Oscillation-type compressor

摘要

A tightly closed casing (1) has an inside space (1a) for storing coolant gas. A block (6) is accommodated in this casing. A motor (3) includes a stator (3a) and a mover (3b). A piston (5) is connected to the mover (3b) of the motor. A movable element (12) includes the mover (3b) of the motor and the piston (5). A stationary element (13) includes the stator (3a) of the motor and the block (6). An elastic element (8) has a portion (8b) fixed to the movable element (12) and another portion (8c) fixed to the stationary element (13). A position changing mechanism (416) associated with the movable element (12) for changing an axial position of said movable element (12).