Abstract: A scroll-type fluid displacement device has two interfitting spiral-shaped scroll members which have predetermined geometric configurations. The novel design provides a flow diverter mechanism which directs intake fluid flow to break incompressible liquid accumulated into fine droplets which can be evenly engulfed by two suction pockets formed by the scrolls. This invention also provides a multiple groove tip seal mechanism for radially sealing off the compression pockets. This invention further provides a semi-radial compliant mechanism which maintains the radial compliant function of the orbiting scroll and at the same time transfers the load caused by the centrifugal force of the orbiting scroll from the scroll elements to the crank shaft.

Abstract: A scroll-type fluid displacement apparatus has two interfitting spiral-shaped scroll members which have predetermined geometric configurations. The novel design provides an oil-gas separation and circulation system in which the oil, through a reservoir in the close proximity of the thrust bearing and metering orifices network, is properly and promptly directed to the scroll compression chamber, Oldham ring and bearings to provide lubrication and cooling. This invention also provides a notch mechanism at the tip of the orbiting scroll member during operation to avoid the orbiting scroll wrap from completely blocking the oil injection ports of small size on the fixed scroll base. This invention further relates to a gas intake system which directs gas from the oil-gas separator/sump to close the intake control valve and maintain low power consumption during unload mode.