Patent ID: 6210137
Filing Date: 2001-04-03
Classification: F04C

Abstract:
A scroll fluid machine comprising:a casing;a fixed scroll member provided in said casing, said fixed scroll member having a spiral wrap portion standing on an end plate;a driving shaft rotatable provided in said casing;an orbiting scroll member orbitably provided at a distal end of said driving shaft through an orbiting bearing in said casing, said orbiting scroll member having a spiral wrap portion standing on an end plate so as to overlap the wrap portion of said fixed scroll member to define a plurality of compression chambers;a thrust bearing provided in said casing so as to come in sliding contact with a rear side of said orbiting scroll member to bear a thrust load acting on said orbiting scroll member;a lubrication pump provided between the rear side of said orbiting scroll member and said thrust bearing, said lubrication pump having a pump chamber formed between a sliding contact surface on the rear side of said orbiting scroll member and a sliding contact surface of said thrust bearing, said lubrication pump operating in response to a motion of said orbiting scroll member;a lubricant suction passage provided in said thrust bearing to lead a lubricant contained in said casing into the pump chamber of said lubrication pump; anda discharge passage provided in said orbiting scroll member to deliver the lubricant sucked into the pump chamber of said lubrication pump to lubricating points.