Motor with rotor winding heat dissipation structure

Abstract

The present invention proposes a motor with a rotor winding heat dissipation structure, comprising a casing, a main shaft installed inside the casing, a rotor connected to the outer surface of the main shaft, heat dissipation blades connected to the end of the main shaft, a heat dissipation groove reserved inside the rotor, a duct assembly connected to the surface of the rotor, and the duct assembly including a positioning pin, an adjustment arm connected to the outer side of the positioning pin, an air duct guide plate connected to the upper surface of the adjustment arm, an engaging plate connected to one side of the air duct guide plate, and a filter connected to the top of the air duct guide plate. The present invention forms eddies by dynamically adjusting the direction of the air inlet, and combines the non-contact air duct design of the winding and the rotor and the application of thermal insulation materials to significantly improve the heat dissipation efficiency of the motor. The eddies enhance the air flow disturbance, destroy the boundary layer thermal resistance, enable efficient heat transfer, and uniformly distribute the temperature to avoid local high temperatures. The thermal insulation structure effectively blocks thermal crosstalk and reduces heat diffusion between adjacent windings.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor with a rotor winding heat dissipation structure. Background Art

[0002] As an energy conversion device, motors generate significant heat in their rotor windings when operating under high load. If this heat cannot be dissipated promptly, it can cause localized temperature increases in the windings, leading to insulation degradation, interturn short circuits, and even safety accidents. Traditional motor cooling technologies primarily rely on air or oil cooling, but both have significant drawbacks.

[0003] In response to this, Chinese patent application publication number CN112865427A discloses a winding heat dissipation structure, rotor, and motor, relating to the field of motor technology and addressing the technical problem of poor motor heat dissipation. This invention employs a structure in which the motor rotor magnets are flush with the rotor core silicon steel sheets, with the top of the rotor magnets overlapping the bottom of the heat dissipation structure. This avoids unnecessary through-holes and corners designed for mounting on the motor blades, thereby reducing noise generated by turbulent airflow during operation. A closed heat dissipation air path lowers the surface temperature of the motor windings, thereby reducing the overall motor temperature and improving its efficiency and reliability.

[0004] Based on an analysis of existing technology flaws, it was discovered that early air-cooling technology used a fan at the rear end of the rotor to drive airflow for heat dissipation. However, this cooling air easily escaped through the gap between the winding and the end cap, resulting in insufficient heat dissipation at the winding ends. Furthermore, the air had difficulty penetrating the interior of the winding, effectively failing to reduce temperature rise. Oil-cooling technology, while achieving cooling through circulating oil contacting the winding surface, only cools the outer layer of enameled wire, leaving internal heat accumulation. Especially at high speeds, the inner enameled wire of the winding can soften and deform due to excessive temperature, leading to insulation failure and the risk of mechanical displacement. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art. The present invention proposes a motor with a rotor winding heat dissipation structure.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a motor with a rotor winding heat dissipation structure, comprising a casing, a main shaft installed inside the casing, a rotor connected to the outer surface of the main shaft, a heat dissipation blade connected to the end of the main shaft, a heat dissipation groove reserved inside the rotor, the rotor is configured as a sheet structure and arranged in sequence on the main shaft, and the rotor and the main shaft are welded together, a heat dissipation groove is reserved between each group of rotors, and air circulates through the heat dissipation grooves between the rotors, an air duct assembly is connected to the surface of the rotor, the air duct assembly includes a positioning pin sheet, an adjustment arm is connected to the outer side of the positioning pin sheet, an air duct guide plate is connected to the upper surface of the adjustment arm, an engaging plate is connected to one side of the air duct guide plate, and a filter is connected to the top of the air duct guide plate;

[0007] The outer surface of the positioning pin is sleeved with an adjustment component, and the adjustment component includes a winding body, and the outer surface of the winding body is sleeved with an integration sleeve, and one side of the integration sleeve is connected to a plug plate. The positioning pins are provided in two groups, and the two groups of positioning pins are respectively arranged at the top and bottom ends of the air duct guide plate, and the two groups of positioning pins are connected through the air duct guide plate.

[0008] Furthermore, the positioning pin and the adjusting arm are connected by a connecting shaft, the positioning pin and the adjusting arm are rotationally connected, the adjusting arms are connected with an air duct guide plate and an engaging plate, one side of the engaging plate is in contact with the surface of the rotor, and the combination of the air duct guide plate, the engaging plate and the rotor wraps the winding body inside.

[0009] Furthermore, the plug board is embedded in the heat dissipation slot, the winding body is wound on the rotor, the winding body and the rotor do not contact each other, and an air duct for air circulation is left between the winding body and the rotor.

[0010] Furthermore, the top of the winding body is connected to an air inlet bar, and two air guide plates are provided on the outer surface of the air inlet bar. The two air guide plates are obliquely arranged on the surface of the air inlet bar, and the air inlet bar is used to wrap one side of the top of the winding body.

[0011] Furthermore, a limit seat is fixedly connected to the top surface of the rotor, an outer wall of the limit seat is configured to be arc-shaped, and the limit seat corresponds to the plug plate.

[0012] Furthermore, an adjustment ring is sleeved on the outer surface of the main shaft, the adjustment ring and the main shaft are rotatably connected, and three groups of connecting sleeves are fixedly connected to the outer surface of the adjustment ring, and the three groups of connecting sleeves are evenly distributed on the adjustment ring.

[0013] Furthermore, an adjustable telescopic rod is embedded in the interior of the connecting sleeve, and a positioning rod is connected to the side of the adjustable telescopic rod away from the adjustment ring, and the positioning rod is connected to a connecting shaft arranged in the middle position of the adjustment arm.

[0014] Furthermore, the adjustable telescopic rod is rotatably connected to one end of the connecting sleeve, and the top end of the limit seat is connected to a support ring, which is used to support the adjustable telescopic rod and is arranged at the bottom end of the adjustable telescopic rod.

[0015] Furthermore, the top end of the adjustment arm close to the heat dissipation blade is connected to an adjustment telescopic rod, which is used to separate impurities in the air. The positioning rod passes through the adjustment telescopic rod and is connected to a connecting shaft set in the middle position of the adjustment arm.

[0016] Furthermore, when the rotor rotates, the air duct assembly and the adjustment assembly are driven to rotate, during which time the air is guided by the air guide plate and transported to the winding body for local heat dissipation of the winding body.

[0017] Compared with the prior art, the beneficial effects of the present invention include: forming vortices by dynamically adjusting the direction of the air inlet, combining the non-contact air duct design of the winding and the rotor and the application of thermal insulation materials, which significantly improves the heat dissipation efficiency of the motor. The vortex enhances the airflow disturbance, destroys the thermal resistance of the boundary layer, enables efficient heat transfer, and uniformly distributes the temperature to avoid local high temperatures. The thermal insulation structure effectively blocks thermal crosstalk and reduces heat diffusion between adjacent windings. In addition, the compact structural design reduces wind resistance and improves air circulation. Combined with the efficient heat dissipation of the heat dissipation blades, lightweight and high power density are achieved. The dynamic adjustment capability enables the system to adapt to load changes, extend the life of the motor, and is suitable for high-speed and high-power scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0019] Figure 1 Schematically shows a three-dimensional structural diagram of a motor having a rotor winding heat dissipation structure according to one embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the cross-sectional structure of a motor housing of a rotor winding heat dissipation structure proposed in accordance with one embodiment of the present invention is shown;

[0021] Figure 3 A schematic diagram of the structure of a motor rotor and heat dissipation blades of a rotor winding heat dissipation structure proposed in accordance with one embodiment of the present invention is shown;

[0022] Figure 4 A schematic diagram of the structure of a motor air duct guide plate and an engaging plate of a rotor winding heat dissipation structure proposed in accordance with one embodiment of the present invention is shown;

[0023] Figure 5 A schematic diagram of the structure of a motor winding body and a rotor of a rotor winding heat dissipation structure proposed in accordance with one embodiment of the present invention is shown;

[0024] Figure 6 A schematic diagram of the structure of a motor air inlet strip and an air guide plate of a rotor winding heat dissipation structure proposed in accordance with one embodiment of the present invention is shown;

[0025] Figure 7A schematic diagram of the structure of a motor adjustment arm and a positioning pin piece of a rotor winding heat dissipation structure proposed in accordance with one embodiment of the present invention is shown;

[0026] Figure 8 The exploded structure diagram of a motor with a rotor winding heat dissipation structure proposed in accordance with one embodiment of the present invention is schematically shown.

[0027] In the figure: 11. Casing; 12. Air inlet; 13. Rotor; 14. Heat dissipation blades; 15. Heat dissipation slots; 16. Main shaft; 2. Air duct assembly; 21. Positioning pin; 22. Adjustment arm; 23. Air duct guide plate; 24. Engaging plate; 25. Air inlet strip; 26. Air guide plate; 27. Filter; 3. Adjustment assembly; 31. Winding body; 32. Integration sleeve; 33. Insert plate; 34. Adjustment telescopic rod; 35. Adjustment ring; 36. Connecting sleeve; 37. Positioning insert rod; 38. Support ring; 39. Limit seat. DETAILED DESCRIPTION

[0028] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0029] According to one embodiment of the present invention, Figures 1-8 A motor with a rotor winding heat dissipation structure includes a housing 11, a main shaft 16 is installed inside the housing 11, a rotor 13 is connected to the outer surface of the main shaft 16, a heat dissipation blade 14 is connected to the end of the main shaft 16, and a heat dissipation groove 15 is reserved inside the rotor 13; when the motor is working, the rotor 13 rotates inside the housing 11, and at the same time drives the heat dissipation blade 14 to rotate. When the heat dissipation blade 14 rotates, the heat generated inside is discharged, thereby achieving heat dissipation inside the housing 11. In order to improve air circulation, an air inlet 12 is also opened on the side wall of the housing 11. When the rotor When 13 rotates internally, external air will be guided into the interior of the casing 11 through the air inlet 12. In addition, in order to increase the contact area between the rotor 13 and the air and improve the heat dissipation effect of the rotor 13, the rotor 13 sheet structure is arranged in sequence on the main shaft 16, and the rotor 13 and the main shaft 16 are welded together. Due to the sheet structure design of the rotor 13 and the heat dissipation grooves 15 reserved between each group, the wind resistance during rotation is relatively small. In addition, the air can circulate through the heat dissipation grooves 15 between the rotors 13, the air circulation will be relatively better, and the heat dissipation efficiency will also be higher.

[0030] In order to improve the working efficiency of the motor, by improving the heat dissipation effect, the working condition of the motor can be effectively improved and the service life of the motor can be extended. In order to achieve this effect, based on the design between the rotor 13 and the heat dissipation groove 15, the air duct component 2 and the adjustment component 3 are correspondingly combined to further amplify this advantage. The specific operation is as follows:

[0031] When the rotor 13 rotates, it drives the rotation of the air duct assembly 2 and the adjustment assembly 3. During this period, the air is guided by the air guide plate 26 and delivered to the winding body 31 for local heat dissipation of the winding body 31. The surface of the rotor 13 is connected to the air duct assembly 2, and the air duct assembly 2 includes a positioning pin 21. The outer side of the positioning pin 21 is connected to the adjustment arm 22. The upper surface of the adjustment arm 22 is connected to the air duct guide plate 23. One side of the air duct guide plate 23 is connected to the meshing plate 24. The top of the air duct guide plate 23 is connected to the filter 27. The air duct guide plate 23 and the meshing plate 24 are connected between the adjustment arms 22. The meshing plate 2 4 is in contact with the surface of the rotor 13. The air duct guide plate 23, the meshing plate 24 and the rotor 13 are combined to wrap the winding body 31 inside. The outer surface of the positioning pin piece 21 is sleeved with the adjustment component 3. The adjustment component 3 includes a winding body 31. The outer surface of the winding body 31 is sleeved with an integration sleeve 32. One side of the integration sleeve 32 is connected to an insertion plate 33. The insertion plate 33 is embedded in the interior of the heat dissipation slot 15. The winding body 31 is wound on the rotor 13. The winding body 31 and the rotor 13 do not contact each other. An air duct for air circulation is left between the winding body 31 and the rotor 13.

[0032] In order to improve the internal heat dissipation efficiency, the installation of the winding body 31 is different from the traditional installation method. When the winding body 31 of the motor is combined with the rotor 13, the two are not in direct contact. The heat dissipation duct left between the two allows air to circulate better inside, thereby improving the heat dissipation effect.

[0033] The winding body 31 is installed with the help of two sets of positioning pins 21. The positioning pins 21 are installed on the upper and lower surfaces of the rotor 13. First, the winding body 31 is processed. The winding body 31 is wound between the two sets of positioning pins 21. After winding, the winding body 31 is bundled with the integration sleeve 32 so that the winding body 31 forms an integral structure. In this way, the winding order of the winding body 31 is restricted, so that the overall uniformity of the winding body 31 is better. In addition, bundling with the integration sleeve 32 can facilitate the later installation and provide a good environment for the later installation. After the winding body 31 is fixed, the pre-prepared plug-in plate 33 is embedded in the interior of the heat dissipation groove 15, and then the plug-in plate 33 and the integration sleeve 32 are connected. The integration sleeve 32 and the plug-in plate 33 are connected by sliding. The protrusions on the outside of the plug-in plate 33 are slidably embedded in the grooves reserved on the inside of the integration sleeve 32. The combination of the protrusions and the grooves completes the connection.

[0034] Since the regulating arms 22 are located above and below the rotor 13, when the winding body 31 is wound around the regulating arms 22, the winding body 31 is wrapped around the rotor 13 at a designated position relative to the prior art. Since the winding body 31 is wound around the regulating arms 22, the winding body 31 and the rotor 13 do not contact each other.

[0035] In order to improve the stability of the winding body 31 embedded in the housing 11 , the inserting plate 33 embedded in the heat dissipation slot 15 can be used to link the winding body 31 and the rotor 13 , thereby improving the stability of the winding body 31 .

[0036] There are two groups of positioning pins 21, and the two groups of positioning pins 21 are respectively arranged at the top and bottom ends of the air duct guide plate 23. The two groups of positioning pins 21 are connected through the air duct guide plate 23. The top of the winding body 31 is connected to the air inlet strip 25, and the outer surface of the air inlet strip 25 is provided with two air guide plates 26. The two air guide plates 26 are obliquely arranged on the surface of the air inlet strip 25, and the air inlet strip 25 is used to wrap the top side of the winding body 31.

[0037] In constructing the heat dissipation duct, the left and right ends of the same set of adjustment arms 22 are each provided with an air duct guide plate 23 and an engaging plate 24. Figure 7 As shown, there are a total of six duct guide plates 23 and meshing plates 24, and the upper and lower two adjusting arms 22 form a group, with a total of three groups. The adjusting arms 22 are used to fix the duct guide plates 23, and an air duct will be formed between the two adjusting arms 22 and the duct guide plates 23. A winding body 31 is provided in the air duct. In order to ensure the integrity of the air duct and prevent the air circulated by the rotation of the rotor 13 from affecting the heat dissipation efficiency in the air duct, it is separated by the meshing plates 24. The meshing plates 24 and the rotor 13 fit together, so that when the rotor 13 rotates, the airflow cannot enter the air duct composed of the duct guide plates 23 and the meshing plates 24. In this way, when the duct guide plates 23 and the meshing plates 24 cooperate with the heat dissipation blades 14, the rotation of the heat dissipation blades 14 can also discharge the air inside the duct guide plates 23 and the meshing plates 24 in a certain direction, thereby improving the heat dissipation efficiency.

[0038] Secondly, the heat generated by the winding body 31 can also be better diffused into the air and dissipated through the circulation of internal air. Since there is no direct contact between the rotor 13 and the winding body 31, the heat generated by the rotor 13 during rotation cannot directly affect the winding body 31.

[0039] In order to achieve different heat dissipation effects, this solution is further provided with an adjustment component 3. When the adjustment arm 22 is deflected, the meshing plate 24 on one side and the rotor 13 are separated. At this time, the outside air can enter the air duct guide plate 23 and the meshing plate 24, and form a vortex inside.

[0040] The outer surface of the main shaft 16 is sleeved with an adjusting ring 35, and the adjusting ring 35 and the main shaft 16 are rotatably connected. The outer surface of the adjusting ring 35 is fixedly connected with three groups of connecting sleeves 36, and the three groups of connecting sleeves 36 are evenly distributed on the adjusting ring 35. An adjusting telescopic rod 34 is embedded in the interior of the connecting sleeve 36. The side of the adjusting telescopic rod 34 away from the adjusting ring 35 is connected with a positioning rod 37. The positioning rod 37 is connected to a connecting shaft set in the middle position of the adjusting arm 22. The adjusting telescopic rod 34 is rotatably connected to one end of the connecting sleeve 36. The top of the limit seat 39 is connected with a support ring 38. The support ring 38 is used to adjust the telescopic rod 34. The rod 34 is supported, and the support ring 38 is set at the bottom end of the adjustable telescopic rod 34. The top of the adjusting arm 22 near the side of the heat dissipation blade 14 is connected with the adjustable telescopic rod 34. The adjusting telescopic rod 34 is used to separate impurities in the air. The positioning plug rod 37 passes through the adjusting telescopic rod 34 and is connected to the connecting shaft set in the middle position of the adjusting arm 22. A limiting seat 39 is fixedly connected to the top surface of the rotor 13. The outer wall of the limiting seat 39 is set to an arc shape. The limiting seat 39 corresponds to the plug plate 33. The positioning pin piece 21 and the adjusting arm 22 are connected by a connecting shaft, and the positioning pin piece 21 and the adjusting arm 22 are rotatably connected.

[0041] When adjusting the angle of the adjusting arm 22, further adjustment is made by rotating the adjusting ring 35. When the adjusting ring 35 is rotated, the adjusting telescopic rod 34 is driven, and the traction of the adjusting telescopic rod 34 drives the positioning rod 37 to deflect the angle. When the positioning rod 37 is rotated, the adjusting arm 22 is driven to rotate along the connecting shaft, and finally the deflection of the adjusting arm 22 is achieved. When the adjusting arm 22 is deflected, the meshing plate 24 and the rotor 13 on one side are separated, and the other side will be squeezed by the force, causing the meshing plate 24 to bend. The direction of the air inlet is adjusted by the different deflection directions of the adjusting arm 22. Through the diversified adjustment of the air inlet, when the rotor 13 rotates, one side of the windward surface corresponds to the opening, so that when the rotor 13 rotates, the air can enter the interior of the air duct guide plate 23 and the meshing plate 24 from the gap between the meshing plate 24 and the rotor 13, and finally the heat dissipation of the winding body 31 is achieved. Since each deflection only opens one side of the opening, the air is introduced into the interior of the air duct guide plate 23 and the meshing plate 24, and finally a chaotic airflow is formed inside the air duct guide plate 23 and the meshing plate 24. Since the airflow forms vortices in different directions inside, the turbulent effect of the vortex significantly increases the contact area and disturbance degree of the airflow with the winding body 31. Compared with laminar flow, turbulent flow can destroy the thermal resistance of the boundary layer, allowing heat to be transferred to the cooling medium more efficiently, thereby improving the overall heat dissipation efficiency. At the same time, vortexes cause the air to form a complex three-dimensional flow inside the duct guide plate 23 and the meshing plate 24, avoiding high temperature accumulation in local areas due to air flow stagnation. Especially for heat-intensive and compact components such as motor rotor windings, vortexes can ensure uniform heat diffusion, reduce the risk of insulation aging and local failure, and finally take away the internal hot air through the rotation of the heat dissipation blades 14 to achieve heat dissipation.

[0042] In addition, on the winding body 31, each group of winding bodies 31 is wrapped with a duct guide plate 23 and a meshing plate 24, so that the generated hot air flow will gather inside the duct guide plate 23 and the meshing plate 24, and is not easy to dissipate. In order to prevent the duct guide plate 23 and the meshing plate 24 from diffusing heat to another group of duct guide plates 23 and meshing plates 24, the duct guide plate 23 and the meshing plate 24 are made of heat-insulating material, so that the generated heat can be gathered and prevented from diffusing to other winding bodies 31, thereby solving the problem of thermal crosstalk between windings and improving heat dissipation efficiency.

[0043] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A motor with a rotor winding heat dissipation structure, characterized in that: The invention comprises a casing, wherein a main shaft is installed inside the casing, a rotor is connected to the outer surface of the main shaft, a heat dissipation blade is connected to the end of the main shaft, a heat dissipation slot is reserved inside the rotor, the rotor is configured as a sheet structure and is sequentially arranged on the main shaft, and the rotor and the main shaft are welded together, a heat dissipation slot is reserved between each group of rotors, and air circulates through the heat dissipation slots between the rotors, an air duct assembly is connected to the surface of the rotor, the air duct assembly includes a positioning pin sheet, an adjustment arm is connected to the outer side of the positioning pin sheet, an air duct guide plate is connected to the upper surface of the adjustment arm, a meshing plate is connected to one side of the air duct guide plate, and a filter is connected to the top of the air duct guide plate; The outer surface of the positioning pin is sleeved with an adjustment component, and the adjustment component includes a winding body, and the outer surface of the winding body is sleeved with an integrated sleeve, and one side of the integrated sleeve is connected to a plug plate. The positioning pins are provided in two groups, and the two groups of positioning pins are respectively provided at the top and bottom ends of the air duct guide plate, and the two groups of positioning pins are connected through the air duct guide plate. The insert plate is embedded in the heat dissipation slot, the winding body is wound on the rotor, the winding body and the rotor do not contact each other, and an air duct for air circulation is left between the winding body and the rotor; The outer surface of the main shaft is sleeved with an adjusting ring, and the adjusting ring and the main shaft are rotatably connected. The outer surface of the adjusting ring is fixedly connected with three groups of connecting sleeves, and the three groups of connecting sleeves are evenly distributed on the adjusting ring. An adjusting telescopic rod is embedded in the interior of the connecting sleeve, and a positioning rod is connected to the side of the adjusting telescopic rod away from the adjusting ring. The positioning rod is connected to a connecting shaft arranged in the middle position of the adjusting arm.

2. The motor with the rotor winding heat dissipation structure according to claim 1, characterized in that: The positioning pin and the adjusting arm are connected by a connecting shaft, and the positioning pin and the adjusting arm are rotationally connected. The adjusting arms are connected with an air duct guide plate and an engaging plate, and one side of the engaging plate is in contact with the surface of the rotor. The combination of the air duct guide plate, the engaging plate and the rotor wraps the winding body inside.

3. The motor with the rotor winding heat dissipation structure according to claim 1, characterized in that: The top of the winding body is connected to an air inlet strip, and the outer surface of the air inlet strip is provided with two air guide plates, which are obliquely arranged on the surface of the air inlet strip. The air inlet strip is used to wrap one side of the top of the winding body.

4. The motor with the rotor winding heat dissipation structure according to claim 1, characterized in that: A limit seat is fixedly connected to the top surface of the rotor, an outer wall of the limit seat is configured to be arc-shaped, and the limit seat corresponds to the plug plate.

5. The motor with the rotor winding heat dissipation structure according to claim 4, characterized in that: The adjustable telescopic rod is rotatably connected to one end of the connecting sleeve, and the top end of the limit seat is connected to a support ring, which is used to support the adjustable telescopic rod. The support ring is arranged at the bottom end of the adjustable telescopic rod.

6. The motor with the rotor winding heat dissipation structure according to claim 5, characterized in that: The top end of the adjustment arm close to the heat dissipation blade is connected with an adjustment telescopic rod, which is used to separate impurities in the air. The positioning rod passes through the adjustment telescopic rod and is connected to a connecting shaft set in the middle position of the adjustment arm.

7. The motor with a rotor winding heat dissipation structure according to claim 1, characterized in that: When the rotor rotates, the air duct assembly and the adjustment assembly are driven to rotate. During this period, the air is guided by the air guide plate and transported to the winding body for local heat dissipation of the winding body.

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