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Auxiliary slot stator punching sheet, stator assembly, motor and compressor

A technology of stator punching and auxiliary slot, which is applied in the fields of auxiliary slot stator punching, stator assembly, motor, and compressor, can solve the problems of large air gap, large energy efficiency loss, and little improvement effect of motor, and achieves the reduction of The effect of air gap magnetic density harmonics, vibration noise reduction, and overall vibration reduction

Pending Publication Date: 2019-12-17
ZHUHAI LANDA COMPRESSOR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the invention can reduce the torque ripple by opening auxiliary slots on the inner wall of the stator punch, this method alone has little effect on improving the motor, and has a great impact on the air gap, resulting in a large loss of energy efficiency

Method used

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  • Auxiliary slot stator punching sheet, stator assembly, motor and compressor
  • Auxiliary slot stator punching sheet, stator assembly, motor and compressor
  • Auxiliary slot stator punching sheet, stator assembly, motor and compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of auxiliary slot stator stamping of this embodiment, such as Figure 1-2 As shown, it includes a stator punching piece 1, and an auxiliary groove 2 is respectively opened on both sides of the slot shoulder of the stator punching piece 1. By opening the auxiliary slot 2 at the slot shoulder of the stator punching plate 1, the cogging torque and torque ripple of the motor are reduced, the tangential vibration of the motor is reduced, and the sine degree of the air gap magnetic density of the motor is optimized to reduce the air gap magnetic flux density. The dense harmonic wave further reduces the radial vibration of the motor, reduces the overall vibration of the motor, and reduces vibration noise.

[0030] The width of the auxiliary groove 2 is b1, the depth of the auxiliary groove 2 is d1, and the distance between one side of the auxiliary groove 2 and the bottom of the slot shoulder of the stator punch 1 is c1, and the stator punch 1 The distance between adja...

Embodiment 2

[0033] Such as Figure 3-4 As shown, the other structure of this embodiment is the same as that of Embodiment 1, the difference is that two auxiliary grooves 2 are opened on both sides of the slot shoulder of the stator punching piece 1, which are respectively the first auxiliary groove 3, The second auxiliary groove 4, the width of the first auxiliary groove 3 is b2, the depth of the first auxiliary groove 3 is d2, one side of the first auxiliary groove 3 is away from the slot shoulder of the stator punching piece 1 The distance from the bottom is c2; the width of the second auxiliary slot 4 is b3, the depth of the second auxiliary slot 4 is d3, the distance between adjacent slots of the stator punch 1 is a, and the stator punch 1 The distance between the bottom of the slot shoulder and the center of the stator punch 1 is R, where c2≥0.007*R, c2≥b2, c2≥b3, d2<0.1*a, d3<0.05*a. For the opening of two auxiliary slots 2, when the auxiliary slot 2 satisfies the above relationshi...

Embodiment 3

[0037] The other structures of this embodiment are the same as those of Embodiment 1, except that the auxiliary slot 2 is opened on the side of the slot shoulder of the stator punch 1 . The auxiliary slot 2 is set on the side of the slot shoulder of the stator punching plate 1, which can reduce the cogging torque and torque ripple of the motor, optimize the sine degree of the air gap flux density of the motor, and reduce the harmonics of the air gap flux density.

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Abstract

The invention discloses an auxiliary slot stator punching sheet, a stator assembly, a motor and a compressor and relates to the technical field of the motor. The auxiliary slot stator punching sheet comprises a stator punching sheet, and an auxiliary slot is arranged at a slot shoulder of the stator punching sheet. The auxiliary slot stator punching sheet is advantaged in that through forming theauxiliary groove in the groove shoulder of the stator punching sheet, the cogging torque and torque pulsation of the motor are reduced, tangential vibration of the motor is reduced, the air gap flux density sine degree of the motor is optimized, the air gap flux density harmonic wave is reduced, radial vibration of the motor is further reduced, and the overall vibration of the motor is reduced, sothe vibration noise is reduced.

Description

technical field [0001] The invention relates to the technical field of electric motors, in particular to an auxiliary slot stator punch, a stator assembly, a motor and a compressor. Background technique [0002] Most of the existing variable frequency air conditioner motors use fractional slots, and their performance is relatively high, but the noise and vibration are relatively deteriorated, in which the torque ripple and cogging torque increase significantly, resulting in an increase in the torque of the compressor to varying degrees. Tangential vibration caused by pulsation. [0003] In this regard, the Chinese invention of a stator punching sheet and a rotating electrical machine with the application number CN201820821757.0 discloses a stator punching sheet, including: a plurality of stacked stator punching sheets, and the stator punching sheet includes multiple stator punching sheets distributed along the circumferential direction. Two stator teeth are surrounded by tw...

Claims

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Application Information

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IPC IPC(8): H02K1/12
CPCH02K1/12H02K2201/03H02K2213/03
Inventor 张斌骥
Owner ZHUHAI LANDA COMPRESSOR
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