Total-closed high-speed permanent magnet motor using liquid jet to be cooled

A permanent magnet motor, liquid spray cooling technology, used in cooling/ventilation devices, magnetic circuits, electric components, etc., can solve the problems of difficult heat dissipation, overheating, small size, etc., to increase reliability and operating life, reduce winding and Permanent magnet problem, the effect of improving the cooling effect

CN108258849AActive Publication Date: 2018-07-06HUAZHONG UNIV OF SCI & TECH
18 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-07-06

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Abstract

The invention belongs to the technical field of motors, and discloses a total-closed high-speed permanent magnet motor using liquid jet to be cooled. The permanent magnet motor comprises a motor shell, a stator, a rotor and end covers, wherein the stator and the rotor are arranged in the motor shell, the end covers are arranged at the front and back ends of the motor shell, the end covers at the front and back ends of the motor shell are both provided with wind gap shells, the wind gap shells at the front and back ends are respectively provided with a pipeline air inlet and a pipeline air outlet, the end covers at the front and back ends of the motor shell are correspondingly provided with an air passage inlet and an air passage outlet, the pipeline air outlet is communicated with the pipeline air inlet to form the circulation flow of gas in the motor, in addition, the side face of the front end of the motor shell is provided with multiple liquid jet ports distributed around the external circumference of the motor shell, the liquid jet ports are used for cooling the entered gas from the air passage inlet, and the cooling liquid ejected from the liquid jet ports is Freon, R123, R245or R141. According to the total-closed high-speed permanent magnet motor using liquid jet to be cooled, the temperature of the motor is effectively reduced, and the problems that the total-closed high-speed permanent magnet motor has high temperature, difficult heat dissipation and too-high local temperature rising of the stator and rotor are solved.
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Description

technical field

[0001] The invention belongs to the technical field of motors, and more specifically relates to a fully enclosed high-speed permanent magnet motor with liquid spray cooling. Background technique

[0002] Due to the high speed, high power density and small size, the high-speed motor can effectively save materials; due to the small moment of inertia, the dynamic response is fast; the high-speed motor can be directly connected with the working machine or load, eliminating the traditional mechanical transmission device , thus reducing noise and improving the efficiency of the transmission system. The research and application of high-speed motors meet the needs of economic development for energy saving and emission reduction. At present, it has become one of the research hotspots in the field of international electrical engineering. It has broad application prospects.

[0003] Permanent magnet motors are most suitable for high-speed motors due to their simple st...

Examples

Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0027] The present invention is a fully enclosed high-speed permanent magnet motor with liquid spray cooling, which adopts a cooling scheme in which a liquid spray port 1, a cooling air duct 3 outside the stator and a cooling air duct 7 inside the stator slot are arranged on the motor casing, and the motor casing 2 And the stator and the rotor arranged in the casing 7, the two ends of the casing...