Patent ID: 6203292
Filing Date: 2001-03-20
Classification: F04B,H02K

Abstract:
An oscillation-type compressor comprising:a tightly closed casing having an inside space for storing coolant gas;a block accommodated in said tightly closed casing;a motor including a stator and a mover;a piston connected to said mover of said motor;a movable element including said mover of said motor and said piston;a stationary element including said stator of said motor and said block;an elastic element having one portion fixed to said movable element and another portion fixed to said stationary element;a cylinder shiftable with respect said block;a cylinder head fixed to said cylinder;back-pressure chambers formed in said coolant gas space and airtightly partitioned by an integral unit including at least one of said cylinder and said cylinder head; andat least one of said back-pressure chambers being held at a low pressure level and another one of said back-pressure chambers being held at a high pressure level.