Low temperature rise motor with high heat dissipation capability

Abstract

The utility model relates to the technical field of motors, in particular to a low temperature rise motor with high heat dissipation capability, which comprises a motor body, a heat dissipation assembly and a protective cover, a heat dissipation assembly is arranged at the rear end of the motor body and comprises a driving gear, a rotating shaft frame, a driven gear shaft, an acceleration gear, a fan gear shaft and a heat dissipation fan; a protective cover is arranged outside the heat dissipation assembly. The motor drives the driving gear to rotate, the rotating driving gear drives the driven gear shaft and the acceleration gear to rotate, and the rotating acceleration gear drives the fan gear shaft to rotate, so that rotation of the cooling fan connected with the fan gear shaft is achieved, the gear transmission process is accelerated twice through a specific transmission structure, and the cooling efficiency is improved. Therefore, even if the motor rotates at a low speed, the cooling fan can still keep a high rotating speed, and the efficient cooling function of the motor is further realized.

Description

Technical Field

[0001] This utility model relates to the field of electric motor technology, and in particular to a low-temperature electric motor with high heat dissipation capacity. Background Technology

[0002] With economic development and the increasing prominence of energy issues, low-speed permanent magnet synchronous motor technology has gradually matured and been widely applied. On the one hand, the country is promoting variable frequency permanent magnet motor technology to achieve energy conservation and consumption reduction. On the other hand, various industries are constantly raising their performance requirements for motors, such as requiring motors with characteristics such as low speed and high torque, simple structure, high power factor, high efficiency, small size, low noise, and high reliability.

[0003] In existing electric motors, the cooling fan is directly connected to the motor shaft. When the motor runs at low speed, the fan speed is low, resulting in insufficient cooling airflow and poor heat dissipation. However, at this time, the motor may generate a lot of heat due to various reasons. Some motors are not designed to fully consider the heat dissipation requirements under low-speed conditions. These factors will cause the internal temperature of the motor to rise rapidly. If it runs at low speed for a long time and the heat dissipation is poor, it will affect the performance and service life of the motor, and may even damage the motor due to overheating. Utility Model Content

[0004] To overcome the problem of low fan speed and poor heat dissipation at low speeds caused by the direct connection between the cooling fan and the motor shaft in existing electric motors, this utility model provides a low-temperature motor with high heat dissipation capacity. The motor shaft and the fan are connected through a specific acceleration mechanism, which enables the fan to have a high speed even when the motor is running at low speed, thereby generating a large air volume and achieving efficient heat dissipation.

[0005] The technical solution of this utility model is as follows:

[0006] A high-heat-dissipation-capacity cryogenic motor includes a motor body, a heat dissipation assembly, and a protective cover. The heat dissipation assembly is located at the rear end of the motor body. The protective cover is located outside the heat dissipation assembly. The heat dissipation assembly includes a drive gear, a shaft bracket, a driven gear shaft, an acceleration gear, a fan gear shaft, and a cooling fan. The drive gear is mounted on the shaft of the motor body. The shaft bracket is fixedly connected to the rear end of the motor body. The driven gear shaft is rotatably connected to the shaft bracket and is driven by the drive gear to form a vertical shaft transmission acceleration mechanism. The acceleration gear is fixedly mounted on the driven gear shaft and is driven by the fan gear shaft to form a vertical shaft transmission acceleration mechanism. The cooling fan is fixedly located at the rear of the fan gear shaft. With this configuration, when the motor is working, the motor shaft drives the drive gear to rotate, and the drive gear drives the cooling fan to rotate rapidly through two sets of vertical shaft transmission acceleration mechanisms, achieving efficient heat dissipation.

[0007] Furthermore, in the aforementioned high-heat-dissipation-capacity cryogenic motor, the motor body includes a casing, a base, and heat dissipation fins; bases are provided on both sides of the bottom of the casing, and heat dissipation fins are arranged in groups on the surface of the casing; the casing, base, and heat dissipation fins are integrally formed. Therefore, not only is the structural strength high, but the thermal resistance between the heat dissipation fins and the casing is also low, which is beneficial for heat dissipation.

[0008] Furthermore, in the aforementioned cryogenic motor with high heat dissipation capacity, the shaft bracket is fixedly connected to the housing by bolts. Using bolts to fix the shaft bracket provides high connection strength and is easy to implement.

[0009] Furthermore, in the aforementioned high heat dissipation capacity low-temperature motor, in order to reduce friction, both ends of the driven gear shaft are connected to bearings on the rotating shaft frame.

[0010] Furthermore, in the aforementioned high-heat-dissipation-capacity low-temperature electric motor, the axis of the fan gear shaft coincides with the axis of the motor body's rotating shaft. This allows for a design that maximizes the size of the cooling fan, resulting in a larger airflow.

[0011] Furthermore, in the aforementioned cryogenic motor with high heat dissipation capacity, the protective cover includes a protective cover body; the protective cover body is fixedly connected to the housing by screws. This not only ensures high reliability but also facilitates implementation.

[0012] Furthermore, in the aforementioned high-heat-dissipation-capacity low-temperature electric motor, the heat dissipation fins are arranged along the axial direction of the motor and are evenly distributed in groups in the circumferential direction. Arranging the heat dissipation fins along the axial direction of the motor facilitates airflow, thereby improving heat dissipation. Furthermore, corresponding to the heat dissipation fins, the front end of the protective cover body is provided with groups of guide strips; these guide strips are embedded in the gaps between adjacent heat dissipation fins, forming airflow channels. Thus, when the motor is operating, the cool air generated by the cooling fan flows along the airflow channels, resulting in better heat exchange.

[0013] Compared with the prior art, this utility model sets up a heat dissipation component with a specific structure. The motor shaft drives the drive gear to rotate, the rotating drive gear drives the driven gear shaft and the acceleration gear to rotate, and the rotating acceleration gear drives the fan gear shaft to rotate, thereby realizing the rotation of the cooling fan connected to the fan gear shaft. Since the gear transmission process has two accelerations, the cooling fan can still maintain a high speed even when the motor is rotating slowly, thus realizing the high-efficiency heat dissipation function of the motor. Attached Figure Description

[0014] Figure 1 This is a side view of the three-dimensional structure of the motor in Embodiment 1 of this utility model;

[0015] Figure 2This is a schematic diagram of the overall bottom-view three-dimensional structure of Embodiment 1 of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the electric motor body and heat dissipation assembly of Embodiment 1 of this utility model;

[0017] Figure 4 This is a schematic diagram of the overall exploded three-dimensional structure of Embodiment 1 of this utility model;

[0018] Figure 5 This is a side view of the three-dimensional structure of the motor in Embodiment 2 of this utility model.

[0019] The markings in the attached diagram are as follows: 1. Motor body; 2. Protective cover; 3. Heat dissipation assembly; 101. Housing; 102. Base; 103. Heat dissipation fins; 201. Protective cover body; 202. Air guide bar; 301. Drive gear; 302. Shaft bracket; 303. Driven gear shaft; 304. Accelerator gear; 305. Fan gear shaft; 306. Cooling fan. Detailed Implementation

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this should not be construed as limiting the present invention.

[0021] Example 1:

[0022] like Figures 1-4 As shown, a high-heat-dissipation-capacity cryogenic motor includes a motor body 1, a heat dissipation assembly 3, and a protective cover 2. The heat dissipation assembly 3 is located at the rear end of the motor body 1. The protective cover 2 is located outside the heat dissipation assembly 3. The heat dissipation assembly 3 includes a drive gear 301, a shaft bracket 302, a driven gear shaft 303, an acceleration gear 304, a fan gear shaft 305, and a cooling fan 306. The drive gear 301 is mounted on the shaft of the motor body 1. The shaft bracket 302 is fixedly connected to the rear end of the motor body 1. The driven gear shaft 303 is rotatably connected to the shaft bracket 302 and is driven by the drive gear 301 to form a vertical shaft transmission acceleration mechanism. The acceleration gear 304 is fixedly mounted on the driven gear shaft 303 and is driven by the fan gear shaft 305 to form a vertical shaft transmission acceleration mechanism. The cooling fan 306 is fixedly mounted at the rear of the fan gear shaft 305.

[0023] In this embodiment, the motor body 1 includes a housing 101, a base 102, and heat dissipation fins 103; the housing 101 has bases 102 on both sides of its bottom, and heat dissipation fins 103 are arranged in groups on the surface of the housing 101; the housing 101 is integrally formed with the bases 102 and the heat dissipation fins 103.

[0024] In this embodiment, the rotating shaft frame 302 is fixedly connected to the housing 101 by bolts.

[0025] In this embodiment, both ends of the driven gear shaft 303 are connected to bearings on the rotating shaft bracket 302.

[0026] In this embodiment, the axis of the fan gear shaft 305 coincides with the axis of rotation of the motor body 1.

[0027] In this embodiment, the protective cover 2 includes a protective cover body 201; the protective cover body 201 is fixedly connected to the housing 101 by screws.

[0028] In this embodiment, the heat dissipation fins 103 are arranged along the axial direction of the motor and are evenly distributed in groups in the circumferential direction. Corresponding to the heat dissipation fins 103, the front end of the protective cover body 201 is provided with groups of guide strips 202; the guide strips 202 are embedded in the gap between two adjacent heat dissipation fins 103 to form a heat dissipation channel for high-speed airflow.

[0029] When using this motor, the drive gear 301 rotates through the shaft of the motor body 1. The rotating drive gear 301 drives the driven gear shaft 303 and the acceleration gear 304 to rotate, achieving the first acceleration. The rotating acceleration gear 304 drives the fan gear shaft 305 to rotate, achieving the second acceleration. This enables the cooling fan 306 connected to the fan gear shaft 305 to rotate. Because there are two accelerations in the gear transmission process, the cooling fan 306 can still maintain a high speed even when the motor is rotating at a slow speed, thereby achieving efficient heat dissipation.

[0030] Example 2

[0031] Based on Example 1, such as Figure 5 As shown in Embodiment 2, the protective cover body 201 is fixedly connected to the housing 101 by screws; corresponding to the heat dissipation fins 103, the front end of the protective cover body 201 is provided with a group of guide strips 202; the guide strips 202 are embedded in the gap between two adjacent heat dissipation fins 103 to form an airflow channel.

[0032] In Example 2, the protective cover body 201 is used to protect the structure of the heat dissipation component 3 and improve its impact resistance, while the guide strip 202 is embedded in the gap between the heat dissipation fins 103, so that the cold air flows along the airflow channel and the heat exchange effect is good.

[0033] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this application.

Claims

1. A low temperature rise motor with high heat dissipation capacity, comprising a motor body (1), a heat dissipation assembly (3), characterized in that: The protective cover (2) is arranged outside the heat dissipation assembly (3); the heat dissipation assembly (3) comprises a driving gear (301), a rotating shaft support (302), a driven gear shaft (303), an acceleration gear (304), a fan gear shaft (305) and a heat dissipation fan (306); the driving gear (301) is arranged on the rotating shaft of the motor body (1); the rotating shaft support (302) is fixedly connected with the rear end of the motor body (1); the driven gear shaft (303) is rotatably connected with the rotating shaft support (302) and is in transmission connection with the driving gear (301) to form a vertical shaft transmission acceleration mechanism; the acceleration gear (304) is fixedly arranged on the driven gear shaft (303) and is in transmission connection with the fan gear shaft (305) to form a vertical shaft transmission acceleration mechanism; and the heat dissipation fan (306) is fixedly arranged at the rear of the fan gear shaft (305).

2. The high-thermal-dissipation low-temperature-rise motor according to claim 1, characterized in that: The motor body (1) comprises a casing (101), a base (102) and heat dissipation fins (103); the bottom of the casing (101) is provided with the base (102) on both sides; and the surface of the casing (101) is provided with the heat dissipation fins (103) in groups; and the casing (101), the base (102) and the heat dissipation fins (103) are integrally formed.

3. The high-thermal capability, low temperature rise electric motor of claim 2, wherein: The rotating shaft support (302) is fixedly connected with the casing (101) through bolts.

4. The high-thermal-dissipation low-temperature-rise motor according to claim 3, characterized in that: The both ends of the driven gear shaft (303) are connected with bearings on the rotating shaft support (302).

5. A high heat dissipating capacity low temperature rise electric motor as claimed in any one of claims 1 to 4, wherein: The axis of the fan gear shaft (305) coincides with the axis of the rotating shaft of the motor body (1).

6. The high-thermal capability, low temperature rise electric motor of claim 2, wherein: The protective cover (2) comprises a protective cover body (201); and the protective cover body (201) is fixedly connected with the casing (101) through screws.

7. The high-thermal capability, low temperature rise electric motor of claim 6, wherein: The heat dissipation fins (103) are arranged along the axial direction of the motor and are uniformly distributed in groups in the circumferential direction.

8. The high-thermal capability, low temperature rise electric motor of claim 7, wherein: Corresponding to the heat dissipation fins (103), the front end of the protective cover body (201) is provided with guide strips (202) in groups; the guide strips (202) are embedded in the gaps between adjacent two heat dissipation fins (103) to form air flow channels.

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