Auxiliary heat dissipation device for alternating current motor

Abstract

The utility model relates to the technical field of heat dissipation devices for AC motors, and discloses an auxiliary heat dissipation device for an AC motor, which comprises an installation box, the top of the installation box is fixedly connected with a permeable plate, the top of the permeable plate is fixedly provided with an AC motor body, the AC motor body is provided with a rotor, and the rotor is provided with a heat dissipation device. And a speed change assembly is arranged on the outer wall of the rotor and located outside the alternating current motor body, and a rotating shaft is rotationally connected between the two sides of the inner wall of the mounting box. Through cooperative use of the rotating shaft, the speed change assembly, the connecting assembly, the heat dissipation assembly and other structures, the motor output shaft can drive a gear set and a bevel gear system, multiple sets of heat dissipation blades can be synchronously driven to rotate without an extra power source, and a three-dimensional airflow field covering a motor shell, the hot end of a refrigeration piece and a heat dissipation pipeline is formed; and in addition, the cold end of the refrigeration sheet is directly attached to the motor shell for cooling, so that the overall heat dissipation capability of the motor is further enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of AC motor heat dissipation devices, and in particular to an auxiliary heat dissipation device for AC motors. Background Technology

[0002] With the continuous development of industrial technology, AC motors have been widely used in many fields. However, because motors generate a lot of heat during operation, their temperature rises, affecting their efficiency and service life. Therefore, motor heat dissipation has always been a key challenge for technicians. Traditional motor cooling devices typically use fans, heat sinks, etc., but these methods often suffer from low efficiency and large space requirements.

[0003] For example, Chinese utility model patent application number 202220939522.8 discloses a heat dissipation device for AC motors, including a mounting base, a motor body fixedly connected to the top surface of the mounting base, a rotating shaft mounted on the motor body, a support column fixedly connected to the bottom surface of the mounting base, a bevel gear seat rotatably connected to the top surface of the support column, two driven bevel gear rings rotatably connected to the side of the mounting base, the circumferential side of the driven bevel gear rings meshing with the bevel gear seat, a cooling fan fixedly connected to the inner wall of the driven bevel gear rings, a rotating rod rotatably connected to the inner wall of the mounting base, a driving bevel gear fixedly connected to one end of the rotating rod, the circumferential side of the driving bevel gear meshing with the bevel gear seat, a rotating wheel fixedly connected to the other end of the rotating rod, a fixing ring fixedly connected to the circumferential side of the rotating shaft, and a belt drive connection between the fixing ring and the rotating wheel. The purpose of this utility model is to provide a heat dissipation device for AC motors to solve the problem of poor heat dissipation performance of existing AC motors, which leads to damage due to overheating during long-term operation.

[0004] To improve heat dissipation efficiency, some solutions have introduced external auxiliary devices to improve heat dissipation by increasing the airflow coverage. However, they still rely on a single fan drive, and the heat dissipation effect is not ideal in high-power or high-temperature environments. Other technologies combine coolant circulation with external heat sinks. Although semiconductor cooling technology can provide directional cooling, insufficient heat dissipation at the hot end of the cooling chip can easily lead to performance degradation and make it difficult to operate stably for a long time. In addition, although existing rotor cooling solutions can reduce the temperature of the magnets, they still have problems such as high thermal resistance and a single coolant flow path, making it difficult to cope with long-term high-load conditions. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an auxiliary heat dissipation device for AC motors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary heat dissipation device for an AC motor, comprising a mounting box, a vent plate fixedly connected to the top of the mounting box, an AC motor body fixedly mounted on the top of the vent plate, a rotor mounted on the AC motor body, a speed-changing component mounted on the outer wall of the rotor outside the AC motor body, a rotating shaft rotatably connected between the two sides of the inner wall of the mounting box, a connecting component mounted on the outer wall of the rotating shaft, two mounting plates fixedly connected to the inner bottom surface of the mounting box, several auxiliary shafts rotatably connected inside the two mounting plates, a heat dissipation component mounted at one end of each auxiliary shaft, a flow divider rotatably connected to one end of the rotor via a rotary joint, a centrifugal pump fixedly connected to the back of the mounting box, a pumping component mounted inside the centrifugal pump, a cooling component mounted inside the rotor, and strong cooling components mounted on both sides of the AC motor body.

[0007] The mounting box, as the core support structure of the device, integrates heat dissipation modules such as fans, transmission gears, and coolant pipes. It provides a sealed environment to optimize airflow. Ventilation slots are provided on both sides, which are connected to the internal space through vent plates to balance air pressure and prevent dust from entering. The rotor is an important part of the AC motor, responsible for generating rotational motion. The operation of the rotor will generate heat, so it needs to be cooled in conjunction with a heat dissipation device. The distributor head evenly distributes the coolant output by the centrifugal pump to the second cavity of the rotor and collects the coolant returning to the first cavity to the heat dissipation pipe. A rotary joint is provided on the side connected to the rotor to realize dynamic sealed delivery of coolant when the rotor rotates at high speed. The centrifugal pump is responsible for driving the flow of coolant, thereby removing the heat generated by the equipment and improving the heat dissipation effect.

[0008] As a further description of the above technical solution:

[0009] The speed change assembly includes a large gear fixedly mounted on the outer wall of the rotor and located outside the AC motor body, and a small gear is connected to the outer wall of the large gear via a synchronous belt drive.

[0010] The small gear is fixedly connected to one end of the rotating shaft. The speed change assembly converts the rotor speed into a speed that is compatible with the cooling system, and matches the optimal speed range of the fan blades through the gear ratio.

[0011] As a further description of the above technical solution:

[0012] The connecting assembly includes several bevel gears 1 fixedly installed on the outer wall of the rotating shaft, and two bevel gears 2 meshing with the outer wall of the bevel gears 1.

[0013] The interior of the second bevel gear is fixedly connected to one end of the auxiliary shaft. The connecting assembly distributes the power of the rotating shaft to multiple auxiliary shafts, thereby achieving synchronous drive of multiple fans.

[0014] As a further description of the above technical solution:

[0015] The heat dissipation assembly includes a bevel gear three fixedly installed at one end of an auxiliary shaft, a bevel gear four meshing with the outer wall of the bevel gear three, and a heat dissipation shaft fixedly connected inside the bevel gear four.

[0016] The bottom end of the heat dissipation shaft is rotatably connected to the inner bottom surface of the mounting box. The heat dissipation component forms a directional airflow through the rotation of the fan blades, covering the motor housing, heat dissipation pipes, and heat dissipation fins at the hot end of the cooling chip.

[0017] As a further description of the above technical solution:

[0018] Several heat dissipation blades are fixedly installed on the outer wall of the heat dissipation shaft.

[0019] The blade tilt angle of the heat dissipation fins is matched with the rotation speed, which increases the airflow speed and expands the heat dissipation area.

[0020] As a further description of the above technical solution:

[0021] The pumping assembly includes an impeller rotatably mounted inside the centrifugal pump. One side of the impeller is fixedly connected to one end of the rotating shaft. The output end of the centrifugal pump is fixedly connected to the center of one end of the splitter head through a pipe. The input end of the centrifugal pump is fixedly connected to the outer wall of the splitter head through a heat dissipation pipe above the vent plate.

[0022] The pumping assembly uses the power of the rotating shaft to drive the impeller, which pushes the coolant from the centrifugal pump output end through the pipe into the rotor cavity. The centrifugal pump and the motor are coaxially linked, requiring no external power source. The surface of the heat dissipation pipe is increased with fins (not shown) to expand the heat dissipation area and improve the heat exchange efficiency.

[0023] As a further description of the above technical solution:

[0024] The cooling component includes a cavity 1 formed inside the rotor. A spiral guide plate is fixedly connected to the inner wall of the cavity 1. A cylinder is fixedly connected inside the spiral guide plate. A cavity 2 is formed inside the cylinder. The cavity 2 is fixedly connected to the cavity 1 through a connecting groove. The cavity 2 and the cavity 1 are adapted to the groove inside the flow divider.

[0025] The cavity serves as the main channel for coolant, and turbulence is generated through the spiral guide plate, which prolongs the contact time between the coolant and the inner wall of the rotor.

[0026] As a further description of the above technical solution:

[0027] The cooling component includes several cooling plates fixedly installed on both sides of the AC motor body, and heat dissipation fins are fixedly installed on the heat dissipation end of the cooling plate.

[0028] The cold end of the cooling element is in contact with the motor housing to directly absorb heat, while the hot end is cooled by forced airflow from the cooling fins and fan.

[0029] This utility model has the following beneficial effects:

[0030] 1. Compared with the prior art, this auxiliary heat dissipation device for AC motors, through the coordinated use of structures such as rotating shaft, speed change assembly, connecting assembly and heat dissipation assembly, can drive the gear set and bevel gear system through the motor output shaft, and synchronously drive multiple sets of heat dissipation blades to rotate without an additional power source, forming a three-dimensional airflow field covering the motor shell, the hot end of the cooling plate and the heat dissipation pipe, which significantly improves the uniformity of heat dissipation. Moreover, the cold end of the cooling plate is directly attached to the motor shell for cooling, and the hot end is cooled by forced heat dissipation through the heat dissipation fins and fan airflow, ensuring the long-term stable operation of the cooling plate and further enhancing the overall heat dissipation capacity of the motor.

[0031] 2. Compared with the prior art, this auxiliary heat dissipation device for AC motors, through the coordinated use of rotor, pumping assembly, cooling assembly and flow divider, etc., adopts a closed-loop circulation system for coolant. The coolant enters cavity one and cavity two through the impeller of the centrifugal pump for efficient heat exchange, reducing the temperature of the rotor and thus achieving heat dissipation inside the motor body. After the coolant passes through the heat dissipation pipe, the cooling blades of the fan force airflow to the surface of the pipe to dissipate heat, ensuring that the coolant is fully cooled and then re-enters the centrifugal pump for recycling, forming a highly efficient heat recovery system. Attached Figure Description

[0032] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an auxiliary heat dissipation device for an AC motor proposed in this utility model.

[0033] Figure 2 This is a three-dimensional schematic diagram of the overall structure of an auxiliary heat dissipation device for an AC motor, as proposed in this utility model, from another perspective.

[0034] Figure 3 This is a three-dimensional schematic diagram of the heat dissipation component structure of an auxiliary heat dissipation device for AC motors proposed in this utility model.

[0035] Figure 4 This is a three-dimensional schematic diagram of the connection component structure of an auxiliary heat dissipation device for an AC motor proposed in this utility model.

[0036] Figure 5 This is a three-dimensional schematic diagram of the impeller structure of an auxiliary heat dissipation device for an AC motor proposed in this utility model;

[0037] Figure 6 This is a three-dimensional schematic diagram of the internal structure of the shunt head of an auxiliary heat dissipation device for an AC motor, as proposed in this utility model.

[0038] Figure 7 This is a three-dimensional schematic diagram of the internal structure of the rotor of an auxiliary heat dissipation device for an AC motor, as proposed in this utility model.

[0039] Legend:

[0040] 1. Mounting box; 2. Vent plate; 3. AC motor body; 4. Rotor; 5. Rotating shaft; 6. Mounting plate; 7. Auxiliary shaft; 8. Flow divider; 9. Centrifugal pump; 10. Large gear; 11. Small gear; 12. Bevel gear one; 13. Bevel gear two; 14. Bevel gear three; 15. Bevel gear four; 16. Cooling shaft; 17. Cooling blades; 18. Impeller; 19. Cavity one; 20. Spiral guide plate; 21. Cylinder; 22. Cavity two; 23. Cooling plate; 24. Heat dissipation fins. Detailed Implementation

[0041] 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.

[0042] Reference Figure 1-7This utility model provides an auxiliary heat dissipation device for AC motors, comprising a mounting box 1, a vent plate 2 fixedly connected to the top of the mounting box 1, an AC motor body 3 fixedly mounted on the top of the vent plate 2, a rotor 4 mounted on the AC motor body 3, a speed-changing assembly mounted on the outer wall of the rotor 4 outside the AC motor body 3, a rotating shaft 5 rotatably connected between the two sides of the inner wall of the mounting box 1, a connecting assembly mounted on the outer wall of the rotating shaft 5, and two mounting plates 6 fixedly connected to the inner bottom surface of the mounting box 1, each mounting plate 6 having several auxiliary... Auxiliary shaft 7 has a heat dissipation component at one end. One end of rotor 4 is rotatably connected to a flow divider 8 via a rotary joint. Centrifugal pump 9 is fixedly connected to the back of mounting box 1. Pumping component is installed inside centrifugal pump 9. Cooling component is installed inside rotor 4. Both sides of AC motor body 3 are equipped with strong cooling components. Mounting box 1, as the core support structure of the device, integrates heat dissipation modules such as fans, transmission gears, and coolant pipes, providing a sealed environment to optimize airflow. Ventilation slots are opened on both sides of the mounting box, which are connected to the internal space through ventilation plates 2 to balance air pressure. To prevent dust from entering, rotor 4 is an important part of the AC motor, responsible for generating rotational motion. The operation of rotor 4 will generate heat, so it needs to be cooled with a heat dissipation device. The distributor 8 distributes the coolant output by centrifugal pump 9 evenly to cavity 22 of rotor 4 and collects the coolant in the return cavity 19 to the heat dissipation pipe. A rotary joint is provided on the side connected to rotor 4 to realize dynamic sealed delivery of coolant when rotor 4 rotates at high speed. Centrifugal pump 9 is responsible for driving the flow of coolant, thereby removing the heat generated by the equipment and improving the heat dissipation effect. Through the coordinated use of structures such as rotating shaft 5, speed change assembly, connecting assembly and heat dissipation assembly, the motor output shaft can drive the gear set and bevel gear system to drive multiple sets of heat dissipation blades 17 to rotate synchronously without an additional power source, forming a three-dimensional airflow field covering the motor shell, the hot end of cooling plate 23 and heat dissipation pipe, which significantly improves the heat dissipation uniformity. The cold end of cooling plate 23 is directly attached to the motor shell for cooling, and the hot end is cooled by forced heat dissipation through heat dissipation fins 24 and fan airflow, ensuring the long-term stable operation of cooling plate 23 and further enhancing the overall heat dissipation capacity of the motor.

[0043] The speed change assembly includes a large gear 10 fixedly mounted on the outer wall of the rotor 4 and located outside the AC motor body 3. The outer wall of the large gear 10 is connected to a small gear 11 via a synchronous belt drive. The interior of the small gear 11 is fixedly connected to one end of the rotating shaft 5. The speed change assembly converts the rotational speed of the rotor 4 into a speed that is compatible with the cooling system and matches the optimal speed range of the fan blades through the gear ratio.

[0044] The connecting assembly includes several bevel gears 12 fixedly installed on the outer wall of the rotating shaft 5. Two bevel gears 13 are meshed on the outer wall of the bevel gears 12. The interior of the bevel gears 13 is fixedly connected to one end of the auxiliary shaft 7. The connecting assembly distributes the power of the rotating shaft 5 to multiple auxiliary shafts 7 to achieve synchronous drive of multiple fans.

[0045] The heat dissipation assembly includes a bevel gear 14 fixedly mounted on one end of the auxiliary shaft 7. A bevel gear 15 is meshed with the outer wall of the bevel gear 14. A heat dissipation shaft 16 is fixedly connected inside the bevel gear 15. The bottom end of the heat dissipation shaft 16 is rotatably connected to the inner bottom surface of the mounting box 1. The heat dissipation assembly generates directional airflow through the rotation of the fan blades, covering the motor housing, heat dissipation pipes, and heat dissipation fins 24 at the hot end of the cooling plate 23. Several heat dissipation blades 17 are fixedly mounted on the outer wall of the heat dissipation shaft 16. The blade inclination angle of the heat dissipation blades 17 is matched with the rotation speed, thereby increasing the airflow speed and expanding the heat dissipation area.

[0046] The pumping assembly includes an impeller 18 rotatably mounted inside the centrifugal pump 9. One side of the impeller 18 is fixedly connected to one end of the rotating shaft 5. The output end of the centrifugal pump 9 is fixedly connected to the center of one end of the diverter head 8 through a pipe. The input end of the centrifugal pump 9 is fixedly connected to the outer wall of the diverter head 8 through a heat dissipation pipe above the vent plate 2. The pumping assembly uses the power of the rotating shaft 5 to drive the impeller 18, pushing the coolant from the output end of the centrifugal pump 9 through the pipe into the cavity 22 of the rotor 4. The centrifugal pump 9 is coaxially linked with the motor and does not require an external power source. Fins (not shown) are added to the surface of the heat dissipation pipe to expand the heat dissipation area and improve the heat exchange efficiency.

[0047] The cooling assembly includes a cavity 19 inside the rotor 4. A spiral guide plate 20 is fixedly connected to the inner wall of the cavity 19. A cylinder 21 is fixedly connected inside the spiral guide plate 20. A cavity 22 is opened inside the cylinder 21. The cavity 22 is fixedly connected to the cavity 19 through a connecting groove. The cavity 22 and the cavity 19 are adapted to the slot inside the distributor head 8. The cavity 19 serves as the main channel for the coolant. Turbulence is formed through the spiral guide plate 20, which prolongs the contact time between the coolant and the inner wall of the rotor 4.

[0048] The forced cooling component includes several cooling plates 23 fixedly installed on both sides of the AC motor body 3. The heat dissipation end of the cooling plate 23 is fixedly installed with heat dissipation fins 24. The cold end of the cooling plate 23 is in contact with the motor housing to directly absorb heat, and the hot end is forcibly cooled by the heat dissipation fins 24 and the airflow of the fan.

[0049] Working principle: First, connect the AC motor to the power supply, then start the AC motor body 3, causing its rotor 4 to rotate, which in turn drives the large gear 10 to rotate. Through the meshing transmission of the synchronous belt, the small gear 11 rotates, causing the rotating shaft 5 fixed to the small gear 11 to rotate. This causes the bevel gear 12 fixed on the rotating shaft 5 to rotate and mesh with the bevel gear 13. The bevel gear 13 drives the auxiliary shaft 7 on the mounting plate 6 to rotate. The rotation of the auxiliary shaft 7 synchronously drives the bevel gear 14 to rotate, which in turn drives the bevel gear 15 on the heat dissipation shaft 16 that meshes with it to rotate. The action of bevel gear 15 causes the heat dissipation shaft 16 to rotate, which in turn drives the heat dissipation blades 17 to rotate. This causes the heat dissipation blades 17 to stir and draw air from the openings on both sides of the mounting box 1, thereby forming an airflow. Through the cooperation of multiple fans, a three-dimensional airflow field is formed, covering the motor housing, heat dissipation pipes, and the heat dissipation fins 24 of the hot end of the cooling chip 23, significantly improving the heat dissipation area and airflow. When the motor has been used for a long time and the heat dissipation effect needs to be enhanced, the cooling chip 23 can also be activated. Its cold end directly contacts the housing for cooling, while the hot end is forced to dissipate heat through the heat dissipation fins 24 and the fan airflow, avoiding the problem of heat accumulation at the hot end in traditional semiconductor solutions and ensuring the long-term stable operation of the cooling chip 23.

[0050] Then, when the rotating shaft 5 rotates, it synchronously drives the impeller 18 in the centrifugal pump 9 to rotate. Under the action of the blades of the impeller 18, the impeller 18 agitates the coolant, which is then delivered to the output end of the centrifugal pump 9. It then enters the center of one end of the diverter head 8 through the pipe and enters the cavity 22 inside the cylinder 21 through the rotary joint. It is then conveyed from the connecting groove at the connection between the cavity 22 and the cavity 19 into the cavity 19. At this time, the coolant is guided by the spiral guide plate 20 to exchange heat with the rotor 4 and cool the inside of the AC motor body 3. After heat exchange, the coolant re-enters the diverter head 8 through the rotary joint from the cavity 19. The slot in the diverter head 8 that matches the cavity 19 allows the coolant to enter the heat dissipation pipe. Then, the cooling blades 17 of the fan force airflow to dissipate heat on the surface of the heat dissipation pipe. After that, it re-enters the input end of the centrifugal pump 9, thereby realizing efficient heat recovery of the coolant through closed-loop circulation.

[0051] 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. An auxiliary heat dissipation device for an AC motor, comprising a mounting box (1), characterized in that: A ventilated plate (2) is fixedly connected to the top of the mounting box (1). An AC motor body (3) is fixedly installed on the top of the ventilated plate (2). A rotor (4) is provided on the AC motor body (3). A speed-changing component is provided on the outer wall of the rotor (4) and outside the AC motor body (3). A rotating shaft (5) is rotatably connected between the two sides of the inner wall of the mounting box (1). A connecting component is provided on the outer wall of the rotating shaft (5). Two mounting plates (6) are fixedly connected to the inner bottom surface of the mounting box (1). Several auxiliary shafts (7) are rotatably connected inside the two mounting plates (6). A heat dissipation component is provided at one end of the auxiliary shaft (7). A flow divider (8) is rotatably connected to one end of the rotor (4) through a rotary joint. A centrifugal pump (9) is fixedly connected to the back of the mounting box (1). A pumping component is provided inside the centrifugal pump (9). A cooling component is provided inside the rotor (4). Strong cooling components are provided on both sides of the AC motor body (3).

2. The auxiliary heat dissipation device for an AC motor according to claim 1, characterized in that: The speed change assembly includes a large gear (10) fixedly installed on the outer wall of the rotor (4) and located outside the AC motor body (3), and a small gear (11) is connected to the outer wall of the large gear (10) via a synchronous belt drive.

3. The auxiliary heat dissipation device for an AC motor according to claim 1, characterized in that: The connecting assembly includes several bevel gears (12) fixedly installed on the outer wall of the rotating shaft (5), and two bevel gears (13) mesh with the outer wall of the bevel gears (12).

4. The auxiliary heat dissipation device for an AC motor according to claim 1, characterized in that: The heat dissipation assembly includes a bevel gear three (14) fixedly installed at one end of the auxiliary shaft (7), a bevel gear four (15) meshing with the outer wall of the bevel gear three (14), and a heat dissipation shaft (16) fixedly connected inside the bevel gear four (15).

5. An auxiliary heat dissipation device for an AC motor according to claim 4, characterized in that: Several heat dissipation blades (17) are fixedly installed on the outer wall of the heat dissipation shaft (16).

6. The auxiliary heat dissipation device for an AC motor according to claim 1, characterized in that: The pumping assembly includes an impeller (18) rotatably installed inside a centrifugal pump (9). One side of the impeller (18) is fixedly connected to one end of a rotating shaft (5). The output end of the centrifugal pump (9) is fixedly connected to the center of one end of a split head (8) through a pipe. The input end of the centrifugal pump (9) is fixedly connected to the outer wall of the split head (8) through a heat dissipation pipe above the vent plate (2).

7. An auxiliary heat dissipation device for an AC motor according to claim 1, characterized in that: The cooling assembly includes a cavity 1 (19) inside the rotor (4), a spiral guide plate (20) is fixedly connected to the inner wall of the cavity 1 (19), a cylinder (21) is fixedly connected inside the spiral guide plate (20), a cavity 2 (22) is opened inside the cylinder (21), the cavity 2 (22) is fixedly connected to the cavity 1 (19) through a connecting groove, and the cavity 2 (22) and the cavity 1 (19) are adapted to the slot inside the diverter head (8).

8. An auxiliary heat dissipation device for an AC motor according to claim 1, characterized in that: The cooling component includes several cooling plates (23) fixedly installed on both sides of the AC motor body (3), and the heat dissipation end of the cooling plate (23) is fixedly installed with heat dissipation fins (24).

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