Motor cooling structure and permanent magnet synchronous motor

Abstract

This invention relates to the field of energy-saving electric motor technology, specifically to a motor cooling structure and a permanent magnet synchronous motor. The structure includes a permanent magnet synchronous motor body and a motor rotor rotatably mounted within the motor body. One end of the motor rotor is fixedly connected to a rotating rod, and one end of the rotating rod is fixedly connected to a first rotating disk. Multiple annularly distributed heat dissipation blades are fixedly connected to the outer wall of the first rotating disk. A first square cylinder is fixedly connected to the outer wall of the first rotating disk, and a second square cylinder is slidably mounted on the inner wall of the first square cylinder. When the second rotating disk rotates, it intermittently strikes a heat dissipation and dustproof filter. Dust intercepted in the multiple inclined holes of the heat dissipation and dustproof filter is vibrated and falls off. Because the inclined holes are oriented outwards, the dislodged dust falls outwards, thus achieving continuous and automated cleaning of the heat dissipation and dustproof filter.

Description

Technical Field

[0001] This invention relates to the field of energy-saving electric motor technology, specifically to an electric motor cooling structure and a permanent magnet synchronous motor. Background Technology

[0002] Energy-saving motors have become a core component for achieving green and low-carbon development in fields such as industrial equipment, new energy vehicles, and rail transportation. Permanent magnet synchronous motors, with their high efficiency, high power density, good dynamic performance, and stability, have become the mainstream technology for energy-saving motors and are widely used in various high-efficiency and energy-saving drive scenarios.

[0003] Currently, permanent magnet synchronous motors on the market generate significant heat due to their high power performance, requiring a cooling system for continuous and stable operation. Most current cooling systems for permanent magnet synchronous motors are forced air cooling systems, with a cooling fan at the rear of the motor to expel the heat generated during operation. However, because forced air cooling systems require continuous air exchange, dust and debris accumulate inside the motor over time, leading to dust buildup and poor heat dissipation. Dust filters are typically installed at the rear of the motor, but these also require regular cleaning; otherwise, dust buildup will further reduce cooling efficiency. Considering that some synchronous motors are installed in confined spaces, making regular cleaning inconvenient, a new motor cooling structure and permanent magnet synchronous motor solution are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a motor cooling structure and a permanent magnet synchronous motor to solve the problem mentioned in the background art that existing permanent magnet synchronous motors are inconvenient to clean the heat dissipation filter when the installation position is narrow.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a motor cooling structure and a permanent magnet synchronous motor, comprising a permanent magnet synchronous motor body and a motor rotor rotatably installed within the permanent magnet synchronous motor body. One end of the motor rotor is fixedly connected to a rotating rod, and one end of the rotating rod is fixedly connected to a first rotating disk. A plurality of annularly distributed heat dissipation blades are fixedly connected to the outer wall of the first rotating disk. A first square cylinder is fixedly connected to the outer wall of the first rotating disk. A second square cylinder is slidably installed on the inner wall of the first square cylinder. A fixing plate is fixedly connected to the outer wall of the second square cylinder. A plurality of evenly distributed cleaning brushes are fixedly connected to the fixing plate. The cleaning brushes are set at an inclined angle. A striking block is fixedly connected to the fixing plate. The striking block is set as a hemispherical block.

[0006] Preferably, a heat dissipation and dustproof filter is fixedly connected to the outer wall of the permanent magnet synchronous motor body, a fixed frame is fixedly connected to the heat dissipation and dustproof filter, the inner wall of the fixed frame is connected to the inner wall of the permanent magnet synchronous motor body, and a second abutment block is fixedly connected to the inner wall of the fixed frame, the second abutment block being configured as a hemispherical shape;

[0007] The permanent magnet synchronous motor body is fixedly mounted with a heat dissipation fan-shaped shell, and a second rotating disk is fixedly connected to one end of the second square cylinder. Multiple first abutment blocks are fixedly connected to the second rotating disk in a ring-shaped manner, and the first abutment blocks are set as hemispherical blocks.

[0008] Preferably, the first square tube has a storage groove, which is a groove with a square inner contour. A return spring is fixedly connected to the inner wall of the storage groove. One end of the return spring is fixedly connected to the outer wall of the second square tube. The second square tube is slidably connected to the inner wall of the storage groove. The outer contour of the second square tube matches the inner contour of the storage groove.

[0009] Preferably, a connecting rod is fixedly connected to the outer wall of the second square cylinder, and an arc-shaped scraper is fixedly connected to one end of the connecting rod. The arc-shaped outer contour of the arc-shaped scraper matches the inner contour of the permanent magnet synchronous motor body. A dust discharge groove for discharging dust is provided on the permanent magnet synchronous motor body.

[0010] Preferably, a motor stator core is fixedly installed on the inner wall of the permanent magnet synchronous motor body, a motor stator winding is fixedly installed on the inner wall of the motor stator core, and the motor rotor is rotatably installed on the inner wall of the motor stator winding.

[0011] Preferably, the other end of the motor rotor is fixedly connected to a motor shaft, which is rotatably mounted on the permanent magnet synchronous motor body, and the motor shaft has a mating groove.

[0012] Preferably, a permanent magnet synchronous motor end cover is fixedly connected to the outer wall of the permanent magnet synchronous motor body, and the permanent magnet synchronous motor end cover is provided with a plurality of heat dissipation holes for heat dissipation.

[0013] Preferably, a motor terminal block is fixedly installed on the main body of the permanent magnet synchronous motor, and the motor terminal block has multiple wiring holes and multiple wire pressing thread holes.

[0014] Preferably, the heat dissipation and dustproof filter screen has a plurality of evenly distributed heat dissipation oblique holes, which are configured as inclined holes.

[0015] Preferably, the permanent magnet synchronous motor body has two support seats fixedly connected to it, and the support seats have mounting bases fixedly connected to them. The mounting bases have multiple mounting holes for fixing the position.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In this invention, when the second rotating disk rotates, it can intermittently tap the heat dissipation and dust prevention filter. The dust intercepted in the multiple heat dissipation inclined holes on the heat dissipation and dust prevention filter is shaken off. Since the heat dissipation inclined holes are set as inclined holes with the inclined direction facing the outside, the dust shaken off falls to the outside, thus completing the continuous and automated cleaning of the heat dissipation and dust prevention filter.

[0018] 2. In this invention, during the tapping process, the cleaning brush scrapes the surface of the heat dissipation and dustproof filter. During the scraping process, as the first contact block and the outer wall of the second contact block come into contact, the cleaning brush will also tap the outer wall of the heat dissipation and dustproof filter, shaking off the dust adhering to the outer wall of the cleaning brush. The shaken-off dust falls from the ash discharge trough onto the outside of the permanent magnet synchronous motor body.

[0019] 3. In this invention, the forward and backward movement of the second square cylinder, along with the synchronous forward and backward movement of the arc-shaped scraper, can increase the scraping range of the arc-shaped scraper on the inner wall of the permanent magnet synchronous motor body, further cleaning the dust inside the permanent magnet synchronous motor body. The reduction in the amount of dust inside the permanent magnet synchronous motor body can increase the heat conduction efficiency of the heat dissipation fan-shaped shell. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall rear view structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the fixed frame of the present invention;

[0024] Figure 5 This is a further cross-sectional structural diagram of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 This is a schematic diagram of the second square tube and its surrounding structure according to the present invention.

[0027] In the attached diagram, the components represented by each number are as follows:

[0028] 1. Main body of permanent magnet synchronous motor; 2. Support base; 3. Mounting base; 4. Mounting hole; 5. Heat dissipation fan-shaped outer shell; 6. Permanent magnet synchronous motor end cover; 7. Heat dissipation hole; 8. Motor terminal block; 9. Wiring hole; 10. Threaded wire hole; 11. Heat dissipation and dustproof filter; 12. Fixing frame; 13. Heat dissipation oblique hole; 14. Motor stator core; 15. Motor stator winding; 16. Motor rotor; 17. Motor shaft; 18. Connecting groove; 19. Rotating rod; 20. First rotating disk; 21. Heat dissipation blade; 22. First square cylinder; 23. Storage groove; 24. Return spring; 25. Second square cylinder; 26. Fixing plate; 27. Cleaning brush; 28. Impact block; 29. ​​Connecting rod; 30. Arc-shaped scraper; 31. Second rotating disk; 32. First contact block; 33. Second contact block; 34. Ash discharge trough. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This invention provides a technical solution: such as Figure 1 - Figure 7 The diagram illustrates a motor cooling structure and a permanent magnet synchronous motor, comprising a permanent magnet synchronous motor body 1 and a motor rotor 16 rotatably mounted within the permanent magnet synchronous motor body 1. One end of the motor rotor 16 is fixedly connected to a rotating rod 19, and one end of the rotating rod 19 is fixedly connected to a first rotating disk 20. The outer wall of the first rotating disk 20 is fixedly connected to a plurality of annularly distributed heat dissipation blades 21. The outer wall of the first rotating disk 20 is fixedly connected to a first square cylinder 22. The inner wall of the first square cylinder 22 is slidably mounted to a second square cylinder 25. The outer wall of the second square cylinder 25 is fixedly connected to a fixing plate 26. The fixing plate 26 is fixedly connected to a plurality of evenly distributed cleaning brushes 27, which are set at an inclined angle. The fixing plate 26 is fixedly connected to a striking block 28, which is set as a hemispherical block.

[0031] A heat dissipation and dustproof filter 11 is fixedly connected to the outer wall of the permanent magnet synchronous motor body 1. A fixed frame 12 is fixedly connected to the heat dissipation and dustproof filter 11. The inner wall of the fixed frame 12 is connected to the inner wall of the permanent magnet synchronous motor body 1. A second abutment block 33 is fixedly connected to the inner wall of the fixed frame 12. The second abutment block 33 is set in a hemispherical shape.

[0032] A heat dissipation fan-shaped outer shell 5 is fixedly installed on the main body 1 of the permanent magnet synchronous motor. A second rotating disk 31 is fixedly connected to one end of the second square cylinder 25. Multiple first contact blocks 32 distributed in a ring are fixedly connected to the second rotating disk 31. The first contact blocks 32 are set as hemispherical blocks.

[0033] The first square tube 22 has a storage groove 23, which is a groove with a square inner contour. A return spring 24 is fixedly connected to the inner wall of the storage groove 23. One end of the return spring 24 is fixedly connected to the outer wall of the second square tube 25. The second square tube 25 is slidably connected to the inner wall of the storage groove 23. The outer contour of the second square tube 25 matches the inner contour of the storage groove 23.

[0034] A connecting rod 29 is fixedly connected to the outer wall of the second square cylinder 25. An arc-shaped scraper 30 is fixedly connected to one end of the connecting rod 29. The arc-shaped outer contour of the arc-shaped scraper 30 matches the inner contour of the permanent magnet synchronous motor body 1. A dust discharge trough 34 for discharging dust is provided on the permanent magnet synchronous motor body 1.

[0035] The inner wall of the permanent magnet synchronous motor body 1 is fixedly installed with a motor stator core 14, the inner wall of the motor stator core 14 is fixedly installed with a motor stator winding 15, and the motor rotor 16 is rotatably installed on the inner wall of the motor stator winding 15.

[0036] The other end of the motor rotor 16 is fixedly connected to the motor shaft 17, which is rotatably mounted on the permanent magnet synchronous motor body 1. The motor shaft 17 has a mating groove 18.

[0037] The outer wall of the permanent magnet synchronous motor body 1 is fixedly connected to a permanent magnet synchronous motor end cover 6, and the permanent magnet synchronous motor end cover 6 is provided with multiple heat dissipation holes 7 for heat dissipation.

[0038] A motor terminal block 8 is fixedly installed on the main body 1 of the permanent magnet synchronous motor. The motor terminal block 8 has multiple wiring holes 9 and multiple wire thread holes 10.

[0039] The heat dissipation and dust prevention filter 11 has multiple evenly distributed heat dissipation inclined holes 13. The heat dissipation inclined holes 13 are set in an inclined shape. The dust intercepted in the multiple heat dissipation inclined holes 13 on the heat dissipation and dust prevention filter 11 is shaken off. Since the heat dissipation inclined holes 13 are set in an inclined shape, the inclined direction faces outward, and the dust shaken off falls outward, completing the continuous and automatic cleaning of the heat dissipation and dust prevention filter 11.

[0040] Two support bases 2 are fixedly connected to the main body 1 of the permanent magnet synchronous motor. A mounting base 3 is fixedly connected to the support base 2. The mounting base 3 has multiple mounting holes 4 for fixing the position.

[0041] Working principle: When using this motor cooling structure and permanent magnet synchronous motor, firstly, during motor installation, after placing the mounting base 3 in the target installation position, multiple bolts are threaded through the mounting holes 4 and the mounting grooves at the target position to fix the position of the permanent magnet synchronous motor body 1 and the mounting base 3. Then, the matching nuts are screwed onto the bolts for reinforcement, ensuring that the permanent magnet synchronous motor body 1 and the mounting base 3 will not slip off during operation after installation. It can be connected to various external instruments through the mating groove 18 opened on the motor shaft 17.

[0042] The uneven, fan-shaped heat dissipation shell 5 on the permanent magnet synchronous motor body 1 can greatly increase the heat dissipation area of ​​the permanent magnet synchronous motor body 1 shell and further optimize the heat dissipation efficiency.

[0043] Connect the power cord and control cord to the wiring hole 9 on the motor terminal block 8. Then, tighten the wire clamping bolt into the wire clamping thread hole 10 and use the end of the wire clamping bolt to clamp and fix the wiring in the wiring hole 9.

[0044] During motor operation, when the motor rotor 16 rotates at high speed, it can drive the end rod 19 to rotate synchronously. When the rod 19 rotates, it drives the first rotating disk 20 to rotate synchronously. When the first rotating disk 20 rotates, it drives the multiple annularly distributed heat dissipation blades 21 on the outer wall to rotate synchronously at high speed. When the heat dissipation blades 21 rotate, they generate airflow, which blows the hot air inside the permanent magnet synchronous motor body 1 toward the heat dissipation and dustproof filter 11. The hot airflow is discharged to the outside through the multiple heat dissipation inclined holes 13 opened on the heat dissipation and dustproof filter 11. When the hot air is discharged, the ambient temperature air is affected by the rotating heat dissipation blades 21 and enters the permanent magnet synchronous motor body 1 through the heat dissipation holes 7 to cool the permanent magnet synchronous motor body 1, thus completing the heat dissipation and cooling of the temperature inside the permanent magnet synchronous motor body 1.

[0045] When the first rotating disk 20 rotates, it causes the first square cylinder 22 to rotate synchronously. Since the inner wall of the first square cylinder 22 has a square storage groove 23, its rotation causes the second square cylinder 25, which is also square, to rotate synchronously. When the second square cylinder 25 rotates, it causes the second rotating disk 31 at its end to rotate synchronously. As the second rotating disk 31 rotates, it causes multiple first contact blocks 32 to rotate in a circular motion. The circular rotation trajectory of the first contact blocks 32 causes them to contact the outer wall of the second contact blocks 33. This causes the first contact blocks 32 to be pressed against the hemispherical outer wall of the second contact blocks 33, resulting in the first contact blocks 32, along with the second rotating disk 31 and the second square cylinder 25, being forced and moving closer to the storage groove 23. During this movement, the second square cylinder 25 compresses the return spring 24, taut and storing energy. When a single first contact block 32 continues its circular movement, the first contact block... 32 releases the contact state with the second contact block 33. At this time, the first contact block 32, the second rotating disk 31, and the second square cylinder 25 are no longer under force. At this time, the return spring 24 rebounds from the stored tension state. The return spring 24 moves the second square cylinder 25 back to its original position. The movement of the second square cylinder 25 moves the outer wall fixing plate 26 and the striking block 28 synchronously, so that the striking block 28 strikes the outer wall of the heat dissipation and dustproof filter 11. The striking causes the heat dissipation and dustproof filter 11 to vibrate. The first contact block 32 is arranged in a ring, so it can intermittently strike the heat dissipation and dustproof filter 11 when the second rotating disk 31 rotates. The dust intercepted in the multiple heat dissipation inclined holes 13 on the heat dissipation and dustproof filter 11 is vibrated and falls off. Since the heat dissipation inclined holes 13 are set as inclined holes with the inclined direction facing outward, the dust that is vibrated and falls off falls to the outside, completing the continuous and automated cleaning of the heat dissipation and dustproof filter 11.

[0046] When the second square cylinder 25 rotates, it will drive the fixing plate 26 and the cleaning brush 27 to rotate synchronously. At this time, the fixing plate 26 and the cleaning brush 27 move in a circle, so that the cleaning brush 27 scrapes the surface of the heat dissipation and dust prevention filter 11. During the scraping process, as the first contact block 32 and the outer wall of the second contact block 33 come into contact, the cleaning brush 27 will also knock on the outer wall of the heat dissipation and dust prevention filter 11, shaking off the dust adhering to the outer wall of the cleaning brush 27. The dust falls from the ash discharge trough 34 to the outside of the permanent magnet synchronous motor body 1.

[0047] When the second square cylinder 25 rotates, it also rotates along with the connecting rod 29 on the outer wall and the arc-shaped scraper 30. At this time, the connecting rod 29 and the arc-shaped scraper 30 move in a circular motion, causing the arc-shaped scraper 30 to scrape along the inner wall of the permanent magnet synchronous motor body 1. This scrapes away some fine dust particles that have entered the permanent magnet synchronous motor body 1 through the heat dissipation and dustproof filter 11 from the inner wall of the permanent magnet synchronous motor body 1. The fallen dust particles fall out of the ash discharge trough 34. As the first contact block 32 and the second contact block 33 collide, that is, as the second square cylinder 25 moves back and forth, the arc-shaped scraper 30 moves back and forth synchronously, which can increase the scraping range of the arc-shaped scraper 30 on the inner wall of the permanent magnet synchronous motor body 1, further cleaning the dust inside the permanent magnet synchronous motor body 1. The reduction of the amount of dust inside the permanent magnet synchronous motor body 1 can improve the heat conduction efficiency of the heat dissipation fan-shaped outer shell 5.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor cooling structure and a permanent magnet synchronous motor, comprising a permanent magnet synchronous motor body (1) and a motor rotor (16) rotatably mounted within the permanent magnet synchronous motor body (1), characterized in that: One end of the motor rotor (16) is fixedly connected to a rotating rod (19), and one end of the rotating rod (19) is fixedly connected to a first rotating disk (20). The outer wall of the first rotating disk (20) is fixedly connected to a plurality of annularly distributed heat dissipation blades (21). The outer wall of the first rotating disk (20) is fixedly connected to a first square cylinder (22). The inner wall of the first square cylinder (22) is slidably installed with a second square cylinder (25). The outer wall of the second square cylinder (25) is fixedly connected to a fixing plate (26). The fixing plate (26) is fixedly connected to a plurality of evenly distributed cleaning brushes (27). The cleaning brushes (27) are set at an inclined angle. The fixing plate (26) is fixedly connected to a striking block (28). The striking block (28) is set as a hemispherical block.

2. The motor cooling structure and permanent magnet synchronous motor according to claim 1, characterized in that: The outer wall of the permanent magnet synchronous motor body (1) is fixedly connected to a heat dissipation and dustproof filter (11), and a fixed frame (12) is fixedly connected to the heat dissipation and dustproof filter (11). The inner wall of the fixed frame (12) is connected to the inner wall of the permanent magnet synchronous motor body (1), and a second abutment block (33) is fixedly connected to the inner wall of the fixed frame (12). The second abutment block (33) is set in a hemispherical shape. The permanent magnet synchronous motor body (1) is fixedly installed with a heat dissipation fan-shaped shell (5), and a second rotating disk (31) is fixedly connected to one end of the second square cylinder (25). A plurality of first contact blocks (32) distributed in a ring are fixedly connected to the second rotating disk (31), and the first contact blocks (32) are set as hemispherical blocks.

3. The motor cooling structure and permanent magnet synchronous motor according to claim 1, characterized in that: The first square tube (22) has a storage groove (23) on it. The storage groove (23) is a groove with a square inner contour. A reset spring (24) is fixedly connected to the inner wall of the storage groove (23). One end of the reset spring (24) is fixedly connected to the outer wall of the second square tube (25). The second square tube (25) is slidably connected to the inner wall of the storage groove (23). The outer contour of the second square tube (25) matches the inner contour of the storage groove (23).

4. The motor cooling structure and permanent magnet synchronous motor according to claim 1, characterized in that: A connecting rod (29) is fixedly connected to the outer wall of the second square cylinder (25). An arc-shaped scraper (30) is fixedly connected to one end of the connecting rod (29). The arc-shaped outer contour of the arc-shaped scraper (30) matches the inner wall contour of the permanent magnet synchronous motor body (1). A dust discharge groove (34) for discharging dust is opened on the permanent magnet synchronous motor body (1).

5. The motor cooling structure and permanent magnet synchronous motor according to claim 1, characterized in that: The inner wall of the permanent magnet synchronous motor body (1) is fixedly installed with a motor stator core (14), the inner wall of the motor stator core (14) is fixedly installed with a motor stator winding (15), and the motor rotor (16) is rotatably installed on the inner wall of the motor stator winding (15).

6. The motor cooling structure and permanent magnet synchronous motor according to claim 1, characterized in that: The other end of the motor rotor (16) is fixedly connected to a motor shaft (17), which is rotatably mounted on the permanent magnet synchronous motor body (1). A docking groove (18) is provided on the motor shaft (17).

7. The motor cooling structure and permanent magnet synchronous motor according to claim 1, characterized in that: The permanent magnet synchronous motor body (1) is fixedly connected to the outer wall of the permanent magnet synchronous motor end cover (6), and the permanent magnet synchronous motor end cover (6) is provided with a plurality of heat dissipation holes (7) for heat dissipation.

8. The motor cooling structure and permanent magnet synchronous motor according to claim 1, characterized in that: The permanent magnet synchronous motor body (1) is fixedly installed with a motor terminal block (8), and the motor terminal block (8) is provided with multiple wiring holes (9) and multiple wire thread holes (10).

9. The motor cooling structure and permanent magnet synchronous motor according to claim 2, characterized in that: The heat dissipation and dustproof filter (11) has a plurality of evenly distributed heat dissipation inclined holes (13), and the heat dissipation inclined holes (13) are set as inclined holes.

10. The motor cooling structure and permanent magnet synchronous motor according to claim 1, characterized in that: The permanent magnet synchronous motor body (1) is fixedly connected to two support seats (2), and the support seats (2) are fixedly connected to an mounting base (3). The mounting base (3) has multiple mounting holes (4) for fixing the position.

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