Rotor core, rotor, motor and compressor

A rotor iron core and rotor technology, applied in the field of compressors, can solve the problems of small motor direct-axis inductance value and quadrature-axis inductance value, high manufacturing and production difficulty, affecting motor performance, etc. The effect of large inductance value, improved performance, and ease of manufacture and production

Active Publication Date: 2016-05-25
GUANGDONG MEIZHI COMPRESSOR +1
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the permanent magnet embedded motors in the related art, some vibrations and noises are relatively large, while others have complex structures, are difficult to manufacture and produc

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rotor core, rotor, motor and compressor
  • Rotor core, rotor, motor and compressor
  • Rotor core, rotor, motor and compressor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.

[0038] This application is based on the inventor's discovery and understanding of the following facts and problems:

[0039] The permanent magnet embedded motor in the related technology has greater vibration and noise, especially the permanent magnet embedded motor with fractional slots. Due to the higher air gap harmonic content, the vibration and noise are often higher than the permanent magnets with integer slots. In-type motors are larger. When the permanent magnet embedded motor is used as the drive motor o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Remanenceaaaaaaaaaa
Coercivityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a rotor core, a rotor, a motor and a compressor. The outer contour of the rotor core comprises d-axis arc sections, q-axis arc sections and a plurality of connecting sections, the circle centers of the d-axis arc sections are overlapped with the center of the rotor core, and the d-axis of the rotor core penetrates through the centers of the d-axis arc sections; the circle centers of the q-axis arc sections are overlapped with the center of the rotor core, and the q-axis of the rotor core penetrates through the centers of the q-axis arc sections; the connecting sections are connected between the adjacent d-axis arc sections and q-axis arc sections, and at least one of the connecting sections is a circular arc which has a circle center located on the outer side of the rotor core and is arranged adjacent to the q-axis, wherein the semi-diameters of the d-axis arc sections are Rd, the semi-diameters of the q-axis arc sections are Rq, and Rq/Rd is greater than 0.9 and smaller than or equal to 1. According to the rotor core disclosed by the invention, the harmonic content of gap flux density can be reduced, and the rotor core is simple in structure, easy to manufacture and produce and high in rate of finished products; and meanwhile, the operation performance of a motor under a weak magnetic working condition can be improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a rotor core, a rotor with the rotor core, a motor with the rotor and a compressor with the motor. Background technique [0002] In the permanent magnet embedded motors in the related art, some of them have relatively large vibration and noise, others have complex structures, are difficult to manufacture and produce, and have a low yield rate, and the direct-axis inductance and quadrature-axis inductance of the motor are small, which affects the motor. Performance under field weakening operating conditions. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention needs to provide a rotor core, which can not only optimize the distribution of air-gap magnetic density, reduce the harmonic content of air-gap magnetic density, but also have a simple structure, easy manufa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02K1/26H02K1/27
CPCH02K1/265H02K1/2733
Inventor 孙国伟于明湖虞阳波
Owner GUANGDONG MEIZHI COMPRESSOR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products