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Electric motors, compressors and refrigeration equipment

A compressor and magnetic isolation slot technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of frequent maintenance, affecting the normal use of the motor, demagnetization of permanent magnets, etc.

Active Publication Date: 2022-07-12
ANHUI MEIZHI PRECISION MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the running state of the motor, the permanent magnet will produce partial demagnetization, which requires frequent maintenance, which seriously affects the normal use of the motor

Method used

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  • Electric motors, compressors and refrigeration equipment
  • Electric motors, compressors and refrigeration equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] combine figure 1 and figure 2As shown, the embodiment of the first aspect of the present invention provides a motor, including: a rotor iron core 100, an installation slot 200 and a magnetic isolation slot 300, the installation slot 200 is arranged on the rotor iron core 100 along the circumferential direction of the rotor iron core 100; The magnetic isolation slot 300 is arranged on the rotor core 100 , and the magnetic isolation slot 300 is located between the installation slot 200 and the outer edge of the rotor core 100 .

[0037] The installation slot 200 can provide an installation position for the permanent magnet. By arranging the magnetic isolation slot 300 between the installation slot 200 and the outer edge of the rotor core 100, the magnetic isolation slot 300 can reduce the magnetization of the reverse magnetic field at the part where the rotor is easy to demagnetize, thereby The second permanent magnet is protected from being easily magnetized, the anti-...

Embodiment 2

[0045] combine figure 1 and figure 2 As shown, on the basis of the first embodiment, the installation groove 200 includes: a first groove body 210 and a second groove body 220, the first end of the second groove body 220 is connected to the first end of the first groove body 210, and the first groove body 220 is connected to the first groove body 210. The second ends of the two slot bodies 220 and the second end of the first slot body 210 extend toward the outer edge of the rotor core 100 with different extending directions.

[0046] The installation groove 200 includes a first groove body 210 and a second groove body 220 . Wherein, the first slot body 210 and the second slot body 220 may communicate with each other or be relatively independent, and both the first slot body 210 and the second slot body 220 are used for installing permanent magnets. In addition, the first slot body 210 and the second slot body 220 both extend toward the outer edge of the rotor core 100 , tha...

Embodiment 3

[0055] combine figure 1 and figure 2 As shown, on the basis of the above embodiment, the motor further includes a stator 400, the stator 400 is provided with a stator iron core 410, the inner diameter of the stator iron core 410 is D1, and the outer diameter of the stator iron core 410 is D2, which satisfies 0.57≤D1 / D2≤0.6.

[0056] In this embodiment, the dimensional relationship between the inner diameter of the stator iron core 410 and the outer diameter of the stator iron core 410 is specifically defined, and the ratio of the inner diameter of the stator iron core 410 to the outer diameter of the stator iron core 410 is between 0.57 and 0.6, By limiting this range, it is possible to ensure that the motor has high energy efficiency, and the processing cost of the motor can be reduced.

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PUM

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Abstract

The invention provides a motor, a compressor and a refrigeration device, wherein the motor comprises: a rotor iron core, an installation slot and a magnetic isolation slot, the installation slot is arranged on the rotor iron core along the circumferential direction of the rotor iron core; the magnetic isolation slot is arranged on the rotor Iron core, the magnetic isolation slot is located between the installation slot and the outer edge of the rotor core, and the minimum distance L between the magnetic isolation slot and the installation slot satisfies 0.6mm≤L≤2mm. The invention defines the minimum distance between the magnetic isolation slot and the installation slot between 0.6mm and 2mm, which can effectively improve the magnetic field distribution, ensure the anti-demagnetization ability of the permanent magnet, and effectively improve the performance stability of the motor.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular, relates to a motor, a compressor and a refrigeration device. Background technique [0002] For compressors used in refrigeration equipment such as air conditioners, variable frequency motors have become the mainstream technology, and fixed-speed models have gradually withdrawn from the market, and all frequency conversion has arrived. At present, the motor of the inverter compressor is developing towards the design structure of multi-slot and multi-pole. However, in the running state of the motor, the permanent magnet will be partially demagnetized, which requires frequent maintenance, which seriously affects the normal use of the motor. SUMMARY OF THE INVENTION [0003] The present invention aims to solve one of the technical problems existing in the prior art or related technologies. [0004] In view of this, a first aspect of the present invention proposes a motor, compri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/276H02K1/14
CPCH02K1/2766H02K1/146H02K2213/03
Inventor 杨森邱小华张德金
Owner ANHUI MEIZHI PRECISION MFG
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