A heat dissipation structure of a permanent magnet generator

Abstract

The utility model relates to power generation equipment technical field discloses a kind of permanent magnet generator heat dissipation structure, including heat dissipation seat, the top of heat dissipation seat is equipped with mounting slot, the inner wall of mounting slot is fixedly installed with permanent magnet generator, the side surface of heat dissipation seat is fixedly connected with heat exchange shell, limit component is arranged on heat exchange shell, the limit component includes backplate, the front opening of heat exchange shell is arranged, the back of backplate is contacted with the front opening of heat exchange shell, the back of backplate is fixedly connected with two dust screen plates. In the utility model, limit component is set, backplate and dust screen plate are slid into heat exchange shell, plug block is automatically fixed under the action of spring, when disassembling, pinch moving pressing plate, pull handle, backplate and dust screen plate can be taken out, maintenance efficiency is greatly improved, reliable fixation: plug block and insertion slot are closely matched, dust screen plate is stably fixed, prevent its loosening and falling off, continuously filter air, guarantee equipment stable operation.

Description

Technical Field

[0001] This utility model relates to the field of power generation equipment technology, and in particular to a heat dissipation structure for a permanent magnet generator. Background Technology

[0002] A common air-cooled heat dissipation structure involves installing heat dissipation fins on the casing of the permanent magnet generator and mounting a fan on the rotor shaft. When the generator is running, the rotor drives the fan to rotate, causing air to flow over the heat dissipation fins. This accelerated airflow carries away the heat from the generator casing. The principle is based on convective heat transfer, transferring the heat generated inside the generator to the surrounding environment. This heat dissipation structure is simple, low-cost, and suitable for permanent magnet generators with lower power output and operating temperatures.

[0003] Dust filters are typically installed at the air inlet and heat outlet to prevent external dust from entering the permanent magnet generator. These filters are usually secured with nuts. The installation process requires workers to precisely align the dust filter with the heat exchanger shell and then tighten it with multiple nuts. Each nut must be manually tightened to ensure a secure installation.

[0004] Existing technologies require workers to use wrenches and other tools to unscrew nuts one by one when cleaning or replacing dust filters. This process is cumbersome and time-consuming, and the difficulty is even greater in confined spaces or complex equipment layouts. This complex installation and disassembly process not only wastes a lot of manpower and time but may also damage the equipment due to improper operation. Therefore, a permanent magnet generator heat dissipation structure is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a heat dissipation structure for a permanent magnet generator, which aims to improve the problems of cumbersome installation and disassembly of dustproof nets and their unstable fixing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a heat dissipation structure for a permanent magnet generator, including a heat dissipation base, an installation groove on the top of the heat dissipation base, a permanent magnet generator fixedly installed on the inner wall of the installation groove, a heat exchange shell fixedly connected to the side of the heat dissipation base, and a limit component provided on the heat exchange shell.

[0007] The limiting component includes a back plate, with an opening on the front of the heat exchange shell. The back of the back plate contacts the opening on the front of the heat exchange shell. Two dustproof mesh plates are fixedly connected to the back of the back plate, and the two dustproof mesh plates are slidably connected to the top and bottom of the heat exchange shell, respectively. A handle is fixedly connected to the front of the back plate, and a pressure plate is slidably connected to the inner side of the handle. A rope is fixedly connected to the back of the pressure plate. Movable slots are provided on both sides of the back plate. The other end of the rope moves through the front of the back plate and extends into the movable slot. An insert is fixedly connected to the other end of the rope. The surface of the insert is slidably connected to the inner wall of the movable slot. A first spring is sleeved on the surface of the rope. One side of the insert is fixedly connected to one end of the first spring, and the other side of the insert abuts against the inner wall of the slot.

[0008] As a further description of the above technical solution: a dust scraping assembly is provided above the heat dissipation shell. The dust scraping assembly includes an extension plate, which is fixedly connected to the top of the ventilation shell. A second spring is fixedly connected to the inner wall of the extension plate. A limit block is fixedly connected to the bottom end of the second spring. A scraper is provided on the inner side of the extension plate. A groove is opened on the top of the scraper. The limit block is inserted into the inner wall of the groove.

[0009] As a further description of the above technical solution: a first magnet is fixedly connected to the side of the limiting block, and a second magnet is fixedly connected to the inner wall of the sliding groove, and the first magnet and the second magnet are magnetically connected.

[0010] As a further description of the above technical solution: the top of the heat exchange shell is provided with an air inlet hole, and the bottom of the heat exchange shell is provided with a heat dissipation hole.

[0011] As a further description of the above technical solution: an intake fan is fixedly installed on the top inner wall of the heat exchange shell, a heat conduction hole is opened between the heat sink and the heat exchange shell, and the output shaft of the motor is connected to the intake fan through a pulley and belt drive.

[0012] As a further description of the above technical solution: the bottom of the scraper is set at an angle, and the dustproof mesh plate is configured to cooperate with the bottom angle of the scraper.

[0013] As a further description of the above technical solution: a fixed pulley is fixedly connected to the inner wall of the back plate, and the surface of the rope is in contact with the surface of the fixed pulley.

[0014] As a further description of the above technical solution: the extension plate is U-shaped, and both sides of the scraper are slidably connected to the inner side of the extension plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the back plate and dustproof mesh are slid into the heat exchange shell by setting the limiting component. The insert is automatically fixed under the action of the spring. When disassembling, the back plate and dustproof mesh can be taken out by squeezing the pressure plate and pulling the handle, which greatly improves maintenance efficiency and is reliable: the insert and slot are tightly matched to firmly fix the dustproof mesh, prevent it from loosening and falling off, continuously filter the air, and ensure the stable operation of the equipment.

[0017] 2. In this utility model, the dust scraper assembly is designed so that when the dust screen at the air inlet is disassembled, the bottom slope of the scraper contacts the top surface of the dust screen. As the dust screen moves, the scraper automatically scrapes off the impurities on its surface, ensuring that the dust scraper assembly always maintains a good working condition and extending its service life. Attached Figure Description

[0018] Figure 1 This is a front view of a heat dissipation structure for a permanent magnet generator proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the heat exchange shell of a permanent magnet generator heat dissipation structure proposed in this utility model.

[0020] Figure 3 This is a top sectional view of the back plate of a heat dissipation structure for a permanent magnet generator proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the back plate and dustproof mesh plate of a permanent magnet generator heat dissipation structure proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of a permanent magnet generator and an intake fan, which are part of a heat dissipation structure for a permanent magnet generator according to this utility model.

[0023] Figure 6 This is a schematic diagram of the dust scraping assembly of a permanent magnet generator heat dissipation structure proposed in this utility model.

[0024] Legend:

[0025] 1. Heat sink; 2. Mounting slot; 3. Permanent magnet generator; 4. Extension plate; 5. Heat exchange shell; 6. Handle; 7. Back plate; 8. Intake fan; 9. Heat conduction hole; 10. Slot; 11. Heat dissipation hole; 12. Insert block; 13. Spring No. 1; 14. Fixed pulley; 16. Pressure plate; 17. Rope; 18. Limiting block; 19. Spring No. 2; 20. Scraper; 21. Slide groove; 22. Dustproof mesh plate; 23. Air inlet; 24. Magnet No. 1. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 , Figure 2 , Figure 6 This utility model provides an embodiment of a permanent magnet generator heat dissipation structure, including a heat dissipation base 1. The top of the heat dissipation base 1 has an installation groove 2, and a permanent magnet generator 3 is fixedly installed on the inner wall of the installation groove 2. A heat exchange shell 5 is fixedly connected to the side of the heat dissipation base 1, forming a heat transfer channel so that the heat absorbed by the heat dissipation base 1 can be transferred to the heat exchange shell 5, laying the foundation for subsequent heat dissipation operations. A limiting component is provided on the heat exchange shell 5. The limiting component is used to fix and easily disassemble related components on the heat exchange shell 5, facilitating equipment maintenance and cleaning. The limiting component includes a back plate 7. The heat exchange shell 5 has a front opening. The front opening design facilitates the installation of the back plate 7 and its dustproof mesh 22 onto the heat exchange shell 5, and also facilitates subsequent inspection and cleaning of the interior of the heat exchange shell 5. The back of the back plate 7 contacts the front opening of the heat exchange shell 5, allowing the back plate 7 to effectively seal the front opening of the heat exchange shell 5, preventing dust and other impurities from entering the interior of the heat exchange shell 5 from the front and affecting equipment heat dissipation.

[0028] Reference Figure 3 , Figure 4 Two dust filter plates 22 are fixedly connected to the back of the back plate 7. The dust filter plates 22 can filter the air entering the heat exchange shell 5, preventing dust, impurities, etc. from entering and accumulating inside the heat exchange shell 5, thus affecting the heat dissipation efficiency. At the same time, they can also protect components such as the intake fan 8 from corrosion by impurities. The two dust filter plates 22 are slidably connected to the top and bottom of the heat exchange shell 5, respectively. The sliding connection method facilitates the installation and removal of the dust filter plates 22. When it is necessary to clean the dust filter plates 22, they can be easily pulled out. A handle 6 is fixedly connected to the front of the back plate 7, which is convenient for operation. When operators manipulate the backplate 7, whether installing or removing it, or performing routine equipment checks, they can apply force through the handle 6. A pressure plate 16 is slidably connected to the inside of the handle 6. The pressure plate 16 can slide inside the handle 6 to control the movement of the rope 17, thereby unlocking the insert 12 and facilitating the removal of the backplate 7 and the dustproof mesh 22. The rope 17 is fixedly connected to the back of the pressure plate 16. The rope 17 is used to pull the insert 12 to separate or engage the insert 12 with the slot 10, thereby controlling the fixing and removal of the backplate 7.

[0029] Reference Figure 3, Figure 4 Both sides of the back plate 7 are provided with movable slots, allowing the insert 12 to slide smoothly within them under the traction of the rope 17, completing the locking and unlocking actions with the slot 10. The other end of the rope 17 extends through the front of the back plate 7 and into the movable slot, ensuring that the rope 17 can connect to the pressure plate 16 and also connect to the insert 12 inside the back plate 7, enabling the pressure plate 16 to remotely control the insert 12. The other end of the rope 17 is fixedly connected to the insert 12. By pulling the insert 12, the rope 17 changes the position of the insert 12, thereby fixing or separating the back plate 7 from the heat exchange shell 5. The surface of the insert 12 slides in connection with the inner wall of the movable slot, ensuring that the insert 12 slides smoothly within the movable slot, avoiding jamming and ensuring the normal operation of the limiting component. A first spring 13 is sleeved on the surface of the rope 17, providing elasticity to the insert 12, so that the insert 12 can automatically reset and insert when not under the tension of the rope 17. The slot 10 fixes the back plate 7 to the heat exchange shell 5. One side of the insert block 12 is fixedly connected to one end of the first spring 13, ensuring that the elastic force of the first spring 13 can effectively act on the insert block 12, realizing the automatic reset of the insert block 12. The inner wall of the back plate 7 is fixedly connected to the pulley 14. The surface of the rope 17 contacts the surface of the pulley 14. The pulley 14 changes the direction of movement of the rope 17, so that the linear movement of the pressure plate 16 can be smoothly converted into the horizontal movement of the insert block 12 in the movable slot, improving the convenience of operation. The other side of the insert block 12 abuts against the inner wall of the slot 10. After the insert block 12 is inserted into the slot 10, it can effectively prevent the back plate 7 from detaching from the heat exchange shell 5, ensuring that the dustproof mesh plate 22 and the back plate 7 are stably installed on the heat exchange shell 5. The top of the heat exchange shell 5 is provided with an air inlet 23, which provides a channel for external air to enter the heat exchange shell 5, allowing cold air to enter the heat exchange shell 5 and mix with hot air to achieve heat exchange and heat dissipation.

[0030] Reference Figure 1 - Figure 3 The bottom of the heat exchange shell 5 is provided with heat dissipation holes 11, which are used to exhaust hot air inside the heat exchange shell 5, forming an air circulation channel to ensure continuous heat dissipation. An intake fan 8 is fixedly installed on the inner wall of the top of the heat exchange shell 5. The rotation of the intake fan 8 generates airflow, which accelerates the airflow inside the heat exchange shell 5, improves heat exchange efficiency, and enhances heat dissipation. A heat conduction hole 9 is provided between the heat sink 1 and the heat exchange shell 5. The heat conduction hole 9 provides a path for heat to be transferred from the heat sink 1 to the heat exchange shell 5, ensuring that heat can be transferred quickly and effectively, and improving the overall performance of the heat dissipation system. The output shaft of the motor is connected to the intake fan 8 through a pulley and belt drive. Through the transmission action of the pulley and belt, the intake fan 8 is driven to start rotating. When the intake fan 8 rotates, it will form an airflow inside the heat exchange shell 5. The intake fan 8 is driven by the power of the permanent magnet generator 3 itself, without the need for additional energy, reducing energy consumption. At the same time, the airflow formed inside the heat exchange shell 5 provides power for air circulation and heat dissipation.

[0031] Reference Figure 1 , Figure 6 A dust scraping assembly is installed above the heat sink housing. This assembly automatically cleans dust from the dust filter screen 22, reducing the frequency of manual cleaning, improving equipment maintenance convenience, and ensuring the filtration effect of the dust filter screen 22. The dust scraping assembly includes an extension plate 4, which provides mounting support for components such as the scraper 20, ensuring the structural stability of the dust scraping assembly. The extension plate 4 is U-shaped, which facilitates the sliding of the scraper 20 on its inner side and also limits the scraper 20, preventing it from shifting during movement. Both sides of the scraper 20 are slidably connected to the inner side of the extension plate 4, allowing the scraper 20 to slide within the extension plate 4. The scraper moves freely and smoothly completes the dust scraping operation on the dustproof mesh plate 22. The extension plate 4 is fixedly connected to the top of the ventilation shell to ensure that the position of the scraping assembly and the heat exchange shell 5 is relatively fixed, so that the scraper 20 can accurately clean the dustproof mesh plate 22. The inner wall of the extension plate 4 is fixedly connected to the second spring 19, which provides elasticity to the scraper 20, so that the scraper 20 can maintain contact with the dustproof mesh plate 22 when there is no external force, ensuring the dust scraping effect. The bottom end of the second spring 19 is fixedly connected to the limit block 18, which transmits the elasticity of the second spring 19 to the scraper 20 and limits the position of the scraper 20 to prevent the scraper 20 from detaching from the extension plate 4.

[0032] Reference Figure 6 A scraper 20 is provided on the inner side of the extension plate 4. It scrapes away dust from the dustproof mesh plate 22 by its own movement, keeping the dustproof mesh plate 22 clean. A groove 21 is provided on the top of the scraper 20, providing sliding space for the limiting block 18. This allows the scraper 20 to move up and down under the action of the second spring 19, adapting to different dust-scraping needs. The limiting block 18 is inserted into the inner wall of the groove 21. This connection method ensures that the limiting block 18 can drive the scraper 20 to move, while also allowing the scraper 20 to slide stably within the extension plate 4. The side of the limiting block 18 is fixedly connected to... There is a first magnet 24, and a second magnet is fixedly connected to the inner wall of the slide groove 21. The first magnet 24 and the second magnet are magnetically connected. The magnetic connection can not only ensure the stable connection between the limiting block 18 and the scraper 20, but also facilitate the separation of the scraper 20 and the limiting block 18 when needed, so as to facilitate the cleaning or replacement of the scraper 20. The bottom of the scraper 20 is set with a slope. The dustproof mesh plate 22 is set in conjunction with the bottom slope of the scraper 20. The slope design makes the contact between the scraper 20 and the dustproof mesh plate 22 tighter, resulting in better dust removal effect and effectively removing dust and impurities on the dustproof mesh plate 22.

[0033] Working principle: Align the side of the heat exchange shell 5 with the side of the heat sink 1, ensuring the heat conduction holes 9 between the heat sink 1 and the heat exchange shell 5 are aligned and tightly connected to guarantee smooth heat transfer from the heat sink 1 to the heat exchange shell 5. Attach the back of the back plate 7 to the front opening of the heat exchange shell 5, allowing the two dustproof mesh plates 22 to slide against the top and bottom of the heat exchange shell 5 respectively. Then push the back plate 7 to slide the dustproof mesh plates 22 into their designated positions. During this process, the insert blocks 12 in the movable slots on both sides of the back plate 7, under the action of the first spring 13, insert into the corresponding slots 10 on the heat exchange shell 5, thus fixing the back plate 7 and the dustproof mesh plates 22 to the heat exchange shell 5. The extension plate 4 is fixedly connected to the top of the heat exchange shell 5. Place the scraper 20 on the extension plate. 4. Align the two sides of the scraper 20 with the sliding rails on the inner side of the extension plate 4. Then fix the second spring 19 to the inner wall of the extension plate 4, with its bottom end fixedly connected to the limiting block 18. Insert the limiting block 18 into the top sliding groove 21 of the scraper 20. At this time, the first magnet 24 and the second magnet are magnetically connected, completing the installation of the dust scraping assembly. When the permanent magnet generator 3 starts running, it will generate a lot of heat. The heat sink 1 is in direct contact with the permanent magnet generator 3 and can quickly absorb the heat emitted by the generator. The absorbed heat is transferred to the interior of the heat exchange shell 5 through the heat conduction hole 9 between the heat sink 1 and the heat exchange shell 5. As the output shaft of the permanent magnet generator 3 rotates, the intake fan 8 is driven to start rotating through the transmission action of the pulley and belt. When the intake fan 8 rotates, it will... Airflow is generated inside the heat exchange shell 5. External air enters the heat exchange shell 5 after passing through the air inlet 23 at the top of the heat exchange shell 5 and being filtered by the dust filter 22 on the air inlet 23. The incoming cold air mixes with the hot air inside the heat exchange shell 5. Then, under the action of the rotating intake fan 8, the hot air is discharged from the heat dissipation hole 11 at the bottom of the heat exchange shell 5, thereby realizing the circulation of air and continuously carrying heat out of the heat exchange shell 5 to achieve the purpose of heat dissipation for the permanent magnet generator 3. When it is necessary to clean the dust filter 22, the operator squeezes the pressure plate 16 on the inside of the handle 6. The pressure plate 16 slides inward after being squeezed, thereby driving the rope 17 connected to it to move. Under the guidance of the fixed pulley 14, the rope 17 pulls the insert block 12 in the movable slot. Under the tension of rope 17, insert block 12 slides along the inner wall of the movable groove and squeezes spring 13. After insert block 12 is completely separated from slot 10, the operator applies an outward pulling force to handle 6. At this time, back plate 7 will drive the two dust screens 22 to be removed from heat dissipation hole 11 and air inlet 23. Since the dust screen 22 on air inlet 23 is more prone to dust accumulation when air enters, as the upper dust screen 22 moves outward with back plate 7, the top surface of dust screen 22 will contact the bottom slope of scraper 20. As dust screen 22 continues to move, scraper 20 will scrape off the impurities on the top surface of dust screen 22. When scraper 20 needs to be cleaned or replaced, the operator can pull scraper 20 with a little force.Overcoming the magnetic force between magnet 24 and magnet 2, the limiting block 18 is disengaged from the groove of scraper 20, allowing scraper 20 to be removed from the inside of extension plate 4 for cleaning or replacement. After cleaning, scraper 20 is reinstalled into the inside of extension plate 4 following the installation steps described above.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat dissipation structure for a permanent magnet generator, comprising a heat sink (1), characterized in that: The top of the heat sink (1) is provided with an installation groove (2), and a permanent magnet generator (3) is fixedly installed on the inner wall of the installation groove (2). A heat exchange shell (5) is fixedly connected to the side of the heat sink (1), and a limit component is provided on the heat exchange shell (5). The limiting component includes a back plate (7), with an opening on the front of the heat exchange shell (5). The back of the back plate (7) contacts the opening on the front of the heat exchange shell (5). Two dustproof mesh plates (22) are fixedly connected to the back of the back plate (7). The two dustproof mesh plates (22) are slidably connected to the top and bottom of the heat exchange shell (5), respectively. A handle (6) is fixedly connected to the front of the back plate (7). A pressure plate (16) is slidably connected to the inner side of the handle (6). A rope (1) is fixedly connected to the back of the pressure plate (16). 7) Movable slots are provided on both sides of the back plate (7). The other end of the rope (17) moves through the front of the back plate (7) and extends into the movable slot. The other end of the rope (17) is fixedly connected to the insert (12). The surface of the insert (12) is slidably connected to the inner wall of the movable slot. A first spring (13) is sleeved on the surface of the rope (17). One side of the insert (12) is fixedly connected to one end of the first spring (13). The other side of the insert (12) abuts against the inner wall of the slot (10).

2. The heat dissipation structure for a permanent magnet generator according to claim 1, characterized in that: A dust scraping assembly is provided on the top of the heat dissipation shell. The dust scraping assembly includes an extension plate (4). The extension plate (4) is fixedly connected to the top of the ventilation shell. A second spring (19) is fixedly connected to the inner wall of the extension plate (4). A limit block (18) is fixedly connected to the bottom end of the second spring (19). A scraper (20) is provided on the inner side of the extension plate (4). A groove (21) is opened on the top of the scraper (20). The limit block (18) is inserted into the inner wall of the groove (21).

3. The heat dissipation structure for a permanent magnet generator according to claim 2, characterized in that: The side of the limiting block (18) is fixedly connected to a first magnet (24), and the inner wall of the slide groove (21) is fixedly connected to a second magnet. The first magnet (24) and the second magnet are magnetically connected.

4. The heat dissipation structure for a permanent magnet generator according to claim 1, characterized in that: The heat exchange shell (5) has an air inlet (23) at the top and a heat dissipation hole (11) at the bottom.

5. The heat dissipation structure for a permanent magnet generator according to claim 1, characterized in that: An intake fan (8) is fixedly installed on the top inner wall of the heat exchange shell (5). A heat conduction hole (9) is provided between the heat sink (1) and the heat exchange shell (5). The output shaft of the motor is connected to the intake fan (8) through a pulley and belt drive.

6. The heat dissipation structure for a permanent magnet generator according to claim 2, characterized in that: The bottom of the scraper (20) is set at an angle, and the dustproof mesh plate (22) is set in conjunction with the bottom angle of the scraper (20).

7. The heat dissipation structure for a permanent magnet generator according to claim 1, characterized in that: A fixed pulley (14) is fixedly connected to the inner wall of the back plate (7), and the surface of the rope (17) is in contact with the surface of the fixed pulley (14).

8. The heat dissipation structure for a permanent magnet generator according to claim 2, characterized in that: The extension plate (4) is U-shaped, and both sides of the scraper (20) are slidably connected to the inner side of the extension plate (4).

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