Patent ID: 7086844
Filing Date: 2006-08-08
Classification: F04C

Abstract:
1. A scroll fluid machine comprising: a multi-stage compression section in which the fluid compressed in a preceding stage compression section is further compressed in a succeeding stage compression section; a lap groove formed by spiral laps of both a stationary scroll and a revolving scroll, said laps spiraling from the vicinity of the discharge port for the compressed fluid of a final stage compression space to the fluid intake side of an initial stage compression space, with a tip seal groove formed in the tip of the stationary scroll lap to receive a seal element, and a rand formed between the discharge port at the compression end part of the preceding stage compression section and the suction port of the succeeding stage compression section; an intermediate seal element received in an intermediate groove formed on the surface of the rand which faces the end plate of the mating scroll for preventing leakage compressed fluid from the succeeding stage compression section to the discharge port opening side of the preceding stage compression section; wherein the tip seal groove is formed extending spirally from the fluid intake side of the initial stage compression section toward the compressed fluid discharge port side of the final stage compression space; the intermediate groove is formed communicating with the tip seal groove in the rand between the discharge port opening and the suction port opening; a set of seal elements including a plurality of seal elements is received in said intermediate groove and said tip seal groove, and said seal set including: