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Outer rotor motor and washing machine having with same

An external rotor motor and rotor technology, applied in the field of washing machines, can solve the problems affecting the vibration and noise of washing machines, large fluctuations in motor speed, high vibration and noise, etc., to reduce vibration and noise, low vibration and noise, and reduce cogging moment effect

Active Publication Date: 2019-01-25
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 motor in the related art, such as a direct drive motor used in a washing machine, has a stator with 27 magnetic poles and a rotor with 36 magnetic poles, that is, the ratio of the rotor magnetic poles to the stator magnetic poles is 4:3, and the cogging torque of this type of motor is relatively low. Large, the speed of the motor fluctuates greatly at low speed, resulting in high vibration and noise, which in turn affects the vibration and noise of the washing machine

Method used

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  • Outer rotor motor and washing machine having with same
  • Outer rotor motor and washing machine having with same
  • Outer rotor motor and washing machine having with same

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Embodiment Construction

[0049] 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.

[0050] In describing the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "inner", "outer", "axial", "radial", "circumferential ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are 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 have a specific orientation, ...

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Abstract

The invention discloses an outer rotor motor and a washing machine having the same. The outer rotor motor comprises a stator, wherein the stator comprises a core body, wherein the core body comprisesan annular portion and 27 magnetic poles, and the 27 magnetic poles are arranged on the outer peripheral surface of the annular portion at a circumferential interval around the annular portion; A three-phase winding comprising a plurality of coils wound around the 27 magnetic poles; An insulator for insulating the three-phase winding from the 27 magnetic poles; A rotor, the rotor comprising: a magnetically conductive hub frame; A magnetic permeable re is provided on that magnetic permeable hub frame and together with at least a part of the magnetic permeable hub frame form a yoke portion. 32 magnet provided at that yoke portion. The outer rotor motor implemented according to the invention can reduce the tooth groove torque, reduce the speed fluctuation at low speed, and reduce vibration and noise while ensuring the opposite electromotive force, torque constant and load capacity.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to an outer rotor motor and a washing machine with the outer rotor motor. Background technique [0002] The motor in the related art, such as a direct-drive motor used in a washing machine, has a stator with 27 magnetic poles and a rotor with 36 magnetic poles, that is, the ratio of the rotor magnetic poles to the stator magnetic poles is 4:3, and the cogging torque of this type of motor is relatively low. Large, the rotation speed of the motor fluctuates greatly at low speed, resulting in high vibration and noise, which in turn affects the vibration and noise of the washing machine. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes an external rotor motor, which can reduce cogging torque, reduce speed fluctuation at low speed, reduce vibration and noise...

Claims

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Application Information

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IPC IPC(8): H02K21/22H02K1/14
CPCH02K1/148H02K21/22H02K2213/03
Inventor 张小文冯益民靖威叶向荣
Owner WUXI LITTLE SWAN ELECTRIC CO LTD
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