Patent ID: 6132192
Filing Date: 2000-10-17
Classification: F04C

Abstract:
A scroll compressor comprising:a frame having a couple of key slots on the upper end thereof;a fixed scroll having a spiral lap and positioned above said frame and spaced apart at a distance from said frame;an orbiting scroll opposed to said fixed scroll and having a spiral lap engaged with said spiral lap of said fixed scroll, and a couple of key slots on the lower face thereof, said lower face slidably abutting against the upper face of said frame; andan annular Oldham coupling having a configuration to surround said abutting faces, and having on the upper end thereof keys which are slidably engaged with said key slots of said orbiting scroll, and on the lower end thereof keys which are slidably engaged with said key slots of said a frame,wherein at least one of said fixed and orbiting scrolls is made of an alloy having a composition of 8-10% by weight of silicon, 2-5% by weight of copper, 0.5-0.8% by weight of magnesium, and remaining percentage by weight of aluminum.