F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
F04C 29/00 (2006.01) F01C 17/06 (2006.01) F04C 18/02 (2006.01)
Patent
CA 2326307
An anti-rotation device for a scroll compressor. The scroll compressor includes intermeshed and nested stationary and orbiting scroll elements which define at least one spiraling compression pocket therebetween and an orbital drive mechanism for driving the central axis of the orbiting scroll element about the central axis of the stationary scroll element. The anti-rotation device maintains the orbiting scroll element substantially non-rotational with respect to the stationary scroll element during its orbit thereabout and includes at least one anti-rotation bearing which includes a first bearing element mounted stationary with respect to the stationary scroll element, a second bearing element mounted on the orbiting scroll element and an offset crank member. The offset crank member has a first shaft portion rotatably engaging the first bearing element and a second shaft portion which is radially offset from the first shaft portion by a distance equal to the radius of orbit, parallel thereto and rotatably engages the second bearing element. Preferably, the first and second bearing elements are rotational bearing components, the second shaft portion of the offset crank member non-rotatably engages, via a sonically tapered fitting, a bushing member which itself rotationally engages the second rotational bearing component and at least three such anti-rotation bearings are disposed at equal angular displacements (e. g., 120°) about the central axis of the scroll compressor.
Jones Charlie E.
Kazakis Michael V.
Macrae & Co.
Westinghouse Air Brake Technologies Corporation
LandOfFree
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