windward side uses a separate support, with each electrode group using an independent support. By using different support methods on the windward and leeward sides, the complexity and cost of the product can be reduced. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0020] Figure 1 A schematic diagram of an electrostatic filtration device is shown.

[0021] Figure 2 A schematic diagram of the electrostatic filtration device with positive and negative electrodes for separate support is shown.

[0022] Figure 3 A schematic diagram of an electrostatic filtration device according to an embodiment of the present invention is shown.

[0023] Figure 4 A schematic diagram of an electrostatic filtration device according to another embodiment of the present invention is shown.

[0024] Figure 5 A schematic diagram of an electrostatic filtration device according to another embodiment of the present invention is shown.

[0025] Figure 6 A schematic diagram of an electrostatic filtration device according to another embodiment of the present invention is shown.

[0026] Figure 7 A schematic diagram of an electrostatic filtration device according to another embodiment of the present invention is shown.

[0027] The meanings of the reference numerals in the attached drawings are as follows: 11. Positive electrode plate; 12. Negative electrode plate; 13. First support component; 14. Second support component; 15. Shielding device; 16. Insulating support plate; 17. Third support component; 18. Outer frame. Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0029] A complete electrostatic filter includes a charging device and a filtration device.

[0030] The function of a charging device is to charge fine particulate matter in the air, making it electrically charged.

[0031] The filter device uses an electrostatic field to adsorb charged particles, thus achieving the effect of air purification.

[0032] This utility model relates only to improvements on the filtration device, and not to improvements on the charging device. Therefore, this utility model does not describe the charging device, but focuses on describing the filtration device. It should be understood that the filtration device (i.e., electrostatic filtration device) described in this utility model can be used in conjunction with the charging device to form a complete electrostatic filter. Alternatively, the electrostatic filtration device described in this utility model may also include the charging device to form a complete electrostatic filter.

[0033] Common electrostatic filters include plate type and honeycomb type. The electrostatic filtration device in this invention refers to a plate type electrostatic filtration device. In this invention, the terms "electrode" and "electrode plate" are used interchangeably.

[0034] Figure 1 A schematic diagram of an electrostatic filtration device is shown.

[0035] Figure 1 In the diagram, red represents the positive electrode, blue represents the negative electrode, and pink represents the supporting structure.

[0036] like Figure 1 As shown, directly fixing the positive and negative electrode groups together using an integrated support structure is the simplest method. However, contaminants can quickly contaminate the support structure between the positive and negative electrodes. Since contaminants typically have some conductivity, this leads to a significant increase in leakage current between the positive and negative electrodes. This can significantly increase device power consumption, and in severe cases, reduce filter efficiency or cause filter failure.

[0037] To improve this situation, a polarity-separated support method can be used to prevent the positive and negative electrodes from conducting.

[0038] Figure 2 A schematic diagram of the electrostatic filtration device with positive and negative electrodes for separate support is shown.

[0039] Figure 2 In the diagram, red represents the positive electrode, blue the negative electrode, pink and light blue the supporting structure, and purple the insulating support plate. For example... Figure 2 As shown, the positive and negative electrode separate support means that all positive electrodes use one set of support structure (such as the pink support structure), and all negative electrodes use another set of support structure (such as the light blue support structure).

[0040] This support method can effectively prevent direct conduction between the positive and negative electrodes in ventilated areas. However, this support method requires two complete support structures, and after the positive and negative electrodes are supported separately, another structure (i.e., the purple insulating support plate) is needed to fix the two support structures together.

[0041] from Figure 2 As can be seen, not only do the positive and negative electrode groups require independent support structures, but the filter also needs a separate support plate to fix the positive and negative electrode groups together. At the same time, each electrode plate must avoid areas that are not part of its support structure (this detail is not shown in the figure).

[0042] In summary, the separate positive and negative electrode support greatly increases the complexity of the product and also increases the product cost.

[0043] The design concept of the electrode support structure of this utility model is described below.

[0044] This utility model relates to a flat-plate type electrostatic air filter.

[0045] In a flat-plate electrostatic air filter, the support position between the positive and negative electrodes can be located on the windward side, the leeward side, or in the middle, from an airflow perspective. From the perspective of the frame, it can be located in a position obstructed by the frame or in a ventilated area. The windward side is the first surface that unpurified gas (air) contacts when entering the purification area. The leeward side is the first surface that purified gas contacts when leaving the purification area.

[0046] For cost reasons, installing the support structure at the edge of the electrode plate is less expensive. Therefore, in this invention, the support structure is not installed in the middle; all support structures are located at the edge of the electrode plate.

[0047] Furthermore, the windward side is in direct contact with unpurified air and is very easily contaminated. Therefore, improving the support method of the windward side, such as using a positive and negative electrode separate support method, can directly improve the performance of the electrostatic filter.

[0048] The air on the leeward side is filtered and purified, making it relatively clean. Therefore, even without improving the support method on the leeward side, if the positive and negative electrode groups are still directly fixed together, the pollution rate on the leeward side will be much lower than that on the windward side.

[0049] In view of this, this utility model proposes to use different support methods on the windward and leeward sides of the filter electrodes. Specifically, the leeward side uses an integrated support to fix all electrodes together, while the windward side uses a separate support, with each electrode group using an independent support. This differs from using a single support method (e.g., Figure 1 The integrated support shown, or Figure 2 Compared to the graded support shown, this utility model, by using different support methods on the windward and leeward sides, can effectively support the positive and negative electrode plates while reducing product complexity and cost.

[0050] Figure 3 A schematic diagram of an electrostatic filtration device according to an embodiment of the present invention is shown.

[0051] See Figure 3 The electrostatic filtration device includes a positive electrode plate group and a negative electrode plate group. The positive electrode plate group includes multiple positive electrode plates 11. The negative electrode plate group includes multiple negative electrode plates 12. The multiple positive electrode plates 11 and multiple negative electrode plates 12 are arranged alternately. The positive electrode plates 11 are connected to the positive terminal of the high-voltage power supply, and the negative electrode plates 12 are connected to the negative terminal of the high-voltage power supply.

[0052] It should be understood that the focus of this invention is on improving the support structure of the electrode plate. Therefore, this invention does not limit the electrical characteristics of the electrode plate itself. In some exemplary embodiments, at least one electrode plate (e.g., some or all of the electrode plates) among the plurality of positive electrode plates and the plurality of negative electrode plates is an electrode plate in which an insulating material is wrapped around a conductive material.

[0053] On the leeward side, the positive and negative electrode plate groups are connected together using several first support members 13. That is, the first support members 13 connect all the electrode plates regardless of polarity.

[0054] On the windward side, the positive and negative electrode plate groups are connected together by several second support members 14, connecting at least some (e.g., all) of the electrode plates within the same group. That is, the same second support member 14 is only used to connect electrode plates with the same polarity. Figure 3 As shown, the second support member 14, indicated in light blue and pink, is used to connect electrode plates of different polarities together. For example, the second support member 14, indicated in light blue, can connect some or all of the positive electrode plates 11 in the positive electrode plate group, and the second support member 14, indicated in pink, can connect some or all of the negative electrode plates 12 in the negative electrode plate group. In this invention, the first support member 13, the second support member 14, and the third support member 17, described below, can all be insulating support members.

[0055] Figure 3 The support method shown already fixes the positive and negative electrode groups together on the leeward side, so theoretically it is no longer necessary to fix the positive and negative electrode groups together on the windward side. That is, theoretically, it is no longer necessary to configure separate support plates on both sides.

[0056] However, when the supporting structure or electrode plate is not strong enough, there will still be some stability issues, such as displacement of the relative position on the windward side.

[0057] In response to this, the present invention further proposes that some improvement measures can be taken to strengthen the support structure.

[0058] The following description, in conjunction with the accompanying drawings, provides an exemplary illustration of these improvements.

[0059] Figure 4 A schematic diagram of an electrostatic filtration device according to another embodiment of the present invention is shown.

[0060] and Figure 3 The difference in the illustrated embodiment is that, in this embodiment, the positive electrode plate group and the negative electrode plate group are connected together on the windward side using at least one first support member 13.

[0061] The first support component 13, which is installed on the windward side, can serve as an integrated support to strengthen the structure and make it less likely for relative displacement to occur on the windward side.

[0062] For example, the positive electrode plate group and the negative electrode plate group are connected together by a first support member 13 at the upper and lower edges of the windward side. That is, a first support member 13 can be set at the upper and lower edges of the windward side. By setting the first support member 13 at the edge of the windward side, it is convenient to shield the electrostatic filtration device, so that the first support member 13 on the windward side is not directly exposed to the purification ventilation area at the shielded position of the structural edge. This can greatly slow down the contamination rate of the first support member 13 on the windward side.

[0063] Figure 5 A schematic diagram of an electrostatic filtration device according to another embodiment of the present invention is shown.

[0064] and Figure 4 The difference in the illustrated embodiment is that, in this embodiment, the electrostatic filtration device may further include a shielding device 15 for shielding the first support member disposed on the windward side, so that the first support member disposed on the windward side does not directly face the unpurified gas, thereby slowing down the contamination rate of the first support member disposed on the windward side.

[0065] Figure 6A schematic diagram of an electrostatic filtration device according to another embodiment of the present invention is shown.

[0066] and Figure 3 The difference in the illustrated embodiment is that, in this embodiment, the electrostatic filtration device further includes insulating support plates 16 located on both sides of the positive electrode plate group and the negative electrode plate group. The first support member 13 and the second support member 14 are also connected to the insulating support plates, respectively. This increases the strength of the support structure.

[0067] In some embodiments, considering that the outermost electrodes can be shielded by the outer frame, an integrated support can be used on the windward side of at least one set of positive and negative electrodes on both sides of the outermost edge to directly fix the positive and negative electrodes together. Since this integrated support can be shielded by the outer frame, fixing at least one set of positive and negative electrodes at the outermost edge directly together on the windward side increases the strength of the support structure while still extending the dust holding capacity.

[0068] Figure 7 A schematic diagram of an electrostatic filtration device according to another embodiment of the present invention is shown.

[0069] and Figure 3 The difference in the illustrated embodiment is that, in this embodiment, at least one group of adjacent positive and negative electrode plates located at both edges are connected together on the windward side using several third support members 17. Other positive and negative electrode plates can still be connected using a tiered support method on the windward side. That is, the second support member 14 can be configured to connect other electrode plates besides those connected to the third support member 17 within the same group.

[0070] The electrostatic filtration device also includes an outer frame 18. The outer frame 18 can shield the third support member 17, preventing the third support member 17 from directly facing the unpurified gas. By using the third support member 17 to directly fix at least one set of positive and negative electrodes together at the edge on the windward side, the strength of the support structure can be increased. Furthermore, the shielding effect of the outer frame 18 can slow down the contamination rate of the third support member 17.

[0071] In some embodiments, the third support member 17 may be omitted, and the second support member 14 may perform the function of the third support member 17. That is, in addition to connecting the electrode plates within the same group, the second support member 14 can also perform the function of the third support member 17. In other words, the second support member 14 can connect at least one group of adjacent positive and negative electrode plates located at both edges on the windward side, and connect other electrode plates within the same group. For example... Figure 3The third support member 17 shown can be considered as a component of the second support member 14. In these embodiments, the outer frame 18 can be used to shield the support portion of the second support member 14 used to connect the at least one set of adjacent positive and negative electrode plates, so that the support portion does not directly face the unpurified gas.

[0072] In summary, this utility model, by using tiered support on the windward side and integrated support on the leeward side, while appropriately increasing the support strength in the areas obscured by the outer frame, takes into account the product's dust-binding characteristics, significantly reduces the complexity of the support components, and lowers product costs. It possesses strong practicality.

[0073] The electrostatic filtration device according to the present invention has been described in detail above with reference to the accompanying drawings.

[0074] It should be understood that, without conflict, the different embodiments described above can be combined with each other to form new embodiments.

[0075] For example, in some embodiments, the above is combined with Figure 6 The described electrostatic filtration device can be combined with the above text. Figure 4 or Figure 5 The described electrostatic filtration devices are combined into a new type of electrostatic filtration device. That is, in Figure 1 Based on the electrostatic filtration device shown, the positive electrode plate group and the negative electrode plate group are connected together on the windward side using at least one first support component. Furthermore, an insulating support plate is provided on each side of the positive electrode plate group and the negative electrode plate group. The first support component and the second support component are also connected to the insulating support plate, respectively.

[0076] For example, in some embodiments, the above is combined with Figure 7 The described electrostatic filtration device can also be combined with the above text. Figure 4 to Figure 6 Any of the described electrostatic filtration devices can be combined to form a new electrostatic filtration device.

[0077] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An electrostatic filtration device, characterized in that, include: Positive electrode plate group and negative electrode plate group, The positive electrode plate assembly includes multiple positive electrode plates. The negative electrode plate assembly includes multiple negative electrode plates. The plurality of positive electrode plates and the plurality of negative electrode plates are arranged alternately at intervals. The positive electrode plate is connected to the positive terminal of the high-voltage power supply, and the negative electrode plate is connected to the negative terminal of the high-voltage power supply. On the leeward side, the positive electrode plate group and the negative electrode plate group are connected together by several first support components. On the windward side, the positive electrode plate group and the negative electrode plate group are connected together by a number of second support components, with at least some of the electrode plates in the same group connected together.

2. The electrostatic filtration device according to claim 1, characterized in that, On the windward side, the positive electrode plate group and the negative electrode plate group also use at least one of the first support components to connect the electrode plates in different groups together.

3. The electrostatic filtration device according to claim 2, characterized in that, Also includes: A shielding device is used to shield the first support member installed on the windward side so that the first support member does not directly face the unpurified gas.

4. The electrostatic filtration device according to claim 2, characterized in that, The positive electrode plate group and the negative electrode plate group are connected together by a first support member at the upper and lower edges of the windward side.

5. The electrostatic filtration device according to any one of claims 1 to 4, characterized in that, Also includes: Insulating support plates located on both sides of the positive electrode plate group and the negative electrode plate group. The first support component and the second support component are also respectively connected to the insulating support plate.

6. The electrostatic filtration device according to claim 5, characterized in that, At least one set of adjacent positive and negative electrode plates located at both edges are connected together on the windward side using a number of third support members. The second support member is configured to connect other electrode plates in the same set, except for the electrode plates connected to the third support member. or The second support member is configured to connect at least one set of adjacent positive and negative electrode plates located at both sides of the edge together on the windward side, and to connect other electrode plates in the same set together.

7. The electrostatic filtration device according to any one of claims 1 to 4, characterized in that, At least one set of adjacent positive and negative electrode plates located at both edges are connected together on the windward side using several third support components. The second support member is configured to connect other electrode plates, except those connected to the third support member in the same group, together.

8. The electrostatic filtration device according to claim 7, characterized in that, Also includes: The outer frame shields the third support component, preventing the third support component from directly facing the unpurified gas.

9. The electrostatic filtration device according to any one of claims 1 to 4, characterized in that, The second support member is configured to connect at least one set of adjacent positive and negative electrode plates located at both sides of the edge together on the windward side, and to connect other electrode plates in the same set together.

10. The electrostatic filtration device according to claim 9, characterized in that, Also includes: The outer frame shields the support portion of the second support member used to connect the at least one set of adjacent positive and negative electrode plates, so that the support portion does not directly face the unpurified gas.

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