Active filtering device with dustproof function

Abstract

The utility model relates to an active filtering device with a dustproof function, which belongs to the technical field of active filtering equipment, and comprises a box body, a capacitor assembly, a radiating fin, an IGBT (Insulated Gate Bipolar Translator) assembly, an inductance assembly, a fan assembly, a control panel assembly and a sealing element are arranged in the box body, the radiating fin is arranged in the IGBT assembly, and the inductance assembly is arranged in the box body. The sealing member comprises a terminal board foam, a sealing sponge strip, a dial switch foam, a capacitor board silica gel strip and an IGBT silica gel strip. After the structure is adopted, the active filter has the advantages that the protection level of the active filter is increased, and compared with other products, the active filter can stably operate under more severe conditions. The air duct is sealed in a glue spraying mode, and compared with glue dispensing or gluing, the glue spraying mode is faster and lower in cost. The sealing mode adopts the sealing foam and the sealing silica gel strip, compared with the mode of coating single-component glue, the step of drying the glue is omitted, the method is suitable for line production, and the silica gel strip has little influence on electronic components compared with the single-component glue.

Description

Technical Field

[0001] The utility model relates to the technical field of active filtering equipment, in particular to an active filtering device with a dustproof function. Background Art

[0002] At present, the research and development of domestic active filters are rapid and are approaching the international advanced level. However, domestic active filters still have many shortcomings, such as insufficient protection level and inability to work for a long time in harsh environments. With the development of the industry, higher requirements are put forward for the protection level of active filters.

[0003] The primary purpose of the existing active filter device structure technology is to change the installation method of the structural parts under the existing external dimensions to facilitate the application of glue protection, thereby increasing the device's protection level to IP54, so that the product can work stably in harsh environments with conductive dust. However, the mode of applying single-component glue also requires a step of drying the glue, which is not suitable for assembly line operations, and the single-component glue has a greater impact on electronic components. Utility Model Content

[0004] The utility model aims to solve the above technical problems and provides an active filtering device with dustproof function.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] An active filter device with dustproof function, comprising a box, wherein a capacitor assembly, a heat sink, an IGBT assembly, an inductor assembly, a fan assembly, a control board assembly and a seal are installed in the box, wherein the heat sink is installed in the IGBT assembly, and the seal comprises a terminal board foam, a sealing sponge strip, a DIP switch foam, a capacitor board silicone strip and an IGBT silicone strip;

[0007] IGBT silicone strips are used to fill and seal between the IGBT modules in the IGBT assembly;

[0008] The IGBT component and the capacitor component are sealed with a capacitor plate silicone strip;

[0009] A sealing sponge strip is used to fill and seal between the capacitor assembly and the box body.

[0010] The capacitor component and the inductor component are sealed by spraying glue to form a 0.5-1 mm sealing spray glue layer.

[0011] Preferably, the box body includes a box bottom plate, a box left plate, a box top plate, a box front plate, a box rear plate and a box right plate, and the box body is connected with a capacitor support plate for supporting the capacitor assembly, a heat sink support plate in the IGBT assembly, an inductor support plate in the inductor assembly, a box rear plate in the box rear plate, a control mounting plate in the control board assembly, a fan mounting plate in the fan assembly, and a box front plate in the box front plate.

[0012] Preferably, a sealing sponge strip is used to fill and seal between the capacitor assembly and the front plate of the box.

[0013] Preferably, the air duct gap of the IGBT component is filled and sealed with a silicone strip.

[0014] Preferably, a terminal board assembly is installed on the rear plate of the box body, and the terminal board foam is installed on the terminal board assembly.

[0015] Preferably, a dip switch assembly is installed on the front plate of the box body, and the dip switch foam is installed on the dip switch assembly.

[0016] After adopting the above structure, the utility model has the following advantages:

[0017] The utility model realizes an increase in the protection level of the active filter, and can operate stably under more severe conditions compared to other products. The air duct is sealed by spraying glue, which is faster and less costly than dispensing or coating glue. The sealing adopts the sealing foam and sealing silicone strips, which saves the step of drying glue compared to the mode of coating single-component glue, and is suitable for assembly line operation. In addition, the silicone strips have less impact on electronic components than single-component glue.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is an internal schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the sealing element of the utility model;

[0022] Figure 3 It is a schematic diagram and an enlarged diagram of the IGBT module structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the sealing spray glue layer of the utility model;

[0024] Figure 5 It is a schematic diagram of the sealing spray glue layer of the utility model.

[0025] As shown in the figure: 1. Box bottom plate; 2. Capacitor assembly; 3. Box left plate; 4. IGBT assembly; 5. Inductor assembly; 6. Box back plate; 7. Terminal board assembly; 8. Box top plate; 9. Box right plate; 10. Control board assembly; 11. Fan assembly; 12. Box front plate; 13. DIP switch assembly; 14. Terminal board foam; 15. Sealing sponge strip; 16. DIP switch foam; 17. Capacitor board silicone strip; 18. IGBT silicone strip; 19. Sealing spray layer; DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] The utility model is further described in detail below in conjunction with the full text.

[0029] Combined with Figure 1-Figure 5 , an active filter device with dustproof function, comprising a box body, in which a capacitor assembly 2, a heat sink, an IGBT assembly 4, an inductor assembly 5, a fan assembly 11, a control board assembly 10 and a seal are installed, the heat sink is installed in the IGBT assembly 4, and the seal comprises a terminal board foam 14, a sealing sponge strip 15, a DIP switch foam 16, a capacitor plate silicone strip 17 and an IGBT silicone strip 18;

[0030] IGBT modules in the IGBT assembly 4 are filled and sealed with IGBT silicone strips 18;

[0031] The IGBT assembly 4 and the capacitor assembly 2 are sealed with a capacitor plate silicone strip 17;

[0032] The capacitor assembly 2 and the box body are sealed with a sealing sponge strip 15;

[0033] The capacitor assembly 2 and the inductor assembly 5 are sealed by spraying glue to form a 0.5-1 mm sealing spray glue layer 19. The box includes a box bottom plate 1, a box left plate 3, a box top plate 8, a box front plate 12, a box rear plate 6 and a box right plate 9. The box is connected with a capacitor support plate for supporting the capacitor assembly 2, a heat sink support plate in the IGBT assembly 4, an inductor support plate in the inductor assembly 5, a box rear plate in the box rear plate 6, a control mounting plate in the control board assembly 10, a fan mounting plate in the fan assembly 11, and a box front plate in the box front plate 12.

[0034] A sealing sponge strip 15 is used to fill and seal between the capacitor assembly 2 and the front plate 12 of the box.

[0035] The air duct gap of the fan assembly 11 is filled and sealed by spraying glue.

[0036] A terminal board assembly 7 is installed on the box rear plate 6 . Specifically, the terminal board foam 14 is installed on the terminal board assembly 7 .

[0037] A dip switch assembly 13 is installed on the box front plate 12 . Specifically, the dip switch foam 16 is installed on the dip switch assembly 13 .

[0038] The present active filter device includes four categories: circuit boards, electrical components, mounting parts and seals. The main purpose is to optimize the structural technology, so the circuit boards and electrical components are not described in detail here. The mounting parts include three categories: sheet metal parts, mounting parts accessories, and heat sinks. Among them, the sheet metal parts include the bottom plate 1 of the box, the left plate 3 of the box, the top plate 8 of the box, and the right plate 9 of the box. In addition, the sheet metal parts also include the capacitor support plate in the capacitor assembly 2, the heat sink support plate in the IGBT assembly 4, the inductor support plate in the inductor assembly 5, the control installation support plate in the control board assembly 10, and the fan installation plate in the fan assembly 11; the mounting parts accessories include screws and nuts, plastic rivets, cable ties, cable holders, sealing rings, etc.; the heat sink is installed in the IGBT assembly 4; the seals include terminal board foam 14, sealing sponge strips 15, code switch foam 16, capacitor plate silicone strips 17, IGBT silicone strips 18 and AB electronic potting glue, etc.

[0039] During the specific implementation of the utility model, the gaps between the air duct and the electronic layer of the device are mainly between the IGBT modules in the IGBT assembly 4, between the IGBT assembly 4 and the capacitor assembly 2, and between the capacitor assembly 2 and the box front plate 12. The gaps between the IGBT modules in the IGBT assembly 4 are filled with IGBT silicone strips 18, the gaps between the IGBT assembly 4 and the capacitor assembly 2 are filled with capacitor plate silicone strips 17, and the gaps between the capacitor assembly 2 and the box front plate 12 are filled with sealing sponge strips 15.

[0040] During the specific implementation of the utility model, the gaps in the air duct of the device are sealed with silicone strips or sponge strips, which are more suitable for assembly line operations than gluing. The use of silicone strips in key parts has less impact on electrical components than gluing.

[0041] In the specific implementation of the utility model, after filling the gap, the entire module is turned over, and glue is sprayed on the back of the inductor component and the back of the capacitor component until there is a sealing layer of about 0.5-1mm. Because there is a heat sink between the IGBT components, the glue needs to be sprayed obliquely to ensure that the potting glue is completely covered; the fan needs to be protected, and can be removed and then sprayed with glue, and then assembled back after spraying the glue.

[0042] In summary, the utility model active filter device effectively utilizes space, provides dust and water protection on the original basis, and does not increase the device's external dimensions, thus achieving the versatility of the product; the internal air duct of the device is perfectly isolated from the electronic sealing layer, which improves the heat dissipation efficiency while greatly reducing the impact of impurities such as weak dust on weak electricity, thereby improving the safety performance and service life of the device. The structural technology of the utility model active filter device is carefully designed on the premise of ensuring its superior functional role, and has superior performance such as structural novelty, usability, reliability, and versatility; it is a safe, reliable, novel, and practical new device.

[0043] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. An active filter device with dustproof function, comprising a housing, wherein a capacitor assembly (2), a heat sink, an IGBT assembly (4), an inductor assembly (5), a fan assembly (11), a control board assembly (10) and a seal are installed in the housing, characterized in that: The heat sink is installed in the IGBT assembly (4), and the sealing element comprises a sealing sponge strip (15), a capacitor plate silicone strip (17) and an IGBT silicone strip (18); An IGBT silicone strip (18) is used to fill and seal between the IGBT modules in the IGBT assembly (4); A capacitor plate silicone strip (17) is used to fill and seal between the IGBT component (4) and the capacitor component (2); A sealing sponge strip (15) is used to fill and seal between the capacitor assembly (2) and the box body.

2. The active filter device with dust-proof function according to claim 1, characterized in that: The capacitor component (2) and the inductor component (5) are sealed by spraying glue to form a 0.5-1 mm sealing spraying glue layer (19).

3. The active filter device with dust-proof function according to claim 1, characterized in that: The box body comprises a box body bottom plate (1), a box body left plate (3), a box body top plate (8), a box body front plate (12), a box body rear plate (6) and a box body right plate (9), and the box body is provided with a capacitor support plate for supporting the capacitor assembly (2), a heat sink support plate in the IGBT assembly (4), an inductor support plate in the inductor assembly (5), a control mounting plate in the control board assembly (10), and a fan mounting plate in the fan assembly (11).

4. The active filter device with dust-proof function according to claim 3, characterized in that: A sealing sponge strip (15) is used to fill and seal between the capacitor assembly (2) and the front plate (12) of the box body.

5. The active filter device with dust-proof function according to claim 1, characterized in that: The air duct gap of the fan assembly (11) is filled and sealed by spraying glue.

6. The active filter device with dust-proof function according to claim 3, characterized in that: A terminal board assembly (7) is installed on the box body rear plate (6), and a terminal board foam (14) is installed on the terminal board assembly (7).

7. The active filter device with dust-proof function according to claim 3, characterized in that: A dip switch assembly (13) is mounted on the box front plate (12), and a dip switch foam (16) is mounted on the dip switch assembly (13).

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