Linear Compressor

a compressor and linear technology, applied in the direction of piston pumps, positive displacement liquid engines, pump parameters, etc., can solve the problems of increasing the pressure and temperature of refrigerants in the restricted space, reducing the efficiency of linear compressors, and low efficiency

Inactive Publication Date: 2008-09-04
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0027]The present invention is achieved to solve the above problems. An object of the present invention is to provide a linear compressor which can be operated in the resonance state regard

Problems solved by technology

However, the more the actual load increases, the more the pressure and temperature of the refrigerants in the restricted space increase.
However, the natural frequency fn of the piston gets smaller than the operation frequency fc of the linear motor in a low load area, and thus the piston is transferred over the TDC, to apply an excessive compression force.
The linear motor is not operated in the resonance state, thereby decreasing efficiency of the linear compressor.
Therefore, the linear motor is not operated in the resonance sta

Method used

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Embodiment Construction

[0050]A linear compressor in accordance with preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0051]As shown in FIG. 2, in the linear compressor, an inlet tube 2a and an outlet tube 2b through which refrigerants are sucked and discharged are installed at one side of a closed vessel 2, a cylinder 4 is fixedly installed inside the closed vessel 2, a piston 6 is installed inside the cylinder 4 to be linearly reciprocated to compress the refrigerants sucked into a compression space P in the cylinder 4, and various springs are installed to be elastically supported in the motion direction of the piston 6. Here, the piston 6 is connected to a linear motor 10 for generating a linear reciprocation driving force. As depicted in FIGS. 3A and 3B, even if a natural frequency fn of the piston 6 is varied by load, the linear motor 10 controls its operation frequency fc to be synchronized with the natural frequency fn of the ...

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Abstract

The present invention discloses a linear compressor in which a piston is driven by a linear motor and linearly reciprocated inside a cylinder to suck, compress and discharge refrigerants. The linear compressor synchronizes an operation frequency of the linear motor with a natural frequency of the piston, considering that an elastic force of a mechanical spring and a gas spring which elastically support the piston in the motion direction is varied by load. Even if the load is varied, the linear motor is operated in the resonance state, to maximize efficiency. The linear compressor varies a stroke of the piston according to the load, thereby actively handling and rapidly overcoming the load and reducing power consumption.

Description

TECHNICAL FIELD[0001]The present invention relates to a linear compressor which can actively handle load and efficiently perform an operation, by synchronizing an operation frequency with a natural frequency of a movable member varied by the load.BACKGROUND ART[0002]In general, a compressor that is a mechanical apparatus for increasing a pressure, by receiving power from a power unit system such as an electric motor or turbine and compressing air, refrigerants or other various operation gases has been widely used for home appliances such as a refrigerator and an air conditioner or in the whole industrial fields.[0003]The compressors are roughly divided into a reciprocating compressor having a compression space through which operation gases are sucked or discharged between a piston and a cylinder, so that the piston can be linearly reciprocated inside the cylinder to compress refrigerants, a rotary compressor having a compression space through which operation gases are sucked or disc...

Claims

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Application Information

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IPC IPC(8): F04B35/04F04B17/03
CPCF04B35/045F04B2207/045F04B2201/0806
Inventor CHOI, BONG-JUNJANG, CHANG-YONGCHO, MAN-SEOKPARK, SHIN-HYUNKIM, HYUNSHIN, JONG-MINJEON, YOUNG-HOANROH, CHUL-GI
Owner LG ELECTRONICS INC
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