Novel induction motor rotor

An induction motor and rotor technology, applied in asynchronous induction motors, electromechanical devices, electrical components, etc., can solve the problems of uneven axial distribution of the magnetic field, affecting the mechanical strength of the rotor, large torsional torque, etc., to eliminate torsional and axial forces , reduce vibration and noise, reduce the effect of radial electromagnetic force waves

Pending Publication Date: 2022-02-11
NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, most of the existing squirrel cage rotors with chute structure are single chute structure. Although the single chute structure rotor can improve the torque performance and reduce the high-frequency vibration and noise caused by harmonics, the single chute structure will cause The magnetic field is unevenly distributed along the axial direction, generating transverse currents, and for medium and large motors or motors with long iron cores, the single chute structure will generate a large torsional moment, which in turn will cause torsional vibration and affect the mechanical strength of the rotor

Method used

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Embodiment Construction

[0021] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0022] In order to reduce electromagnetic vibration and noise, according to figure 1 , figure 2 As shown, the present invention provides a new type of induction motor rotor, including: a motor shaft 1 and four rotors 2 that are sleeved on the motor shaft 1 and connected in sequence, and the inclined slots opened on the adjacent rotors 2 3. The directions are opposite, and their opposite endpoints coincide;

[0023] More specifically, there are squirrel cage guide bars inside the inclined groove 3 on the rotor 2 .

[0024] In a specific technical solution, the skewed slots 3 on the rotor 2 are evenly distributed along its axial direction. And preferably, the incl...

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Abstract

The invention provides a novel induction motor rotor, and the motor comprises a motor shaft and four rotors which sleeve the motor shaft and are connected in sequence, wherein the directions of skewed slots formed in the adjacent rotors are opposite, and the opposite end points of the skewed slots coincide. The motor has the advantages that due to the specific structural design of the four rotors on the motor shaft, the axial force of the first rotor and the axial force of the second rotor are mutually counteracted, the axial force of the third rotor and the axial force of the fourth rotor are mutually counteracted, and the whole rotors cannot be affected by axial vibration.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a novel induction motor rotor. Background technique [0002] Induction motor, also known as "asynchronous motor", is a device that places the rotor in a rotating magnetic field, and under the action of the rotating magnetic field, obtains a rotational torque to make the rotor rotate. [0003] The squirrel-cage rotor includes a straight-slot structure and a skewed-slot structure. Compared with the straight-slot structure, the squirrel-cage rotor with the skewed slot structure can weaken the tooth harmonic magnetic field, which is beneficial to reducing the electromagnetic vibration and noise of the motor. However, most of the existing squirrel cage rotors with chute structure are single chute structure. Although the single chute structure rotor can improve the torque performance and reduce the high-frequency vibration and noise caused by harmonics, the single chute structure will c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/18H02K17/20H02K16/02
CPCH02K16/02H02K2213/03H02K17/20H02K17/18
Inventor 杜垚崔乃东王震王山斌
Owner NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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