Permanent magnet generator with heat dissipation structure

Abstract

The invention discloses a permanent magnet generator with a heat dissipation structure, and belongs to the technical field of permanent magnet generators. Comprising a machine body, a front shell is fixedly connected to the outer side wall of the machine body, an outer shell is fixedly connected to the right side of the front shell, a rotating column is fixedly connected to the right end of the output end of the machine body, a continuous cam groove is formed in the outer side wall of the rotating column, a rotating cavity is rotationally connected to the outer side wall of the rotating column, and a guide column is fixedly connected to the inner side wall of the rotating cavity; the guide post is connected with the continuous cam groove in a sliding manner; the permanent magnet generator innovatively adopts a liquid cooling-heat conduction-air cooling three-stage composite heat dissipation system, and the heat dissipation efficiency is greatly improved. Rotation of the rotary column drives the hollow column to do reciprocating rectilinear motion through cooperation of the continuous cam groove and the guide column, the piston with the hole is driven to achieve one-way circulation of cooling liquid, and the cooling liquid flows through the cooling device tightly attached to the machine body and fully exchanges heat with the machine body in the rotary sliding process of the concave arc ring.

Description

Technical Field

[0001] The present invention relates to permanent magnet generator technology, and in particular to a permanent magnet generator with a heat dissipation structure. Background Art

[0002] With the rapid development of the new energy industry, permanent magnet generators are widely used in wind power generation, distributed energy and other fields due to their advantages such as high power density and high efficiency. However, during long-term high-load operation, the internal electromagnetic loss and mechanical friction will generate a lot of heat. If it cannot be dissipated in time, it will cause the permanent magnet to demagnetize and the insulation material to age, seriously affecting the power generation efficiency and equipment life. At present, conventional permanent magnet generators mostly use a single heat dissipation method. Air cooling is easily restricted by ambient temperature and ventilation conditions, and the heat dissipation effect is greatly reduced in high temperature and dusty environments; although liquid cooling has a higher heat dissipation efficiency, the traditional coolant circulation system relies on a complex pumping device, which not only increases equipment cost and energy consumption, but also has the risk of liquid leakage and is difficult to maintain. At the same time, the existing heat dissipation structure lacks self-cleaning function, and dust and debris are easily attached to the heat dissipation surface to form an insulation layer, reducing the heat exchange efficiency. In addition, the installation and fixing design of some generators is not reasonable. The vibration generated during operation will affect the stability and reliability of the heat dissipation system, further exacerbating the heat dissipation problem;

[0003] Therefore, there is an urgent need to develop a permanent magnet generator with efficient heat dissipation, self-cleaning function and stable structure to meet the new energy industry's demand for high performance and long life of power generation equipment. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a solution to the problem that the traditional generator single heat dissipation method has low efficiency and is greatly restricted by the environment; another purpose of the present invention is to provide a heat dissipation synchronous automatic dust cleaning function.

[0005] The outer wall of the cam is fixedly provided with a front shell, and the right side of the cam is fixedly connected to the outer shell, and the right end of the output end of the cam is fixedly connected to the rotating column, and the outer wall of the cam is provided with a continuous cam groove, and the outer wall of the cam is rotatably connected to the rotating cavity, and the inner wall of the rotating cavity is fixedly connected to the guide column, and the guide column is slidably connected to the outer wall of the rotating cavity. The cross plate is symmetrically fixedly connected to the cross plate, and the opposite ends of the cross plate are fixedly connected to the hollow column, and the left end of the hollow column is jointly fixedly connected to a cooling device, and the cooling device contacts the outer wall of the cam. The outer wall of the hollow column is provided with a limiting ring, and the outer wall of the limiting ring is fixedly connected to the outer wall of the cam. The inside of the hollow column is slidably connected to the one-way flow cavity, and the right end of the one-way flow cavity is jointly fixedly connected to a hot and cold counter-attack cavity.

[0006] Furthermore, the cooling device includes a hollow arc cavity, the interior of the hollow arc cavity is sealed and slidably connected to a concave arc ring, a plurality of hollow circular cavities are arranged on the left side of the concave arc ring, and the right side of the hollow circular cavity is fixedly connected to a hollow heat dissipation pipe, and the hollow heat dissipation pipes on the right side are fixedly connected to the left side of the concave arc ring.

[0007] Furthermore, the outer wall of the hollow circular cavity on the left is fixedly connected to a top column, the top of the outer wall of the front shell is provided with a guide curved groove, the top of the top column is rotatably connected to a turntable, and the outer wall of the turntable is slidably connected to the inner wall of the guide curved groove.

[0008] Furthermore, the interior of the one-way flow cavity is slidably connected to a piston with a hole, the right side of the piston with a hole is fixedly connected to a hollow long cavity, a square cavity is opened inside the hollow long cavity, and a short column is symmetrically fixedly connected inside the square cavity. The outer wall of the short column is rotatably connected to an inclined baffle with a hole, the inclined surfaces of the two inclined baffles with holes are in contact, and the outer walls of the short column are wound with a torsion spring, the front end of the torsion spring is fixedly connected to the inner wall of the inclined baffle with a hole, and the rear end of the torsion spring is fixedly connected to the outer wall of the short column.

[0009] Furthermore, the right end of the rotating column is fixedly connected to a stirring rod, and the stirring rod extends to the interior of the hot and cold counter-chamber. The stirring rod is located inside the hot and cold counter-chamber and is fixedly connected to a liquid stirring plate. A heat-conducting copper block is fixedly connected to the right side of the interior of the hot and cold counter-chamber, and a heat-dissipating copper column is fixedly connected to the left side of the heat-conducting copper block.

[0010] Furthermore, the right end of the stirring rod is fixedly connected to an extension rod, the right end of the extension rod extends to the right side of the heat-conducting copper block and is fixedly connected to a round block, and the outer side wall of the round block is symmetrically fixedly connected to a heat dissipation blade.

[0011] Furthermore, the outer side wall of the shell is provided with a plurality of heat dissipation and ash leakage holes.

[0012] Furthermore, the inner side walls of the hollow circular cavity are fixedly connected with dust removal soft rings.

[0013] Furthermore, a fixing plate is symmetrically fixedly connected to the outer side wall of the shell, and a fixing hole is opened on the outer side wall of the fixing plate.

[0014] Beneficial Effects: This permanent magnet generator innovatively utilizes a three-stage composite cooling system combining liquid cooling, heat conduction, and air cooling, significantly improving heat dissipation efficiency. The rotation of the rotor, through the interaction of continuous cam grooves and guide columns, drives the hollow column in reciprocating linear motion, driving the perforated piston for unidirectional coolant circulation. The coolant flows through a cooling device tightly fitted to the generator body, exchanging heat with the generator body as it rotates and slides through the concave arcs. Within the hot-cold countercurrent chamber, a stirring rod drives a liquid agitation plate to stir the coolant, disrupting the laminar flow boundaries and enhancing heat transfer. Simultaneously, heat is rapidly transferred between the heat dissipating copper column and the conductive copper block. The high-speed rotation of the heat dissipating blades creates forced convection, accelerating heat dissipation. Dust holes on the outer casing, combined with the airflow from the heat dissipating blades, further enhance heat dissipation. This composite heat dissipation design effectively reduces the generator's operating temperature, preventing performance degradation and equipment damage due to overheating, and significantly improving the equipment's stability and reliability under prolonged, high-load operation.

[0015] The structural design of this generator takes into account both self-cleaning and stable installation, effectively extending the service life of the equipment. In the cooling device, the concave arc ring rotates and slides in the hollow arc cavity, and the dust removal soft ring on its inner wall can promptly remove dust and debris from the surface of the body and the inner wall of the hollow circular cavity, preventing dust accumulation from affecting the heat exchange efficiency and ensuring the long-term and efficient operation of the heat dissipation system. The heat dissipation ash leakage holes on the outer casing not only assist in heat dissipation, but also promptly discharge dust and debris cleaned by the dust removal soft ring to prevent dust from accumulating inside the equipment. In addition, the symmetrically arranged fixing plates are firmly connected to external brackets, bases and other components through fixing holes, providing a solid installation foundation for the generator, effectively reducing vibration during equipment operation, reducing the risk of component wear and loosening due to vibration, ensuring the stability of the heat dissipation system and the overall structure, reducing equipment failures in many aspects, and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic cross-sectional view of the present invention;

[0018] Figure 3 It is a schematic diagram of the overall structure of the cooling device of the present invention;

[0019] Figure 4 It is a schematic cross-sectional view of the cooling device of the present invention;

[0020] Figure 5 It is a schematic cross-sectional view of the hot and cold counter-pressure chamber of the present invention;

[0021] Figure 6 This invention Figure 5 A schematic diagram of the enlarged structure at point A;

[0022] Figure 7This invention Figure 5 A schematic diagram of the enlarged structure at point B;

[0023] Figure 8 It is a schematic cross-sectional structural diagram of the rotary cavity of the present invention;

[0024] Figure 9 It is a schematic diagram of the overall structure of the rotating column of the present invention;

[0025] Figure 10 It is a right side structural schematic diagram of the present invention;

[0026] Figure 11 It is a right side cross-sectional structural schematic diagram of the present invention;

[0027] Figure 12 It is a schematic diagram of the top structure of the present invention.

[0028] In the figure: 1, body; 2, front shell; 3, shell; 4, rotating column; 5, continuous cam groove; 6, rotating cavity; 7, guide column; 8, horizontal plate; 9, hollow column; 10, cooling device; 11, limit ring; 12, one-way flow cavity; 13, hot and cold counter-flow cavity; 14, hollow arc cavity; 15, concave arc ring; 16, hollow circular cavity; 17, hollow heat pipe; 17, hollow heat pipe; 18, top column; 19, guide curved cavity Slot; 20. Turntable; 20. Turntable; 21. Piston with hole; 22. Hollow long cavity; 23. Square cavity; 24. Short column; 25. Inclined baffle with hole; 27. Torsion spring; 28. Stirring rod; 29. ​​Liquid stirring plate; 30. Thermal copper block; 31. Heat dissipation copper column; 32. Extension rod; 33. Round block; 34. Heat dissipation blade; 35. Heat dissipation ash leakage hole; 36. Ash removal soft ring; 37. Fixing plate; 38. Fixing hole. DETAILED DESCRIPTION

[0029] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example

[0031] like Figures 1-10As shown, a permanent magnet generator with a heat dissipation structure is provided, including a body 1, the outer side wall of the body 1 is fixedly connected to a front shell 2, the right side of the front shell 2 is fixedly connected to an outer shell 3, the right end of the output end of the body 1 is fixedly connected to a rotating column 4, the outer side wall of the rotating column 4 is provided with a continuous cam groove 5, the outer side wall of the rotating column 4 is rotatably connected to a rotating cavity 6, the inner side wall of the rotating cavity 6 is fixedly connected to a guide column 7, the guide column 7 is slidably connected to the continuous cam groove 5, the outer side wall of the rotating cavity 6 is symmetrically fixedly connected to a horizontal plate 8, the opposite ends of the horizontal plate 8 are fixedly connected to a hollow column 9, the left end of the hollow column 9 is fixedly connected to a cooling device 10, the cooling device 10 is in contact with the outer side wall of the body 1, the outer side wall of the hollow column 9 is provided with a limiting ring 11, the outer side of the limiting ring 11 The side walls are fixedly connected to the outer wall of the body 1, and the interior of the hollow column 9 is slidably connected to the one-way flow chamber 12. The right end of the one-way flow chamber 12 is fixedly connected to a hot and cold counter-pressure chamber 13. The interior of the one-way flow chamber 12 is slidably connected to a piston 21 with a hole. The right side of the piston 21 with a hole is fixedly connected to a hollow long chamber 22. A square chamber 23 is opened inside the hollow long chamber 22. The interior of the square chamber 23 is symmetrically fixedly connected with a short column 24. The outer wall of the short column 24 is rotatably connected to an inclined baffle 25 with a hole. The inclined surfaces of the two inclined baffles 25 with holes are in contact. The outer wall of the short column 24 is wound with a torsion spring 27. The front end of the torsion spring 27 is fixedly connected to the inner wall of the inclined baffle 25 with holes, and the rear end of the torsion spring 27 is fixedly connected to the outer wall of the short column 24.

[0032] First, coolant flows inside the cooling components of the entire device. Therefore, when the body 1 is operating to generate electricity, the output end drives the rotating column 4 to rotate. The continuous cam groove 5 on the outer wall of the rotating column 4 cooperates with the guide column 7 on the inner wall of the rotating chamber 6, causing the rotating chamber 6 to produce axial reciprocating linear motion, and the horizontal plate 8 and hollow column 9 on the outer wall of the rotating chamber 6 move accordingly. The perforated piston 21 inside the hollow column 9 reciprocates with the hollow column 9. When the hollow column 9 moves to the right, the perforated piston 21 squeezes the liquid inside the hollow column 9. The liquid pressure pushes the inclined perforated baffle 25 to overcome the elastic force of the torsion spring 27 and open. The liquid enters the hot and cold countervailing chamber 13 through the hollow long chamber 22 and the one-way flow chamber 12. When the hollow column 9 moves to the left, the inclined perforated baffle 25 closes under the action of the torsion spring 27, preventing liquid backflow. The external liquid enters the hollow column 9 through the hole of the perforated piston 21, forming a one-way liquid circulation. The cooling device 10 is tightly fitted to the body 1. During the liquid circulation process, the liquid flowing through the cooling device 10 exchanges heat with the heated body 1, absorbs heat, and then enters the hot and cold counter-pressure chamber 13. The heat is dissipated through the hot and cold counter-pressure chamber 13, thereby achieving efficient heat dissipation of the body 1.

[0033] Among them, the left unidirectional flow chamber 12 only allows liquid to flow from right to left, and the right unidirectional flow chamber 12 only allows liquid to flow from left to right. When the rotating chamber 6 drives the hollow column 9 to move to the right, the perforated piston 21 in the right unidirectional flow chamber 12 squeezes the liquid to the right, and the liquid pressure overcomes the elastic force of the torsion spring 27, pushing open the right inclined perforated baffle 25, so that the liquid flows to the left into the hot and cold counter-current chamber 13. At this time, the inclined perforated baffle 25 in the left unidirectional flow chamber 12 remains closed due to the action of the torsion spring 27 to prevent liquid backflow. When the hollow column 9 moves to the left, the perforated piston 21 in the left unidirectional flow chamber 12 squeezes the liquid to the left, and the liquid pressure pushes open the left inclined perforated baffle 25, so that the left liquid flows to the right into the hot and cold counter-current chamber 13. At the same time, the inclined perforated baffle 25 of the right unidirectional flow chamber 12 is closed, and the coolant is sucked into the hollow column 9 to the right through the hole of the right perforated piston 21.

[0034] In this embodiment, the cooling device 10 includes a hollow arc cavity 14, the interior of the hollow arc cavity 14 is sealed and slidably connected to a concave arc ring 15, a plurality of hollow circular cavities 16 are provided on the left side of the concave arc ring 15, the right side of the hollow circular cavity 16 is fixedly connected to a hollow heat dissipation pipe 17, the right hollow heat dissipation pipe 17 is fixedly connected to the left side of the concave arc ring 15, the outer side wall of the left hollow circular cavity 16 is fixedly connected to a top column 18, the top of the outer side wall of the front shell 2 is provided with a guide curved groove 19, the top of the top column 18 is rotatably connected to a turntable 20, the outer side wall of the turntable 20 is slidably connected to the inner side wall of the guide curved groove 19, and the inner side walls of the hollow circular cavity 16 are fixedly connected to a dust removal soft ring 36;

[0035] When the body 1 is in operation, the rotating column 4 rotates. Through the interaction of the continuous cam groove 5 and the guide column 7, the rotating column 4 causes the rotating cavity 6 and the connected hollow column 9 to perform reciprocating linear motion, driving the perforated piston 21 to promote unidirectional circulation of the liquid within the hollow column 9. In the cooling device 10, the hollow column 9 drives the concave arc ring 15 to slide sealedly within the hollow arc cavity 14. Simultaneously, the rotating disk 20 at the top of the top column 18 slides along the guide groove 19 on the front housing 2, causing the concave arc ring 15 to rotate during the sliding process. The liquid flows through the hollow circular cavity 16 into the hollow heat dissipation pipe 17, where it fully contacts and exchanges heat with the surface of the body 1. After absorbing heat, it flows back into the circulation system through the hollow elongated cavity 22 on the other side. During this process, the rotation of the concave arc ring 15 cooperates with the dust removal soft ring 36 to promptly remove dust and debris on the inner wall of the hollow circular cavity 16 and the contact surface with the body 1, avoiding affecting the heat exchange efficiency and ensuring that the liquid continuously and efficiently takes away the heat generated by the body 1, and finally discharges the heat through the hot and cold counter-pressure cavity 13, thereby achieving effective heat dissipation of the generator body 1.

[0036] In this embodiment, the right end of the rotating column 4 is fixedly connected to a stirring rod 28, which extends into the interior of the hot and cold counter-chamber 13. The stirring rod 28 is located inside the hot and cold counter-chamber 13 and is fixedly connected to a liquid stirring plate 29. A heat-conducting copper block 30 is fixedly connected to the right side of the hot and cold counter-chamber 13. A heat-dissipating copper column 31 is fixedly connected to the left side of the heat-conducting copper block 30. The right end of the stirring rod 28 is fixedly connected to an extension rod 32. The right end of the extension rod 32 extends to the right side of the heat-conducting copper block 30 and is fixedly connected to a round block 33. The outer wall of the round block 33 is symmetrically fixedly connected to a heat-dissipating blade 34.

[0037] When the generator is working, the body 1 drives the rotating column 4 to rotate. The rotating column 4 makes the rotating cavity 6 drive the hollow column 9 to do reciprocating motion through the cooperation of the continuous cam groove 5 and the guide column 7. The piston 21 with a hole forms a pressure difference in the hollow column 9, forcing the coolant to enter the cooling device 10 through the hollow heat dissipation pipe 17. The concave arc ring 15 rotates and slides under the constraints of the guide groove 19 and the top column 18. The dust removal soft ring 36 on its inner wall removes dust on the surface of the body 1 to ensure heat conduction efficiency; the stirring rod 28 at the right end of the rotating column 4 rotates synchronously with the main shaft, driving the liquid stirring plate 29 to mechanically stir the high-temperature coolant in the cold and hot counter-chamber 13, destroying the laminar flow edge of the liquid. The turbulence is enhanced, and at the same time, the coolant is in full contact with the heat dissipation copper column 31 to transfer the heat to the heat-conducting copper block 30; the extension rod 32 drives the round block 33 and the heat dissipation blade 34 to rotate at high speed, forming a negative pressure area on the right side of the heat-conducting copper block 30 to accelerate the air flow, the heat dissipation copper column 31 diffuses the heat into the surrounding air, and the rotating heat dissipation blade 34 further improves the heat dissipation efficiency through forced convection. The system realizes the three-level heat dissipation of "liquid cooling-heat conduction-air cooling" through mechanical linkage. The coolant circulates to take away the heat, the heat-conducting copper component expands the heat dissipation area, and the rotating blades strengthen the air convection, and finally the heat is efficiently dissipated to the environment to ensure the stable operation of the generator under high load.

[0038] In this embodiment, the outer wall of the housing 3 is provided with a plurality of heat dissipation and ash leakage holes 35, and the outer wall of the housing 3 is symmetrically fixedly connected with a fixing plate 37, and the outer wall of the fixing plate 37 is provided with a fixing hole 38;

[0039] During generator operation, the multiple heat dissipation holes 35 on the housing 3 play a key role. They counteract heat transfer from the hot and cold chambers 13 via the heat dissipation copper pillars 31 and the conductive copper block 30. Rotating heat dissipation blades 34 accelerate air flow, enhancing heat dissipation. These holes also allow dust and debris removed by the dust removal ring 36 to be naturally discharged, preventing accumulation that could affect heat dissipation. Symmetrically arranged fixing plates 37 connect to external components such as brackets and bases through fixing holes 38, providing a secure mounting base for the generator, ensuring structural stability during operation and minimizing the impact of vibration and other factors on the cooling system and overall performance.

[0040] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A permanent magnet generator with a heat dissipation structure, comprising a body (1), characterized in that: The outer side wall of the body (1) is fixedly connected to the front shell (2), the right side of the front shell (2) is fixedly connected to the outer shell (3), the right end of the output end of the body (1) is fixedly connected to the rotating column (4), the outer side wall of the rotating column (4) is provided with a continuous cam groove (5), the outer side wall of the rotating column (4) is rotatably connected to the rotating cavity (6), the inner side wall of the rotating cavity (6) is fixedly connected to the guide column (7), the guide column (7) is slidably connected to the continuous cam groove (5), the outer side wall of the rotating cavity (6) is symmetrically fixedly connected to the horizontal plate (8), the horizontal plate ( The opposite ends of the hollow columns (8) are fixedly connected with hollow columns (9), the left ends of the hollow columns (9) are fixedly connected with a cooling device (10), the cooling device (10) is in contact with the outer wall of the body (1), the outer walls of the hollow columns (9) are provided with limiting rings (11), the outer walls of the limiting rings (11) are fixedly connected with the outer walls of the body (1), the interiors of the hollow columns (9) are slidably connected with one-way flow cavities (12), and the right ends of the one-way flow cavities (12) are fixedly connected with a cold-hot counter-pressure cavity (13).

2. The permanent magnet generator with a heat dissipation structure according to claim 1, characterized in that: The cooling device (10) comprises a hollow arc cavity (14), the interior of the hollow arc cavity (14) is sealed and slidably connected to a concave arc ring (15), a plurality of hollow circular cavities (16) are provided on the left side of the concave arc ring (15), the right side of each of the hollow circular cavities (16) is fixedly connected to a hollow heat dissipation pipe (17), and the hollow heat dissipation pipe (17) on the right side is fixedly connected to the left side of the concave arc ring (15).

3. The permanent magnet generator with a heat dissipation structure according to claim 2, characterized in that: The outer side wall of the hollow circular cavity (16) on the left side is fixedly connected with a top column (18), the top end of the outer side wall of the front shell (2) is provided with a guide curved groove (19), the top end of the top column (18) is rotatably connected with a turntable (20), and the outer side wall of the turntable (20) is slidably connected with the inner side wall of the guide curved groove (19).

4. The permanent magnet generator with a heat dissipation structure according to claim 1, characterized in that: The inside of the one-way flow cavity (12) is slidably connected to a piston with a hole (21), the right side of the piston with a hole (21) is fixedly connected to a hollow long cavity (22), the inside of the hollow long cavity (22) is provided with a square cavity (23), the inside of the square cavity (23) is symmetrically fixedly connected to a short column (24), the outer wall of the short column (24) is rotatably connected to an inclined baffle with a hole (25), the inclined surfaces of the two inclined baffles with a hole (25) are in contact, the outer wall of the short column (24) is wound with a torsion spring (27), the front end of the torsion spring (27) is fixedly connected to the inner wall of the inclined baffle with a hole (25), and the rear end of the torsion spring (27) is fixedly connected to the outer wall of the short column (24).

5. The permanent magnet generator with a heat dissipation structure according to claim 1, characterized in that: The right end of the rotating column (4) is fixedly connected to a stirring rod (28), and the stirring rod (28) extends to the interior of the hot and cold counter-chamber (13). The stirring rod (28) is located inside the hot and cold counter-chamber (13) and is fixedly connected to a liquid stirring plate (29). The right side of the interior of the hot and cold counter-chamber (13) is fixedly connected to a heat-conducting copper block (30), and the left side of the heat-conducting copper block (30) is fixedly connected to a heat dissipation copper column (31).

6. The permanent magnet generator with a heat dissipation structure according to claim 5, characterized in that: The right end of the stirring rod (28) is fixedly connected to an extension rod (32), the right end of the extension rod (32) extends to the right side of the heat-conducting copper block (30) and is fixedly connected to a round block (33), and the outer side wall of the round block (33) is symmetrically fixedly connected to a heat dissipation blade (34).

7. The permanent magnet generator with a heat dissipation structure according to claim 1, characterized in that: The outer side wall of the housing (3) is provided with a plurality of heat dissipation and ash leakage holes (35).

8. The permanent magnet generator with a heat dissipation structure according to claim 2, characterized in that: The inner side walls of the hollow circular cavity (16) are fixedly connected with a dust removal soft ring (36).

9. The permanent magnet generator with a heat dissipation structure according to claim 1, characterized in that: A fixing plate (37) is symmetrically fixedly connected to the outer side wall of the housing (3), and a fixing hole (38) is provided on the outer side wall of the fixing plate (37).

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