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motor with heat sink

A heat dissipation device and motor shaft technology, applied in electromechanical devices, cooling/ventilation devices, electrical components, etc., can solve problems such as increased rotor temperature, motor heating, and reduced working life of permanent magnets, so as to improve axial air flow and heat dissipation Effect improvement, simple structure effect

Active Publication Date: 2019-04-19
THE UNIV OF NOTTINGHAM NINGBO CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For AC motors, especially permanent magnet synchronous motors, with the increase of motor rotor speed, the loss of rotor core and magnetic sheet will lead to the increase of rotor temperature, which not only reduces the working life of permanent magnets, causes the motor to heat up, but also restricts the Motor output power
[0003] In order to improve the heat dissipation effect of the motor rotor, there is currently a scheme in which a fan is installed in the motor to dissipate heat from the motor rotor. For example, the Chinese patent No. 200810167793.0 discloses an air cooling system for a motor, but in this scheme, the fan and The motor rotor rotates synchronously, and the airflow generated by the fan has limited heat dissipation effect on the motor rotor

Method used

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Depend on figure 1 As shown, the present invention has a motor with a cooling device. The motor includes a housing 1, and a motor shaft 2, a motor stator 3 and a motor rotor 4 are arranged in the housing 1. The motor stator 3 includes a stator winding, and the motor The rotor 4 is fixedly sleeved on the motor shaft 2 so that the motor rotor 4 and the motor shaft 2 rotate synchronously, and the motor rotor 4 is located in the middle of the motor stator 3 .

[0016] The motor also includes a fan 5 for cooling the motor rotor 4 , the fan 5 is sleeved on the motor shaft 2 through a bearing 505 , so that the fan 5 can freely rotate on the motor shaft 2 .

[0017] When the motor is working, the stator winding is energized to drive the motor rotor 4 and the fan 5 to rotate, so that the motor rotor 4 and the fan 5 rotate in opposite d...

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Abstract

The invention discloses a motor with a heat dissipation device. The motor comprises a casing body. A motor shaft, a motor stator and a motor rotor are arranged in the casing body. The motor stator comprises a stator winding. The motor rotor is fixedly sleeved on the motor shaft. The motor further comprises a fan which is used for dissipating the heat of the motor rotor. The fan is rotatably sleeved on the motor shaft. When the motor is working, the motor rotor and the fan rotate in opposite directions. According to the invention, the heat dissipation effect of the fan for the motor rotor is great.

Description

technical field [0001] The invention relates to a motor with a cooling device. Background technique [0002] As a kind of power equipment, motors are widely used in important fields such as transportation, national defense, and aerospace. Nowadays, advanced technology puts forward high power density, high efficiency and high reliability requirements for the motor, but with the increase of the output power and speed of the motor, the heat dissipation and high temperature of the motor rotor have become important factors restricting the development of motor technology . For AC motors, especially permanent magnet synchronous motors, as the motor rotor speed increases, the loss of the rotor core and magnetic sheets will lead to an increase in rotor temperature, which not only reduces the working life of the permanent magnets, causes the motor to heat up, but also restricts the temperature of the motor. The output power of the motor. [0003] In order to improve the heat dissip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K9/06
CPCH02K9/06
Inventor 张何克里斯·杰拉德王天昊李静徐壮赵伟铎施博闻戴维刘传
Owner THE UNIV OF NOTTINGHAM NINGBO CHINA