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Stator of external rotor motor, external rotor motor and washing machine

An external rotor motor and stator technology, applied in the field of washing machines, can solve the problems of high motor noise and vibration, and achieve the effects of low noise and vibration, high power density, and low noise and vibration

Pending Publication Date: 2019-12-24
WUXI LITTLE SWAN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The motors in the related art, such as the direct-drive permanent magnet motor used in the washing machine, use it to drive the rotating tub or the pulsator of the washing machine to rotate, but due to the defects in the design of the motor itself and the working characteristics of the washing machine, the noise and noise of the motor itself Vibration is usually higher

Method used

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  • Stator of external rotor motor, external rotor motor and washing machine
  • Stator of external rotor motor, external rotor motor and washing machine
  • Stator of external rotor motor, external rotor motor and washing machine

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Embodiment Construction

[0056] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0057] In describing the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "inner", "outer", "axial", " The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must Having a particular orientat...

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Abstract

The invention discloses the stator of an external rotor motor, the external rotor motor and a washing machine. The stator comprises a stator iron core. The stator iron core comprises a stator yoke part which is ring-shaped, and a number of stator tooth parts which are arranged on the stator yoke part at intervals along the circumferential direction of the stator yoke part. The stator tooth parts extend outward in the radial direction of the stator yoke part. Each stator tooth part comprises a tooth crest shoe. The outer side of each tooth crest shoe comprises a middle arc segment, a first sidearc segment and a second side arc segment. The curvature radii of each first side arc segment and each second arc segment are smaller than the curvature radius of the middle arc segment, and the ratio of the width of the middle arc segment to the width of any of the first side arc segment and the second side arc segment is 2.4 to 2.5. The stator further comprises a three-phase winding which comprises multiple coils wound around the stator tooth parts, and an insulation member which is used to make the three-phase winding insulated from the stator iron core. According to the embodiment of theinvention, the stator of the outer rotor motor has the advantages of low cogging torque and load torque fluctuation, low noise and vibration, and high power density.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a stator of an outer rotor motor, an outer rotor motor having the stator of the outer rotor motor, and a washing machine having the outer rotor motor. Background technique [0002] The motors in the related art, such as the direct drive permanent magnet motor used in the washing machine, use it to drive the rotating bucket or the pulsator of the washing machine to rotate, but due to the defects in the design of the motor itself and the working characteristics of the washing machine, the noise and noise of the motor itself Vibration is usually higher. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a stator for an external rotor motor, which has low cogging torque and load torque ripple, low noise and vibration, and high power density....

Claims

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Application Information

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IPC IPC(8): H02K1/14H02K1/16H02K1/27H02K3/34
CPCH02K1/148H02K1/165H02K1/2786H02K3/345H02K2201/15H02K2213/03
Inventor 王永生张小文李东明
Owner WUXI LITTLE SWAN ELECTRIC CO LTD