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Single-phase induction motor

A single-phase induction motor, iron core back technology, applied in asynchronous induction motors, electric components, magnetic circuit shape/style/structure, etc., can solve problems such as leakage, inability to fully obtain motor work efficiency, etc., to prevent work efficiency from falling. Effect

Active Publication Date: 2013-07-03
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a possibility that the operating efficiency of the motor cannot be sufficiently obtained due to the leakage of the magnetic flux flowing from the rotating part side to the teeth at the back of the core.

Method used

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Experimental program
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Embodiment Construction

[0014] In this manual, the figure 1 The upper side of the shown motor 1 in the direction of the central axis J1 is simply referred to as "upper side", and the lower side is simply referred to as "lower side". In addition, the up-down direction does not indicate the positional relationship and direction when assembled into an actual device. In addition, the direction parallel to the central axis J1 is referred to as "axial direction", the radial direction centered on the central axis is simply referred to as "radial direction", and the circumferential direction centered on the central axis is simply referred to as "circumferential direction".

[0015] figure 1 It is a vertical cross-sectional view showing a single-phase induction motor 1 (hereinafter referred to as "motor 1") according to an exemplary embodiment of the present invention. The motor 1 is preferably used in an air conditioner, an air cleaner, a humidifier, a blower or an electric fan. The motor 1 is an inner ro...

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Abstract

The utility model provides a single-phase induction motor which is provided with coils on a plurality of teeth in a centralized winding manner. A flux flow type of the single-phase induction motor with the coils in the centralized winding manner is different from the flux flow type of a former single-phase induction motor with the coils in an annular winding manner. According to one embodiment, a minimum cross-sectional area of iron core back elements is more than 0.9 times of a minimum cross-sectional area of teeth. The minimum cross-sectional area of the iron core back elements is obtained by using a plane parallel with an axial direction to cut, and the minimum cross-sectional area of the teeth is obtained by using a plane parallel with an axial direction to cut. Thus, flux leakage caused by using a flow type different from a former flow type is prevented, or the flux leakage can be controlled in a minimum limit.

Description

technical field [0001] The present invention relates to an inner rotor type single-phase induction motor. Background technique [0002] The yoke of the stator of the induction motor disclosed in Japanese Unexamined Patent Application Publication No. 2006-288080 is a yoke connection body in which yoke members each including teeth are connected in series by a connection unit in a bendable manner. In a state where the yoke connector is unfolded linearly, the main winding is wound on each odd-numbered tooth in series via the connecting wire, and the auxiliary winding is wound in series on each even-numbered tooth through the connecting wire. Thereafter, by connecting both ends of the yoke connector, a ring-shaped yoke is formed. [0003] However, in the conventional stator core in which a plurality of core elements are linearly developed before becoming annular, the radial width of the back of the core is smaller than the circumferential width of the teeth. In a concentrated w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/08H02K1/14H02K15/095H02K3/18
CPCH02K1/148H02K3/28H02K17/08H02K2213/03H02K1/14
Inventor 横川知佳篠原敏信上村和宽
Owner NIDEC CORP