Single-phase induction motor and sealing-type compressor with same

An induction motor, single-phase technology, applied in the field of single-phase induction motors and hermetic compressors, can solve the problem of weakening the 3rd harmonic torque, the 5th harmonic torque and the 7th harmonic torque, without considering the motor starting. Torque, starting torque slow climb speed and other problems, to reduce the deterioration of starting torque, avoid magnetic flux density saturation, high-efficiency starting performance

Active Publication Date: 2014-02-19
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of sinusoidal windings in the stator winding simply weakens the 3rd harmonic torque, 5th harmonic torque and 7th harmonic torque, and does not consider the use of harmonic torque, mainly the 3rd harmonic torque to increase the speed from 0 to The starting torque of the motor under N / 3, so the starting torque of the motor climbs slowly at the speed of 0 to N / 3, which brings the problem that the compressor needs a long time to start again after stopping or even cannot start.

Method used

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  • Single-phase induction motor and sealing-type compressor with same
  • Single-phase induction motor and sealing-type compressor with same
  • Single-phase induction motor and sealing-type compressor with same

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0033] Before describing the single-phase induction motor and hermetic compressor according to the embodiments of the present invention, a brief introduction to the single-phase induction motor in the related art will be given below.

[0034] At present, single-phase induction motors with 2-pole winding are widely used in fixed-speed compressors, which include a stator core composed of a plurality of laminated steel plates, and are inserted and arranged in a concentric winding manner in the stator slot of the stator core. The mai...

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Abstract

The invention discloses a single-phase induction motor which comprises a stator iron core, a main winding and an auxiliary winding. Stator grooves are formed in the stator iron core. The number of the stator grooves is integer multiples of 4. The stator grooves comprise large stator grooves and small stator grooves. The radial depth of the large stator grooves in the stator iron core is larger than that of the small stator grooves in the stator iron core. The main winding is provided with two single-phase poles and wound by wires in a concentric mode, and the main winding is inserted into the large stator grooves and / or the small stator grooves. The auxiliary winding is provided with two single-phase poles and wound by wires in a concentric mode, and the auxiliary winding is inserted into the small stator grooves and slantly arranged by 90 degrees relative to the main winding in the circumferential direction of the stator iron core. Each pole of the main winding and each pole of the auxiliary winding are respectively composed of a plurality of coils wound by the wires in the concentric mode, wherein the turns of each coil of each pole of the main winding is configured into the mode that 3-time harmonic content of the main winding is increased and 5-7-time harmonic content is decreased. Therefore, according to the configuration, the 3-time harmonic content is increased, starting torque is improved by means of 3-time harmonic torque, and the high efficiency and the high-starting performance are achieved. The invention further discloses a sealing-type compressor.

Description

technical field [0001] The present invention relates to a single-phase induction motor and a hermetic compressor having the single-phase induction motor. Specifically, the present invention relates to a single-phase 2-pole wound single-phase induction motor and a hermetic compressor having the same. Background technique [0002] In the related art, a 2-pole wound single-phase induction motor is widely used in fixed-speed compressors. The 2-pole wound single-phase induction motor has a stator core composed of a plurality of laminated steel plates. The main and auxiliary windings and cast aluminum or copper cage rotors are inserted into the stator slots in a concentric winding manner, thus possessing the ability of self-starting. [0003] During the starting process of the above-mentioned single-phase induction motor whose speed changes from 0 to a stable running speed, the mechanical torque output by the motor is a synthetic torque jointly generated by the fundamental magnet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/12H02K3/28
Inventor 张尊睦王中泉于明湖陈正胜
Owner GUANGDONG MEIZHI COMPRESSOR
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