Cooling device for frequency converter

Abstract

The utility model belongs to the technical field of cooling devices, in particular to a cooling device for a frequency converter, which comprises a fin mechanism and an air draft device, a mounting plate is mounted on the front side of the fin mechanism, a top plate is arranged in the mounting plate, a threaded groove is arranged on one side of the mounting plate, a threaded rod is in threaded connection with the inside of the threaded groove, and the air draft device is arranged on the top plate. A connecting assembly is arranged on the top plate, and one end of the threaded rod is connected with the top plate through the connecting assembly. According to the cooling device, the mounting plate is mounted, so that the cooling device and the frequency converter body are conveniently disassembled and assembled, firstly, the threaded rod is rotated, the threaded rod rotates in the threaded groove to synchronously push the top plate to move forwards, the top plate moves to one side of the frequency converter body, and the two sides of the frequency converter body are clamped through one side of the mounting plate and the top plate; and finally, the nut is rotated to one side of the threaded groove to limit the position of the nut, so that the cooling device is stably mounted on the frequency converter, the operation is simple and convenient, and the cooling device on the frequency converter can be quickly disassembled and assembled.

Description

Technical Field

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

[0002] A frequency converter is a power control device that controls the operation of an AC motor by changing the frequency and amplitude of the power supply. Its main functions include speed regulation, energy saving, and protection. It is widely used in various loads such as fans, pumps, compressors, and injection molding machines. During operation, frequency converters generate a significant amount of heat, primarily due to the power consumption and losses of electronic components. If the frequency converter is not cooled effectively and promptly, it can lead to overheating and even damage. Therefore, the main function of a frequency converter cooling system is to control its temperature through heat dissipation, ensuring it operates within a safe operating temperature range, thereby improving system efficiency and reliability.

[0003] Patent document CN219248485U discloses a cooling device for a high-voltage frequency converter, comprising a fan, a protective net fixedly installed at the front end of the fan, a cleaning brush slidably installed at the front of the protective net, a return spring fixedly connected between the protective net and the cleaning brush, the protective net and the cleaning brush being snapped together, the fan comprising a frame and a body, the body being fixedly connected inside the frame, a clearance groove being provided at the front of the frame, the protective net comprising a frame, guide rods and threaded blocks, the guide rods being symmetrically fixedly connected to the frame, the threaded blocks being fixedly connected to the frame, and the protective net further comprising a protective net fixedly connected to the frame. The dust removal brush is pushed into the fan when cleaning is required, and then the protective net is fastened to the brush. The relative friction between the fan rotation and the brush facilitates the cleaning of dust inside the fan. However, the cooling devices for high-voltage frequency converters in the aforementioned publications mainly consider cleaning dust inside the fan, without considering that special tools or complex operations may be required to install or remove the cooling device from the frequency converter during maintenance. This increases the difficulty and cost of maintenance. Therefore, it is necessary to develop a cooling device for frequency converters that allows for quick installation and removal of the cooling device from the frequency converter. Utility Model Content

[0004] The purpose of this utility model is to provide a cooling device for frequency converters to solve the technical problem of inconvenient disassembly and assembly of cooling devices mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for a frequency converter, comprising a finned mechanism, the front side of which is connected to the frequency converter body, the finned mechanism comprising a plurality of spaced fins, a cooling pipe and an exhaust device provided on the finned mechanism, the cooling pipe being disposed inside the finned mechanism, and both ends of the cooling pipe extending out of the interior of the finned mechanism, the exhaust device being disposed on the rear side of the finned mechanism, a frame being connected to the finned mechanism, and the exhaust device being disposed within the frame, a filter screen being installed on one side of the frame, and the filter screen being located on one side of the exhaust device;

[0006] A mounting plate is fixedly installed on the front side of the fin mechanism. A top plate is movably arranged inside the mounting plate. A threaded groove is provided on one side of the mounting plate. A threaded rod is threadedly connected in the threaded groove. A connecting assembly is provided on the top plate. One end of the threaded rod is connected to the top plate through the connecting assembly. A guide assembly is provided inside the mounting plate. The top plate is connected to the mounting plate through the guide assembly.

[0007] Preferably, the connecting assembly includes a connecting groove, an annular groove, and an annular protrusion. The connecting groove is disposed on the top plate, the annular groove is disposed around the inner wall of the connecting groove, and the annular protrusion is slidably installed in the annular groove and fixedly installed at one end of the threaded rod.

[0008] Preferably, the guide assembly includes a guide groove and a slider. The guide groove is disposed within the mounting plate, the slider is slidably mounted within the guide groove, and the other end of the slider is fixedly connected to one side of the top plate.

[0009] Preferably, a nut is threaded onto the threaded rod, and the nut is located on one side of the mounting plate.

[0010] Preferably, a storage box is fixedly installed on one side of the frame, a motor is fixedly installed inside the storage box, a lead screw is fixedly connected to the output end of the motor, a slip ring is threaded onto the lead screw, an extension rod is fixedly installed on the slip ring, one end of the extension rod extends through the interior of the storage box, a scraper is fixedly connected to one end of the extension rod, and the scraper is located in front of the filter screen and in contact with the filter screen.

[0011] Preferably, a slot is provided on one side of the storage box, and one end of the extension rod passes through the slot and extends out of the interior of the storage box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model facilitates the assembly and disassembly of the cooling device from the inverter body by installing an mounting plate. First, the threaded rod is rotated in the reverse direction, causing the top plate to move towards one side of the mounting plate, increasing the opening of the mounting plate. Then, the mounting plate is clamped onto the back of the inverter body. Next, the threaded rod is rotated in the forward direction. The rotation of the threaded rod in the thread groove will simultaneously push the top plate forward. The top plate will move to one side of the inverter body, and the mounting plate and the top plate will clamp the two sides of the inverter body. Finally, the nut is rotated to one side of the thread groove to limit the position of the nut, thereby stably installing the cooling device on the inverter (disassembly is the same). The operation is simple and convenient, and the cooling device on the inverter can be quickly assembled, disassembled, maintained, or replaced.

[0014] 2. This utility model facilitates filter cleaning by installing a scraper. First, the motor is started wirelessly, which drives the lead screw to rotate. When the lead screw rotates, it drives the extension rod to slide in the strip groove through the slip ring. When the extension rod moves, it simultaneously drives the scraper to move on the filter screen. As the scraper moves, it removes dust from the filter screen, preventing dust and impurities from accumulating on the filter screen and clogging it during long-term use of the cooling device. This would obstruct airflow and affect the heat dissipation efficiency, thus ensuring the heat dissipation efficiency of the cooling device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the guide groove structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the connecting groove and the threaded rod of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the storage box of this utility model.

[0019] In the diagram: 1. Inverter body; 2. Fins; 3. Cooling pipe; 4. Frame; 5. Exhaust device; 6. Filter screen; 7. Mounting plate; 8. Top plate; 9. Threaded groove; 10. Threaded rod; 11. Connecting groove; 12. Annular groove; 13. Annular protrusion; 14. Guide groove; 15. Slider; 16. Nut; 17. Storage box; 18. Motor; 19. Lead screw; 20. Slip ring; 21. Extension rod; 22. Strip groove; 23. Scraper. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 - Figure 4 A cooling device for a frequency converter includes a finned mechanism. The front side of the finned mechanism is connected to the frequency converter body 1. The finned mechanism includes multiple spaced fins 2. Cooling pipes 3 and an exhaust fan 5 are provided on the finned mechanism. The cooling pipes 3 are located inside the finned mechanism, with both ends extending out of the interior of the finned mechanism. The exhaust fan 5 is located on the rear side of the finned mechanism. A frame 4 is connected to the finned mechanism, and the exhaust fan 5 is located inside the frame 4. A filter 6 is installed on one side of the frame 4, and the filter 6 is located on one side of the exhaust fan 5. When cooling the frequency converter, the heat generated during operation is transferred to the fins 2, increasing the heat dissipation area. The cooling pipes 3 contain coolant. When the heat is transferred to the fins 2, the coolant absorbs the heat from the fins 2. At the same time, the exhaust fan 5 starts to work (the exhaust fan 5 includes a motor and an exhaust fan). The exhaust fan draws in the surrounding air and makes the air flow through the fins 2 to remove the heat from the fins 2. As the exhaust fan 5 continuously removes the heat from the fins 2, the temperature of the fins 2 is relatively reduced, thus forming a temperature difference. This cycle repeats continuously, dissipating the heat generated by the frequency converter and achieving the heat dissipation function of the frequency converter. However, when maintaining the cooling device, special tools or complex operations may be required to install or remove the cooling device from the frequency converter, which increases the difficulty and cost of maintenance.

[0022] A mounting plate 7 is fixedly installed on the front side of the fin mechanism. A top plate 8 is movably installed inside the mounting plate 7. A threaded groove 9 is provided on one side of the mounting plate 7, and a threaded rod 10 is threadedly connected inside the threaded groove 9. A connecting assembly is provided on the top plate 8, and one end of the threaded rod 10 is connected to the top plate 8 through the connecting assembly. A guide assembly is provided inside the mounting plate 7, and the top plate 8 is connected to the mounting plate 7 through the guide assembly. A nut 16 is threadedly connected to the threaded rod 10, and the nut 16 is located on one side of the mounting plate 7. When it is convenient to disassemble and assemble the cooling device from the inverter body 1, the mounting plate 7 facilitates the disassembly and assembly of the cooling device from the inverter body 1. First, rotate the threaded rod in the opposite direction. Rod 10 moves the top plate 8 toward one side of the mounting plate 7, increasing the opening of the mounting plate 7. Then, the mounting plate 7 is clamped onto the back of the inverter body 1. Then, the threaded rod 10 is rotated forward. The rotation of the threaded rod 10 in the threaded groove 9 will simultaneously push the top plate 8 forward. The top plate 8 will move to one side of the inverter body 1 and clamp both sides of the inverter body 1 through one side of the mounting plate 7 and the top plate 8. Finally, the nut 16 is rotated to one side of the threaded groove 9 to limit the position of the nut 16, thereby making the cooling device stably installed on the inverter (disassembly is the same). The operation is simple and convenient, and the cooling device on the inverter can be quickly disassembled, installed, maintained, or replaced.

[0023] Please see Figure 2 and Figure 3 The connecting assembly includes a connecting groove 11, an annular groove 12, and an annular protrusion 13. The connecting groove 11 is disposed on the top plate 8, the annular groove 12 is disposed around the inner wall of the connecting groove 11, and the annular protrusion 13 is slidably installed in the annular groove 12 and fixedly installed at one end of the threaded rod 10. When the threaded rod 10 is rotated, the threaded rod 10 will rotate in the annular groove 12 through the annular protrusion 13, so that the threaded rod 10 is movably connected to the top plate 8. In this way, when the threaded rod 10 moves forward, it will not drive the top plate 8 to rotate synchronously, but will only push the top plate 8 to perform linear motion synchronously.

[0024] Please see Figure 2 The guide assembly includes a guide groove 14 and a slider 15. The guide groove 14 is disposed in the mounting plate 7, and the slider 15 is slidably installed in the guide groove 14. The other end of the slider 15 is fixedly connected to one side of the top plate 8. When the top plate 8 moves through the threaded rod 10, the top plate 8 will move synchronously in the guide groove 14 through the slider 15, maintaining the top plate 8 to perform stable linear movement, and playing a guiding and limiting role for the top plate 8.

[0025] Please see Figure 1 and Figure 4A storage box 17 is fixedly installed on one side of the frame 4. A motor 18 is fixedly installed inside the storage box 17. A lead screw 19 is fixedly connected to the output end of the motor 18. A slip ring 20 is threaded onto the lead screw 19. An extension rod 21 is fixedly installed on the slip ring 20, and one end of the extension rod 21 extends through the interior of the storage box 17. A scraper 23 is fixedly connected to one end of the extension rod 21, and the scraper 23 is located in front of and in contact with the filter screen 6. A strip groove 22 is provided on one side of the storage box 17, and one end of the extension rod 21 extends through the strip groove 22 through the interior of the storage box 17. When cleaning the filter screen 6... The installation of a scraper 23 facilitates the cleaning of the filter screen 6. First, the motor 18 is started wirelessly, which drives the lead screw 19 to rotate. When the lead screw 19 rotates, it drives the extension rod 21 to slide in the strip groove 22 through the slip ring 20. When the extension rod 21 moves, it simultaneously drives the scraper 23 to move on the filter screen 6. When the scraper 23 moves, it scrapes off the dust on the filter screen 6, preventing dust and impurities from accumulating on the filter screen 6 and clogging it during long-term use of the cooling device. This would obstruct airflow and affect the heat dissipation efficiency, thus ensuring the heat dissipation efficiency of the cooling device.

[0026] Working principle: The mounting plate 7 facilitates the assembly and disassembly of the cooling device from the inverter body 1. First, the threaded rod 10 is rotated in the reverse direction, causing the top plate 8 to move towards one side of the mounting plate 7, increasing the opening of the mounting plate 7. Then, the mounting plate 7 is secured to the back of the inverter body 1. Next, the threaded rod 10 is rotated in the forward direction. The rotation of the threaded rod 10 within the threaded groove 9 synchronously pushes the top plate 8 forward. The top plate 8 moves to one side of the inverter body 1, where it is clamped by one side of the mounting plate 7 and the top plate 8. Finally, the nut 16 is rotated to one side of the threaded groove 9 to limit its position, thus stably installing the cooling device on the inverter (disassembly is similar). The operation is simple. Convenient and quick, the cooling device on the inverter can be disassembled, installed, maintained, or replaced. The scraper 23 facilitates cleaning of the filter screen 6. First, the motor 18 is started wirelessly. The motor 18 drives the lead screw 19 to rotate. When the lead screw 19 rotates, it drives the extension rod 21 to slide in the strip groove 22 through the slip ring 20. When the extension rod 21 moves, it drives the scraper 23 to move on the filter screen 6. When the scraper 23 moves, it scrapes off the dust on the filter screen 6, preventing dust and impurities from accumulating on the filter screen 6 during long-term use and causing blockage, which would obstruct airflow and affect the heat dissipation efficiency. This ensures the heat dissipation efficiency of the cooling device.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cooling device for a frequency converter, comprising a finned mechanism, the front side of which is connected to the frequency converter body (1), characterized in that: The fin mechanism includes multiple spaced fins (2), and the fin mechanism is provided with a cooling pipe (3) and an exhaust device (5). The cooling pipe (3) is located inside the fin mechanism, and both ends of the cooling pipe (3) extend out of the interior of the fin mechanism. The exhaust device (5) is located on the rear side of the fin mechanism. A frame (4) is connected to the fin mechanism, and the exhaust device (5) is located inside the frame (4). A filter screen (6) is installed on one side of the frame (4), and the filter screen (6) is located on one side of the exhaust device (5). A mounting plate (7) is fixedly installed on the front side of the fin mechanism. A top plate (8) is movably arranged inside the mounting plate (7). A threaded groove (9) is provided on one side of the mounting plate (7). A threaded rod (10) is threadedly connected inside the threaded groove (9). A connecting component is provided on the top plate (8), and one end of the threaded rod (10) is connected to the top plate (8) through the connecting component. A guide component is provided inside the mounting plate (7), and the top plate (8) is connected to the mounting plate (7) through the guide component.

2. The cooling device for a frequency converter according to claim 1, characterized in that: The connecting assembly includes a connecting groove (11), an annular groove (12), and an annular protrusion (13). The connecting groove (11) is disposed on the top plate (8). The annular groove (12) is disposed around the inner wall of the connecting groove (11). The annular protrusion (13) is slidably installed in the annular groove (12) and is fixedly installed at one end of the threaded rod (10).

3. A cooling device for a frequency converter according to claim 1, characterized in that: The guide assembly includes a guide groove (14) and a slider (15). The guide groove (14) is disposed in the mounting plate (7), and the slider (15) is slidably mounted in the guide groove (14). The other end of the slider (15) is fixedly connected to one side of the top plate (8).

4. A cooling device for a frequency converter according to claim 1, characterized in that: The threaded rod (10) is threaded with a nut (16), and the nut (16) is located on one side of the mounting plate (7).

5. A cooling device for a frequency converter according to claim 1, characterized in that: A storage box (17) is fixedly installed on one side of the frame (4). A motor (18) is fixedly installed inside the storage box (17). A lead screw (19) is fixedly connected to the output end of the motor (18). A slip ring (20) is threaded onto the lead screw (19). An extension rod (21) is fixedly installed on the slip ring (20). One end of the extension rod (21) extends through the interior of the storage box (17). A scraper (23) is fixedly connected to one end of the extension rod (21). The scraper (23) is located in front of the filter screen (6) and is in contact with the filter screen (6).

6. A cooling device for a frequency converter according to claim 5, characterized in that: The storage box (17) has a strip groove (22) on one side, and one end of the extension rod (21) passes through the strip groove (22) and exits the interior of the storage box (17).

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