抄録
This study focuses on the significant effects of thrust force and friction area upon lubrication performance at the thrust slide-bearing of scroll compressors. Thrust slide-bearing models with different gas thrust forces and different friction areas were operated under pressurized conditions using R-22. The friction coefficient at the thrust slide-bearing was measured at a series of the orbiting speed. As a result, the friction coefficient significantly decreases with increasing the gas thrust force, because of increased wedge angle between the sliding surfaces. When the gas thrust force becomes quite larger under same friction area, however, the influence of solid contact becomes dominant, thus resulting in increased friction coefficient. On the other hand, when the friction area becomes smaller under increased gas thrust force, the friction coefficient remains nearly constant, because of both the effects due to decreased viscous friction and increased solid friction.
