Co-rotational scroll apparatus with optimized coupling

Details Co-rotational scroll apparatus with optimized coupling Co-rotational scroll apparatus with optimized coupling

F - Mech Eng,Light,Heat,Weapons

04

C

F04C 18/02 (2006.01) F01C 1/02 (2006.01) F01C 17/06 (2006.01) F25B 1/00 (2006.01)

Patent

CA 2052784

In a co-rotational scroll apparatus having two interleaving scroll wraps secured to end plates rotating about parallel, non-concentric axes to produce a relative orbital motion, a coupling for causing concurrent rotation and for enhancing the nutational stability of the scroll element. In the preferred embodiment, the nutation reducing means is comprised of an Oldham-type coupling engaging extension members on one of the scroll end plates and drive keys on the other respective end plate. The angular disposition thereof is optimized to cause the Oldham coupling to generate during rotation a moderating moment load in opposition to the tipping moment load of at least one of the scroll elements and thereby enhance the nutational stability of the scroll elements. The moderating moment load of the coupling imposed on the scroll elements may be altered by varying the angular and radial disposition of the center of gravity of the coupling.

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