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Single-phase motor and rotor thereof

A single-phase motor and rotor technology, which is applied to synchronous motors, electric components, electrical components, etc. for single-phase current, can solve the problems of unstable starting of the motor, and achieve stable starting, small starting current, and good starting reliability. Effect

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

AI Technical Summary

Problems solved by technology

At this time, the torque on the rotor is zero, causing the motor to start unstable.

Method used

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  • Single-phase motor and rotor thereof
  • Single-phase motor and rotor thereof
  • Single-phase motor and rotor thereof

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. When a component is said to be "set on" another component, it may be set directly on the other ...

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Abstract

The invention relates to a single-phase motor. The motor comprises a stator and a rotor, the stator comprises a stator magnetic core and a winding, the stator magnetic core comprises an external yoke portion and stator teeth, each stator tooth comprises a winding portion and a pole shoe connected to one end of the winding portion, and the winding is wound around the corresponding winding portion. The rotor includes a rotor core and permanent magnets. The permanent magnets are embedded in the rotor core and evenly distributed in the circumferential direction of the rotor core. Each permanent magnet is of a stripe-shaped asymmetric structure, and cross-sectional areas at both ends of each permanent magnet are not equal. Thus, the initial position of the rotor is able to avoid a dead point position, and start-up of the motor is stable. The present invention also provides the rotor of the single-phase motor.

Description

technical field [0001] The invention relates to the field of motors, in particular to a rotor of a single-phase motor and a motor using the rotor. Background technique [0002] In recent years, the single-phase brushless DC motor has developed rapidly. Its structure is generally to wind the stator winding on the stator core. After the stator winding is energized, a changing magnetic field is generated to drive the rotor embedded with permanent magnets. Since the stator core needs to be wound with a stator winding, slots are usually provided on the stator core for automatic winding. [0003] However, the existence of the notch increases the reluctance between the position of the stator core where the notch is provided and the permanent magnet of the rotor, and the stator core has a starting dead point. That is, when the motor is in a non-energized state or there is no significant rotation blockage, the magnetic pole axis of the rotor will automatically deflect to the directi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/14H02K29/00
CPCH02K1/146H02K1/276H02K29/00H02K2201/03H02K29/03H02K21/16H02K1/24H02K1/265H02K21/14H02K2213/03H02K1/2706H02K19/04
Inventor 李越张涛柴捷周垂友
Owner JOHNSON ELECTRIC SHENZHEN
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