Patent ID: 6283737
Filing Date: 2001-09-04
Classification: F01C,F04C

Abstract:
An anti-rotation device for a scroll compressor, such scroll compressor including a housing, a stationary scroll element mounted within such housing substantially stationary with respect to such housing, such stationary scroll element including a stationary spiral flange, an orbiting scroll element disposed within such housing, such orbiting scroll element including an orbiting spiral flange, such stationary and orbiting spiral flanges being intermeshed and nested with one another to define a spiraling compression pocket therebetween, each of such stationary and orbiting scroll elements having a substantially central axis, and an orbital drive mechanism for driving such central axis of such orbiting scroll element in an orbit at a radius or orbit about such central axis of such stationary scroll element, said anti-rotation device comprising:at least one anti-rotation bearing assembly for maintaining such orbiting scroll element substantially non-rotational with respect to such stationary scroll element during such orbit of such orbiting scroll element about such stationary scroll element, said at least one anti-rotation bearing assembly comprising:a first bearing element mounted substantially stationary with respect to such stationary scroll element;a second bearing element mounted on said orbiting scroll element; andan offset crank member;said offset crank member including a first shaft portion rotatably engaging said first bearing element mounted substantially stationary with respect to such stationary scroll and a second shaft portion rotatably engaging said second bearing element mounted on such orbiting scroll element, said first and second shaft portions of said offset crank member being separated from one another by a radially offset distance.