Patent ID: 6761545
Filing Date: 2004-07-13
Classification: F04C

Abstract:
A scroll compressor comprising:a non-orbiting scroll member having a base and a generally spiral wrap extending from its base; an orbiting scroll having a base and a generally spiral wrap extending from its base, said wraps of said orbiting and non-orbiting scrolls interfitting to define compression chambers; said orbiting scroll being driven to orbit relative to said non-orbiting scroll, to reduce said compression chambers and compress an entrapped refrigerant; a back pressure chamber defined behind said base of one of said orbiting and non-orbiting scrolls, and a tap from said compression chambers into said back pressure chamber, said tap providing a compressed refrigerant into said back pressure chamber to resist a separating force between said orbiting and non-orbiting scrolls; and a restriction member placed in said tap, refrigerant flowing over said restriction member, and past said restriction member in said tap to reach said back pressure chamber.