Patent ID: 6220840
Filing Date: 2001-04-24
Classification: F04C

Abstract:
An apparatus for displacing a fluid, the apparatus comprising:a first scroll having a first vane;a second scroll having a second vane;the first vane interleaved with the second vane to form at least one fluid pocket within the interleaved vanes;means for entry of the fluid into the at least one fluid pocket;means for exit of the fluid from the at least one fluid pocket; andmeans coupled to at least one of the scrolls for causing a relative orbital motion between the first and second scrolls, wherein the relative orbital motion causes the at least one fluid pocket to be displaced, andwherein each of the first and second vanes comprises inner and outer surfaces defining a wall, each wall having a thickness varying from a common point proximate an inner portion of the vane to an outer portion of the vanes, the rate of the varying of the thickness with respect to the angular position of the inner surface being a continuous function of the angular position of the inner surface.