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Capacity modulation compressor and air conditioning system having the same

A capacity adjustment and compressor technology, applied in compressors, irreversible cycle compressors, machines/engines, etc., can solve the problems of slow synchronous speed of single-phase induction motors, reduce copper loss, improve power efficiency, increase Effect of starting torque

Inactive Publication Date: 2010-01-20
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leaves another limitation on improving the efficiency of the motor at high temperature
[0020] At the same time, it is well known that a single-phase induction motor should essentially always run slower than a preset synchronous speed in order to be able to generate induced torque

Method used

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  • Capacity modulation compressor and air conditioning system having the same
  • Capacity modulation compressor and air conditioning system having the same
  • Capacity modulation compressor and air conditioning system having the same

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0078] In the following, reference will be made to the attached Figure 3 to Figure 15 A preferred embodiment of the electric machine according to the invention is set out in detail. For the sake of brevity and convenience of explanation, it will be described that an inner rotor type motor is provided which rotates inside a stator, but the motor of the present invention is not limited to the inner rotor type motor.

[0079]The motor according to the present invention is constructed by the same method as conventional induction motors in the prior art, in which the rotor 120 starts running by induction torque. That is, if image 3 As shown, the motor adopts the structure of an induction motor, including a rotor 120 having slots 121 and conductive bars 122 , stator coils 112 and 114 (hereinafter referred to as “coils”) for rotation of the motor, and a capacitor 115 . Therefore, any description below will not detail the same structure between the two motors.

[0080] Meanwhile,...

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PUM

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Abstract

Provided is a capacity modulation compressor, comprising: a shell forming a sealed interior space; a compression mechanism, which is positioned inside the shell and modulates a capacity for compressing a working fluid; and an electromotive driving unit, which is positioned inside the shell, includes a stator and a rotor, and drives the compression mechanism; and a shaft for transferring a torque of the electromotive unit to the compression mechanism, the rotor including a rotor core, conductive bars, flux barriers, and permanent magnets, starting running by an induction torque produced due to the presence of the conductive bars, and operating at a synchronous speed by a reluctance torque produced due to the presence of the flux barriers and a magnetic torque produced to the permanent magnets, and the compressing capacity for the compression mechanism to compress the working fluid being set lower than a maximum compression capacity.

Description

technical field [0001] The present invention generally relates to capacity modulated compressors driven by linear start permanent magnet reluctance motors (LSPRM). More specifically, the present invention relates to a capacity modulating compressor having a mechanism that overcomes the disadvantages of LSPRMs subjected to large loads during initial start-up. Background technique [0002] In general, a single-phase induction motor includes a stator wound with primary and secondary coils physically spaced 90° from each other, and power applied directly to the primary coil and indirectly (ie, through capacitors and switches) to the secondary coil. This is because, even if voltage is applied to the main coil, a single phase induction motor will not start. Therefore, starting means such as secondary coils are required to create the rotor system on the stator, thereby starting or starting the rotor. [0003] There are many types of starting devices such as split-phase starting, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/356F04C28/18F04C28/00F25B1/04H02K21/12H02K21/02
CPCF04C28/06F04C18/3564F04C2270/56H02K21/46F04C23/008F01C21/0863F04C29/0085F04C29/00
Inventor 南赫李康旭河承亨李根炯
Owner LG ELECTRONICS INC