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Single-phase induction motor

A technology of induction motor and electric motor, which is applied in the field of electric motor and can solve the problems of increasing current loss and decreasing electric motor efficiency.

Inactive Publication Date: 2007-12-19
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, since the primary copper loss is generated from the stator coil and the secondary copper loss is generated from the conductor bar of the rotor, the current loss increases and the efficiency of the motor decreases.

Method used

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Embodiment Construction

[0035] Reference will now be made in detail to some preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0036] Fig. 3 is a longitudinal sectional view showing the inside of a single-phase induction motor according to the present invention. Fig. 4 is a sectional view along line B-B' in Fig. 3 . FIG. 5 is a partially cutaway perspective view showing a magnetic unit of a single-phase induction motor according to the present invention.

[0037] 3 to 5, a single-phase induction motor according to the present invention includes: a motor body 110 as a casing; a stator 120 disposed along the inner circumferential surface of the body 110; a rotor 130 rotatably disposed at the center of the stator 120; And the rotating shaft 131 around which the rotor 130 rotates. In this case, the rotor 130 is designed to always be at a constant distance from the stator 120 .

[0038] A rotating shaft bearing 131 a is installed between the rotati...

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Abstract

A single phase induction motor comprises: a stator installed at an inner circumferential surface of a motor housing, comprising a stator core on which a plurality of coils are wound; a rotor rotatably installed at a center of the stator and provided with a shaft at a center thereof; and a permanent magnetic unit in the air gap between stator and rotor and able to rotate around the shaft.

Description

technical field [0001] The present invention relates to a motor, and in particular, to a single-phase induction motor that reduces consumed power and generated noise by installing a magnetic unit in a body of the induction motor. Background technique [0002] In general, an induction motor is an electric motor using alternating current without a rectifier, and one of a rotor and a stator thereof is connected to a power source and the other is operated by induction. [0003] 1 is a longitudinal sectional view showing the inside of a conventional single-phase induction motor, and FIG. 2 is a sectional view along line A-A in FIG. 1 . [0004] Referring to Fig. 1 and Fig. 2, a traditional single-phase induction motor includes: a motor main body 1 as a casing; a stator 2 arranged along the inner circumferential surface of the main body 1; an AC squirrel cage rotatably arranged at the center of the stator 2 the rotor 3; and the rotation shaft 4 around which the rotor 3 rotates. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K17/04H02K21/14H02K16/02H02K5/24H02K17/30H02K17/16
CPCH02K17/04H02K16/02H02K21/14
Inventor 韩承道申铉定安埈澔
Owner LG ELECTRONICS INC
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