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Apparatus and method for controlling operation of compressor

A compressor and equipment technology, applied in the field of compressors, can solve the problems such as the reduction of efficiency of reciprocating compressors

Inactive Publication Date: 2008-12-10
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] Therefore, in the conventional apparatus and method of controlling the operation of the reciprocating compressor, although the mechanical resonance frequency of the compressor changes due to the voltage applied to the compressor motor changing based on the stroke estimation and the stroke reference value, the reciprocating compressor Always operate at the same operating frequency, which leads to a problem that the efficiency of the reciprocating compressor decreases

Method used

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  • Apparatus and method for controlling operation of compressor
  • Apparatus and method for controlling operation of compressor
  • Apparatus and method for controlling operation of compressor

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Embodiment Construction

[0037] According to a preferred embodiment of the present invention, reference will be made to Figures 3 to 8 An apparatus and method are described for controlling the operation of a compressor to increase the operating efficiency of the compressor despite a varying load on the compressor.

[0038] image 3 is a block diagram showing the structure of an apparatus for controlling the operation of a compressor according to a first embodiment of the present invention.

[0039] Such as image 3As shown, the apparatus for controlling the operation of the compressor includes: a current detector 40 for detecting the current applied to the motor of the compressor 60; a voltage detector 30 for detecting the voltage applied to the motor of the compressor 60; A stroke calculator 50 that calculates a stroke estimate of the compressor 60 from the detected current and voltage and motor parameters; an operating frequency reference value determination unit 70 for integrating the stroke est...

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Abstract

An apparatus for controlling a compressor, comprising: a stroke calculator for calculating a stroke estimate based on a value of current applied to a motor of the compressor and a value of voltage applied to the motor of the compressor; an operating frequency reference value determination unit using Integrating the stroke estimate and outputting the integral stroke value, detecting a mechanical resonance frequency of the compressor based on the integrated stroke estimate and the current value, and determining the detected mechanical resonance frequency as an operating frequency reference value; and a controller for The current operating frequency of the compressor is changed according to the determined operating frequency reference value.

Description

technical field [0001] The present invention relates to compressors, and more particularly, to an apparatus and method for controlling the operation of a reciprocating compressor. Background technique [0002] Generally, reciprocating compressors do not use a crankshaft to convert rotation into linear motion, so their compression efficiency is higher than that of ordinary compressors. [0003] When the reciprocating compressor is used in a refrigerator or an air conditioner, the compression ratio of the reciprocating compressor can be changed according to a change in stroke voltage input to the reciprocating compressor to control the cooling capacity. [0004] The following will refer to figure 1 A conventional reciprocating compressor is described. [0005] figure 1 is a block diagram showing the structure of an apparatus for controlling the operation of a reciprocating compressor according to the prior art. [0006] Such as figure 1 As shown, a conventional device for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/06F04B35/04
CPCF04B35/04F04B49/06F04B49/12F04B2203/0401F04B2203/0402F04B2203/0404F04B2207/046F24F1/08F25B31/023F25B49/022F25B49/025
Inventor 刘载有李徹雄成知原
Owner LG ELECTRONICS INC