Motor rotor and motor

A technology of rotors and rotor cores, applied in electrical components, electromechanical devices, electric components, etc., can solve problems such as increasing the mechanical strength of rotors, achieve the effects of improving motor efficiency, reducing motor noise, and improving operating stability

Active Publication Date: 2020-09-22
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent document CN104795909A discloses a surface-embedded permanent magnet motor structure for air compressors with compact structure, high speed, high mechanical strength, and low harmonic loss. This patent focuses on explaining that the surface-embedd

Method used

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Experimental program
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Effect test

Embodiment 1

[0065] Such as Figure 1-6 As shown, the rotor of the motor according to Embodiment 1 of the present invention has an embedded rotor structure. By setting the relationship between the length of the extension part 12 and the thickness of the magnetic part 2, the existing motor torque ripple is large, the motor vibration and The problem of high noise; at the same time, it can solve the problem of large torque of motor cogging 31 and poor running stability, especially the problem of large speed fluctuation at low speed; while solving the problem of large motor torque ripple and large torque of cogging 31, it can reduce the motor Stray loss, which is beneficial to improve the efficiency of the motor.

[0066] The rotor of the motor in the embodiment of the present invention includes: a rotor core 1, a plurality of protrusions 12 and a plurality of magnetic parts 2, the rotor core 1 is evenly distributed with a plurality of protrusions 12 in the circumferential direction, and the p...

Embodiment 2

[0073] Such as Figure 1-3 , shown in 6 and 7, wherein the second embodiment shows an alternative embodiment, wherein the overall shape of the rotor (structure) is the same as that of the first embodiment Figure 1-3 The structure shown is the same except that the Image 6 The cross-sectional shape shown.

[0074] The rotor of the motor according to the second embodiment of the present invention is an embedded rotor structure. By setting the surface shape of the extension part 12, the problems of large torque ripple, motor vibration and noise of the existing motor can be solved; at the same time, the motor cogging can be solved. 31 has large torque and poor running stability, especially the problem of large speed fluctuation at low speed; while solving the problem of large motor torque ripple and cogging 31 torque, it can reduce the stray loss of the motor, which is conducive to improving the efficiency of the motor.

[0075] Such as Image 6 As shown, the rotor of the moto...

Embodiment 3

[0082] Such as Figure 8-13 As shown, the third embodiment shows an alternative embodiment, wherein the overall shape of the rotor structure is the same as that in the first embodiment Figure 1-3The structure shown is the same, the difference is that the protruding part 12 adopts Figure 8-9 The cross-sectional shape shown.

[0083] The rotor of the motor according to Embodiment 3 of the present invention is an embedded rotor structure. By setting grooves 13 on both sides of the extension part 12 and by setting the shape of the grooves 13, the existing motor torque ripple is large and the motor The problem of large vibration and noise; at the same time, it can solve the problem of large torque of motor cogging 31 and poor running stability, especially the problem of large speed fluctuation at low speed; while solving the problem of large motor torque ripple and large torque of cogging 31, it can Reducing the stray loss of the motor is conducive to improving the efficiency o...

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PUM

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Abstract

The invention relates to a rotor of a motor and the motor. The rotor is of an embedded rotor structure and comprises a rotor iron core, a plurality of extending parts and a plurality of magnetic pieces, wherein the extending parts are distributed in the circumferential direction of the rotor iron core, each magnetic piece of the magnetic pieces is arranged between every two adjacent extending parts, the magnetic pieces are alternately arranged according to N-S poles in the circumferential direction of the rotor iron core. The rotor is advantaged in that the grooves are formed in two sides of the extending parts, so problems that an existing motor is large in torque pulsation and large in motor vibration and noise are solved, meanwhile, problems of large cogging torque, poor operation stability and particularly large rotating speed fluctuation during low-speed operation of the motor can be solved, and stray loss of the motor can be reduced while problems of large torque ripple and largecogging torque of the motor are solved, and efficiency of the motor is improved.

Description

technical field [0001] The invention relates to the field of electrical appliances, in particular to a rotor of a motor and the motor. Background technique [0002] The application of motors is becoming more and more extensive. Permanent magnet motors are widely used in refrigeration compressors due to their simple structure, reliable operation, small size, light weight, and good operating performance. According to the position of the magnetic steel on the rotor, the permanent magnet motor can usually be divided into surface type and built-in type, and the surface type permanent magnet motor can be divided into two types: protruding type and embedded type according to the structure of the rotor magnetic circuit. The rotor portion of a surface embedded permanent magnet motor contains a core extension. [0003] The surface embedded permanent magnet motor has simple manufacturing process and low manufacturing cost, and can make full use of the reluctance torque generated by th...

Claims

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Application Information

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IPC IPC(8): H02K1/27
CPCH02K1/278H02K2213/03
Inventor 高东东吴广荣刘佳佳马梓净赵旭敏
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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