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Motor assembly for rotary compressor and rotary compressor

A technology for rotary compressors and motor components, applied in the field of compressors, can solve problems such as increased rotor magnetic field imbalance force, rotor and stator impact, compressor starting difficulty, etc., to reduce processing loss, improve starting ability, and good The effect of work efficiency

Active Publication Date: 2018-12-04
ANHUI MEIZHI PRECISION MFG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the assembly process of the compressor, it is inevitable to make the gap between the stator and the rotor uneven, resulting in an increase in the unbalanced force of the magnetic field on the rotor
Because the rotor is connected to the pump body in the compressor and fixed on one side to form a cantilever beam structure, when the unbalanced force of the stator increases, the swing amplitude of the upper end of the rotor will increase sharply. In severe cases, the rotor and the stator will collide, causing the compressor to It is difficult to start and produces abnormal noise of rotor and stator impact

Method used

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  • Motor assembly for rotary compressor and rotary compressor
  • Motor assembly for rotary compressor and rotary compressor

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Experimental program
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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a motor assembly for a rotary compressor according to an embodiment of the present invention includes a stator and a rotor 1 . The rotor 1 can be arranged in the stator, and the rotor 1 is divided into an upper section 11 and a lower section 12 along its axial direction, and the upper section 11 is located above the lower section 12, wherein the outer contour of the cross section of the lower section 12 is formed as a circle with a radius R 0 , the upper section 11 is a cutting section, the outer contour of the cross section of the upper section 11 is formed as a circle and the radius of the outer contour of the cross section of the upper section 11 is smaller than the radius of the outer contour of the cross section of the lower section 12.

[0036] In the direction from bottom to top, the cross-sectional area of ​​the upper section 11 tends to decrease, that is, the radius of the outer contour of the cross-section of the upper section 11 ten...

Embodiment 2

[0039] Such as figure 2 As shown, the structure of this embodiment is substantially the same as the first embodiment, except that the upper section 11 is configured as a tapered shaft structure, and the radius of the outer contour of the cross section of the upper section 11 gradually decreases from bottom to top. The minimum radius of the outer contour of the cross section of the upper section 11 is R min , the maximum cutting thickness of upper section 11 is R 0 -R min , and satisfy: 0.1mm≤(R 0 -R min )≤0.15mm.

[0040] According to the motor assembly for the rotary compressor in the embodiment of the present invention, because the upper section 11 of the rotary compressor is reasonably arranged, it can avoid the collision between the upper part of the rotor 1 and the stator during the starting process of the rotary compressor, and ensure that the rotary compressor While improving the starting ability, the efficiency loss of the motor assembly is reduced, and the worki...

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Abstract

The invention discloses a motor assembly for a rotary compressor and a rotary compressor, wherein the motor assembly for the rotary compressor comprises: a stator; The upper segment is located above the lower segment, the upper segment is divided into the first segment from bottom to top, ..., the Nth segment, where N≥2, the maximum cross-sectional area of ​​the first segment is less than the minimum cross-sectional area of ​​the lower segment, and the first segment is The maximum cross-sectional area of ​​segment i is smaller than the minimum cross-sectional area of ​​segment i-1, where i is an integer in (1, N]. The motor assembly for a rotary compressor according to the present invention can improve the rotary At the same time of compressor starting ability, it can reduce the loss of motor assembly efficiency, so that the working efficiency of the rotary compressor can be better played, and the performance parameters of the rotary compressor can be improved. At the same time, it can also reduce the cutting amount of the rotor and reduce the reduce processing losses and improve production efficiency.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a motor assembly for a rotary compressor and the rotary compressor. Background technique [0002] In the related art, the cross-sections of the rotor and the stator of the rotary compressor have the same clearance. The starting ability of a fixed-speed compressor is one of the important factors to measure the reliability of the compressor. Generally, when the compressor is started, the smaller the coaxiality between the rotor and the stator, that is, the more uniform the gap formed between the stator and the rotor of the compressor, and the compression The better the starting ability of the machine. However, during the assembly process of the compressor, it is inevitable to make the gap between the stator and the rotor uneven, resulting in an increase in the unbalanced force of the magnetic field on the rotor. Because the rotor is connected to the pump body in the compresso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/22F04C23/02
CPCF04C23/02H02K1/22
Inventor 巴强吴多更吴楠
Owner ANHUI MEIZHI PRECISION MFG