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Rotor and motor with same

A technology of rotor and rotor core, which is applied to synchronous motors with stationary armatures and rotating magnets, electric components, electrical components, etc. Low, q-axis inductance improvement effect

Pending Publication Date: 2021-11-09
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a rotor and a motor with it, so as to solve the problem of low motor efficiency in the prior art

Method used

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  • Rotor and motor with same
  • Rotor and motor with same
  • Rotor and motor with same

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Embodiment Construction

[0028] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0030] In the present invention, in the absence of a contrary statement, the used orientation words such as "up and down" usually refer to the direction shown in the drawings, or refer to the vertical, vertical or gravity direction Similarly, for the convenience of understanding and description, "left and right" usually refer to the left and right shown in the drawings; The words are not used to limit the invention.

[0031] In order to solve the problem of...

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Abstract

The invention provides a rotor and a motor with the same. The rotor comprises a rotor iron core which is provided with a mounting hole, a plurality of groups of mounting parts and a first magnetic isolation groove, wherein the mounting hole is used for mounting a rotating shaft, the plurality of groups of mounting parts are arranged at intervals along the circumferential direction of the mounting hole, and along the radial direction of the rotor iron core, the first magnetic isolation groove is located between the mounting hole and the multiple groups of mounting parts; and a plurality of first permanent magnets, wherein each group of mounting parts comprises at least two mounting grooves which are arranged at intervals along the circumferential direction of the rotor iron core, each mounting groove extends along the radial direction of the rotor iron core, and at least one first permanent magnet is arranged in each mounting groove; in two adjacent groups of mounting parts, the first permanent magnet arranged in one mounting groove in one group of mounting parts and the first permanent magnet arranged in the other mounting groove adjacent to the mounting groove in the other group of mounting parts form a magnetic pole. According to the invention, the problem of lower motor efficiency in the prior art is effectively solved.

Description

technical field [0001] The present invention relates to the technical field of motors, in particular to a rotor and a motor having the same. Background technique [0002] At present, due to the sharp price increase of metal materials, screw compressors are developing in the direction of high power density and small volume. Therefore, the development of screw compressors with high power density is the future development trend. Among them, the permanent magnet synchronous motor used in the screw compressor usually adopts a built-in permanent magnet structure, and the rotor is excited by the magnetic steel. The greater the excitation provided by the rotor, the greater the output of the motor under the same current, and the higher the efficiency of the motor. However, the outer diameter and stack height of the rotor limit the magnetic field strength on the rotor side and cannot increase infinitely. [0003] In the prior art, the magnetic-increased built-in tangentially adjustab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/28H02K21/14
CPCH02K1/276H02K1/2766H02K1/2773H02K1/28H02K21/14H02K2213/03
Inventor 赖涛卢素华沈静文韦松韩允梅
Owner GREE ELECTRIC APPLIANCES INC