Magnetic-levitation motor pure air-cooling heat dissipation structure with two impellers

Abstract

A magnetic-levitation motor pure air-cooling heat dissipation structure with two impellers comprises a front axial bearing, a front impeller thrust disc, a front radial bearing, a main case, stators, a rotor, a rear radial bearing, a front impeller thrust disc and a rear axial bearing. The main case is provided with a radiating fin and a main case air hole structure; each stator is provided with a stator main case air flue, an axial stator air hole, a radial stator air hole and a stator and rotor air-gap structure. Air pressure is formed by operation of the front impeller thrust disc and the rear impeller thrust disc, cooling air enters the radial stator air flue from the main case air flue with one part flowing via stator and rotor air gap and one part flowing via the axial stator air hole and the rest flowing the stator and main case air flue, and air flow confluence is pumped to be discharged from a motor via the front impeller thrust disc and the rear impeller trust disc. A corresponding draught fan is omitted by the adoption of the impeller thrust discs, cooling structure of the motor is simplified, advantages of axial air flow and radio air flow are combined, and cooling efficiency is improved.

Description

technical field [0001] The invention relates to a magnetic levitation motor, in particular to a pure air-cooled heat dissipation structure of a magnetic levitation motor with two impellers. Background technique [0002] When the motor is running, the electrical loss and mechanical loss will generate heat, which will cause the temperature rise of each part of the motor. Excessive temperature rise may lead to burning of motor windings, decrease in permeability of silicon steel sheets, loss of magnetism of permanent magnets, etc. The heat dissipation of the motor plays a vital role in the stable operation of the motor. [0003] The application number is CN201320541108.2, the application date is 2013.09.02, and the Chinese utility model patent named a magnetic levitation permanent magnet synchronous high-speed motor discloses a magnetic levitation permanent magnet synchronous high-speed motor. The heat dissipation ventilation channel is reserved, and fan blades are installed on...

AI Technical Summary

Problems solved by technology

However, this patent only realizes the axial and radial cooling of the stator through the gap between the stator and the rotor, and the cooling effect on the inside of the stator is poor, resulting in uneven cooling of the stator

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