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Motor and household appliance

A fan-shaped part and rotor core technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of high vibration noise and low power density, reduce vibration noise, improve power density and efficiency, and reduce mechanical vibration Effect

Active Publication Date: 2021-08-24
GUANGDONG WELLING ELECTRIC MACHINE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application mainly provides a motor and household appliances to solve the problems of low power density and high vibration and noise

Method used

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  • Motor and household appliance
  • Motor and household appliance
  • Motor and household appliance

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0038] If there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. Significance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the re...

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Abstract

The invention discloses a motor and a household appliance. The motor comprises a rotor iron core which comprises a shaft ring part and a plurality of fan-shaped parts which are arranged around the shaft ring part at intervals, a containing groove is formed between every two adjacent fan-shaped parts, and a magnet is arranged in each containing groove; a stator iron core, sleeved on the periphery of the rotor iron core; a plastic coating part, comprising an end face covering part, and the end face covering part covering the whole end face or partial end face of the rotor iron core so as to at least cover the magnet on the end face of the rotor iron core; wherein a non-uniform air gap is formed between the rotor iron core and the stator iron core, and the non-uniform air gap periodically changes along the periphery of the rotor iron core. The air gap between the rotor core and the stator core is set to be the non-uniform air gap, and the non-uniform air gap is limited to periodically change along the periphery of the rotor core, so that the motor is optimized, the harmonic component of the tangential electromagnetic force wave of the motor is relatively low, and the vibration noise of the motor can be reduced. Meanwhile, the power density and efficiency of the motor are improved.

Description

[0001] This application is a divisional application of the case with the filing date of "2019.09.26", the application number of "201910919358.7", and the application title of "Motor and Household Appliances". technical field [0002] The present application relates to the technical field of motors, in particular to a motor and a household appliance. Background technique [0003] Because of its simple structure and reliable operation, brushless DC motors are increasingly used in various household appliances. [0004] However, the existing motors have low power density and high vibration noise, which no longer meet the needs of current household appliances. It is necessary to seek a motor with high power density and low vibration noise. Through testing the vibration and noise of a large number of motors, it is found that the noise problem of the motor is mainly torque ripple, in addition to mechanical vibration, while improving the vibration and noise of the motor, the efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K1/22H02K1/27H02K1/28H02K29/03H02K1/14
CPCH02K1/12H02K1/22H02K29/03H02K2201/03H02K2213/03H02K1/148H02K1/276H02K1/28
Inventor 李文瑞于明湖李虎
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG