A permanent magnet synchronous motor with slot shoulder and tooth yoke separated

Abstract

The present invention relates to the technical field of permanent magnet synchronous motors, and discloses a permanent magnet synchronous motor with a slot shoulder separated from a tooth yoke, comprising a base plate and a motor assembly, wherein the motor assembly is arranged on the top of the base plate, a cooling mechanism is arranged on the top of the base plate, and the motor assembly comprises a shell, wherein the shell is arranged on the top of the base plate, a support seat is fixedly connected to the bottom of the shell, and the support seat is fixedly connected to the top of the base plate. Through the design of the cooling mechanism, a coolant is installed in the cooling frame, and when the motor is working and heat is transferred to the auxiliary frame, the coolant flows, and after flowing through the auxiliary frame, the heat can be taken away, and its heat dissipation method is to dissipate heat directly inside the motor housing, and the heat dissipation method is more direct, and the heat dissipation effect can be effectively improved accordingly. Secondly, when the coolant flows through the first cooling pipe and the second cooling pipe, the purpose of circulating heat dissipation can be fully achieved, and the heat dissipation efficiency of the coolant is properly guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet synchronous motors, and in particular to a permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated. Background Art

[0002] Permanent magnet synchronous motors have the advantages of simple structure, small size, high efficiency and high power factor. Permanent magnet synchronous motors have been used in medium and low voltage motors in the metallurgical industry, ceramic industry, rubber industry, petroleum industry, textile industry and other industries, and have gradually accumulated design and operation experience.

[0003] The Chinese patent application with publication number CN114142681B proposes a water-cooled self-heating permanent magnet synchronous motor, including a main body; a stator and a rotor are installed inside the main body, and the rotor is located inside the stator, and a heat dissipation device storage device is installed on the right side of the rotor, the storage device is installed on the main body, and a limiting component is installed on the front side of the storage device, and a cooling component is installed inside the storage device, and a pushing component is installed on the right side of the cooling component; a driving device, the driving device is installed on the top of the main body; a spraying device, the spraying device is installed on the top of the storage device, and an extrusion component is installed inside the spraying device; the outside of the base can be quickly cooled, the heat dissipation effect is improved, and the circulation of water resources is realized, which is more convenient for staff to use; the problem of heat dissipation through fans is solved.

[0004] In order to improve the heat dissipation performance of the motor, the above device achieves a rapid cooling effect by spraying water on the outside of the base. The cooling process relies on the water sprayed from the top to enter the bottom and cool the bottom of the base again. First, the outer shell of the motor is cooled, but the cooling effect is not good. Secondly, the water is recycled, but the water used for cooling lacks effective heat dissipation and cooling function. If the temperature of the base is too high, the heat is transferred to the water, and the temperature of the water is also too high. When the heat cannot be transferred to the outside in time, it will directly lead to a decrease in its heat dissipation performance. Therefore, a permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated is proposed to solve the above problems. Summary of the invention

[0005] In order to solve the above-mentioned problem, the present invention provides a permanent magnet synchronous motor in which a slot shoulder is separated from a tooth yoke.

[0006] The present invention provides a permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated, which adopts the following technical solution:

[0007] A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated, comprising a bottom plate and a motor assembly, wherein the motor assembly is arranged on the top of the bottom plate, and a cooling mechanism is arranged on the top of the bottom plate for cooling the motor assembly;

[0008] The motor assembly includes a shell, the shell is arranged on the top of the bottom plate, the bottom of the shell is fixedly connected to a support seat, the support seat is fixedly connected to the top of the bottom plate, the inside of the shell is fixedly connected to a stator core tooth yoke, the stator core tooth yoke is fixedly connected to an insulating frame, the insulating frame is wound with a coil, the inside of the stator core tooth yoke is provided with a stator core slot shoulder, the stator core slot shoulder is placed inside the stator core tooth yoke and matches the stator core tooth yoke, a rotor is installed inside the shell, the rotor passes through the stator core slot shoulder and matches the stator core slot shoulder, the two sides of the rotor are respectively fixedly connected to a first rotating shaft and a second rotating shaft, and one side of the shell is provided with a cover plate;

[0009] The cooling mechanism includes a first annular frame and a second annular frame, both of which are fixedly connected to the outside of the shell, a cooling groove is opened on the shell, the cooling groove is respectively connected to the first annular frame and the second annular frame, the cooling grooves are distributed around the shell wall at intervals, an auxiliary frame is fixedly connected inside the cooling groove, a first cooling pipe is fixedly connected to the bottom of the first annular frame, a cooling frame is fixedly connected to the top of the base plate, a pump body is arranged between the cooling frame and the first cooling pipe, an input end of the pump body is fixedly connected to the first cooling pipe, an output end of the pump body is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to a side wall of the cooling frame, a second cooling pipe is fixedly connected to the front side wall of the cooling frame, and one end of the second cooling pipe is fixedly connected to the top of the second annular frame.

[0010] By adopting the above technical solution, the cooling frame is filled with coolant. When the motor is working, when the heat is transferred to the auxiliary frame, the coolant flows, and after flowing through the auxiliary frame, the heat can be taken away. The heat dissipation method is to dissipate heat directly inside the motor housing. The heat dissipation method is more direct and can effectively improve the heat dissipation effect accordingly. Secondly, when the coolant flows through the first cooling pipe and the second cooling pipe, the purpose of circulating heat dissipation can be fully achieved, and the heat dissipation efficiency of the coolant is properly guaranteed.

[0011] Preferably, the first cooling pipe passes through the support seat and is fixedly connected to the support seat, a protective frame is fixedly connected to one side wall of the shell, a filter plate is fixedly connected to one side wall of the protective frame, the second rotating shaft extends into the interior of the protective frame, the outside of the second rotating shaft is fixedly connected to the first fan blade, an extension rod is integrally formed at one end of the second rotating shaft, the extension rod passes through the filter plate and is rotatably connected to the filter plate, a round rod is rotatably connected to the inside of the protective frame, an air inlet hole is opened on one side wall of the shell, and a dust net is fixedly connected to the cover plate.

[0012] By adopting the above technical solution, the filter plate can effectively filter the dust in the air when the gas enters, and the dustproof net can prevent external dust from entering the inside of the shell.

[0013] Preferably, a horizontal plate is fixedly connected to the inside of the protective frame, the round rod passes through the horizontal plate and is rotatably connected to the horizontal plate, the bottom of the protective frame is fixedly connected to a box body, the round rod extends into the inside of the box body, a first through groove is opened on one side wall of the box body, a second through groove is opened at the bottom of the box body, and the second fan blade is fixedly connected to the outside of the round rod.

[0014] By adopting the above technical solution, the first through groove allows external air to enter the interior of the box body, while the airflow generated by the rotation of the second fan blade is discharged through the second through groove, forming a ventilation effect.

[0015] Preferably, a first bevel gear is fixedly connected to the outside of the extension rod, a second bevel gear is fixedly connected to the top of the round rod, the second bevel gear is arranged at the bottom of the first bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0016] By adopting the above technical solution, the rotation of the first bevel gear can drive the second bevel gear to rotate.

[0017] Preferably, a scraper is fixedly connected to the outside of the extension rod, and one side of the scraper is in contact with the filter plate.

[0018] By adopting the above technical solution, the scraper can scrape off the impurities that may exist on the filter plate after rotating.

[0019] Preferably, a heat conducting plate is fixedly connected inside the cooling frame, and the heat conducting plates are arranged and distributed at equal intervals inside the cooling frame. The heat conducting plates penetrate the top wall of the cooling frame, and heat dissipation holes are opened on the top wall of the heat conducting plates.

[0020] By adopting the above technical solution, the heat in the coolant in the cooling frame is transferred to the heat conducting plate and dissipated to the outside, and the heat dissipation holes further improve the heat dissipation efficiency.

[0021] Preferably, a first limit plate is fixedly connected to one side wall of the shell, and the first limit plates are arranged at equal intervals on one side wall of the shell. A second limit plate is fixedly connected to one side of the cover plate, and the second limit plates are arranged at equal intervals on the cover plate. An L-shaped plate is arranged between the first limit plate and the second limit plate, and the L-shaped plate passes through the first limit plate and the second limit plate in sequence.

[0022] By adopting the above technical solution, after the L-shaped plate passes through the first limiting plate, the clamping block extends out to provide limiting for the L-shaped plate.

[0023] Preferably, a card block is slidably connected inside the L-shaped plate, the card block extends outside the L-shaped plate, the bottom of the card block fits with the top of the first limiting plate, and a spring is fixedly connected inside the L-shaped plate, and the spring is fixedly connected to the card block.

[0024] By adopting the above technical solution, the spring exerts an elastic force on the clamping block.

[0025] In summary, the present invention includes the following beneficial technical effects:

[0026] 1. A permanent magnet synchronous motor with a slot shoulder separated from a tooth yoke. Through the design of a cooling mechanism, a cooling liquid is installed in a cooling frame. When the motor is working and heat is transferred to the auxiliary frame, the cooling liquid flows. After flowing through the auxiliary frame, the heat can be taken away. The heat dissipation method is to dissipate heat directly inside the motor housing. The heat dissipation method is more direct and can effectively improve the heat dissipation effect accordingly. Secondly, when the coolant flows through the first cooling pipe and the second cooling pipe, the purpose of circulating heat dissipation can be fully achieved, and the heat dissipation efficiency of the coolant is properly guaranteed.

[0027] 2. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated, based on the heat dissipation by the flow of coolant, after the rotor rotates, it drives the first rotating shaft and the second rotating shaft to rotate, and after the first fan blade rotates, it draws the external airflow into the shell, thereby promoting the airflow to flow inside the shell for air cooling and heat dissipation. In order to quickly dissipate the heat in the coolant, the heat carried by the coolant can be transferred to the heat conduction plate. The airflow generated by the rotation of the second fan blade performs air cooling and heat dissipation on the heat conduction plate, further improving the heat dissipation rate of the coolant itself.

[0028] 3. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated. Through the design of the motor assembly, the structure of the stator core slot shoulder and the stator core tooth yoke are separated, so that the coil wound on the insulating frame can occupy the slot area more effectively, thereby achieving the purpose of optimizing the slot fill rate. In addition, compared with the traditional separate structure, the stator core tooth yoke structure has a relatively small inner hole size, so the internal separation and splicing can more effectively control the out-of-roundness of the inner hole, thereby reducing the tooth torque of the motor, improving the mechanical effect, improving product quality, and helping to improve service life and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 is a cross-sectional view of the structure of the present invention;

[0031] Figure 3 for Figure 2 A in the enlarged view;

[0032] Figure 4 It is a structural cross-sectional view of the protection frame in the present invention;

[0033] Figure 5 for Figure 4 The enlarged view of point B in the figure;

[0034] Figure 6This is a disassembled diagram of the cover plate and the shell in the present invention;

[0035] Figure 7 It is a cross-sectional structural diagram of the L-shaped plate in the present invention;

[0036] Figure 8 for Figure 7 Zoom in on C in the figure;

[0037] Fig. 9 This is a disassembled diagram of the stator core yoke and the rotor in the present invention.

[0038] Description of the accompanying drawings: 1. bottom plate; 2. motor assembly; 21. housing; 22. support seat; 23. stator core tooth yoke; 24. insulation frame; 25. coil; 26. stator core slot shoulder; 27. rotor; 28. first rotating shaft; 29. ​​second rotating shaft; 291. cover plate; 292. first limiting plate; 293. second limiting plate; 294. L-shaped plate; 295. block; 296. leaf spring; 3. cooling mechanism; 31. first annular frame; 32. The second annular frame; 33, cooling groove; 34, auxiliary frame; 35, first cooling pipe; 36, cooling frame; 37, pump body; 38, connecting pipe; 39, second cooling pipe; 391, protection frame; 392, filter plate; 393, first fan blade; 394, extension rod; 395, round rod; 396, air inlet hole; 397, box body; 398, second fan blade; 399, first bevel gear; 381, second bevel gear; 382, ​​scraper; 383, heat transfer plate. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-9 The present invention is described in further detail.

[0040] The present invention discloses a permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated. Figure 1-9 A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated comprises a base plate 1 and a motor assembly 2, wherein the motor assembly 2 is arranged on the top of the base plate 1, and a cooling mechanism 3 is arranged on the top of the base plate 1 for cooling the motor assembly 2;

[0041] The motor assembly 2 includes a shell 21, which is arranged on the top of the base plate 1. A support seat 22 is fixedly connected to the bottom of the shell 21, and the support seat 22 is fixedly connected to the top of the base plate 1. A stator core tooth yoke 23 is fixedly connected inside the shell 21, and an insulating frame 24 is fixedly connected to the stator core tooth yoke 23. A coil 25 is wound on the insulating frame 24. A stator core slot shoulder 26 is placed inside the stator core tooth yoke 23, and the stator core slot shoulder 26 is placed inside the stator core tooth yoke 23 and matches the stator core tooth yoke 23. A rotor 27 is installed inside the shell 21, and the rotor 27 passes through the stator core slot shoulder 26 and matches the stator core slot shoulder 26. A first rotating shaft 28 and a second rotating shaft 29 are fixedly connected to both sides of the rotor 27, respectively. A cover plate 291 is provided on one side of the shell 21;

[0042] The cooling mechanism 3 includes a first annular frame 31 and a second annular frame 32, both of which are fixedly connected to the outside of the shell 21. A cooling groove 33 is provided on the shell 21, and the cooling groove 33 is respectively connected to the first annular frame 31 and the second annular frame 32. The cooling grooves 33 are distributed around the wall of the shell 21 at intervals, and an auxiliary frame 34 is fixedly connected inside the cooling groove 33. A first cooling pipe 35 is fixedly connected to the bottom of the first annular frame 31, and a cooling frame 36 is fixedly connected to the top of the bottom plate 1. A pump body 37 is provided between the cooling frame 36 and the first cooling pipe 35, and an input end of the pump body 37 is fixedly connected to the first cooling pipe 35.

[0043] A connecting pipe 38 is fixedly connected to the output end of the pump body 37, one end of the connecting pipe 38 is fixedly connected to a side wall of the cooling frame 36, a second cooling pipe 39 is fixedly connected to the front side wall of the cooling frame 36, one end of the second cooling pipe 39 is fixedly connected to the top of the second annular frame 32, and the cooling frame 36 is filled with coolant. When the motor is working, when heat is transferred to the auxiliary frame 34, the coolant flows, and after flowing through the auxiliary frame 34, the heat can be taken away. The heat dissipation method is to dissipate heat directly inside the motor housing 21. The heat dissipation method is more direct, and the heat dissipation effect can be effectively improved accordingly. Secondly, when the coolant flows through the first cooling pipe 35 and the second cooling pipe 39, the purpose of circulating heat dissipation can be fully achieved, and the heat dissipation efficiency of the coolant is properly guaranteed.

[0044] The first cooling pipe 35 passes through the support seat 22 and is fixedly connected to the support seat 22. A protective frame 391 is fixedly connected to one side wall of the shell 21. A filter plate 392 is fixedly connected to one side wall of the protective frame 391. The second rotating shaft 29 extends into the interior of the protective frame 391. The outside of the second rotating shaft 29 is fixedly connected to a first fan blade 393. An extension rod 394 is integrally formed at one end of the second rotating shaft 29. The extension rod 394 passes through the filter plate 392 and is rotatably connected to the filter plate 392. A round rod 395 is rotatably connected to the inside of the protective frame 391. An air inlet hole 396 is opened on one side wall of the shell 21. A dustproof net is fixedly connected to the cover plate 291. The filter plate 392 can effectively filter dust in the air when gas enters, and the dustproof net can prevent external dust from entering the inside of the shell 21.

[0045] A horizontal plate is fixedly connected inside the protection frame 391, and a round rod 395 passes through the horizontal plate and is rotatably connected to the horizontal plate. A box body 397 is fixedly connected to the bottom of the protection frame 391, and the round rod 395 extends into the box body 397. A first through slot is provided on one side wall of the box body 397, and a second through slot is provided at the bottom of the box body 397. A second fan blade 398 is fixedly connected to the outside of the round rod 395. The first through slot allows external gas to enter the inside of the box body 397, and the airflow generated by the rotation of the second fan blade 398 is discharged through the second through slot to form a ventilation effect. The first bevel gear 399 is fixedly connected to the outside of the extension rod 394, and the second bevel gear 381 is fixedly connected to the top of the round rod 395. The second bevel gear 381 is arranged at the bottom of the first bevel gear 399, and the second bevel gear 381 is meshed with the first bevel gear 399. After the first bevel gear 399 rotates, it can drive the second bevel gear 381 to rotate;

[0046] The extension rod 394 is fixedly connected to the outside with a scraper 382, ​​one side of the scraper 382 is in contact with the filter plate 392, and the scraper 382 can scrape off the impurities that may exist on the filter plate 392 after rotating. The cooling frame 36 is fixedly connected to the inside with a heat conducting plate 383, and the heat conducting plates 383 are arranged and distributed at equal intervals inside the cooling frame 36. The heat conducting plates 383 penetrate the top wall of the cooling frame 36, and heat dissipation holes are opened on the top wall of the heat conducting plates 383. The heat in the coolant in the cooling frame 36 is transferred to the heat conducting plates 383 and dissipated to the outside, and the heat dissipation holes further improve the heat dissipation efficiency;

[0047] A first limiting plate 292 is fixedly connected to one side wall of the shell 21, and the first limiting plates 292 are arranged at equal intervals on one side wall of the shell 21. A second limiting plate 293 is fixedly connected to one side of the cover plate 291, and the second limiting plates 293 are arranged at equal intervals on the cover plate 291. An L-shaped plate 294 is arranged between the first limiting plate 292 and the second limiting plate 293, and the L-shaped plate 294 passes through the first limiting plate 292 and the second limiting plate 293 in sequence. After the L-shaped plate 294 passes through the first limiting plate 292, the block 295 extends out to provide a limit for the L-shaped plate 294, and the inside of the L-shaped plate 294 is slidably connected with the block 295, and the block 295 extends out of the outside of the L-shaped plate 294, and the bottom of the block 295 fits with the top of the first limiting plate 292. A spring leaf 296 is fixedly connected to the inside of the L-shaped plate 294, and the spring leaf 296 is fixedly connected to the block 295.

[0048] In actual operation, the device is first powered on. The cooling frame 36 in the device is filled with coolant. When the motor device is working, the pump body 37 works to pump the coolant. After the coolant leaves the cooling frame 36, it enters the second annular frame 32 through the second cooling pipe 39, then enters the auxiliary frame 34 through the cooling groove 33 inside the second annular frame 32, then enters the second annular frame 32 through the cooling groove 33 inside the first annular frame 31, and finally enters the first cooling pipe 35 and then re-enters the cooling frame 36, thereby achieving a circulating flow effect. Since the first cooling pipe 35 and the second cooling pipe 39 are relatively long, it can be ensured that the coolant can transfer heat to the outside during the overall flow process.

[0049] When the above coolant flows through the auxiliary frame 34, since the auxiliary frame 34 is inside the shell 21, it can directly absorb the heat inside the shell 21 to achieve the purpose of direct heat dissipation, and the heat dissipation effect is better. On this basis, when the motor is working, under the action of the magnetic field, the rotor 27 starts to rotate. This working principle is the same as the working principle of the existing permanent magnet synchronous motor, so it will not be repeated here. After the rotor 27 rotates, it drives the first shaft 28 and the second shaft 29 to rotate. When the second shaft 29 rotates, it drives the first fan blade 393 to rotate. After the first fan blade 393 rotates, it draws the external airflow into the shell 21. The auxiliary frame 34 is installed in the cooling groove 33, and there is a distance gap between the auxiliary frame 34 and the stator core tooth yoke 23. Therefore, the airflow can quickly pass through this gap and finally be discharged from the dust net on the cover plate 291, thereby prompting the airflow to flow inside the shell 21 for air cooling and heat dissipation;

[0050] When the airflow enters the housing 21, it first passes through the filter plate 392, which can filter impurities in the air to prevent the impurities from entering the housing 21 and causing adverse effects. When the second rotating shaft 29 rotates, it also drives the extension rod 394 to rotate, and the extension rod 394 drives the scraper 382 to rotate. After the scraper 382 rotates, it can scrape off the impurities that may be adsorbed on the filter plate 392, thereby ensuring the smoothness of the airflow when entering and ensuring the heat dissipation efficiency.

[0051] In order to quickly dissipate the heat in the coolant, when the coolant is inside the cooling frame 36, the heat carried therein can be transferred to the heat conducting plate 383, and while the extension rod 394 rotates, the extension rod 394 drives the first bevel gear 399 to rotate, the first bevel gear 399 drives the second bevel gear 381 to rotate, the second bevel gear 381 drives the round rod 395 to rotate, the round rod 395 drives the second fan blade 398 to rotate, and the airflow generated when the second fan blade 398 rotates cools the heat conducting plate 383, further improving the heat dissipation speed of the coolant itself;

[0052] Finally, the present device utilizes the structure of separating the stator core slot shoulder 26 from the stator core tooth yoke 23, so that the wire package wound on the insulating frame 24 can more effectively occupy the slot area, thereby achieving the purpose of optimizing the slot fill rate. In addition, compared with the traditional separate structure, the stator core tooth yoke 23 part structure has a relatively small inner hole size, so the internal separation and splicing can more effectively control the inner hole out-of-roundness, thereby reducing the tooth slot torque of the motor, improving the mechanical effect, improving product quality, and helping to improve service life and reliability;

[0053] When the cover 291 needs to be removed, it is only necessary to push the block 295 into the L-shaped plate 294, and then push the L-shaped plate 294 to leave the first limiting plate 292, and then the cover 291 can be removed. Similarly, during installation, it is only necessary to push the L-shaped plate 294 to pass through the first limiting plate 292, and the block 295 will pop out due to the elastic force of the spring 296, thereby forming a limiting effect on the L-shaped plate 294, and the installation of the cover 291 can be completed. The loading and unloading process is simple and convenient, which is conducive to the maintenance and replacement of various components inside the shell 21.

[0054] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated, comprising a base plate (1) and a motor assembly (2), characterized in that: The motor assembly (2) is arranged on the top of the base plate (1), and a cooling mechanism (3) is arranged on the top of the base plate (1) for cooling the motor assembly (2); The motor assembly (2) comprises a housing (21), the housing (21) being arranged on the top of the base plate (1), the bottom of the housing (21) being fixedly connected to a support seat (22), the support seat (22) being fixedly connected to the top of the base plate (1), the inside of the housing (21) being fixedly connected to a stator core tooth yoke (23), the stator core tooth yoke (23) being fixedly connected to an insulating frame (24), the insulating frame (24) being wound with a coil (25), the inside of the stator core tooth yoke (23) being fixedly connected to an insulating frame (24), the inside of the insulating frame (24) being wound with a coil (25), A stator core slot shoulder (26) is placed on the housing (21), the stator core slot shoulder (26) is placed inside the stator core tooth yoke (23) and matches the stator core tooth yoke (23), a rotor (27) is installed inside the housing (21), the rotor (27) penetrates the stator core slot shoulder (26) and matches the stator core slot shoulder (26), a first rotating shaft (28) and a second rotating shaft (29) are fixedly connected on both sides of the rotor (27), and a cover plate (291) is provided on one side of the housing (21); The cooling mechanism (3) comprises a first annular frame (31) and a second annular frame (32), both of which are fixedly connected to the outside of the shell (21), a cooling groove (33) is provided on the shell (21), the cooling groove (33) is respectively connected to the first annular frame (31) and the second annular frame (32), the cooling groove (33) is distributed around the wall of the shell (21) at intervals, an auxiliary frame (34) is fixedly connected inside the cooling groove (33), and a first cooling pipe (35) is fixedly connected to the bottom of the first annular frame (31). A cooling frame (36) is fixedly connected to the top of the bottom plate (1); a pump body (37) is arranged between the cooling frame (36) and the first cooling pipe (35); an input end of the pump body (37) is fixedly connected to the first cooling pipe (35); an output end of the pump body (37) is fixedly connected to a connecting pipe (38); one end of the connecting pipe (38) is fixedly connected to a side wall of the cooling frame (36); a second cooling pipe (39) is fixedly connected to the front side wall of the cooling frame (36); one end of the second cooling pipe (39) is fixedly connected to the top of the second annular frame (32); The first cooling pipe (35) passes through the support seat (22) and is fixedly connected to the support seat (22); a protective frame (391) is fixedly connected to one side wall of the shell (21); a filter plate (392) is fixedly connected to one side wall of the protective frame (391); the second rotating shaft (29) extends into the interior of the protective frame (391); the exterior of the second rotating shaft (29) is fixedly connected to a first fan blade (393); an extension rod (394) is integrally formed at one end of the second rotating shaft (29); the extension rod (394) passes through the filter plate (392) and is rotatably connected to the filter plate (392); a round rod (395) is rotatably connected to the interior of the protective frame (391); an air inlet hole (396) is opened on one side wall of the shell (21); a dust screen is fixedly connected to the cover plate (291); and a box body (397) is fixedly connected to the bottom of the protective frame (391); The round rod (395) extends into the interior of the box body (397), and the exterior of the round rod (395) is fixedly connected to a second fan blade (398).

2. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated according to claim 1, characterized in that: A transverse plate is fixedly connected to the interior of the protection frame (391), the round rod (395) passes through the transverse plate and is rotatably connected to the transverse plate, a first through slot is formed on one side wall of the box body (397), and a second through slot is formed on the bottom of the box body (397).

3. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated according to claim 1, characterized in that: The extension rod (394) is fixedly connected to the outside with a first bevel gear (399), the top of the round rod (395) is fixedly connected to a second bevel gear (381), the second bevel gear (381) is arranged at the bottom of the first bevel gear (399), and the second bevel gear (381) is meshed with the first bevel gear (399).

4. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated according to claim 1, characterized in that: The extension rod (394) is fixedly connected to a scraper (382) on the outside, and one side of the scraper (382) is in contact with the filter plate (392).

5. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated according to claim 1, characterized in that: A heat conducting plate (383) is fixedly connected to the interior of the cooling frame (36); the heat conducting plates (383) are arranged at equal intervals inside the cooling frame (36); the heat conducting plates (383) penetrate the top wall of the cooling frame (36); and heat dissipation holes are provided on the top wall of the heat conducting plates (383).

6. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated according to claim 1, characterized in that: A first limit plate (292) is fixedly connected to one side wall of the shell (21), and the first limit plates (292) are arranged at equal intervals on the one side wall of the shell (21); a second limit plate (293) is fixedly connected to one side of the cover plate (291), and the second limit plates (293) are arranged at equal intervals on the cover plate (291); an L-shaped plate (294) is arranged between the first limit plate (292) and the second limit plate (293), and a clamping block (295) is slidably connected inside the L-shaped plate (294).

7. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated according to claim 6, characterized in that: The L-shaped plate (294) passes through the first limiting plate (292) and the second limiting plate (293) in sequence, and a spring leaf (296) is fixedly connected inside the L-shaped plate (294), and the spring leaf (296) is fixedly connected to the clamping block (295).

8. A permanent magnet synchronous motor with a slot shoulder and a tooth yoke separated according to claim 7, characterized in that: The clamping block (295) extends out of the L-shaped plate (294), and the bottom of the clamping block (295) fits with the top of the first limiting plate (292).

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