High-sealing vector type frequency converter

Abstract

The utility model relates to vector type frequency changer technical field, concretely is a kind of high sealing vector type frequency changer, including frequency converter shell, water storage shell and heat conduction copper bar, the heat conduction copper bar is adhesively fixed in frequency converter shell inner wall, the liquid flow channel is opened in the inside of heat conduction copper bar, the water inlet pipe is threadedly connected on the outer wall upper end of heat conduction copper bar, the return pipe is threadedly connected on the outer wall lower end of heat conduction copper bar, the water storage shell is screw connected with one side screw of frequency converter shell outer wall lower end, the sealing cover plate is screw connected with the outer wall of water storage shell, the inside of sealing cover plate is provided with linkage shaft, the flow of heat conduction medium can transport the temperature of heat conduction copper bar, auxiliary heat conduction copper bar temperature transfer to radiating fin, can improve the transmission speed of the temperature inside frequency converter shell, to improve the cooling efficiency inside frequency converter shell, the temperature inside frequency converter shell is guaranteed, realizes the purpose of protecting electrical component.

Description

Technical Field

[0001] This utility model relates to the field of vector inverter technology, and specifically to a high-sealing vector inverter. Background Technology

[0002] The high-sealing vector inverter is a type of inverter that combines high-sealing protection performance with vector control technology. The high sealing performance is achieved by using a fully enclosed housing design to isolate the internal electronic components from the external environment, ensuring the airtightness of the inverter's internal environment. Vector control is achieved by using coordinate transformation to decompose the stator current of the AC motor into excitation current and torque current, which are controlled separately. This decouples the motor torque and magnetic flux control, giving the motor good speed regulation performance similar to that of a DC motor, and allowing for precise control of the motor's speed, torque, and position.

[0003] CN220822886U discloses a high-sealing vector inverter. This utility model includes an inverter housing, on both sides of which are respectively provided a component mounting area and a heat dissipation area. The component mounting area and the heat dissipation area are not connected to each other. A heat-conducting backplate is fixedly connected in the component mounting area, and a heat sink is fixedly connected in the heat dissipation area on one side of the heat-conducting backplate. A closed partition is provided on the outside of the heat dissipation area. By separating the heat dissipation area and the component mounting area, heat is conducted between the heat dissipation area and the component mounting area through the heat-conducting backplate and the heat sink. At the same time, a fan blows airflow to dissipate heat from the heat sink inside the heat dissipation area, accelerating the heat conduction between the heat-conducting backplate and the heat sink. While dissipating heat for the inverter, there is no need to blow external airflow into the inverter, effectively preventing fine dust from entering the inverter.

[0004] While the existing technology CN220822886U has many advantages in use, it still has the following problems: its heat conduction efficiency for the heat-conducting copper busbar is not perfect. Since the heat-conducting copper busbar is required to conduct heat and dissipate heat at different locations, the distance between the heat absorption location and the heat dissipation location is relatively large. Therefore, the heat conduction and cooling efficiency of the copper busbar alone is low, which affects the heat dissipation efficiency inside the frequency converter. Utility Model Content

[0005] To address the problems in the existing technology, this utility model provides a high-sealing vector inverter.

[0006] The technical solution adopted by this utility model to solve its technical problem is a high-sealing vector inverter, including an inverter housing, a water storage tank, and a heat-conducting copper busbar. The heat-conducting copper busbar is bonded and fixed to the inner wall of the inverter housing. A liquid flow channel is opened inside the heat-conducting copper busbar. A water inlet pipe is threaded to the upper end of the outer wall of the heat-conducting copper busbar, and a return pipe is threaded to the lower end of the outer wall of the heat-conducting copper busbar. A water storage tank is screwed to one side of the lower end of the outer wall of the inverter housing. A sealing cover plate is screwed to the outer wall of the water storage tank. A linkage shaft is set inside the sealing cover plate, and a cooling fan is set on the outside of the water storage tank.

[0007] By adopting the above technical solution, the position of the heat-conducting copper busbar inside the inverter housing corresponds to the position of the electrical components that need heat dissipation, and the heat-conducting copper busbar is in contact with the electrical components. Temperature can be transferred through the heat-conducting copper busbar. The return pipe, inlet pipe, water tank, and sealing cover are made of the same material as the heat-conducting copper busbar, thus allowing the return pipe, inlet pipe, water tank, and sealing cover to transfer the temperature of the heat-conducting copper busbar to the heat dissipation fins for heat dissipation. Active heat dissipation is then achieved through the cooling fan, ensuring heat dissipation efficiency. When the cooling fan rotates, it carries the linkage shaft and impeller. The synchronous rotation drives the flow of the heat transfer medium inside the water tank via the impeller. The heat transfer medium flows into the liquid channel through the inlet pipe and then returns to the water tank through the return pipe, ensuring the circulation of the heat transfer medium in the liquid channel. The flow of the heat transfer medium can transport the temperature of the heat transfer copper busbar, assisting the heat transfer copper busbar to the heat dissipation fins, thereby improving the temperature transfer speed inside the inverter housing. This improves the cooling efficiency inside the inverter housing, protects the temperature inside the inverter housing, and achieves the purpose of protecting the electrical components.

[0008] Specifically, the inverter housing has through holes on both sides of the outer wall. The water inlet pipe and the return pipe are located inside the through holes. A sealing ring is bonded and fixed to the inner wall of the through hole, and the outer wall of the water inlet pipe and the return pipe is in contact with the inner ring of the sealing ring.

[0009] By adopting the above technical solution, the through hole provides installation space for the water inlet pipe and the return pipe, ensuring that the liquid flow channel inside the heat-conducting copper busbar can be connected to the inside of the water tank. The sealing ring ensures the sealing of the water inlet pipe and the return pipe located inside the through hole, ensuring the sealing of the inside of the inverter housing and ensuring the high sealing performance of the inverter housing.

[0010] Specifically, the inner wall of the sealing cover is interference-fitted with a bearing, the linkage shaft is interference-fitted with the inner ring of the bearing, and the linkage shaft is rotatably connected to the sealing cover through the bearing.

[0011] By adopting the above technical solution, the bearing supports the position of the linkage shaft, ensuring the smooth rotation of the linkage shaft inside the sealing cover. In addition, the operator can ensure the sealing between the linkage shaft and the sealing cover through the external O-ring seal, ensuring the sealing between the linkage shaft and the water tank and preventing liquid leakage.

[0012] Specifically, the cooling fan is screwed to the outer wall of the water storage tank, and the output end of the cooling fan is pinned to the linkage shaft.

[0013] By adopting the above technical solution, the cooling fan is positioned stably on the outside of the water tank by screws, and the cooling fan directly drives the linkage shaft, which can drive the linkage shaft and impeller to rotate simultaneously when the fan wheel of the cooling fan rotates, thus driving the flow of the heat transfer medium inside the water tank.

[0014] Specifically, the outer wall of the water storage tank is welded with equally spaced parallel heat dissipation fins, which are located between the water storage tank and the heat dissipation fan, and the heat dissipation fins do not contact the heat dissipation fan.

[0015] By adopting the above technical solution, the heat dissipation fins on the outer wall of the water storage tank increase the contact area with the air. Combined with the airflow of the cooling fan, this can accelerate the dissipation of heat from the heat-conducting medium inside the water storage tank and the heat dissipation from the heat-conducting copper busbar.

[0016] Specifically, pipe joints are provided on both outer walls of the water storage tank, and the inlet pipe and return pipe are respectively connected to the pipe joints. Both the inlet pipe and the return pipe are connected to the inside of the water storage tank through the pipe joints.

[0017] By adopting the above technical solution, the inlet pipe and return pipe can be connected to the water tank at the pipeline joint. The inlet pipe and return pipe ensure the connection and sealing between the water tank and the liquid flow channel, ensuring that the heat transfer medium can circulate in the water tank and the liquid flow channel. The heat transfer medium achieves the purpose of assisting heat transfer, which can improve the heat transfer efficiency and heat dissipation efficiency.

[0018] Specifically, an impeller is connected to one side of the outer wall of the linkage shaft by a pin, and the impeller is located inside the water storage shell.

[0019] By adopting the above technical solution, the linkage shaft drives the impeller to rotate inside the water storage tank, which can transport the heat transfer medium inside the water storage tank, so that the heat transfer medium flows into the liquid flow channel through the water inlet pipe.

[0020] The beneficial effects of this utility model are: The high-sealing vector inverter described in this utility model features a heat-conducting medium that circulates within a liquid channel. This flow of the heat-conducting medium transfers the temperature of the heat-conducting copper busbar, assisting in the heat transfer of the copper busbar to the heat dissipation fins. This increases the speed of temperature transfer to the inside of the inverter housing, thereby improving the cooling efficiency of the inverter housing and ensuring the temperature inside the inverter housing. This achieves the purpose of protecting the electrical components.

[0021] The high-sealing vector inverter described in this utility model has a return pipe, an inlet pipe, a water tank, and a sealing cover plate that can transfer the temperature of the heat-conducting copper busbar to the heat dissipation fins for heat dissipation, and actively dissipate heat through a cooling fan, thus ensuring heat dissipation efficiency. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the inverter housing structure of this utility model; Figure 2 This is a schematic diagram showing the disassembled structure of the inverter body of this utility model; Figure 3 This is a cross-sectional schematic diagram of the heat-conducting copper busbar structure of this utility model; Figure 4 This is an exploded view of the water storage shell structure of this utility model; Figure 5 This is a schematic diagram showing the disassembled structure of the water storage shell of this utility model.

[0024] In the diagram: 1. Inverter housing; 11. Water inlet pipe; 12. Return pipe; 13. Heat-conducting copper busbar; 14. Liquid flow channel; 2. Water storage tank; 21. Sealing cover plate; 22. Linkage shaft; 23. Impeller; 24. Pipe joint; 25. Heat dissipation fins; 26. Cooling fan. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] To save manpower and improve efficiency, as one embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the high-sealing vector inverter of this utility model includes an inverter housing 1, a water storage tank 2, and a heat-conducting copper busbar 13. The heat-conducting copper busbar 13 is bonded and fixed to the inner wall of the inverter housing 1. A liquid flow channel 14 is opened inside the heat-conducting copper busbar 13. A water inlet pipe 11 is threaded to the upper end of the outer wall of the heat-conducting copper busbar 13, and a return pipe 12 is threaded to the lower end of the outer wall of the heat-conducting copper busbar 13. The water storage tank 2 is screwed to one side of the lower end of the outer wall of the inverter housing 1. A sealing cover plate 21 is screwed to the outer wall of the water storage tank 2. A linkage shaft 22 is provided inside the sealing cover plate 21, and a cooling fan 26 is provided on the outside of the water storage tank 2.

[0027] In use, the position of the heat-conducting copper busbar 13 inside the inverter housing 1 corresponds to the position of the electrical components that need heat dissipation, and the heat-conducting copper busbar 13 is in contact with the electrical components. Temperature can be transferred through the heat-conducting copper busbar 13. The materials of the return pipe 12, inlet pipe 11, water tank 2, and sealing cover 21 are the same as those of the heat-conducting copper busbar 13. Therefore, the return pipe 12, inlet pipe 11, water tank 2, and sealing cover 21 can transfer the temperature of the heat-conducting copper busbar 13 to the heat dissipation fins 25 for heat dissipation, and active heat dissipation is achieved through the cooling fan 26, ensuring heat dissipation efficiency. When the cooling fan 26 rotates, it carries the linkage shaft 22 and... The impeller 23 rotates synchronously, thereby driving the flow of the heat transfer medium inside the water storage tank 2. The heat transfer medium flows into the liquid flow channel 14 through the water inlet pipe 11, and then flows back to the water storage tank 2 through the return pipe 12, ensuring the circulation of the heat transfer medium in the liquid flow channel 14. The flow of the heat transfer medium can transport the temperature of the heat transfer copper busbar 13, assisting the heat transfer copper busbar 13 to the heat dissipation fins 25, which can improve the temperature transfer speed inside the inverter housing 1, thereby improving the cooling efficiency inside the inverter housing 1, ensuring the temperature inside the inverter housing 1, and achieving the purpose of protecting the electrical components.

[0028] For sealing purposes, exemplarily, such as Figure 2 As shown, through holes are provided on both sides of the outer wall of the inverter housing 1. The water inlet pipe 11 and the return pipe 12 are located inside the through holes. A sealing ring is bonded and fixed to the inner wall of the through hole, and the outer wall of the water inlet pipe 11 and the return pipe 12 are in contact with the inner ring of the sealing ring.

[0029] During use, the through hole provides installation space for the water inlet pipe 11 and the return pipe 12, ensuring that the liquid flow channel 14 inside the heat-conducting copper busbar 13 can be connected to the inside of the water storage tank 2. The sealing ring ensures the sealing of the water inlet pipe 11 and the return pipe 12 located inside the through hole, ensuring the sealing of the inside of the inverter housing 1 and ensuring the high sealing performance of the inverter housing 1.

[0030] For synchronized rotation, for example, such as Figure 4As shown, a bearing is interference-fitted to the inner wall of the sealing cover plate 21, and the linkage shaft 22 is interference-fitted to the inner ring of the bearing. The linkage shaft 22 is rotatably connected to the sealing cover plate 21 through the bearing.

[0031] During use, the bearing supports the position of the linkage shaft 22, ensuring the smooth rotation of the linkage shaft 22 inside the sealing cover plate 21. The operator can also ensure the sealing between the linkage shaft 22 and the sealing cover plate 21 through the external O-ring seal, ensuring the sealing between the linkage shaft 22 and the water tank 2, and preventing liquid leakage.

[0032] For heat dissipation, for example, such as Figure 4 As shown, the cooling fan 26 is screwed to the outer wall of the water storage shell 2, and the output end of the cooling fan 26 is pinned to the linkage shaft 22.

[0033] During use, the cooling fan 26 is secured by screws to ensure a stable position on the outside of the water storage tank 2. The cooling fan 26 directly drives the linkage shaft 22, which can simultaneously drive the linkage shaft 22 and the impeller 23 to rotate when the fan wheel of the cooling fan 26 rotates, thereby driving the flow of the heat transfer medium inside the water storage tank 2.

[0034] For heat dissipation, for example, such as Figure 4 As shown, the outer wall of the water storage shell 2 is welded with equally spaced parallel heat dissipation fins 25. The heat dissipation fins 25 are located between the water storage shell 2 and the heat dissipation fan 26, and the heat dissipation fins 25 do not contact the heat dissipation fan 26.

[0035] When in use, the heat dissipation fins 25 on the outer wall of the water storage tank 2 increase the contact area with the air. Combined with the airflow from the heat dissipation fan 26, it can accelerate the dissipation of heat from the heat-conducting medium inside the water storage tank 2 and the heat dissipation from the heat-conducting copper busbar 13.

[0036] To control the flow trajectory of the heat transfer medium, for example, such as Figure 5 As shown, pipe joints 24 are provided on both outer walls of the water storage tank 2. The inlet pipe 11 and the return pipe 12 are respectively connected to the pipe joints 24, and the inlet pipe 11 and the return pipe 12 are connected to the inside of the water storage tank 2 through the pipe joints 24.

[0037] During use, the inlet pipe 11 and return pipe 12 of the pipe joint 24 can be connected to the water storage tank 2, and the connection and sealing between the water storage tank 2 and the liquid flow channel 14 are ensured through the inlet pipe 11 and return pipe 12, so that the heat transfer medium can circulate in the water storage tank 2 and the liquid flow channel 14. The heat transfer medium achieves the purpose of assisting heat transfer and can improve the heat transfer efficiency and heat dissipation efficiency.

[0038] To drive the flow of the heat-conducting medium, for example, such as Figure 5As shown, an impeller 23 is connected to one side of the outer wall of the linkage shaft 22 by a pin, and the impeller 23 is located inside the water storage shell 2.

[0039] In use, the linkage shaft 22 drives the impeller 23 to rotate inside the water storage tank 2, which can transport the heat transfer medium inside the water storage tank 2, so that the heat transfer medium flows through the water inlet pipe 11 into the liquid flow channel 14.

[0040] When this utility model is in use, the internal electrical components generate heat during the operation of the frequency converter. Since the heat-conducting copper busbar 13 corresponds to and is in direct contact with the electrical components that need to be dissipated, the heat is quickly conducted to the heat-conducting copper busbar 13. When the cooling fan 26 starts to run, its output end drives the linkage shaft 22 to rotate through the pin shaft. The linkage shaft 22 then drives the impeller 23 located in the water storage tank 2 to rotate. The impeller 23 stirs the heat transfer medium in the water storage tank 2, so that it flows into the liquid flow channel 14 of the heat transfer copper busbar 13 through the water inlet pipe 11, and then returns to the water storage tank 2 through the return pipe 12, forming a circulation flow. The circulating heat transfer medium continuously absorbs the heat from the heat transfer copper busbar 13 in the liquid flow channel 14, carrying the heat out of the inverter housing 1. Since the return pipe 12, the inlet pipe 11, the water tank 2 and the sealing cover 21 are made of the same material as the heat transfer copper busbar 13 and have good thermal conductivity, the heat can be quickly transferred to the water tank 2 and the heat dissipation fins 25. The airflow from the cooling fan 26 blows through the cooling fins 25, accelerating the removal of heat transferred from the water tank 2 and the heat-conducting copper busbar 13.

[0041] It should be noted that this utility model is a high-sealing vector inverter. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-sealing vector inverter, characterized in that, The device includes a frequency converter housing (1), a water storage tank (2), and a heat-conducting copper busbar (13). The heat-conducting copper busbar (13) is bonded and fixed to the inner wall of the frequency converter housing (1). A liquid flow channel (14) is opened inside the heat-conducting copper busbar (13). A water inlet pipe (11) is threaded to the upper end of the outer wall of the heat-conducting copper busbar (13). A return pipe (12) is threaded to the lower end of the outer wall of the heat-conducting copper busbar (13). A water storage tank (2) is screwed to one side of the lower end of the outer wall of the frequency converter housing (1). A sealing cover plate (21) is screwed to the outer wall of the water storage tank (2). A linkage shaft (22) is provided inside the sealing cover plate (21). A cooling fan (26) is provided on the outside of the water storage tank (2).

2. The high-sealing vector inverter according to claim 1, characterized in that, The inverter housing (1) has through holes on both sides of its outer wall. The water inlet pipe (11) and return pipe (12) are located inside the through holes. A sealing ring is bonded to the inner wall of the through hole, and the outer wall of the water inlet pipe (11) and return pipe (12) is in contact with the inner ring of the sealing ring.

3. The high-sealing vector inverter according to claim 1, characterized in that, The inner wall of the sealing cover plate (21) is fitted with a bearing, and the linkage shaft (22) is fitted with the inner ring of the bearing. The linkage shaft (22) is rotatably connected to the sealing cover plate (21) through the bearing.

4. A high-sealing vector inverter according to claim 1, characterized in that, The cooling fan (26) is screwed to the outer wall of the water storage shell (2), and the output end of the cooling fan (26) is pin-connected to the linkage shaft (22).

5. A high-sealing vector inverter according to claim 1, characterized in that, The outer wall of the water storage shell (2) is welded with equally spaced parallel heat dissipation fins (25). The heat dissipation fins (25) are located between the water storage shell (2) and the heat dissipation fan (26), and the heat dissipation fins (25) do not contact the heat dissipation fan (26).

6. A high-sealing vector inverter according to claim 1, characterized in that, Both sides of the water storage shell (2) are provided with pipe joints (24). The water inlet pipe (11) and the return pipe (12) are respectively connected to the pipe joints (24), and the water inlet pipe (11) and the return pipe (12) are connected to the inside of the water storage shell (2) through the pipe joints (24).

7. A high-sealing vector inverter according to claim 1, characterized in that, The impeller (23) is connected to one side of the outer wall of the linkage shaft (22) by a pin, and the impeller (23) is located inside the water storage shell (2).

Images