linear compressor

Abstract

The present invention provides a linear compressor. The linear compressor of the embodiment of the present invention includes: a cylinder forming a compression space for the refrigerant, and a cylinder nozzle for the refrigerant to flow in; and a piston disposed on the cylinder. The inside of the cylinder is suspended by the refrigerant supplied through the nozzle of the cylinder; the piston includes: a piston body reciprocating in the front and rear directions inside the cylinder; and a first piston groove provided in The outer peripheral surface of the piston body guides a part of the refrigerant supplied from the cylinder nozzle to be discharged to the outside of the cylinder.

Description

Technical field [0001] The present invention relates to linear compressors. Background technique [0002] The cooling system refers to a system in which refrigerant circulates and generates cold air, which repeatedly performs the compression, condensation, expansion, and evaporation processes of the refrigerant. To this end, the cooling system includes: a compressor, a condenser, an expansion device, and an evaporator. In addition, the cooling system may be installed in a refrigerator or an air conditioner as a home appliance. [0003] Generally speaking, a compressor is a mechanical device that receives power transmitted from a power generating device such as an electric motor or a turbine, and compresses air or refrigerant or other working gases to increase its pressure. Compressors are widely used in the household appliances or the entire industrial field. [0004] Such compressors can be roughly divided into a reciprocating compressor (Reciprocating compressor), a rotary compr...

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Problems solved by technology

[0023] In addition, although it is necessary to make the refrigerant flow in uniformly within the range of the outer peripheral surface of the piston body, since the gas bearing is mostly supplied to the front part of the piston where the pressure of the refrigerant is high, relatively the rear part of the piston occurs. The phenomenon of low suspension force

As a result, an imbalance of levitation force occurs between the front and rear parts of the piston, reducing the performance of the gas bearing

[0024] In addition, the refrigerant gas used in the gas bearing is discharged into the casing and cannot be discarded, and it flows to the compression space side of the cylinder and is compressed again, thereby reducing the compression performance of the refrigerant.

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