Patent ID: 7722341

Claim:
A compressor, comprising: a frame coupled to an inside of a casing; a fixed scroll coupled to the frame, wherein the fixed scroll includes a fixed plate and a fixed wrap extending from a lower surface of the fixed plate; and an orbiting scroll including an orbiting plate and an orbiting wrap extending from an upper surface of the orbiting plate, wherein the orbiting scroll is configured to be engaged with the fixed wrap so as to form a space therebetween, wherein the orbiting scroll is configured to perform an orbiting motion with respect to the fixed scroll such that a volume of the space formed between the fixed an orbiting wraps is progressively decreased so as to form a compression space, and wherein a thickness of at least one of the fixed scroll or the orbiting scroll varies based on a radial position along its respective plate, wherein the compression space comprises a first compression chamber and a second compression chamber, wherein a volume of the first compression chamber is greater than a volume of the second compression chamber, and wherein a thickness of a portion of the at least one of the fixed or orbiting scroll which is outside the first and second compression chambers is less than its thickness in the first compression chamber, and is greater than its thickness in the second compression chamber.