Patent ID: 7540720
Filing Date: 2009-06-02
Classification: F04B

Abstract:
1. A heat-insulating mechanism in a compressor which introduces refrigerant gas from a suction pressure region to a compression chamber and discharges the refrigerant gas from the compression chamber to a discharge pressure region, comprising: a circular passage, which is a portion of the suction pressure region, having a circular cross-section, the circular passage being in communication with an external refrigerant circuit; a communication passage, which is a portion of the suction pressure region, intersecting the circular passage for connection therewith, the communication passage being communicable with the compression chamber; a cylindrical member rotatably fitted into the circular passage; and a passage heat-insulating member made of an insulating material, the passage heat-insulating member covering at least a portion of a passage wall surface which forms the communication passage, and rotation of the cylindrical member being prevented by engaging the passage heat-insulating member with the cylindrical member, wherein the cylindrical member has a communication hole which is in communication with the communication passage, and wherein the passage heat-insulating member is fitted into the communication hole of the cylindrical member.