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Single-phase motor, fluid generation device and electrical equipment

A technology of single-phase motors and permanent magnets, which is applied in electromechanical devices, mechanical equipment, components of pumping devices for elastic fluids, etc., can solve problems such as large cogging effect, large vibration and noise, and reduce cogging effect, the effect of reducing the starting current

Inactive Publication Date: 2016-11-30
JOHNSON ELECTRIC SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, motors with non-uniform air gaps usually have greater cogging and thus greater vibration and noise

Method used

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  • Single-phase motor, fluid generation device and electrical equipment
  • Single-phase motor, fluid generation device and electrical equipment
  • Single-phase motor, fluid generation device and electrical equipment

Examples

Experimental program
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Embodiment Construction

[0040] refer to Figure 1 to Figure 3 , the single-phase motor 20 provided by an embodiment of the present invention includes a stator and a rotor. The stator includes a stator casing, a stator magnetic core 41, a stator winding 49 wound on the stator magnetic core 41, and a control circuit board 50 mounted on one end of the stator. . The stator housing includes two half-shells 31 , 32 , each half-shell including an annular barrel, a hub 35 at the outer end of the barrel, and spokes 33 connected between the barrel and the hub 35 . A bearing 37 is installed in the hub portion 35, and the stator core 41 is made of magnetically conductive material such as iron, and is installed on the inner wall of the cylinder. In this embodiment, the single-phase motor 20 is a single-phase permanent magnet brushless DC motor 20. In other embodiments, the single-phase motor 20 can also be used as a permanent magnet synchronous motor.

[0041] The rotor includes a rotating shaft 61 and a perman...

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PUM

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Abstract

The invention provides a single-phase motor, a fluid generation device and electrical equipment. The single-phase motor comprises a stator and a rotor, wherein the stator comprises a stator magnetic core and a stator winding wound on the stator magnetic core; the stator magnetic core comprises an annular yoke part and a plurality of stator teeth extending inwards from the annular yoke part; the end part of each stator tooth comprises an arc surface opposite to the rotor; each arc surface is provided with a locating groove; an accommodating cavity is enclosed by the arc surfaces of the plurality of stator teeth; the rotor is accommodated into the accommodating cavity formed by the arc surfaces; and the arc surfaces are located on a cylindrical surface employing the center of the rotor as a circle center. By implementation of the single-phase motor, the cogging effect of the motor can be reduced, so that starting current of the motor and noise of the motor are reduced.

Description

【Technical field】 [0001] The invention relates to the field of motors, and more particularly, to a single-phase motor capable of high-speed rotation and electrical equipment using the single-phase motor, such as vacuum cleaners, hand dryers, hair dryers, and the like. 【Background technique】 [0002] In the existing single-phase motor, in order to avoid the starting dead point, the air gap between the stator and the rotor usually adopts a non-uniform air gap. However, motors employing non-uniform air gaps generally have greater cogging and thus greater vibration and noise. [0003] The present invention aims to provide a single-phase motor that can solve the above problems. [Content of the invention] [0004] The purpose of the present invention is to reduce the cogging effect of single-phase motors. To this end, the present invention provides a single-phase motor, including a stator and a rotor, the stator includes a stator core and a stator winding wound on the stator c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K1/22H02K21/02H02K29/08
CPCH02K1/12H02K1/22H02K21/02H02K29/08H02K29/03H02K7/14H02K2213/03A47L9/0081H02K1/148A45D20/00A47K10/48H02K1/16H02K1/146H02K1/27A47L9/185A45D20/08F04D29/661F04D17/16F04D25/06F04D29/281F04D29/441F04D29/4226
Inventor 李越潘广业周垂有柴捷李文亮桂林平
Owner JOHNSON ELECTRIC SHENZHEN
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