Cooling structure of internal circulation evaporative cooling motor
A technology of evaporative cooling and motor cooling, applied in cooling/ventilation devices, magnetic circuit shape/style/structure, electromechanical devices, etc., can solve the problems of rotor temperature rise, high power and large torque, etc., to improve cooling effect, high-efficiency cooling, and the effect of cooling efficiency improvement
Active Publication Date: 2022-04-12
CRRC YONGJI ELECTRIC CO LTD
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Problems solved by technology
[0005]
(3) High power and large torque: The increase in the running speed and carrying capacity of rail vehicles requires the power and torque of traction motors to be increased
This evaporative cooling method only cools the stator of the motor, and the rotor part of the motor does not adopt cooling measures, so the problem of rotor temperature rise cannot be solved
Method used
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specific Embodiment approach
[0042] In order to achieve the above cooling method, the present invention provides a specific embodiment, specifically as follows:
[0043] An internal circulating evaporation cooling motor cooling structure, including a liquid cooling structure including an inner end cap 6 on both ends of the interior of the seat 1 of the motor, which is spaced apart from the outer end of the stator 3, respectively. 1 The air outlet 11 and the back liquid opening 12, the motor cooling structure further comprises a gas cooling structure;
[0044] The liquid cooling structure further includes a sealing cylinder 2 14 having an inner edge of the stator tootion plate 13 and the inner edge of the relative inner end cap 6, at least one axial penetration of the liquid cooling pipe 15 (liquid) Cooling passage), the machine's seat 1, the inner end cap 6 of the two ends, and the sealing cylinder 2 14 enclose the independent sealed cavity of both ends of the stator 3, each of which can communicate both ends...
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The invention relates to a cooling structure of an internal circulation evaporative cooling motor. The cooling structure comprises liquid cooling and gas cooling. Independent sealing cavities are formed between two end faces of a stator of the motor and a base and between the two end faces of the stator and opposite inner end covers respectively, evaporative cooling working media are injected into the sealing cavities in the two ends, the stator is provided with a liquid cooling channel in the axial direction, and circulating cooling of the stator part of the motor is achieved through an external evaporative cooling circulating system. The stator of the motor and the sealed cavities at the two ends are axially provided with gas cooling channels, the rotor is axially provided with a rotor ventilation channel, and an air cooling circulation loop is formed among the gas cooling channels, air gaps among the rotor and the stator and the rotor ventilation channel. The liquid cooling pipe is arranged at the yoke part of the stator iron core, and the liquid cooling pipe is attached to the iron core in a cold pressing mode. And the yoke part of the stator core is provided with an air cooling pipe to form a stator cooling air path structure. A rotor ventilating duct is arranged at the yoke part of a rotor core, and circulating air of a rotor part is cooled by an evaporative cooling medium in a stator, so that temperature rise of the rotor part is reduced.
Description
Technical field [0001] The present invention relates to the field of traction motor cooling structures, and in particular, an internal circulation evaporation cooling motor cooling structure. Background technique [0002] In recent years, with the rapid development of rail transit at home and abroad, new technologies in this area also show faster development trends. The traction motor is one of the core components of the rail transportation vehicle, used to tract the vehicle operation and brake, with the advancement of technology, the following aspects of the rail transit traction motor are getting higher and higher: [0003] (1) The shape is compact: Since the traction motor is mounted on the underside of the steering frame, the outer dimensions of the traction motor are becoming smaller and smaller as a tendency of the traction motor. [0004] (2) Light weight: The weight of the traction motor can not only improve the operating stability of the vehicle, but also increased syste...
Claims
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IPC IPC(8): H02K9/20H02K9/193H02K9/04H02K5/20H02K1/20H02K1/32H02K5/10
CPCY02T10/64H02K1/20H02K5/10H02K9/04H02K1/32H02K9/193H02K5/20H02K9/20
Inventor 张江涛吴楠蔡晓孙德强倪伟李嘉宾
Owner CRRC YONGJI ELECTRIC CO LTD