High-speed motor with rotor cooling structure

Abstract

The invention discloses a high-speed motor with a rotor cooling structure, comprising a motor shell, a main shaft of the motor, a front flange component, a rear flange component, a motor stator and a motor rotor. The motor stator is sleeved in the motor shell; the motor rotor is sleeved in the motor stator; the front flange component is assembled at the front end of the motor shell to form into a front end cavity; the rear flange component is assembled at the rear end of the motor shell to form into a rear end cavity; the main shaft of the motor is sleeved in the motor rotor, and the front end and the rear end of the main shaft are respectively supported on the front flange component and the rear flange component; the motor rotor is provided with an air vent hole which communicates the front end cavity with the rear end cavity; the motor stator is provided with an air return hole which communicates the front end cavity with the rear end cavity; and the front end cavity or the rear end cavity on the main shaft of the motor is internally provided with an impeller. The high-speed motor with the rotor cooling structure can be used for cooling the motor rotor, and has high rotation precision, long service life, simple structure and convenient installation.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a high-speed motor with a rotor cooling structure. Background technique [0002] High-speed rotating mechanical equipment is widely used in national defense, metallurgy, mining, chemical industry and other fields, such as various large fans, turbo compressors, ship power systems and centrifugal compressors. High-speed rotating machinery occupies an extremely important position in my country's national economy. [0003] Traditional high-speed rotating mechanical equipment mostly uses a transmission system (belt drive, gearbox drive, etc.) to achieve speed increase, and the power source is mostly an ordinary motor. Rotating mechanical equipment using this type of transmission mode allows a lower maximum operating speed. Due to the complexity of the transmission system, the vibration and noise are large during operation, there are many fault points, and the maintenance is mo...

AI Technical Summary

Problems solved by technology

There are several disadvantages in the practical application of this scheme: 1. Because the rotor cannot be cooled, the heat is serious, and the magnetic material on the rotor will lose part of its effect under long-term high temperature; 2. The heat transmitted to the bearing by the main shaft heating The increase will affect the service life of the bearing; 3. The thermal deformation of the main shaft is serious, resulting in a change in the fit clearance with the bearing, which affects the working performance of the bearing; 4. The thermal deformation of the bearing also leads to a decrease in the rotation accuracy of the main shaft system, resulting in an increase in the vibration amplitude of the motor

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