Lubrication structure of linear compressor

Abstract

The invention discloses a lubricating structure for a linear compressor. The lubricating structure for the linear compressor comprises an air cylinder and a front flange; an oil supply pipeline is arranged on the front flange; a first oil pipeline which can transport lubricating oil from the oil supply pipeline to the piston surface is arranged between the front flange and a combination surface of the air cylinder. The lubricating structure for the linear compressor can reduce friction between a piston and the air cylinder wall and restrain temperature of a contact position of the piston and the air cylinder wall from rising and enables the linear compressor performance to be improved.

Description

technical field [0001] The invention relates to a linear compressor, in particular to a lubricating structure of a linear compressor. Background technique [0002] The existing linear compressor includes a shell, and lubricating oil is stored at the bottom of the inner cavity of the shell. The shell is equipped with a cylindrical outer stator, the inner cavity of the outer stator is provided with a cylindrical inner stator, the outer stator and the inner stator are coaxial, and a cylindrical mover is inserted between the outer stator and the inner stator. The inner stator has a built-in coil, and a coaxial piston is set in the inner cavity of the inner stator. One end of the piston is movably inserted on the mover, and the other end is movably inserted in the inner cavity of the cylinder, and an exhaust valve is installed in the cylinder. Piston, cylinder and exhaust valve together form a compression chamber with built-in refrigerant gas. When the coil is energized, the in...

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Problems solved by technology

Under the action of the magnetic field force, the mover reciprocates in the axial direction, and the mover drives the piston to reciprocate along the inner cavity of the cylinder, thereby compressing the refrigerant gas filled in the compression chamber. After the refrigerant gas is compressed, a large amount of heat is released. At the same time, the friction between the outer surface of the piston and the inner wall of the cylinder increases the temperature of the contact part between the piston and the cylinder, and the heat increases the temperature of the cylinder, which easily leads to a decrease in the performance of the linear compressor.

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