Patent ID: 6120269
Filing Date: 2000-09-19
Classification: F01C,F04C

Abstract:
A scroll type compressor comprising a fixed scroll member in which a scroll portion is erected on a circular bottom plate and which is accommodated in a housing, and a movable scroll member supported opposing said fixed scroll member so as to form a compression chamber between itself and said fixed scroll member, said scroll type compressor further including an Oldham coupling constituted of said movable scroll member having key grooves crossing perpendicularly to key grooves installed at said housing, freely slidably fit into an Oldham ring disabling a rotation of said movable scroll member and enabling a revolution thereof on an elliptic orbit determined by respective scroll walls of said movable scroll member and said fixed scroll member, wherein a direction of a reciprocation of said Oldham ring substantially coincides with a minor axis of an elliptic circulating orbit of said movable scroll member in said key grooves installed at said housing.