LINEAR MOTOR-DRIVEN COMPRESSOR

摘要

Disclosed is a linear motor-driven compressor in which by effectively cooling a permanent magnet, the compression efficiency of a refrigerant can be maintained even over a period of prolonged use. The linear motor-driven compressor includes a housing, an end plate, a valve unit, a piston, a coil, and a permanent magnet. The housing has a cylinder bore extending in the axial direction. The cylinder bore forms a compression chamber between the piston and the valve unit. The piston includes a piston rod and a piston head. The permanent magnet is provided in the piston head and reciprocates the piston due to an electromagnetic force caused by the coil. The housing has a cooling chamber in which an intake refrigerant is introduced around the piston rod. The cooling chamber is connected to the compression chamber through a refrigerant intake mechanism.