초록 ▼

The disclosed rolling piston type compressor comprises a needle bearing sandwiched between two bearing washers and serving as a thrust bearing for a rotary shaft and a resilient sealing ring of polytetrafluoroethylene press fitted into a space defined by the outer periphery of the needle bearing and

The disclosed rolling piston type compressor comprises a needle bearing sandwiched between two bearing washers and serving as a thrust bearing for a rotary shaft and a resilient sealing ring of polytetrafluoroethylene press fitted into a space defined by the outer periphery of the needle bearing and the two bearing washers. Alternatively the sealing ring may be formed of cast iron and seal the space with an oil film disposed in a clearance between the ring and one of the bearing washers.

대표청구항 ▼

A rolling piston type compressor comprising a cylinder having first and second ends, first and second housings respectively disposed at said first and second ends of said cylinder to form a compressor compartment within said cylinder, a rotary shaft rotatably extending through said cylinder on the l

A rolling piston type compressor comprising a cylinder having first and second ends, first and second housings respectively disposed at said first and second ends of said cylinder to form a compressor compartment within said cylinder, a rotary shaft rotatably extending through said cylinder on the longitudinal axis thereof, first and second bearings disposed in said first and second housings, respectively, to rotatably support said rotary shaft, an eccentric member disposed on said rotary shaft between said first and second bearings, a hollow rolling piston disposed on the outer periphery of said eccentric member rotatably engagable with said first and second housings, said rolling piston being drivable by said rotary shaft to compress a gas within said compression compartment, a balance weight disposed on said first end of said rotary shaft outside of said first housing, means, communicating with said first bearing, for providing lubricant to said first bearing by differential pressure, a pair of bearing washers and a needle bearing for said rotary shaft sandwiched between said pair of bearing washers, disposed between said balance weight and said first housing to form a space defined by a selected one of the outer and inner periphery of said needle bearing and said pair of bearing washers, and means, disposed in said space, for sealing said space against gas flow through said space.