Single-phase permanent magnet motor

A single-phase permanent magnet motor and permanent magnet pole technology, applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuits, electric components, etc., can solve the problems of vibration and noise, poor starting reliability, and small positioning and starting angles And other problems, to achieve the effect of reducing the dead point of starting, enhancing the reliability of starting, and smooth starting and rotation

Inactive Publication Date: 2017-03-08
JOHNSON ELECTRIC SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single-phase permanent magnet motor with this structure, due to the existence of the notch, will cause the motor to generate a large positionin

Method used

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  • Single-phase permanent magnet motor
  • Single-phase permanent magnet motor
  • Single-phase permanent magnet motor

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Experimental program
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Example

[0033] First embodiment

[0034] See Figure 1 to Figure 5 The single-phase permanent magnet motor 10 according to a preferred embodiment of the present invention includes a stator 20 and a rotor 50 that rotates relative to the stator. The stator 20 includes a cylindrical housing 21 with an open end, an end cover 23 installed at the open end of the housing 21, a stator core 30 installed in the housing 21, an insulated bobbin 40 installed to the stator core 30, and a stator magnetic The winding 39 on the core 30 and supported by the insulated wire frame 40. Among them, the stator core 30 includes an outer ring portion 31, a number of tooth bodies 33 extending inward from the outer ring portion 31, pole shoes 35 extending from the radial end of each tooth body 33 to the two circumferential sides, and windings 39 It is wound on the corresponding tooth body 33, and the winding 39 and the stator core 30 are isolated by an insulated wire frame 40.

[0035] The rotor 50 is housed in a ...

Example

[0044] Second embodiment

[0045] Please refer to Figure 7 The difference from the previous embodiment is that in order to improve the winding efficiency of the winding 39, the stator core 30 is formed by splicing several core assemblies 300 along the circumference of the stator. Each core assembly 300 includes an arc-shaped yoke 300b. , The tooth body 33 extends from the arc-shaped yoke 300b, and the pole shoes 35 extend from the radial end of the tooth body 33 to both sides in the circumferential direction. In this embodiment, each magnetic core assembly 300 has a tooth body 33 and a corresponding pole shoe 35. Understandably, each magnetic core assembly may also have more than one tooth body 33 and corresponding pole shoes 35. After the winding of each magnetic core assembly is completed, the several magnetic core assemblies 300 are spliced ​​together to obtain a stator core 30 with stator windings.

[0046] The joints of the arc-shaped yoke parts of adjacent magnetic core as...

Example

[0048] The third embodiment

[0049] Please refer to Figure 8 The difference from the second embodiment is that in this embodiment, the joints of the arc-shaped yokes of adjacent magnetic core assemblies are flat. At this time, the joints of the arc-shaped yokes can be welded together by welding. .

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Abstract

The invention discloses a single-phase permanent magnet motor. The single-phase permanent magnet motor comprises a stator and a rotor which can rotate relative to the stator, wherein the stator comprises a stator magnetic core and a winding which is wound around the stator magnetic core; the stator magnetic core comprises an outer ring part, multiple tooth bodies which extend from the outer ring part to the inner side, and pole shoes which extend from the tail end of each tooth body to two sides circumferentially, wherein the rotor is accommodated in a space formed by the pole shoes in a surrounding manner; the rotor comprise multiple permanent magnetic poles arranged in the circumferential direction of the rotor; and the distances from the outer side surface of each permanent magnet pole to the rotor axis are gradually decreased from the circumferential center to the circumferential two sides, so that non-uniform air gaps, which are symmetrical around the middle line of the permanent magnetic poles, are formed between the outer side surfaces of the permanent magnetic poles and the inner circumferential surfaces of the pole shoes. By adoption of the single-phase permanent magnet motor, the starting reliability is improved, and starting dead points are reduced.

Description

technical field [0001] The invention relates to a single-phase permanent magnet motor, in particular to a single-phase permanent magnet motor with slots. Background technique [0002] The motor stator core of the single-phase permanent magnet motor in the prior art adopts an integral structure, that is, the outer ring portion and the tooth portion of the stator core are formed into an integrated structure at the same time, and slots are provided between the pole shoes of adjacent tooth portions to facilitate for winding. For the single-phase permanent magnet motor with this structure, the existence of the notch will cause the motor to generate a large positioning torque, thereby generating vibration and noise. Moreover, restricted by the notch, the positioning starting angle is small, and the starting reliability is poor. [0003] In view of this, the present invention aims to provide a novel single-phase permanent magnet motor capable of improving starting reliability. ...

Claims

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Application Information

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IPC IPC(8): H02K1/12H02K1/22
CPCH02K1/12H02K1/14H02K1/146H02K1/22H02K1/278H02K21/16H02K2201/03
Inventor 李越周垂有王勇李勇
Owner JOHNSON ELECTRIC SHENZHEN
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