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Motor, compressor and refrigeration equipment

A compressor and rotor technology, applied in the field of refrigeration equipment, can solve the problems of affecting the sense of hearing, large vibration and noise, etc., and achieve the effects of stable electromagnetic wave waveform, low vibration and noise, and noise reduction

Active Publication Date: 2020-03-27
ANHUI MEIZHI PRECISION MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing rotary DC variable frequency compressors using motors, the motors generally use built-in permanent magnet motors. For the rotors of this type of motors, the harmonics of the air gap magnetic field are very rich and light in weight, which is easy to generate large Vibration noise, affecting the sense of hearing

Method used

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  • Motor, compressor and refrigeration equipment
  • Motor, compressor and refrigeration equipment
  • Motor, compressor and refrigeration equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Such as Figure 1 to Figure 3 As shown, a motor 100 includes a stator 110 and a rotor 120 , and the stator 110 surrounds the outer periphery of the rotor 120 . The stator 110 includes a stator core 111, the stator iron core 111 includes a plurality of stator teeth 112, the plurality of stator teeth 112 are distributed around the rotor 120 in the circumferential direction, a stator slot 113 is formed between two adjacent stator teeth 112, and a plurality of coils pass through The stator slots 113 are wound around the plurality of stator teeth 112 . The rotor 120 includes a rotor core 121 and a plurality of permanent magnets 122. The rotor core 121 is provided with a plurality of slots 123, and the plurality of slots 123 are circumferentially distributed around the center line of rotation of the rotor core 121. The plurality of permanent magnets 122 disposed in a plurality of slots 123 .

[0106] Further, the rotor core 121 is formed by stamping a plurality of rotors 12...

Embodiment 2

[0113] On the basis of the first embodiment above, as figure 1 As shown, the gap g between the stator 110 and the rotor 120 and the outer diameter Φr of the rotor 120 are further defined, satisfying 180≤Φr / g 2 ≤240.

[0114]In this embodiment, by setting the ratio of the outer diameter Φr of the rotor 120 to the square of the gap g between the stator 110 and the rotor 120 between 180 and 240, it is possible to ensure that the outer diameter Φr of the rotor 120 is larger. At the same time, ensure that there is a sufficient gap g between the stator 110 and the rotor 120. On the one hand, it is beneficial to increase the mass of the rotor 120, change the natural frequency of the rotor 120, and avoid the vibration noise of the shaft system caused by the relatively light weight of the rotor 120 in the related art. Larger problems are beneficial to reduce the operating noise of the motor 100 and the compressor 200, improve user experience, and significantly improve the hearing of a...

Embodiment 3

[0126] On the basis of any of the above embodiments, the gap g between the stator 110 and the rotor 120 is further defined to satisfy 0.5mm≤g≤0.55mm. On the one hand, it is beneficial for the rotor 120 to rotate smoothly in the stator 110 without bumping; To solve the problem of high vibration and noise, reduce the running noise of the motor 100 and the compressor 200 . Moreover, when the inner diameter Φsi of the stator 110 and the outer diameter Φso of the stator 110 satisfy 0.558≤Φsi / Φso≤0.576, and / or the gap g between the stator 110 and the rotor 120 and the outer diameter Φr of the rotor 120 satisfy 180≤Φr In the case of / g2≤240, and / or the moment of inertia J of the rotor 120, the gap g between the stator 110 and the rotor 120, the mass m of the rotor 120, and the outer diameter Φr of the rotor 120, satisfy 230≤J / g 2 ≤340, J=0.5m×Φr 2 In the case of , the weight of the rotor 120 can be better increased while ensuring the performance of the motor 100 , thereby reducing ...

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Abstract

The invention provides a motor, a compressor and refrigeration equipment. The motor comprises a stator, the stator is provided with a plurality of stator teeth arranged in the circumferential direction of the stator, and a stator slot gap is defined by every two adjacent stator teeth; each coil group comprises a plurality of coils wound on the stator teeth, and each coil correspondingly bypasses one corresponding stator tooth; the rotor is arranged in the stator, the rotor comprises a rotor iron core and a plurality of permanent magnets, a plurality of slots are formed in the rotor iron core,the plurality of slots are circumferentially distributed around the rotating center line of the rotor iron core, and the plurality of permanent magnets are arranged in the plurality of slots; the residual magnetism Br of each permanent magnet at 20 DEG C meets the condition that Br is greater than or equal to 1.2 T; the inner diameter phi si of the stator and the outer diameter phi so of the stator meet the condition that phi si / phi so is larger than or equal to 0.558 and smaller than or equal to 0.576. Motor operation noise reduction.

Description

technical field [0001] The invention belongs to the technical field of refrigeration equipment, and in particular relates to a motor, a compressor and a refrigeration equipment. Background technique [0002] In the existing rotary DC variable frequency compressors using motors, the motors generally use built-in permanent magnet motors. For the rotors of this type of motors, the harmonics of the air gap magnetic field are very rich and light in weight, which is easy to generate large Vibration noise affects hearing. Contents of the invention [0003] The present invention aims to solve one of the technical problems existing in the prior art or related art. [0004] To this end, a first aspect of the invention proposes an electric machine. [0005] A second aspect of the invention proposes a compressor. [0006] A third aspect of the present invention proposes a refrigeration device. [0007] In view of this, according to the first aspect of the present invention, a moto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K1/14H02K1/27
CPCH02K1/12H02K1/146H02K1/2706H02K2213/03H02K2201/03
Inventor 徐飞邱小华江波
Owner ANHUI MEIZHI PRECISION MFG
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