초록 ▼

A rotary compressor 10 of the rolling piston type is shown wherein the rolling cylindrical piston 28 is forced into rolling contact with the cylindrical interior 15 of the compressor chamber by a hydraulic piston 78 and cylinder 64 arrangement providing a resilient force on the rolling piston 28 to

A rotary compressor 10 of the rolling piston type is shown wherein the rolling cylindrical piston 28 is forced into rolling contact with the cylindrical interior 15 of the compressor chamber by a hydraulic piston 78 and cylinder 64 arrangement providing a resilient force on the rolling piston 28 to permit non-compressible matter such as liquid refrigerant to be present in the compressor chamber and also, through means 82 for varying the hydraulic pressure to the hydraulic piston and cylinder arrangement, permit varying the compressor discharge pressure while the rolling piston is continuously driven.

대표청구항 ▼

In a rotary compressor having a casing defining a generally cylindrical chamber, a rolling piston within said chamber, and crank means for driving said piston, said crank means attached to a drive shaft and comprising: a first crank member integral with said drive shaft in engagement with an arcuate

In a rotary compressor having a casing defining a generally cylindrical chamber, a rolling piston within said chamber, and crank means for driving said piston, said crank means attached to a drive shaft and comprising: a first crank member integral with said drive shaft in engagement with an arcuate portion of the internal cylindrical face of said rolling piston; a spatially separated second crank member in engagement with a diametrically opposed arcuate portion of said cylindrical face; and wherein said first crank member includes a hydraulic cylinder means in fluid flow communication with pressurized fluid through a fluid passage in said crankshaft and said second crank member defines hydraulic piston means projecting across said spatial separation and into said cylinder means; and, means for adjusting the fluid pressure on said fluid to said cylinder means to vary the force separating said crank members; wherein said pressure on said fluid in said cylinder means maintains said spatial separation under normal compressor operations to maintain said rolling piston in rolling contact with the interior of said chamber and permits retraction of said piston means within said cylinder means for said rolling piston to pass over non-compressible material within said chamber.