Patent ID: 7381033

Claim:
A reciprocating compressor comprising: a front frame; a middle frame having an interval from the front frame; an outer stator having a winding coil and coupled between the front frame and the middle frame; a cylinder coupled to the front frame; a magnet mounting inner stator having a main body and a protruded pole portion at both ends of the main body, the magnet mounting inner stator being linear-movably inserted into the outer stator, the main body and the protruded pole portions being made of a same material; a magnet mounted at an outer circumferential surface of the magnet body and inside a recess between the protruded pole portions, the magnet having a thickness substantially equal to or less than a depth of the recess; a piston inserted into the cylinder; a connection unit for connecting the piston and the magnet mounting inner stator; a resonance spring unit for resonating the piston and the magnet mounting inner stator; and a valve assembly for opening and closing a gas flow path so that gas can be sucked into the cylinder and compressed as the piston is linearly-reciprocated.