Patent ID: 7878777
Filing Date: 2011-02-01
Classification: F04C,F05C

Abstract:
1. A scroll compressor comprising: a fixed scroll fixed on a housing; a movable scroll arranged in opposed relation to the fixed scroll and adapted to revolve with respect to the fixed scroll on a rotary shaft thereby to compress a fluid; a thrust bearing arranged on the back surface of the movable scroll for receiving the axial force; and a lubricating oil supply means for supplying the lubricating oil to the thrust bearing; wherein the thrust bearing includes a donut-shaped first member formed with a plurality of grooves and a plurality of pressure receiving portions defined by the plurality of the grooves and a donut-shaped second member in sliding contact with the first member, wherein the plurality of the pressure receiving portions are arranged only on radially outside an envelope plotted by an inner peripheral edge of the second member by the relative motion of the first member and the second member, and wherein the plurality of the pressure receiving portions are formed on a surface that faces the second member.