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

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.

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...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a fully enclosed high-speed permanent magnet motor with liquid spray cooling. Inflate gas to circulate and cool the motor, thereby solving the technical problems of small size, difficult heat dissipation and local overheating of high-speed permanent magnet motors used in fully enclosed systems such as turbo generators, waste heat generators, and air compressors

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