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Rotor structure and motor

A technology of rotor structure and positioning structure, applied in the direction of magnetic circuit shape/style/structure, electromechanical devices, electrical components, etc., can solve problems such as the decline of magnetization performance, avoid offset, improve suspension accuracy, and avoid coaxiality. The effect of anomalous deviations

Active Publication Date: 2022-04-12
GREE ELECTRIC APPLIANCES INC +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The existing permanent magnet is a ring structure with the front and rear short axes cooperating with the permanent magnet. The permanent magnet can be offset along the circumferential direction, while the permanent magnet is in a parallel magnetization mode. Once the permanent magnet produces an offset angle θ, the corresponding magnetization direction is also The θ angle will be generated, and the magnetization performance will decrease

Method used

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  • Rotor structure and motor
  • Rotor structure and motor
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Embodiment Construction

[0029] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0030] This solution provides a rotor structure and a motor. The motor is a high-speed permanent magnet motor. The rotor structure includes a mandrel 100 and a permanent magnet 200 for sleeve connection with the mandrel 100. The mandrel 100 adopts an integral structure instead of The existing mandrel 100 of the multi-segment struct...

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Abstract

The present application generally relates to the technical field of electric motors, and in particular, relates to a rotor structure and a motor. The rotor structure includes a mandrel and a permanent magnet for sleeve connection with the mandrel. The mandrel is an integral structure, replacing The existing multi-segment mandrel structure avoids abnormal coaxiality deviation and improves the suspension accuracy of the rotor structure. The mandrel is provided with a first positioning structure, and the permanent magnet is provided with a second positioning structure. The first positioning structure is used to cooperate with the second positioning structure to limit the circumferential rotation of the permanent magnet, avoid the deviation of the magnetization direction of the permanent magnet, and ensure the reliability of the operation of the rotor structure.

Description

technical field [0001] The present application generally relates to the field of motor technology, and in particular, to a rotor structure and a motor. Background technique [0002] The magnetic suspension motor uses the electromagnetic force of the magnetic suspension bearing to suspend the motor rotor in the air, so that there is no mechanical contact between the motor rotor and the motor stator, and there is no mechanical friction. It is a low-loss, high-performance motor. [0003] The existing permanent magnet is a ring-shaped structure with the front and rear short axes matched with the permanent magnet. The permanent magnet can be offset along the circumferential direction, while the permanent magnet is magnetized in parallel. The θ angle will be generated, and the magnetization performance will decrease. SUMMARY OF THE INVENTION [0004] A series of concepts in simplified form have been introduced in the Summary section, which are described in further detail in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/276H02K1/27H02K1/24H02K1/32
CPCH02K1/27H02K1/24H02K1/325
Inventor 林学明伍尚权王周叶曹俊辉王志强
Owner GREE ELECTRIC APPLIANCES INC
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