A fully enclosed motor self-ventilating cooling structure with internal and external double circulation
A cooling structure and fully enclosed technology, which is applied in the direction of cooling/ventilation devices, magnetic circuit shape/style/structure, electromechanical devices, etc., can solve the problems of complex liquid cooling system and high sealing requirements of cooling system, and achieve simple maintenance and solution Increased temperature and improved safety
Active Publication Date: 2019-08-02
CRRC YONGJI ELECTRIC CO LTD
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Problems solved by technology
[0004] In order to solve the technical problems of the current fully enclosed motor cooling technology that the liquid cooling system is relatively complicated and the sealing performance of the cooling system is high, the invention provides a fully enclosed motor self-ventilating cooling structure with internal and external double circulation
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[0020] High-efficiency cooling internal and external circulation motor ventilation cooling structure, including machine base 1, front end cover 2, rear end cover 3, stator 4, rotor 5; front end cover 2 is fixedly installed on the front face of machine base 1; rear end cover 3 is fixed on The rear end face of the base 1; the end face of the base 1 is provided with stator axial ventilation holes 7 and rotor axial ventilation holes 8, and the rotor radial ventilation holes 9 are opened inside; the inner surface of the stator 4 and the outer circle of the rotor 5 There is an axial air gap 10 between the surfaces; the end surface of the rotor 5 is penetrated with an axial air duct 11; the fan 6 is installed in the front cavity of the frame 1, and the fan 6 is installed and fixed on the front of the rotor 5, and the front end Cover 2 forms a labyrinth seal, and the labyrinth structure is as follows Figure 5 As shown, the fan structure is as Image 6 As shown; wind baffles 12 are r...
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The invention relates to the technical field of ventilation and cooling of a motor, particularly to an internal-external dual-circulating type self-ventilation cooling structure of a totally-enclosed motor. With the self-ventilation cooling structure, technical problems of complicated liquid cooling system and high sealing performance of the cooling system of the existing totally-enclosed motor can be solved. The self-ventilation cooling structure is composed of a base, a front end cover, a rear end cover, a stator, and a rotor. A plurality of stator axial ventilation holes and a plurality of rotor axial ventilation holes are formed in a base shell, wherein the plurality of stator axial ventilation holes and the plurality of rotor axial ventilation holes penetrate the front end surface and the rear end surface of the base shell; a rotor radial ventilation hole is formed in the inner wall of the base shell; and a plurality of axial air ducts are formed in the end surface of the rotor, wherein the axial air ducts penetrate the front side and the rear side of the rotor. According to the self-ventilation cooling structure based on the novel design, characteristics of high efficiency, energy conservation, high security and reliability, and simple maintenance of the totally-enclosed motor can be realized; problems of high temperature rise and local over heating of the existing motor can be solved; and security, reliability, and maintainability of the motor can be improved substantially.
Description
technical field [0001] The invention relates to the technical field of motor ventilation and cooling, in particular to a self-ventilating and cooling structure of a fully enclosed motor with internal and external double circulation. Background technique [0002] At present, the most widely used cooling structure of the motor is an air cooling system using air as the cooling medium. The air-cooled motor has a simple structure and low cost, but the disadvantage is that the cooling effect of the air is not good. The motor adopts a fully sealed structure, which can effectively prevent foreign matter such as dust, metal powder, moisture, acid and alkali from entering the motor, and avoid abnormal operation of the motor. Based on this, it is necessary to invent a highly efficient fully enclosed motor ventilation cooling structure to meet the application requirements of the fully enclosed motor for the cooling system. [0003] The cooling structure of the existing fully enclosed ...
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IPC IPC(8): H02K5/20H02K1/32H02K9/04
CPCH02K1/32H02K5/20H02K9/04
Inventor 贾喜勤任延生刘永强姬春霞倪伟
Owner CRRC YONGJI ELECTRIC CO LTD