Patent ID: 6783335
Filing Date: 2004-08-31
Classification: F04B

Abstract:
A linear compressor having a cylinder, a cylinder head assembled with the cylinder and having at least one valve, a piston received in said cylinder, and a drive unit reciprocating said piston, the linear compressor comprising:an anti-collision device preventing the piston from moving past an upper dead center position of the piston to prevent the piston from colliding with the cylinder head and the valve; a resonant spring mounted with the piston and reciprocating with the piston such that when the piston reaches the upper dead center position, the resonant spring comes into contact with the anti-collision device; a spacer extending from an end of said cylinder, the resonant spring being perpendicularly mounted to said spacer; and a movable member extending from an end of said piston, being assembled with a central portion of the resonant spring and being reciprocated by said drive unit, and said anti-collision device being mounted to the spacer while being spaced apart from the resonant spring by a predetermined gap, when the piston is not reciprocating wherein said anti-collision device comprises: an elastic member mounted to said spacer and provided with a central opening having a predetermined size; and a shock absorbing member set in said central opening of the elastic member, said shock absorbing member having a central hole and being fitted over the movable member at said central hole such that the movable member reciprocates through the central hole.