Oil-cooled shell heat dissipation structure and claw-pole permanent magnet synchronous motor

Abstract

The application discloses an oil-cooled machine shell heat dissipation structure and a claw pole type permanent magnet synchronous motor, relates to the field of oil-cooled machine shells, and comprises a machine shell, a connecting rod, a first mounting sleeve, a second mounting sleeve, an oil path pipe, an oil inlet pipe and an oil outlet pipe, an oil inlet pump, an oil suction pipe and a backflow winding pipe. One end of the backflow winding pipe, which is far away from the oil outlet pipe, is connected with one side of the oil inlet pump. The inner wall of the second mounting sleeve is provided with an even cooling assembly. The first bevel gear set and the second bevel gear set are arranged. The rotation of the rotating rod can be driven by the driving of the permanent magnet motor body, so that the rotation of the rotating drum is driven. The reciprocating movement of the two reciprocating balls in the corrugated grooves on the surface of the rotating drum is driven by the rotation of the rotating drum. The movement of the two sliding blocks is driven. The movement of the two driving seats is driven by the movement of the two sliding blocks. The reciprocating movement of the two fans is driven, and the backflow winding pipe in the mounting shell is reciprocatingly cooled.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet synchronous motor technology, and in particular to an oil-cooled housing heat dissipation structure and a claw-pole permanent magnet synchronous motor. Background Technology

[0002] The development of modern industry places increasingly higher demands on motor performance, and the problem of motor heat loss restricts the use and technological development of motors of different capacities. Based on whether the cooling medium passes through the motor's interior, motor cooling methods can be divided into internal cooling and surface cooling. Due to size limitations, small and medium-sized motors often use surface cooling. Based on the different cooling media, motors can be divided into air-cooled and liquid-cooled motors, with liquid-cooled motors further including water cooling and oil cooling. Air cooling has low operating costs but high frictional losses and low heat dissipation efficiency, and is often used in motor structures with low energy density and low heat generation. Water has good electrical conductivity, so water-cooled motors cannot directly cool the internal winding structure; the internal heat-generating structures can only have their heat removed by the cooling water through heat transfer.

[0003] In existing technologies, oil-cooled motors typically have a cooling oil circulation loop added inside the motor housing. The cooling oil is forced to circulate by a pump, and as the cooling oil flows over the surface of the motor housing, it carries away the heat from the surface of the housing, thereby rapidly cooling the inside of the motor.

[0004] Currently, the oil cooling device of an oil-cooled motor is generally attached to the surface of the motor housing or built into the motor housing. The cooling oil is generally spirally distributed around the motor housing. However, the cooling oil entering the motor housing first has a lower temperature, while the cooling oil exiting the motor housing has a higher temperature, resulting in a large temperature difference between the top and bottom or between the two ends. This can easily cause large local temperature differences in the motor housing. Moreover, the cooling oil cools down slowly, resulting in a low overall cooling rate of the motor. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this application provides a uniform and efficient cooling oil-cooled housing heat dissipation structure and a claw-pole permanent magnet synchronous motor.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] An oil-cooled housing heat dissipation structure includes a housing. Two connecting rods are installed on the inner wall of the housing. The ends of the two connecting rods away from the inner wall of the housing are fitted with the same first mounting sleeve. A second mounting sleeve is installed on one side of the first mounting sleeve. Multiple pipes are provided on the inner wall of the housing. Each of the multiple pipes has an oil passage pipe, an oil inlet pipe, and an oil outlet pipe installed on its inner wall. The two ends of the multiple oil passage pipes are connected by a connecting pipe. An oil inlet pump is installed at one end of the oil inlet pipe. An oil suction pipe is installed on one side of the oil inlet pump. The end of the oil suction pipe away from the oil inlet pump extends to the outside of the housing. A return flow winding pipe is installed at one end of the oil outlet pipe. The end of the return flow winding pipe away from the oil outlet pipe is connected to the side of the oil inlet pump. A uniform cooling component is installed on the inner wall of the second mounting sleeve.

[0008] Preferably, the uniform cooling component includes a rotating rod, one end of which is equipped with a driving unit, and the other end of the rotating rod is rotatably connected to a rotating cylinder via the driving unit. A limiting unit is provided on the surface of the rotating cylinder, and a cooling unit is installed on the surface of the rotating cylinder via the limiting unit.

[0009] Preferably, the drive unit includes a first bevel gear set, which is mounted on the surface of the rotating rod. A fixing rod is mounted on the inner wall of the second mounting sleeve. The second bevel gear set is sleeved on the surface of the fixing rod. The rotating drum is driven by the second bevel gear set. A support rod is mounted on the inner wall of the second mounting sleeve. A fixing sleeve is mounted on the top end of the support rod. The inner wall of the fixing sleeve is rotatably connected to one end of the rotating drum.

[0010] Preferably, the limiting unit includes two support plates installed on the inner wall of the second mounting sleeve. Each of the two support plates has a limiting plate installed on its top side, an elliptical groove is provided on one side of each of the two limiting plates, and a limiting rod is installed on one side of each of the two limiting plates.

[0011] Preferably, the surface of the rotating drum is provided with a corrugated groove, and two reciprocating balls are slidably connected to the inner wall of the corrugated groove. A slider is installed on the surface of each of the two reciprocating balls, and an avoidance hole is provided on one side of each of the two sliders. The avoidance hole is slidably connected to the surface of the limiting rod.

[0012] Preferably, the cooling unit includes a drive seat mounted on one side of the two sliders, a fan is mounted on the top side of each of the two drive seats, and one side of each of the two drive seats is slidably connected to the inner wall of the elliptical groove via a slide rod.

[0013] Preferably, the surface of the housing is provided with a plurality of heat dissipation fins, the inner wall of the second mounting sleeve is provided with a mounting shell, and the bottom side of the mounting shell is provided with a plurality of ventilation holes.

[0014] A claw-pole permanent magnet synchronous motor includes a permanent magnet motor body and the aforementioned oil-cooled housing heat dissipation structure, wherein the permanent magnet motor body is installed inside the first mounting sleeve.

[0015] Preferably, the inner wall of the first mounting sleeve is provided with a plurality of mounting grooves, and the inner walls of the plurality of mounting grooves are slidably connected with mounting blocks, and the same protective shell is installed on the side of the plurality of mounting blocks away from the inner wall of the mounting groove.

[0016] Preferably, the permanent magnet motor body is mounted on the inner wall of the protective shell, and the end of the rotating rod away from the first bevel gear set is connected to the output end of the permanent magnet motor.

[0017] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0018] 1. This invention includes a uniform cooling component. Driven by the permanent magnet motor, the rotating rod rotates, which in turn drives the first and second bevel gear sets, causing the rotating drum to rotate. The rotating drum drives two reciprocating balls to reciprocate within the corrugated grooves on its surface. The movement of the two reciprocating balls drives two sliders, which in turn drives two drive seats. The drive seats provide power to the fans, and the movement of the two drive seats drives the reciprocating motion of the two fans. This reciprocating motion cools the return oil coil inside the mounting housing, resulting in faster cooling of the returned oil during the cyclic return cooling process. The multi-path return coil further improves the cooling time. This structural design solves the problem of low-temperature cooling oil entering the motor housing and high-temperature cooling oil exiting the motor housing, leading to a large local temperature difference in the motor housing and a slow cooling rate of the cooling oil, resulting in a low overall cooling rate of the motor.

[0019] 2. In this invention, multiple oil passages and connecting pipes can be set up on the inner wall of the casing to improve the cooling effect. The oil inlet pump and oil suction pipe can be used to achieve circulation inside the oil passages. The oil outlet pipe is connected to the return winding pipe, and the return winding pipe is connected to the oil inlet pump to achieve internal oil circulation. The mounting shell can support and protect the return winding pipe.

[0020] 3. The present invention enables the disassembly of the protective shell through the installation groove and the installation block, thereby achieving quick assembly and disassembly of the permanent magnet motor body. At the same time, the matching of the installation groove and the installation block can limit the position of the protective shell, thereby achieving a fixed effect on the permanent magnet motor. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the permanent magnet motor mounting structure in this invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the casing in this invention;

[0025] Figure 5 This is a schematic diagram of the uniform cooling component structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the reciprocating cooling structure in this invention;

[0027] Figure 7 for Figure 6 A magnified schematic diagram of a portion of region A in the middle.

[0028] In the diagram: 1. Housing; 2. Heat dissipation fins; 3. Connecting rod; 4. First mounting sleeve; 5. Second mounting sleeve; 6. Mounting groove; 7. Mounting block; 8. Protective shell; 9. Permanent magnet motor body; 10. Oil pipe; 11. Connecting pipe; 12. Oil outlet pipe; 13. Oil inlet pipe; 14. Mounting shell; 15. Oil pump; 16. Suction pipe; 17. Return winding pipe; 18. Rotating rod; 19. First bevel gear set; 20. Second bevel gear set; 21. Support rod; 22. Fixing sleeve; 23. Rotary cylinder; 24. Corrugated groove; 25. Support plate; 26. Limiting plate; 27. Elliptical groove; 28. Limiting rod; 29. ​​Slider; 30. Reciprocating ball bearing; 31. Drive seat; 32. Fan. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0030] Example 1: As Figure 1-7 The oil-cooled housing heat dissipation structure shown includes a housing 1. Two connecting rods 3 are installed on the inner wall of the housing 1. The ends of the two connecting rods 3 away from the inner wall of the housing 1 are equipped with the same first mounting sleeve 4. A second mounting sleeve 5 is installed on one side of the first mounting sleeve 4. Multiple pipes are opened on the inner wall of the housing 1. Oil pipes 10, oil inlet pipes 13 and oil outlet pipes 12 are installed on the inner walls of the multiple pipes. The two ends of the multiple oil pipes 10 are connected by a connecting pipe 11. An oil pump 15 is installed at one end of the oil inlet pipe 13. An oil suction pipe 16 is installed on one side of the oil pump 15. The end of the oil suction pipe 16 away from the oil pump 15 extends to the outside of the housing 1. A return winding pipe 17 is installed at one end of the oil outlet pipe 12. The end of the return winding pipe 17 away from the oil outlet pipe 12 is connected to the side of the oil pump 15. A uniform cooling component is installed on the inner wall of the second mounting sleeve 5.

[0031] Based on the above structure, multiple sets of oil circuits can be set on the inner wall of the housing 1 through the multiple oil circuit pipes 10 and connecting pipes 11, thereby improving the cooling effect; through the cooperation of the oil inlet pump 15 and the oil suction pipe 16, the internal circulation effect of the oil circuit pipes 10 can be achieved; through the connection of the oil outlet pipe 12 with the return winding pipe 17, and the connection of the return winding pipe 17 with the oil inlet pump 15, the internal oil circuit circulation is realized.

[0032] like Figure 5 and 6 As shown, the uniform cooling assembly includes a rotating rod 18, with a drive unit mounted at one end of the rotating rod 18. A rotating drum 23 is rotatably connected to one end of the rotating rod 18 via the drive unit. A limiting unit is provided on the surface of the rotating drum 23, and a cooling unit is mounted on the surface of the rotating drum 23 via the limiting unit. The drive unit includes a first bevel gear set 19, which is mounted on the surface of the rotating rod 18. A fixing rod is mounted on the inner wall of the second mounting sleeve 5, and a second bevel gear set 20 is sleeved on the surface of the fixing rod. The rotating drum 23 is connected to the second bevel gear set 20 via the second bevel gear set 20. The transmission is carried out by 0. A support rod 21 is installed on the inner wall of the second mounting sleeve 5. A fixing sleeve 22 is installed on the top of the support rod 21. The inner wall of the fixing sleeve 22 is rotatably connected to one end of the rotating drum 23. Through the first bevel gear set 19 and the second bevel gear set 20, the rotating rod 18 can be driven by the permanent magnet motor body 9, which in turn drives the first bevel gear set 19 and the second bevel gear set 20 to move, thereby driving the rotating drum 23 to rotate. One end of the rotating drum 23 can be fixed by the support rod 21 and the fixing sleeve 22.

[0033] Example 2: As Figure 6 As shown, the limiting unit includes two support plates 25 installed on the inner wall of the second mounting sleeve 5. Limiting plates 26 are installed on the top side of each of the two support plates 25. Elliptical grooves 27 are opened on one side of each of the two limiting plates 26. Limiting rods 28 are installed on one side of each of the two limiting plates 26. Corrugated grooves 24 are opened on the surface of the rotating cylinder 23. Two reciprocating balls 30 are slidably connected to the inner wall of the corrugated grooves 24. Slider 29 is installed on the surface of each of the two reciprocating balls 30. A clearance hole is opened on one side of each of the two sliders 29, and the clearance hole is slidably connected to the surface of the limiting rod 28. By rotating the rotating cylinder 23, the two reciprocating balls 30 can be driven to reciprocate within the corrugated grooves 24 on the surface of the rotating cylinder 23. The movement of the two reciprocating balls 30 can drive the movement of the two sliders 29, and thus drive the movement of the two drive seats 31.

[0034] like Figure 6 and 7As shown, the cooling unit includes a drive seat 31 mounted on one side of two sliders 29. A fan 32 is mounted on the top side of each of the two drive seats 31. One side of each drive seat 31 is slidably connected to the inner wall of the elliptical groove 27 via a slide rod. Multiple heat dissipation fins 2 are mounted on the surface of the housing 1. A mounting shell 14 is mounted on the inner wall of the second mounting sleeve 5. Multiple ventilation holes are opened on the bottom side of the mounting shell 14. The movement of the two drive seats 31 can drive the reciprocating movement of the two fans 32, thereby reciprocatingly cooling the return winding tube 17 inside the mounting shell 14. This makes the oil cool down faster during the cyclic return cooling. The cooling time can be increased by setting multiple return winding tubes 17.

[0035] A claw-pole permanent magnet synchronous motor includes a permanent magnet motor body 9 and a first mounting sleeve 4. The permanent magnet motor body 9 is installed inside the first mounting sleeve 4. The inner wall of the first mounting sleeve 4 has multiple mounting grooves 6. Mounting blocks 7 are slidably connected to the inner walls of the multiple mounting grooves 6. The same protective shell 8 is installed on the side of the multiple mounting blocks 7 away from the inner wall of the mounting grooves 6. The permanent magnet motor body 9 is installed on the inner wall of the protective shell 8. The end of the rotating rod 18 away from the first bevel gear set 19 is connected to the output end of the permanent magnet motor. The protective shell 8 can be disassembled through the mounting grooves 6 and the mounting blocks 7, thereby disassembling the permanent magnet motor body 9. At the same time, the matching of the mounting grooves 6 and the mounting blocks 7 can limit the protective shell 8, thereby achieving a fixing effect on the permanent magnet motor.

[0036] Working principle of this invention:

[0037] In use, the permanent magnet motor body 9 drives the rotating rod 18 to rotate, which in turn drives the first bevel gear set 19 and the second bevel gear set 20 to move, thereby driving the rotating drum 23 to rotate. The rotation of the rotating drum 23 causes two reciprocating balls 30 to reciprocate within the corrugated grooves 24 on the surface of the rotating drum 23. The movement of the two reciprocating balls 30 drives the movement of two sliders 29. The movement of the two sliders 29 drives the movement of two drive seats 31, which provide power to the fan 32. This can drive the reciprocating motion of two fans 32, thereby reciprocating and cooling the return winding tube 17 inside the mounting housing 14, so that the oil cools down faster during the circulation cooling process. The multi-channel return winding tube 17 can improve the cooling time. Through the above structural design, the problem of the cooling oil entering the motor housing 1 at one end being at a lower temperature and exiting the motor housing 1 at a higher temperature, resulting in a temperature difference between the top and bottom, causing a large local temperature difference in the motor housing 1, and the slow cooling speed of the cooling oil, resulting in a low overall cooling rate of the motor, is solved.

[0038] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art can modify or make equivalent substitutions to the technical solutions described in the foregoing embodiments. Any modifications or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oil-cooled housing heat dissipation structure, comprising a housing (1), characterized in that: Two connecting rods (3) are installed on the inner wall of the housing (1). The two connecting rods (3) are equipped with the same first mounting sleeve (4) at the end away from the inner wall of the housing (1). A second mounting sleeve (5) is installed on one side of the first mounting sleeve (4). Multiple pipelines are provided on the inner wall of the housing (1). Oil pipes (10), oil inlet pipes (13), and oil outlet pipes (12) are installed on the inner walls of the multiple pipelines. The two ends of the multiple oil pipes (10) are connected by a connecting pipe (11). The oil inlet pipe (13) is equipped with an oil inlet pump (15) at one end, and an oil suction pipe (16) is installed on one side of the oil inlet pump (15). The end of the oil suction pipe (16) away from the oil inlet pump (15) extends to the outside of the housing (1). A return winding pipe (17) is installed at one end of the oil outlet pipe (12). The end of the return winding pipe (17) away from the oil outlet pipe (12) is connected to one side of the oil inlet pump (15). A uniform cooling component is installed on the inner wall of the second mounting sleeve (5). The uniform cooling component includes a rotating rod (18), one end of which is equipped with a driving unit. One end of the rotating rod (18) is rotatably connected to a rotating cylinder (23) through the driving unit. A limiting unit is provided on the surface of the rotating cylinder (23), and a cooling unit is installed on the surface of the rotating cylinder (23) through the limiting unit. The drive unit includes a first bevel gear set (19), which is mounted on the surface of a rotating rod (18). The end of the rotating rod (18) away from the first bevel gear set (19) is connected to the output end of a permanent magnet synchronous motor. The limiting unit includes two support plates (25) installed on the inner wall of the second mounting sleeve (5). A limiting plate (26) is installed on the top side of each of the two support plates (25). An elliptical groove (27) is opened on one side of each of the two limiting plates (26). A limiting rod (28) is installed on one side of each of the two limiting plates (26). The surface of the rotating drum (23) is provided with a corrugated groove (24), and two reciprocating balls (30) are slidably connected to the inner wall of the corrugated groove (24). The surfaces of the two reciprocating balls (30) are each equipped with a slider (29). A clearance hole is provided on one side of the two sliders (29), and the clearance hole is slidably connected to the surface of the limiting rod (28). The cooling unit includes a drive seat (31) installed on one side of the two sliders (29), and a fan (32) is installed on the top side of each of the two drive seats (31). One side of the two drive seats (31) is slidably connected to the inner wall of the elliptical groove (27) by a slide rod.

2. The oil-cooled casing heat dissipation structure according to claim 1, characterized in that: A fixing rod is installed on the inner wall of the second mounting sleeve (5), and a second bevel gear set (20) is sleeved on the surface of the fixing rod. The rotating drum (23) is driven by the second bevel gear set (20). A support rod (21) is installed on the inner wall of the second mounting sleeve (5), and a fixing sleeve (22) is installed at the top of the support rod (21). The inner wall of the fixing sleeve (22) is rotatably connected to one end of the rotating drum (23).

3. The oil-cooled casing heat dissipation structure according to claim 1, characterized in that: The surface of the housing (1) is equipped with multiple heat dissipation fins (2), and the inner wall of the second mounting sleeve (5) is equipped with a mounting shell (14), and the bottom side of the mounting shell (14) is provided with multiple ventilation holes.

4. A claw-pole permanent magnet synchronous motor, characterized in that: It includes a permanent magnet motor body (9) and an oil-cooled housing heat dissipation structure as described in any one of claims 1-3.

5. A claw-pole permanent magnet synchronous motor according to claim 4, characterized in that: The permanent magnet motor body (9) is installed inside the first mounting sleeve (4). The inner wall of the first mounting sleeve (4) is provided with multiple mounting grooves (6). The inner walls of the multiple mounting grooves (6) are slidably connected with mounting blocks (7). The side of the multiple mounting blocks (7) away from the inner wall of the mounting grooves (6) is equipped with the same protective shell (8).

6. A claw-pole permanent magnet synchronous motor according to claim 5, characterized in that: The permanent magnet motor body (9) is installed on the inner wall of the protective shell (8).

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