Patent ID: 8454335
Filing Date: 2013-06-04
Classification: F04C

Abstract:
1. A vane compressor comprising: a disc for rotation about an axis, said disc receiving a plurality of circumferentially spaced vanes movable radially inward and outward of slots in said disc; a cam surface surrounding said disc, and said cam surface having sections spaced by a plurality of distinct radii from said axis such that as said disc rotates, said vanes are biased into contact with said cam surface, creating a plurality of circumferentially spaced zones, and such that as said disc rotates, a fluid entrapped in said plurality of circumferentially spaced zones is initially allowed into said zones through an inlet, then compressed, then allowed to move outwardly through an outlet; and said cam surface being such that there is an outlet area of constant radius spaced from said central axis and associated with said outlet, and said outlet area of constant radius having a circumferential width such that a zone between a pair of spaced vanes immediately upstream of said outlet will not be further compressed due to said area of constant radius.