Patent ID: 6755632
Filing Date: 2004-06-29
Classification: F04C

Abstract:
A scroll-type compressor comprising:a housing comprising a suction chamber and a discharge chamber; a fixed scroll comprising a first spiral element, wherein the fixed scroll is fixed to the housing, and a sealing member seals the fixed scroll and the housing; an orbiting scroll comprising a second spiral element, wherein the orbiting scroll is positioned inside the suction chamber, and the first spiral element and the second spiral element interfit with each other to form a fluid pocket; a driving mechanism for moving the orbiting scroll in an orbiting motion; a rotation prevention mechanism for preventing the orbiting scroll from rotating; a first circumferential groove formed at a circumferential surface of the fixed scroll; a second circumferential groove formed at a bottom surface of the first circumferential groove, wherein the sealing member closes an open end of the second circumferential groove, such that a first communication path passes through the second circumferential groove; a second communication path formed at a lower portion of the fixed scroll, wherein the second communication path allows fluid communication between a lower portion of the discharge chamber and a lower portion of the first communication path, and a third communication path formed at an upper portion of the fixed scroll, wherein the third communication path allows fluid communication between an upper portion of the suction chamber and an upper portion of the first communication path.