A frequency converter heat sink

Abstract

The present invention belongs to the field of radiators, and specifically is a frequency converter radiator, comprising a frequency converter body, an external heat dissipation elbow arranged on the back of the frequency converter body, an external heat conduction plate arranged at the rear end of the external heat dissipation elbow, heat dissipation fins arranged on both sides of the rear end of the external heat conduction plate, a built-in heat conduction plate arranged inside the frequency converter body, and a built-in heat conduction elbow arranged at the rear end of the built-in heat conduction plate. The present invention can reduce the load of the fan through fan-assisted water cooling heat dissipation, thereby reducing the noise level. The pump and water flow sounds in the water cooling system are relatively small, which can provide a quieter working environment. In addition, by utilizing the water cooling heat dissipation system, the volume and weight of the air-cooled radiator can be reduced, making the entire system more compact and saving space. At the same time, compared with using only air cooling heat dissipation, the cost of maintaining the water cooling system is relatively low, and the water cooling system does not require regular replacement of the fan, thereby reducing maintenance work and maintenance costs.

Description

Technical Field

[0001] The invention belongs to the field of radiators, in particular to a frequency converter radiator. Background Art

[0002] The inverter controls the power control equipment of the AC motor by changing the frequency of the motor's working power supply. In the inverter, the rectifier bridge, inverter single tube and capacitor are the main heat-generating components. Based on the current structural design, the rectifier bridge, inverter single tube and capacitor are installed relatively concentratedly in the inverter, which makes it easy for heat to accumulate and the heat quickly reaches the heat dissipation threshold. In order to solve the corresponding heat dissipation problem, the current inverter mostly uses fans for forced air cooling.

[0003] The prior art also proposes some solutions, such as a patent application with publication number CN106385788A that discloses a frequency converter heat sink, including a body, a cold air device installed at the air inlet, a cold air device controller, a heat sink, a deflector, an axial fan, and a temperature sensor installed on the frequency converter heating component. This solution uses the cold air device controller to automatically start the cold air device to cool the air entering the frequency converter, which has a better heat dissipation effect on the large amount of heat inside the frequency converter.

[0004] Although the above technical solution uses cold air to dissipate heat from the inverter, the air-cooled cooling method results in high noise. In addition, in order to ensure the speed of air circulation, a larger fan is selected, resulting in a larger radiator footprint. In addition, the fan is a particularly critical heat dissipation component and needs to be maintained regularly to ensure the heat dissipation effect.

[0005] To this end, the present invention provides a frequency converter heat sink. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the inverter radiator described in the present invention includes an inverter body, an external heat dissipation elbow pipe arranged on the back of the inverter body, an external heat conduction plate arranged at the rear end of the external heat dissipation elbow pipe, heat dissipation fins arranged on both sides of the rear end of the external heat conduction plate, an internal heat conduction plate arranged inside the inverter body, and an internal heat conduction elbow pipe arranged at the rear end of the internal heat conduction plate, a circulating water pump is installed at the output end of the top of one side of the external heat dissipation elbow pipe, and the circulating water pump is installed on the back of the inverter body. The input end is connected to the output end at the top of one side of the external heat dissipation elbow, and the output end on the other side of the circulating water pump is connected to a liquid injection pipe, one end of which extends from the outer wall of the inverter body to the inside thereof, and is connected to the input end at the top of one side of the built-in heat conduction elbow. The input end at the bottom of one side of the external heat dissipation elbow is installed with a liquid outlet pipe, one end of which extends from the outer wall of the inverter body to the inside thereof, and is connected to the output end at the bottom of one side of the built-in heat conduction elbow. A cooling fan is also installed on the back of the inverter body, and the cooling fan cover is covered on the cooling fins.

[0008] A turntable is arranged at the middle position of the rear end of the external heat conducting plate, and a push assembly is arranged on both sides of the turntable, and the push assembly includes a push plate, and the push plates are arranged on both sides of the turntable and located on one side of the heat dissipation fin, and a driven push rod is hinged at the middle position of one side of the push plate, and an active push rod is hinged at one end of the driven push rod, and two groups of active push rods are respectively fixed at the upper and lower ends of the turntable;

[0009] The upper and lower ends of the push plate are provided with winding assemblies, and the winding assemblies include racks, which are fixed to the upper and lower ends of the push plate, and the racks are placed inside the supporting cross bar and can slide laterally inside the supporting cross bar, and the supporting cross bar is fixed to the external heat conducting plate, and the bottom of the rack is meshed with a driven gear, and a roller is fixed to one end of the driven gear, and the driven gear and the roller are both rotatably arranged inside the supporting cross bar, and a winding rope is fixed on the roller, and the winding rope extends from the inside of the supporting cross bar, and its ends are fixedly connected to the two outermost groups of heat dissipation fins at the rear end of the external heat conducting plate;

[0010] A driving assembly is provided at the rear end of the turntable, and the driving assembly includes a torsion block, which is fixed to the rear end of the turntable, a shift block is provided at the bottom of the torsion block, and the shift block is installed on an external heat conduction plate, a first gear is fixed to the rear end of the shift block, and a second gear is meshed with the top of the first gear, a connecting column is fixed at the middle position of the front end of the fan head of the cooling fan, a rotating block is fixed to the front end of the connecting column, and the second gear is rotatably arranged outside the rotating block.

[0011] Preferably, two groups of heat dissipation fins close to the push plate are fixed on the external heat conduction plate, and the heat dissipation fins away from the push plate can move laterally on the external heat conduction plate.

[0012] Preferably, a connecting component is provided between two adjacent groups of heat dissipating fins, and the connecting component includes a connecting spring, which is fixed between the two adjacent groups of heat dissipating fins. Connecting ropes are provided at both upper and lower ends between the two adjacent groups of heat dissipating fins, and the connecting ropes are used to connect the heat dissipating fins.

[0013] Preferably, the driving assembly also includes a built-in groove, which is opened on the outer wall of the rotating block. A connecting pin is arranged inside the built-in groove, a return spring is fixed to the end of the connecting pin, and the return spring is fixed to the bottom of the built-in groove. A connecting hole is opened on the inner wall of the second gear.

[0014] Preferably, the number of the built-in grooves and the connection holes are the same, and their positions correspond.

[0015] Preferably, the outer diameter of the connecting pin matches the inner diameter of the built-in groove, and the outer diameter of the connecting pin matches the inner diameter of the connecting hole.

[0016] Preferably, two groups of push plates are provided, and the two groups of push plates are symmetrical on both sides of the center line of the turntable.

[0017] Preferably, four groups of racks are provided, and a group of racks is provided at the upper and lower ends of each group of push plates.

[0018] Preferably, a torsion assembly is provided inside the turntable, and the torsion assembly includes a connecting cavity, which is opened inside the turntable, and a connecting disk is provided inside the connecting cavity, and an end of the connecting disk is fixed on an external heat conduction plate, and a torsion spring is provided outside the connecting disk, and the inner end of the torsion spring is fixedly connected to the connecting disk, and the outer end of the torsion spring is fixedly connected to the inner wall of the connecting cavity.

[0019] Preferably, the inner diameter of the connecting cavity matches the outer diameter of the connecting disk, and the rotating disk rotates outside the connecting disk through the connecting cavity.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The inverter radiator described in the present invention injects a sufficient amount of water-cooling liquid into the interior of the built-in heat-conducting curved pipe and the external heat-dissipating curved pipe. When the inverter body is working, the circulating water pump and the cooling fan are started. Under the action of the circulating water pump, the water-cooling liquid in the built-in heat-conducting curved pipe and the external heat-dissipating curved pipe circulates, and the built-in heat-conducting plate placed in the inverter body contacts the PCB board inside it, and the heat generated by the operation of each component on the PCB board is extracted and absorbed by the water-cooling liquid flowing through the built-in heat-conducting curved pipe. The water-cooling liquid that absorbs the heat enters the external heat-dissipating curved pipe, cooperates with the external heat-conducting plate to extract the heat in the water-cooling liquid in the external heat-dissipating curved pipe, and the heat absorbed is released by the heat dissipating fins. Dissipated into the air, the cooled water-cooling liquid circulates again and flows into the built-in thermal bending pipe to absorb heat, thus completing the water-cooling of the inverter body. Compared with the pure air-cooling method, the water-cooling method assisted by the fan can reduce the load of the fan, thereby reducing the noise level. The pump and water flow in the water-cooling system are relatively quiet, which can provide a quieter working environment. In addition, the use of the water-cooling system can reduce the size and weight of the air-cooled radiator, making the entire system more compact and saving space. At the same time, compared with the use of only air-cooling, the cost of maintaining the water-cooling system is relatively low, and the water-cooling system does not require regular replacement of the fan, reducing maintenance work and maintenance costs.

[0022] When the gear shifts, the gears on both sides are rotated, and the gears on both sides are rotated, so that the gears on both sides are rotated, and the gears on both sides are rotated, and the gears on both sides are rotated. The spacing between the fins is enlarged. By increasing the spacing between the heat dissipation fins, the heat dissipation surface area can be effectively increased and the heat dissipation efficiency can be improved. A larger heat dissipation surface area can transfer heat to the surrounding air or cooling medium faster, accelerating the dissipation of heat. In addition, by increasing the spacing between the heat dissipation fins, the flow of air or cooling medium between the heat dissipation fins will be smoother, reducing the resistance to fluid flow, and helping to improve the heat dissipation efficiency. A larger fin spacing can reduce the resistance of air on the radiator surface, reduce the noise level generated when air flows, and provide a quieter working environment. Flexible adjustments can be made according to actual heat dissipation needs. When the temperature is high, increasing the spacing between the heat dissipation fins can improve the heat dissipation efficiency. When the temperature is low, reducing the spacing between the heat dissipation fins to reduce the heat dissipation area and avoid excessive heat dissipation. Accurately adjusting the fin spacing can better match the heat dissipation requirements of the inverter, optimize the heat dissipation performance, and ensure that the equipment operates stably within a safe temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is the overall structural diagram of the present invention;

[0025] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0026] Figure 3 It is a partial split structure diagram in the present invention;

[0027] Figure 4 It is a structural diagram of the extension component in the present invention;

[0028] Figure 5 It is a partial structural diagram of the winding assembly in the present invention;

[0029] Figure 6 It is a structural diagram of the driving component in the present invention;

[0030] Figure 7 It is a partial structural cross-sectional view of the driving assembly in the present invention;

[0031] Figure 8 is a cross-sectional view of the torsion assembly structure in the present invention;

[0032] Fig. 9 is a structural diagram of a connection assembly in the present invention;

[0033] Fig.10 It is a structural diagram of the heat dissipation fan in the present invention;

[0034] In the figure: 1. Inverter body; 2. Circulating water pump; 3. Liquid injection pipe; 4. Liquid outlet pipe; 5. External heat dissipation elbow; 6. Cooling fan; 7. Internal heat conduction plate; 8. Internal heat conduction elbow; 9. External heat conduction plate; 10. Heat dissipation fins; 11. Support bar; 12. Turntable; 13. Pushing assembly; 131. Active push rod; 132. Driven push rod; 133. Push plate; 14. Winding assembly; 141. Rack; 142. Driven gear; 143. Roller; 144, winding rope; 15, driving assembly; 151, torsion block; 152, shift block; 153, first gear; 154, second gear; 155, connecting column; 156, rotating block; 157, built-in groove; 158, connecting pin; 159, reset spring; 1510, connecting hole; 16, torsion assembly; 161, connecting cavity; 162, connecting disk; 163, torsion spring; 17, connecting assembly; 171, connecting spring; 172, connecting rope. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figures 1 to 10As shown, an embodiment of the present invention provides a frequency converter radiator, comprising an external heat dissipation elbow 5 arranged on the back of the frequency converter body 1, an external heat conduction plate 9 arranged at the rear end of the external heat dissipation elbow 5, heat dissipation fins 10 arranged on both sides of the rear end of the external heat conduction plate 9, a built-in heat conduction plate 7 arranged inside the frequency converter body 1, and a built-in heat conduction elbow 8 arranged at the rear end of the built-in heat conduction plate 7, a circulating water pump 2 is installed at the output end of the top of one side of the external heat dissipation elbow 5, the circulating water pump 2 is installed on the back of the frequency converter body 1, the input end of one side of the circulating water pump 2 is connected to the output end of the top of one side of the external heat dissipation elbow 5, and the output end of the other side of the circulating water pump 2 is connected to the injection pipe 3, one end of the injection pipe 3 is connected to the outer side of the frequency converter body 1 The wall extends to the interior thereof and is connected to the input end at the top of one side of the built-in heat-conducting curved pipe 8. The input end at the bottom of one side of the external heat-dissipating curved pipe 5 is installed with a liquid outlet pipe 4. One end of the liquid outlet pipe 4 extends from the outer wall of the inverter body 1 to the interior thereof and is connected to the output end at the bottom of one side of the built-in heat-conducting curved pipe 8. A cooling fan 6 is also installed on the back of the inverter body 1. The cooling fan 6 covers the cooling fins 10. A turntable 12 is provided at the middle position of the rear end of the external heat-conducting plate 9. Both sides of the turntable 12 are provided with a pushing assembly 13. The pushing assembly 13 includes a push plate 133. The push plates 133 are arranged on both sides of the turntable 12 and are located on one side of the heat-dissipating fin 10. The push plate 133 is hinged at the middle position of one side with a push plate 133. The active push rod 132 is hinged at one end of the driven push rod 132 with an active push rod 131, and the two sets of active push rods 131 are respectively fixed on the turntable 12; the upper and lower ends of the push plate 133 are provided with a winding assembly 14, and the winding assembly 14 includes a rack 141, and the rack 141 is fixed to the upper and lower ends of the push plate 133, and the rack 141 is placed inside the support cross bar 11 and can slide laterally in the support cross bar 11, and the support cross bar 11 is fixed on the external heat conducting plate 9, and the bottom of the rack 141 is meshed with a driven gear 142, and a winding roller 143 is fixed at one end of the driven gear 142, and the driven gear 142 and the winding roller 143 are both rotatably arranged inside the support cross bar 11, and a winding rope 14 is fixed on the winding roller 143 4. The winding rope 144 extends out from the inside of the supporting horizontal bar 11, and its end is fixedly connected to the two outermost groups of heat dissipation fins 10 at the rear end of the external heat conduction plate 9; a driving assembly 15 is provided at the rear end of the turntable 12, and the driving assembly 15 includes a twist block 151, which is fixed to the rear end of the turntable 12, and a shift block 152 is provided at the bottom of the twist block 151, and the shift block 152 is installed on the external heat conduction plate 9, and a first gear 153 is fixed to the rear end of the shift block 152, and a second gear 154 is meshed with the top of the first gear 153, and a connecting column 155 is fixed at the middle position of the front end of the fan head of the heat dissipation fan 6, and a rotating block 156 is fixed to the front end of the connecting column 155, and the second gear 154 is rotatably arranged on the outside of the rotating block 156.

[0037] First, a sufficient amount of water-cooling liquid is injected into the built-in heat-conducting curved pipe 8 and the external heat-dissipating curved pipe 5. When the inverter body 1 is working, the circulating water pump 2 and the cooling fan 6 are started. Under the action of the circulating water pump 2, the water-cooling liquid in the built-in heat-conducting curved pipe 8 and the external heat-dissipating curved pipe 5 circulates. The water-cooling liquid flows from the injection pipe 3 into the built-in heat-conducting curved pipe 8, and then flows from the built-in heat-conducting curved pipe 8 into the liquid outlet pipe 4, and then flows from the liquid outlet pipe 4 into the external heat-dissipating curved pipe 5, and then flows from the external heat-dissipating curved pipe 5 into the injection pipe 3, thereby forming a cycle. The built-in heat-conducting plate 7 placed inside the inverter body 1 contacts the PCB board inside it, and the heat generated by the operation of each component on the PCB board is extracted and absorbed by the water-cooling liquid flowing through the built-in heat-conducting curved pipe 8. The water-cooling liquid that absorbs the heat enters the external heat-dissipating curved pipe 5, and cooperates with the external The heat conducting plate 9 is arranged to conduct heat from the water-cooling liquid in the external heat dissipation elbow 5, and the heat dissipation fins 10 dissipate the absorbed heat into the air. The cooled water-cooling liquid circulates again into the built-in heat conducting elbow 8 to absorb heat, so that the water-cooling heat dissipation of the inverter body 1 can be completed. Compared with the simple air-cooling heat dissipation method, the water-cooling heat dissipation using fan-assisted water-cooling heat dissipation can reduce the load of the fan, thereby reducing the noise level. The pump and water flow in the water cooling system are relatively quiet, which can provide a quieter working environment. In addition, the use of the water-cooling heat dissipation system can reduce the volume and weight of the air-cooling radiator, making the entire system more compact and saving space. At the same time, compared with the use of only air-cooling heat dissipation, the cost of maintaining the water cooling system is relatively low. The water cooling system does not need to replace the fan regularly, which reduces maintenance work and maintenance costs.

[0038] When the inverter body 1 is at a normal temperature, the cooling fan 6 rotates at a low speed, and the cooling fan 6 drives the rotating block 156 to rotate in the second gear 154 through the connecting column 155. At this time, the second gear 154 does not rotate with the rotating block 156. When the temperature of the inverter body 1 is too high, the speed of the cooling fan 6 increases, the rotating block 156 is connected to the second gear 154, the cooling fan 6 drives the rotating block 156 to rotate, and drives the second gear 154 to rotate with it, the second gear 154 drives the meshed first gear 153 to rotate, the first gear 153 drives the shifting block 152 to rotate, and the rotating shifting block 152 The three wings on the outside of the torsion block 151 are used to continuously move the wings at the bottom of the torsion block 151 to make it rotate and be at an inclined angle. When the torsion block 151 rotates, it will drive the active push rods 131 at the upper and lower ends of the turntable 12 fixedly connected thereto to tilt, and the active push rods 131 will push the driven push rods 132 to move, and the driven push rods 132 will push the push plates 133 to move toward the positions of the heat dissipation fins 10 on both sides of the rear end of the external heat conduction plate 9. When the push plates 133 move, they will drive the racks 141 at the upper and lower ends thereof to move, and the moving racks 141 will drive the driven gears 142 meshing therewith to rotate, and the driven gears 14 2 drives the roller 143 to rotate accordingly. The rotating roller 143 applies a pulling force to the heat dissipation fins 10 by winding the winding rope 144, so as to pull the heat dissipation fins 10 to make them unfold to both sides. When the heat dissipation fins 10 are unfolded, the spacing between adjacent heat dissipation fins 10 is enlarged. By increasing the spacing between the heat dissipation fins 10, the heat dissipation surface area can be effectively increased, and the heat dissipation efficiency can be improved. The larger heat dissipation surface area can make the heat transfer to the surrounding air or cooling medium faster, and accelerate the heat dissipation. In addition, by increasing the spacing between the heat dissipation fins 10, the flow of air or cooling medium between the heat dissipation fins 10 will be faster. Smoother, reducing the resistance to fluid flow, helping to improve heat dissipation efficiency, larger fin spacing can reduce the resistance of air on the radiator surface, reduce the noise level generated by air flow, and provide a quieter working environment. Flexible adjustment can be made according to actual heat dissipation needs. When the temperature is high, increasing the spacing between the heat dissipation fins 10 can improve the heat dissipation efficiency, and when the temperature is low, reducing the spacing between the heat dissipation fins 10 to reduce the heat dissipation area and avoid excessive heat dissipation. Accurately adjusting the fin spacing can better match the heat dissipation needs of the inverter, optimize the heat dissipation performance, and ensure that the equipment runs stably within a safe temperature range.

[0039] like Figure 4 and Figure 6As shown, two groups of heat dissipation fins 10 close to the push plate 133 are fixed on the external heat conducting plate 9, and the heat dissipation fins 10 far away from the push plate 133 can move laterally on the external heat conducting plate 9. The two groups of heat dissipation fins 10 close to the push plate 133 are fixedly connected to the external heat conducting plate 9, and other heat dissipation fins 10 can move on the external heat conducting plate 9. When the heat dissipation fins 10 are pulled, the heat dissipation fins 10 farthest from the push plate 133 will be pulled first, and the heat dissipation fins 10 close to the push plate 133 will be pulled last. The fixation of the heat dissipation fins 10 close to the push plate 133 ensures that the pulling force can be effectively transmitted to each heat dissipation fin 10, so that it can be stably pulled and unfolded.

[0040] like Fig. 9 As shown, a connecting component 17 is provided between two adjacent groups of heat sinks 10 , and the connecting component 17 includes a connecting spring 171 , and the connecting spring 171 is fixed between the two adjacent groups of heat sinks 10 , and connecting ropes 172 are provided at both upper and lower ends between the two adjacent groups of heat sinks 10 , and the connecting ropes 172 are used to connect the heat sinks 10 .

[0041] Adjacent heat sinks 10 are connected by connecting ropes 172, and connecting springs 171 are provided between adjacent heat sinks 10. When the heat sink fins 10 are not pulled, the connecting ropes 172 between adjacent heat sinks 10 are in a relaxed state, and the connecting springs 171 remain in their original state. When the heat sink fins 10 are pulled, tension is transmitted between each heat sink fin 10 through the connecting ropes 172, and when the connecting ropes 172 between each adjacent heat sink fin 10 are stretched, each heat sink fin 10 is expanded. At this time, the spacing between multiple groups of heat sink fins 10 is enlarged, and the connecting springs 171 are in an extended state. When no tension is applied to the heat sink fins 10, the elastic force of the connecting springs 171 is used to pull each heat sink fin 10 to contract and return to a state of small spacing.

[0042] like Figure 6 , Figure 7 and Fig.10 As shown, the driving assembly 15 also includes a built-in groove 157, which is opened on the outer wall of the rotating block 156. A connecting pin 158 is arranged inside the built-in groove 157. A return spring 159 is fixed to the end of the connecting pin 158. The return spring 159 is fixed to the bottom of the built-in groove 157. A connecting hole 1510 is opened on the inner wall of the second gear 154. The number of the built-in grooves 157 and the connecting holes 1510 are the same, and the positions are corresponding.

[0043] When the cooling fan 6 is in a low speed state, the connecting pin 158 in the built-in groove 157 on the outer wall of the rotating block 156 is retracted into the built-in groove 157. When the cooling fan 6 changes from a low speed to a high speed, under the action of centrifugal force, the connecting pin 158 is thrown from the built-in groove 157 into the connecting hole 1510 on the inner wall of the second gear 154. At the same time, the return spring 159 at the tail of the connecting pin 158 is extended by the tensile force. Under the action of the connecting pin 158, the rotating block 156 is connected to the second gear 154. Therefore, the rotation of the cooling fan 6 will drive the rotating block 156 and the second gear 154 to rotate accordingly. When the speed of the cooling fan 6 changes from high speed to low speed again, the centrifugal force is reduced and the connecting pin 158 is acted upon by the elastic force of the reset spring 159. The reset spring 159 uses its own elastic force to pull the connecting pin 158 out of the connecting hole 1510 and retract it into the built-in groove 157. At this time, the rotating block 156 is not connected to the second gear 154, and the low-speed rotation of the cooling fan 6 will not drive the second gear 154 to rotate.

[0044] like Figure 7 As shown, the outer diameter of the connecting pin 158 matches the inner diameter of the built-in groove 157, and the outer diameter of the connecting pin 158 matches the inner diameter of the connecting hole 1510. The outer diameters of the connecting pin 158 match the inner diameters of the built-in groove 157 and the connecting hole 1510, which can ensure that the connecting pin 158 can enter the connecting hole 1510 to connect the second gear 154 and the rotating block 156.

[0045] like Figure 4 As shown, two groups of push plates 133 are provided, and the two groups of push plates 133 are symmetrical on both sides of the center line of the turntable 12. The two symmetrical groups of push plates 133 can move simultaneously, so that multiple heat dissipating fins 10 placed on one side thereof can be unfolded simultaneously.

[0046] like Figure 5 As shown, four groups of racks 141 are provided, and a group of racks 141 is provided at the upper and lower ends of each push plate 133. The symmetrically designed racks 141 can simultaneously drive the driven gears 142 located at the upper and lower ends of the heat dissipation fins 10 to rotate simultaneously, so as to better cooperate with the winding roller 143 and the winding rope 144 to apply tension to the heat dissipation fins 10 by winding them up to pull them apart.

[0047] like Figure 8As shown, a torsion assembly 16 is provided inside the turntable 12, and the torsion assembly 16 includes a connecting cavity 161. The connecting cavity 161 is opened inside the turntable 12, and a connecting disk 162 is provided inside the connecting cavity 161. The end of the connecting disk 162 is fixed on the external heat conducting plate 9, and a torsion spring 163 is provided outside the connecting disk 162. The inner end of the torsion spring 163 is fixedly connected to the connecting disk 162, and the outer end of the torsion spring 163 is fixedly connected to the inner wall of the connecting cavity 161. The inner diameter of the connecting cavity 161 matches the outer diameter of the connecting disk 162, and the turntable 12 rotates outside the connecting disk 162 through the connecting cavity 161.

[0048] When the wing plate at the bottom of the torsion block 151 is continuously pushed by the three rotating wing plates outside the shift block 152, the torsion block 151 will rotate to a certain angle and continue to maintain this angle under the action of the three wing plates outside the shift block 152. The turntable 12 will rotate to a certain angle under the action of the torsion block 151. The turntable 12 rotates outside the connecting disk 162 through the connecting cavity 161. At this time, the torsion spring 163 arranged between the connecting cavity 161 and the connecting disk 162 is twisted and deformed. When the shift block 152 does not rotate, the torsion spring 163 returns to its original state and drives the turntable 12 to rotate. The torsion block 151 is rotated and returned to its original state under the action of the turntable 12.

[0049] Working principle: First, a sufficient amount of water-cooling liquid is injected into the internal heat conduction elbow 8 and the external heat dissipation elbow 5. When the inverter body 1 is working, the circulating water pump 2 and the cooling fan 6 are started. Under the action of the circulating water pump 2, the water-cooling liquid in the internal heat conduction elbow 8 and the external heat dissipation elbow 5 circulates, and the internal heat conduction plate 7 placed inside the inverter body 1 contacts the PCB board inside it, and the heat generated by the operation of each component on the PCB board is extracted and absorbed by the water-cooling liquid flowing through the internal heat conduction elbow 8. The water-cooling liquid that absorbs the heat enters the external heat dissipation elbow 5, cooperates with the external heat conduction plate 9 to extract the heat in the water-cooling liquid in the external heat dissipation elbow 5, and the heat absorbed is transferred by the heat dissipation fins 10. The water-cooled liquid is then circulated into the built-in heat-conducting curved pipe 8 to absorb heat, thereby completing the water-cooling of the inverter body 1. Compared with the air-cooling method alone, the water-cooling method using a fan to assist the water-cooling method can reduce the load of the fan, thereby reducing the noise level. The pump and water flow in the water-cooling system are relatively quiet, which can provide a quieter working environment. In addition, the water-cooling system can reduce the volume and weight of the air-cooling radiator, making the entire system more compact and saving space. At the same time, compared with the use of air-cooling only, the cost of maintaining the water-cooling system is relatively low, and the water-cooling system does not need to replace the fan regularly, which reduces maintenance work and maintenance costs.

[0050] When the cooling fan 6 is in a low speed state, the connecting pin 158 in the built-in groove 157 on the outer wall of the rotating block 156 is retracted into the built-in groove 157. When the cooling fan 6 changes from a low speed to a high speed, under the action of centrifugal force, the connecting pin 158 is thrown from the built-in groove 157 into the connecting hole 1510 on the inner wall of the second gear 154. At the same time, the return spring 159 at the tail of the connecting pin 158 is extended by the tensile force. Under the action of the connecting pin 158, the rotating block 156 is connected to the second gear 154. Therefore, the rotation of the cooling fan 6 will drive the rotating block 156 and the second gear 154 to rotate accordingly. When the speed of the cooling fan 6 changes from high speed to low speed again, at this time, the centrifugal force is reduced and the connecting pin 158 is acted upon by the elastic force of the return spring 159. The return spring 159 uses its own elastic force to pull the connecting pin 158 out of the connecting hole 1510 and retract it into the built-in groove 157. At this time, the rotating block 156 is not connected to the second gear 154, and the low-speed rotation of the cooling fan 6 will not drive the second gear 154 to rotate.

[0051] When the inverter body 1 is at a normal temperature, the cooling fan 6 rotates at a low speed, and the cooling fan 6 drives the rotating block 156 to rotate in the second gear 154 through the connecting column 155. At this time, the second gear 154 does not rotate with the rotating block 156. When the temperature of the inverter body 1 is too high, the speed of the cooling fan 6 increases, the rotating block 156 is connected to the second gear 154, the cooling fan 6 drives the rotating block 156 to rotate, and drives the second gear 154 to rotate with it, the second gear 154 drives the meshed first gear 153 to rotate, the first gear 153 drives the shifting block 152 to rotate, and the rotating shifting block 152 The three wings on the outside of the torsion block 151 are used to continuously move the wings at the bottom of the torsion block 151 to make it rotate and be at an inclined angle. When the torsion block 151 rotates, it will drive the active push rods 131 at the upper and lower ends of the turntable 12 fixedly connected thereto to tilt, and the active push rods 131 will push the driven push rods 132 to move, and the driven push rods 132 will push the push plates 133 to move toward the positions of the heat dissipation fins 10 on both sides of the rear end of the external heat conduction plate 9. When the push plates 133 move, they will drive the racks 141 at the upper and lower ends thereof to move, and the moving racks 141 will drive the driven gears 142 meshing therewith to rotate, and the driven gears 14 2 drives the roller 143 to rotate accordingly. The rotating roller 143 applies a pulling force to the heat dissipation fins 10 by winding the winding rope 144, so as to pull the heat dissipation fins 10 to make them unfold to both sides. When the heat dissipation fins 10 are unfolded, the spacing between adjacent heat dissipation fins 10 is enlarged. By increasing the spacing between the heat dissipation fins 10, the heat dissipation surface area can be effectively increased, and the heat dissipation efficiency can be improved. The larger heat dissipation surface area can make the heat transfer to the surrounding air or cooling medium faster, and accelerate the heat dissipation. In addition, by increasing the spacing between the heat dissipation fins 10, the flow of air or cooling medium between the heat dissipation fins 10 will be faster. Smoother, reducing the resistance of fluid flow, helping to improve heat dissipation efficiency. Larger fin spacing can reduce the resistance of air on the radiator surface, reduce the noise level generated when air flows, and provide a quieter working environment. Flexible adjustment can be made according to actual heat dissipation needs. When the temperature is high, increasing the spacing of the heat dissipation fins 10 can improve the heat dissipation efficiency. When the temperature is low, reducing the spacing of the heat dissipation fins 10 can reduce the heat dissipation area and avoid excessive heat dissipation. Accurately adjusting the fin spacing can better match the heat dissipation requirements of the inverter, optimize the heat dissipation performance, and ensure that the equipment runs stably within a safe temperature range.

[0052] Adjacent heat sinks 10 are connected by connecting ropes 172, and connecting springs 171 are further provided between adjacent heat sinks 10. When the heat sinks 10 are not pulled, the connecting ropes 172 between adjacent heat sinks 10 are in a relaxed state, and the connecting springs 171 remain in their original state. When the heat sinks 10 are pulled, tension is transmitted between each heat sink 10 through the connecting ropes 172, and when the connecting ropes 172 between each adjacent heat sink fin 10 are stretched straight, each heat sink fin 10 is expanded. At this time, the spacing between multiple groups of heat sink fins 10 is enlarged, and the connecting springs 171 are in an extended state. When no tension is applied to the heat sink fins 10, the elastic force of the connecting springs 171 is used to pull each heat sink fin 10 to contract and return to a state of small spacing.

[0053] After the high-temperature heat dissipation of the inverter body 1 is completed, the cooling fan 6 changes from a high speed to a low speed, and the turntable 12 rotates and returns to its original state under the action of the torsion spring 163 inside it, and the torsion block 151 fixedly connected to the turntable 12 follows the rotation and returns to the state where its wing plate faces downward. When the turntable 12 rotates, it will drive the push plate 133 to move toward the direction of the turntable 12 by pulling the active push rod 131 and the driven push rod 132. At this time, the racks 141 at the upper and lower ends of the push plate 133 follow the movement and drive the meshing driven gear 142 to rotate in the opposite direction, and the winding roller 143 follows the driven gear 142 to rotate in the opposite direction, and the winding roller 143 will release the wound rope 144. When each heat dissipation fin 10 loses the tension of the winding rope 144, the spacing between each heat dissipation fin 10 is restored to a small spacing state under the elastic force of the connecting spring 171 between the heat dissipation fins 10.

[0054] It should be noted here that when the wing plate at the bottom of the torsion block 151 is continuously pushed by the three rotating wing plates outside the shift block 152, the torsion block 151 will rotate to a certain angle and continue to maintain this angle under the action of the three wing plates outside the shift block 152. The turntable 12 will rotate to a certain angle under the action of the torsion block 151, and the turntable 12 will rotate outside the connecting disk 162 through the connecting cavity 161. At this time, the torsion spring 163 arranged between the connecting cavity 161 and the connecting disk 162 is twisted and deformed. When the shift block 152 does not rotate, the torsion spring 163 returns to its original state and drives the turntable 12 to rotate. The torsion block 151 is rotated and returned to its original state under the action of the turntable 12.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A frequency converter heat sink, comprising an external heat dissipation elbow (5) arranged on the back of a frequency converter body (1), an external heat conduction plate (9) arranged at the rear end of the external heat dissipation elbow (5), heat dissipation fins (10) arranged on both sides of the rear end of the external heat conduction plate (9), an internal heat conduction plate (7) arranged inside the frequency converter body (1), and an internal heat conduction elbow (8) arranged at the rear end of the internal heat conduction plate (7), characterized in that: A circulating water pump (2) is installed at the output end at the top of one side of the external heat dissipation elbow (5), and the circulating water pump (2) is installed on the back of the inverter body (1). The input end of one side of the circulating water pump (2) is connected to the output end at the top of one side of the external heat dissipation elbow (5), and the output end of the other side of the circulating water pump (2) is connected to a liquid injection pipe (3), one end of the liquid injection pipe (3) extends from the outer wall of the inverter body (1) to the inside thereof, and is connected to the input end at the top of one side of the built-in heat conduction elbow (8), and a liquid outlet pipe (4) is installed at the input end at the bottom of one side of the external heat dissipation elbow (5), one end of the liquid outlet pipe (4) extends from the outer wall of the inverter body (1) to the inside thereof, and is connected to the output end at the bottom of one side of the built-in heat conduction elbow (8), and a cooling fan (6) is also installed on the back of the inverter body (1), and the cooling fan (6) covers the cooling fins (10); A turntable (12) is provided at the middle position of the rear end of the external heat conducting plate (9), and a pushing assembly (13) is provided on both sides of the turntable (12). The pushing assembly (13) includes a push plate (133), and the push plates (133) are provided on both sides of the turntable (12) and are located on one side of the heat dissipation fin (10). A driven push rod (132) is hinged at the middle position of one side of the push plate (133), and an active push rod (131) is hinged at one end of the driven push rod (132), and two groups of active push rods (131) are respectively fixed on the turntable (12); The upper and lower ends of the push plate (133) are both provided with a winding assembly (14), the winding assembly (14) comprising a rack (141), the rack (141) being fixed to the upper and lower ends of the push plate (133), and the rack (141) being placed inside a supporting cross bar (11) and being able to slide laterally inside the supporting cross bar (11), the supporting cross bar (11) being fixed to an external heat conducting plate (9), and the bottom of the rack (141) being meshed with a A driving gear (142), a roller (143) is fixed at one end of the driven gear (142), the driven gear (142) and the roller (143) are both rotatably arranged inside the supporting horizontal bar (11), a winding rope (144) is fixed on the roller (143), the winding rope (144) extends from the inside of the supporting horizontal bar (11), and the end of the winding rope (144) is fixedly connected to the two outermost groups of heat dissipation fins (10) at the rear end of the external heat conducting plate (9); A driving assembly (15) is provided at the rear end of the turntable (12), and the driving assembly (15) includes a twist block (151), the twist block (151) is fixed to the rear end of the turntable (12), a shift block (152) is provided at the bottom of the twist block (151), the shift block (152) is installed on the external heat conduction plate (9), a first gear (153) is fixed at the rear end of the shift block (152), and a second gear (154) is meshed at the top of the first gear (153), a connecting column (155) is fixed at the middle position of the front end of the fan head of the cooling fan (6), a rotating block (156) is fixed at the front end of the connecting column (155), and the second gear (154) is rotatably arranged outside the rotating block (156).

2. The inverter heat sink according to claim 1, characterized in that: Two groups of heat dissipation fins (10) close to the push plate (133) are fixed on the external heat conduction plate (9), and the heat dissipation fins (10) away from the push plate (133) can move laterally on the external heat conduction plate (9).

3. The inverter heat sink according to claim 1, characterized in that: A connecting assembly (17) is provided between two adjacent groups of the heat dissipation fins (10), the connecting assembly (17) comprises a connecting spring (171), the connecting spring (171) is fixed between the two adjacent groups of the heat dissipation fins (10), and connecting ropes (172) are provided at both upper and lower ends between the two adjacent groups of the heat dissipation fins (10), and the connecting ropes (172) are used to connect the heat dissipation fins (10).

4. The inverter heat sink according to claim 1, characterized in that: The driving assembly (15) further comprises a built-in groove (157), the built-in groove (157) being provided on the outer wall of the rotating block (156), a connecting pin (158) being provided inside the built-in groove (157), a return spring (159) being fixed to the end of the connecting pin (158), the return spring (159) being fixed to the bottom of the built-in groove (157), and a connecting hole (1510) being provided on the inner wall of the second gear (154).

5. The inverter heat sink according to claim 4, characterized in that: The number of the built-in grooves (157) and the connection holes (1510) are the same, and their positions correspond.

6. The inverter heat sink according to claim 4, characterized in that: The outer diameter of the connecting pin (158) matches the inner diameter of the built-in groove (157), and the outer diameter of the connecting pin (158) matches the inner diameter of the connecting hole (1510).

7. The inverter heat sink according to claim 1, characterized in that: The push plates (133) are provided in two groups, and the two groups of push plates (133) are symmetrical on both sides of the center line of the rotating disk (12).

8. The inverter heat sink according to claim 1, characterized in that: Four groups of racks (141) are provided, and a group of racks (141) is provided at the upper and lower ends of each group of push plates (133).

9. The inverter heat sink according to claim 1, characterized in that: A torsion assembly (16) is arranged inside the rotating disk (12), and the torsion assembly (16) comprises a connecting cavity (161). The connecting cavity (161) is opened inside the rotating disk (12), and a connecting disk (162) is arranged inside the connecting cavity (161). The end of the connecting disk (162) is fixed on the external heat conducting plate (9), and a torsion spring (163) is arranged outside the connecting disk (162). The inner end of the torsion spring (163) is fixedly connected to the connecting disk (162), and the outer end of the torsion spring (163) is fixedly connected to the inner wall of the connecting cavity (161).

10. The inverter heat sink according to claim 9, characterized in that: The inner diameter of the connecting cavity (161) matches the outer diameter of the connecting disk (162), and the rotating disk (12) rotates outside the connecting disk (162) through the connecting cavity (161).

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