Patent ID: 6514059
Filing Date: 2003-02-04
Classification: F01C

Abstract:
A scroll compressor comprising:a housing; a fixed scroll member comprising a first end plate, a first involute wrap provided on one face of said first end plate, and a wall part provided so as to surround said first involute wrap, said fixed scroll member being disposed in said housing; an orbiting scroll member comprising a second end plate and a second involute wrap provided on one face of said second end plate, and which form a plurality of compression chambers in combination with said first involute wrap of said fixed scroll member, said orbiting scroll member being disposed in said housing; a mechanism for preventing autorotation of said orbiting scroll member and for permitting rotation of said orbiting scroll member with respect to said fixed scroll member, said mechanism for preventing autorotation being provided between said orbiting scroll member and said fixed scroll member; and a floating structure mechanism that movably supports said fixed scroll member in the axial direction of said fixed scroll member, said floating structure mechanism being disposed between said housing and a side of said wall part of said fixed scroll member facing the opposite side of said orbiting scroll member, and a back-pressure block having a projection, which is disposed at a back portion of said first end plate, said back-pressure block being movable in an axial direction due to the presence of a gap between said projection of said back-pressure block and said housing, wherein said floating structure mechanism comprises a substantially flat spring member having a first end thereof which is connected to said housing and a second end thereof which is connected to said side of said wall part of said fixed scroll member such that a maximum axial amount of movement of the fixed scroll member is defined by said flat spring member and wherein said first and second ends of said flat spring member lie within substantially the same plane.