| 摘要 |
PURPOSE: A piston-initial position variable device of a reciprocating compressor is provided to improve compression efficiency by reducing a dead volume generated by stroke of a piston inside a cylinder in changing cooling power of the compressor. CONSTITUTION: A piston-initial position variable device of a reciprocating compressor is composed of a plurality of frames(21,22,23) elastically fixed in a casing(10); a reciprocating motor(30) supported by the frames to reciprocate rectilinearly a mover(33); a piston(42) connected to the mover of the reciprocating motor rectilinearly reciprocating in the cylinder fixed to the frame; resonant springs(52,53) settled between a spring supporting unit(51) disposed to the rear end of the piston and the frame facing the spring supporting unit to elastically hold the piston and induce the resonant motion of the piston; and a length-variable member(60) arranged on one fixed surface of the resonant spring to change an initial position(SP) of the piston.
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