A circulating cooling device for frequency converters

Abstract

This utility model relates to the field of frequency converter technology, and in particular to a circulating cooling device for frequency converters, including a frequency converter body and a cooling mechanism. A fan is embedded in the top of the frequency converter body, and a flow guide valve is connected to the top of the frequency converter body. A connecting pipe is connected to the top of the flow guide valve. This utility model can filter and dehumidify circulating air. During use, the connecting pipe introduces circulating cold air into the filter box, allowing the filter plate to filter dust and impurities. At the same time, the desiccant placed in the box also dehumidifies the air, preventing excessive moisture content. Simultaneously, during use, a second suction pump delivers cold air to the air blowing block through the suction pipe, allowing the air blowing block to blow up dust adhering to the equipment. Then, a negative pressure pump sucks the dust into a mesh dust collection box for centralized collection. Finally, the exhausted air is reintroduced into the connecting pipe for recycling.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically to a circulating cooling device for frequency converters. Background Technology

[0002] A frequency converter mainly consists of a rectifier for AC to DC, a filter, an inverter for DC to AC, a braking unit, a drive unit, a detection unit, and a microprocessor unit. The frequency converter adjusts the voltage and frequency of the output power supply by switching the internal IGBTs, and provides the required power voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation.

[0003] A search revealed that the announcement number is CN220307638U, and the name is "A Circulating Cooling Device for Frequency Converters," which includes the frequency converter body. Through research and analysis, it was found that this device solves the problem that existing cooling devices only rely on natural wind generated by the rotation of fan blades to exchange heat between the inside and outside of the frequency converter, resulting in poor cooling effect and the inability to remove dust that has already adhered to the inside of the frequency converter, thus affecting the heat dissipation effect of the frequency converter. However, it still has the following drawbacks to a certain extent.

[0004] For example, the circulating cooling device for this frequency converter does not have the function of filtering and dehumidifying the circulating cold air. The circulating cold air easily carries residual dust and water vapor and other impurities from inside the equipment into the cooling components. This can easily lead to dust and impurities adhering to the surface of the cooling components. Long-term adhesion of dust and impurities to the surface of the cooling components will reduce the cooling efficiency. At the same time, during long-term circulation, water vapor condensation may also affect the circuit insulation performance and reduce the reliability of equipment operation. Furthermore, it does not recycle the exhaust air during use, and the temperature of the directly discharged air is also low. Direct discharge not only wastes cooling capacity but also increases the energy consumption burden of the refrigeration system. In order to solve the above technical problems, we have designed a circulating cooling device for frequency converters. Utility Model Content

[0005] The purpose of this utility model is to provide a circulating cooling device for frequency converters, which has the advantages of filtering and dehumidifying the circulating cold air and reusing the air discharged from dust removal. It solves the problems of not having the function of filtering and dehumidifying the circulating cold air, the circulating cold air easily carrying the dust and water vapor and other impurities remaining in the equipment into the cooling components, and not having the function of reusing the air discharged from dust removal, which easily leads to the waste of cooling capacity when directly discharged.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a circulating cooling device for a frequency converter, comprising a frequency converter body and a cooling mechanism. A fan is embedded in the top of the frequency converter body, a flow guide valve is connected to the top of the frequency converter body, and a connecting pipe is connected to the top of the flow guide valve. A dust removal mechanism is provided on the left side of the frequency converter body, and an air blowing mechanism is provided on the right side of the frequency converter body. The dust removal mechanism includes a mesh dust collection box, which is fixedly installed on the left side of the frequency converter body. The cooling mechanism includes a cooling box, which is movably installed on the right side of the frequency converter body. The air blowing mechanism includes a support frame, which is fixedly installed on the right side of the frequency converter body.

[0007] Preferably, a filter box is fixedly installed on the top of the refrigeration box, a filter plate is fixedly installed horizontally in the inner cavity of the filter box, a mounting support plate is fixedly connected to the rear side of the inner cavity of the filter box, and a placement box is movably installed in the inner cavity of the mounting support plate.

[0008] Preferably, a temperature sensor is installed through the left side of the refrigeration box, and a semiconductor cooler is installed through the rear side of the refrigeration box.

[0009] Preferably, a first air pump is fixedly installed on the left side of the refrigeration box, and an air outlet plate is fixedly installed at the bottom of the inner cavity of the inverter body. The air outlet end of the first air pump passes through the inner cavity of the inverter body and communicates with the air outlet plate.

[0010] Preferably, a connecting valve is connected to the right side of the mesh dust collection box, and the right side of the connecting valve is connected to the main body of the frequency converter. A negative pressure pump is fixedly connected to the left side of the mesh dust collection box, and a connecting pipe is connected to the outlet end of the negative pressure pump. The end of the connecting pipe away from the negative pressure pump is connected to the connecting pipe.

[0011] Preferably, a drive motor is fixedly installed on the top of the support frame, the output end of the drive motor passes through the inner cavity of the support frame and is fixedly connected to a threaded rod, and a second air pump is fixedly connected to the right side of the top of the inverter body.

[0012] Preferably, the outlet end of the second air pump is connected to a telescopic pipe, the surface of the threaded rod is threaded with an air blowing block, the bottom of the telescopic pipe is connected to the air blowing block, the inlet end of the second air pump is connected to an air extraction pipe, and the bottom end of the air extraction pipe is connected to the refrigeration box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model, comprising a fan, a guide valve, a connecting pipe, a refrigeration box, a semiconductor cooler, a first suction pump, an air outlet plate, a filter box, a telescopic pipe, a filter plate, a placement box, a mesh dust collection box, a connecting valve, a negative pressure pump, a connecting pipe, a drive motor, a threaded rod, an air blowing block, a second suction pump, and a suction pipe, works together to filter and dehumidify circulating air. During use, the connecting pipe guides circulating cool air into the filter box, allowing the filter plate to filter dust and impurities. Simultaneously, the desiccant in the placement box dehumidifies the air, preventing excessive moisture content. Meanwhile, the second suction pump delivers cool air to the air blowing block through the suction pipe, causing the air blowing block to blow up dust adhering to the equipment. The negative pressure pump then draws the dust into the mesh dust collection box for centralized collection. Finally, the exhausted air is reintroduced into the connecting pipe for reuse. Attached Figure Description

[0015] Figure 1 This is a three-dimensional cross-sectional view of the structure of this utility model;

[0016] Figure 2 This is a rear perspective view of the structure of this utility model;

[0017] Figure 3 This is a sectional perspective view of a portion of the refrigeration mechanism of this utility model;

[0018] Figure 4 This is a perspective view of a partial structure of the dust removal mechanism of this utility model;

[0019] Figure 5 This is a sectional perspective view of the air blowing mechanism of this utility model.

[0020] In the diagram: 1. Inverter body; 2. Fan; 3. Flow guide valve; 4. Connecting pipe; 5. Refrigeration mechanism; 6. Air blowing mechanism; 7. Dust removal mechanism; 8. Refrigeration box; 9. Semiconductor refrigerator; 10. Temperature sensor; 11. First suction pump; 12. Air outlet plate; 13. Filter box; 14. Telescopic pipe; 15. Filter plate; 16. Mounting support plate; 17. Placement box; 18. Mesh dust collection box; 19. Connecting valve; 20. Negative pressure pump; 21. Connecting pipe; 22. Support frame; 23. Drive motor; 24. Threaded rod; 25. Air blowing block; 26. Second suction pump; 27. Suction pipe. Detailed Implementation

[0021] Please see Figures 1-5A circulating cooling device for a frequency converter includes a frequency converter body 1 and a cooling mechanism 5. A fan 2 is embedded in the top of the frequency converter body 1, and a flow guide valve 3 is connected to the top of the frequency converter body 1. A connecting pipe 4 is connected to the top of the flow guide valve 3. A dust removal mechanism 7 is provided on the left side of the frequency converter body 1, and an air blowing mechanism 6 is provided on the right side of the frequency converter body 1. The dust removal mechanism 7 includes a mesh dust collection box 18, which is fixedly installed on the left side of the frequency converter body 1. The cooling mechanism 5 includes a cooling box 8, which is movably installed on the right side of the frequency converter body 1. The air blowing mechanism 6 includes a support frame 22, which is fixedly installed on the right side of the frequency converter body 1. By setting the fan 2, the cooled air inside the frequency converter body 1 can be quickly introduced into the connecting pipe 4.

[0022] Please see Figure 1 , Figure 2 and Figure 3 A filter box 13 is fixedly installed on the top of the refrigeration box 8. A filter plate 15 is fixedly installed horizontally inside the filter box 13. A mounting support plate 16 is fixedly connected to the rear side of the filter box 13. A placement box 17 is movably installed inside the mounting support plate 16. The mounting support plate 16 facilitates the placement of the placement box 17 so that the desiccant inside the placement box 17 can perform dehumidification. The filter plate 15 can filter the dust in the circulating air to prevent dust residue in the circulating air.

[0023] Please see Figure 1 , Figure 2 and Figure 3 A temperature sensor 10 is installed through the left side of the refrigeration box 8, and a semiconductor cooler 9 is installed through the rear side of the refrigeration box 8. By setting the temperature sensor 10, the temperature inside the refrigeration box 8 can be monitored in real time.

[0024] Please see Figure 1 , Figure 2 and Figure 3 A first air pump 11 is fixedly installed on the left side of the refrigeration box 8, and an air outlet plate 12 is fixedly installed at the bottom of the inner cavity of the inverter body 1. The air outlet end of the first air pump 11 extends through the inner cavity of the inverter body 1 and communicates with the air outlet plate 12.

[0025] Please see Figure 1 , Figure 2 and Figure 4 A connecting valve 19 is connected to the right side of the mesh dust collection box 18. The right side of the connecting valve 19 is connected to the inverter body 1. A negative pressure pump 20 is fixedly connected to the left side of the mesh dust collection box 18. A connecting pipe 21 is connected to the air outlet of the negative pressure pump 20. The end of the connecting pipe 21 away from the negative pressure pump 20 is connected to the connecting pipe 4. By setting the connecting pipe 21, it is convenient for the negative pressure pump 20 to be connected to the connecting pipe 4.

[0026] Please see Figure 1 , Figure 2 and Figure 5 A drive motor 23 is fixedly installed on the top of the support frame 22. The output end of the drive motor 23 passes through the inner cavity of the support frame 22 and is fixedly connected to a threaded rod 24. A second air pump 26 is fixedly connected to the right side of the top of the inverter body 1.

[0027] Please see Figure 1 , Figure 2 and Figure 5 The outlet of the second air pump 26 is connected to a telescopic tube 14. A blowing block 25 is threaded onto the surface of the threaded rod 24. The bottom of the telescopic tube 14 is connected to the blowing block 25. The inlet of the second air pump 26 is connected to an air extraction pipe 27. The bottom of the air extraction pipe 27 is connected to the refrigeration box 8. The semiconductor refrigerator 9 is a TEC thermoelectric refrigerator. The second air pump 26 is a vortex air pump. By setting the air extraction pipe 27, it is convenient for the second air pump 26 to be connected to the refrigeration box 8 so that the second air pump 26 can introduce the cold air in the refrigeration box 8 into the telescopic tube 14.

[0028] In use, the user operates the equipment via an external controller. Simultaneously, the user places the molecular sieve desiccant into the placement box 17. While the inverter body 1 is operating, the user controls the first suction pump 11 and the semiconductor cooler 9. The cooling end of the semiconductor cooler 9 cools the cooling chamber 8. During cooling, the temperature sensor 10 monitors the cooling temperature inside the cooling chamber 8. The first suction pump 11 then guides the cold air from the cooling chamber 8 into the exhaust plate 12, allowing the exhaust plate 12 to deliver the cold air to the inverter body 1 for further cooling. After cooling, the user controls the guide valve 3 and the fan 2. The fan 2 guides the cooled air from the inverter body 1 through the guide valve 3 into the connecting pipe 4, which then guides the cold air into the filter box 13. The filter plate 15 filters the cold air, while the desiccant in the placement box 17 removes air impurities. After humidification, the air is re-entered into the refrigeration chamber 8 for re-cooling, enabling the equipment to circulate and cool. During use, the user periodically operates the negative pressure pump 20, the second suction pump 26, and the drive motor 23. The output of the drive motor 23 drives the air-blowing block 25 up and down via the threaded rod 24. Simultaneously, the second suction pump 26 guides the cold air from the refrigeration chamber 8 into the telescopic pipe 14 through the suction pipe 27, allowing the telescopic pipe 14 to guide the cold air into the air-blowing block 25, which then blows air. Block 25 then blows air into the inverter body 1, causing the dust attached to the inverter body 1 to float up. During the blowing process, the cold air also provides cooling. Then, the negative pressure pump 20 sucks the dust into the mesh dust collection box 18 through the connecting valve 19 for dust removal. Subsequently, the negative pressure pump 20 reintroduces the discharged air into the connecting pipe 4 through the connecting pipe 21, allowing the air to re-enter the filter box 13 for filtration and dehumidification, thus circulating the air.

[0029] In summary, this inverter uses a circulating cooling device. Through the cooperation of the inverter body 1, fan 2, flow guide valve 3, connecting pipe 4, cooling mechanism 5, air blowing mechanism 6, dust removal mechanism 7, cooling box 8, semiconductor cooler 9, and temperature sensor 10, it solves the problems of not having the function of filtering and dehumidifying the circulating cold air, the circulating cold air easily carrying residual dust and water vapor and other impurities in the equipment into the cooling components, and not having the function of recycling the air discharged from the dust removal, which easily leads to the waste of cooling capacity when directly discharged.

Claims

1. A circulating cooling device for a frequency converter, comprising a frequency converter body (1) and a cooling mechanism (5), characterized in that: A fan (2) is embedded in the top of the inverter body (1). A flow guide valve (3) is connected to the top of the inverter body (1). A connecting pipe (4) is connected to the top of the flow guide valve (3). A dust removal mechanism (7) is provided on the left side of the inverter body (1). An air blowing mechanism (6) is provided on the right side of the inverter body (1). The dust removal mechanism (7) includes a mesh dust collection box (18). The mesh dust collection box (18) is fixedly installed on the left side of the inverter body (1). The refrigeration mechanism (5) includes a refrigeration box (8). The refrigeration box (8) is movably installed on the right side of the inverter body (1). The air blowing mechanism (6) includes a support frame (22). The support frame (22) is fixedly installed on the right side of the inverter body (1).

2. The circulating cooling device for a frequency converter according to claim 1, characterized in that: A filter box (13) is fixedly installed on the top of the refrigeration box (8). A filter plate (15) is fixedly installed horizontally in the inner cavity of the filter box (13). An installation support plate (16) is fixedly connected to the rear side of the inner cavity of the filter box (13). A placement box (17) is movably installed in the inner cavity of the installation support plate (16).

3. The circulating cooling device for a frequency converter according to claim 1, characterized in that: A temperature sensor (10) is installed through the left side of the refrigeration box (8), and a semiconductor cooler (9) is installed through the rear side of the refrigeration box (8).

4. A circulating cooling device for a frequency converter according to claim 1, characterized in that: A first air pump (11) is fixedly installed on the left side of the refrigeration box (8), and an air outlet plate (12) is fixedly installed at the bottom of the inner cavity of the inverter body (1). The air outlet end of the first air pump (11) passes through the inner cavity of the inverter body (1) and communicates with the air outlet plate (12).

5. A circulating cooling device for a frequency converter according to claim 1, characterized in that: The right side of the mesh dust collection box (18) is connected to a connecting valve (19), and the right side of the connecting valve (19) is connected to the inverter body (1). The left side of the mesh dust collection box (18) is fixedly connected to a negative pressure pump (20), and the outlet end of the negative pressure pump (20) is connected to a connecting pipe (21). The end of the connecting pipe (21) away from the negative pressure pump (20) is connected to a connecting pipe (4).

6. A circulating cooling device for a frequency converter according to claim 1, characterized in that: A drive motor (23) is fixedly installed on the top of the support frame (22). The output end of the drive motor (23) passes through the inner cavity of the support frame (22) and is fixedly connected to a threaded rod (24). A second air pump (26) is fixedly connected to the right side of the top of the inverter body (1).

7. A circulating cooling device for a frequency converter according to claim 6, characterized in that: The outlet end of the second air pump (26) is connected to a telescopic pipe (14), and the surface of the threaded rod (24) is threaded with an air blowing block (25). The bottom of the telescopic pipe (14) is connected to the air blowing block (25). The inlet end of the second air pump (26) is connected to an air extraction pipe (27), and the bottom end of the air extraction pipe (27) is connected to the refrigeration box (8).

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