Patent ID: 7201568

Claim:
A scroll fluid machine comprising: a casing body; a first bearing mount member fixed to a first side of said casing body; a second bearing mount member fixed to a second side of said casing body; a low pressure scroll unit provided on the first side of said casing body, said low pressure scroll unit comprising a first orbital scroll member and a first fixed scroll member attached to said first bearing member, said first fixed scroll member having an end plate and a spiral wrap portion provided on a surface of the end plate, and said first orbital scroll member having an end plate and a spiral wrap portion provided on a surface of the end plate facing said first fixed scroll member; and a high pressure scroll unit provided on the second side of said casing body, said high pressure scroll unit comprising a second orbital scroll member and a second fixed scroll member attached to said second bearing member, said second fixed scroll member having an end plate and a spiral wrap portion provided on a surface of the end plate, and said second orbital scroll member having an end plate and a spiral wrap portion provided on a surface of the end plate facing said second fixed scroll member, wherein said wrap portions of said first fixed scroll member and said first orbital scroll member define a radial gap, and said wrap portions of said second fixed scroll member and said second orbital scroll member define a radial gap that is smaller than the radial gap defined by said wrap portions of said first fixed scroll member and said first orbital scroll member.