Patent ID: 6881042
Filing Date: 2005-04-19
Classification: F04B

Abstract:
1. A reciprocating compressor comprising: a container communicating with a gas suction pipe for sucking a gas; a reciprocating motor installed in the container and having an outer stator and an inner stator, each stator having an inner and an outer diameter and being provided with at least one step portion at both sides thereof, and an armature for linearly moving therebetween; a compression unit having a cylinder and a piston inserted in the cylinder to receive a linear and reciprocal driving force of the reciprocating motor and compress a gas while making a linear and reciprocal movement; a suction unit sucking a gas sucked into the container through the gas suction pipe due to a pressure difference in the compression unit, into the compression unit; a discharge unit discharging the gas compressed in the compression unit to outside the container; a resonance spring unit elastically supporting the piston and the armature; and a frame unit supporting the compression unit and the reciprocating motor and having a front frame which supports the reciprocating motor at the front side and a rear frame which supports the reciprocating motor at the rear side, one of the front and the rear frame having at least two step portions for supporting both outer stator and inner stator of the reciprocating motor, the front frame and the rear frame having at least one step portion for receiving one of the steps of the outer or inner stator, the circumferential face of which forms a concentric circle with the inner diameter of the cylinder.