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A motor with synchronous cooling of stator and rotor

A stator-rotor and spiral cooling technology, which is applied in the direction of cooling/ventilation devices, electromechanical devices, electrical components, etc., can solve the problems that the heat of the motor cannot be cooled in time, the temperature difference between the inside and outside of the motor is large, and the performance of the motor is affected, so as to achieve simple structure and improve reliability Sexuality and the effect of prolonging the service life

Active Publication Date: 2021-03-23
BEIDOU AEROSPACE AUTOMOBILE BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the motor with this structure can have a good heat dissipation effect on the motor shell, the heat of the motor shaft and stator cannot be cooled in time. The temperature difference between the inside and outside of the motor is large, and the performance of the motor will still decline when the rotor temperature is high. impact, and there is a certain potential safety hazard due to the large temperature difference between the inside and outside of the motor.

Method used

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  • A motor with synchronous cooling of stator and rotor
  • A motor with synchronous cooling of stator and rotor

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Embodiment 1

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0023] see figure 1 and figure 2 , according to the motor embodiment of the synchronous cooling of the stator and rotor provided by the present invention, it includes a casing, a stator 3 arranged in the casing, a rotor 5 and a rotating shaft 4, the stator 3 is arranged on the inner wall of the casing, and the The rotor 5 is arranged on the rotating shaft 4, and the rotating shaft 4 is rotatably arranged on the casing. The casing is provided with a spiral co...

Embodiment 2

[0034] This embodiment has roughly the same structure as the first embodiment above, except that the ratio of the length of the heat-conducting medium cavity 41 to the length of the rotating shaft 4 is different. The medium chamber 41 includes a first heat-conducting medium chamber 41 and a second heat-conducting medium chamber 41 connected to each other. The inner diameter of the first heat-conducting medium chamber 41 is larger than the inner diameter of the second heat-conducting medium chamber 41. The section of the rotating shaft 4 where the medium chamber 41 is located is located in the heat exchange chamber 7 . This structure reduces the impact of the provision of the heat conduction medium chamber 41 on the mechanical strength of the rotating shaft 4 and helps to increase the heat transfer rate between the rotating shaft 4 and the heat exchange chamber 7 again.

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Abstract

A stator and rotor synchronously cooled motor comprises a casing and a stator, a rotor and a rotating shaft arranged in the casing. The casing is provided with a spiral cooling channel which encirclesthe casing, the casing is provided with a heat exchange cavity communicated with the spiral cooling channel, part of the rotating shaft is positioned in the heat exchange cavity, and the spiral cooling channel is provided with cooling medium inlet and outlet. Compared with the prior art, the stator and rotor synchronously cooled motor has the advantages that the spiral cooling channel and heat exchange cavity arranged in the casing can absorb heat of the stator and rotor via a cooling medium flowing inside, synchronous heat radiation of the stator and rotor is realized, the heat radiation effect is improved greatly, the service life of the motor can be prolonged, and the reliability of the motor is improved.

Description

technical field [0001] The invention relates to a motor, in particular to a motor with synchronous cooling of the stator and the rotor. Background technique [0002] When the motor is working, it will generate a lot of heat, mainly including stator copper loss and iron loss. Due to the internal sealing of the motor, the heat can only be dissipated to the outside through the casing. With the advancement of technology, people pass on the motor shaft. The scheme of setting spliced ​​rotating shaft and filling medium to improve heat dissipation efficiency, but the rotating shaft adopts the spliced ​​shaft method, fills part of the shaft with cooling medium, and mechanically connects the shaft to the main shaft. The problem of structural strength, especially when the motor is running at high speed, has great hidden dangers. [0003] Another example is the patent application with the application number: 201810602824.4 published on November 23, 2018. A heat dissipation motor inclu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/20H02K9/19
CPCH02K5/20H02K9/19
Inventor 刘贵生吕佳明刘志钢吴庆国许嘉慧吕学文
Owner BEIDOU AEROSPACE AUTOMOBILE BEIJING CO LTD