Patent ID: 6334764
Filing Date: 2002-01-01
Classification: F04C,Y10S

Abstract:
A scroll compressor comprising:a casing; a fixed scroll provided in the housing and comprising an end plate and a spiral protrusion built on one face of the end plate; and a revolving scroll provided in the casing and comprising an end plate and a spiral protrusion built on one face of the end plate, wherein the spiral protrusions of each scroll are engaged with each other so as to form a spiral compression chamber, wherein: an introduced working gas is compressed in the compression chamber and then discharged according to the revolution of the revolving scroll; a thrust member for thrust-supporting the end plate of the revolving scroll is provided at the back-face side of the end plate of the revolving scroll; a pressure pocket is formed in a face of one of the thrust member and the end plate of the revolving scroll, wherein said face faces the other of the thrust member and the end plate of the revolving scroll; a high-pressure introduction hole for introducing a high-pressure fluid into the pressure pocket is provided at one of the thrust member side and the revolving scroll side; and the pressure pocket only joins the high-pressure introduction hole so as to decrease thrust load imposed on the revolving scroll by using the introduced high-pressure fluid, wherein with a given area A of the opening of the pressure pocket, a pressure R of the high-pressure fluid in the pressure pocket, and a thrust area Ath in a solid-contact state, a decreased thrust force F thereof is defined by: F=AÃ—R+AthÃ—Â½R.