OLDHAM COUPLING WITH ENHANCED KEY SURFACE IN A SCROLL COMPRESSOR

摘要

An Oldham coupling structure for a scroll compressor decreases Oldham coupling pressure loading without increasing compressor diameter or significantly increasing orbiting scroll or Oldham coupling inertia. The Oldham coupling key height and area are increased by recessing the key face into the ring portion of the Oldham coupling, increasing the key height and adding pads to the involute side of the orbiting scroll base plate to extend the key slot, potentially resulting in reduced compressor diameter and/or reduced orbiting scroll and Oldham coupling inertia.

主权项

1. An Oldham coupling structure for a scroll compressor, the Oldham coupling structure comprising:
a compressor housing; a first stage of compression disposed within the compressor housing, the first stage comprising:
a first, stationary, scroll member comprising a base and a generally spiral wrap extending from the base of the first, stationary, scroll member; anda second, orbiting, scroll member comprising a substantially circular base and a generally spiral wrap extending from the base of the second, orbiting scroll member; anda first Oldham coupling disposed on the second scroll member base, wherein the first Oldham coupling comprises a ring member comprising one or more coupling keys, and further wherein each first Oldham coupling key comprises a loaded side face that is recessed into the ring member of the first Oldham coupling to form a recessed portion of the first Oldham coupling ring member.