Patent ID: 7223082

Claim:
A rotary compressor having first and second rotary compressing elements driven by a rotary shaft of a driving element in a hermetically sealed vessel to discharge a refrigerant gas, which has been compressed by the first rotary compressing element, into the hermetically sealed vessel, and compress the discharged refrigerant gas of an intermediate pressure by the second rotary compressing element, the rotary compressor comprising: a first cylinder for constituting a first rotary compressing element and a second cylinder for constituting a second rotary compressing element; a roller that is provided in each of the cylinders and fitted onto an eccentric member of the rotary shaft to eccentrically rotate; an intermediate partitioner provided between the cylinders and the rollers to partition the rotary compressing elements; supporting members that close open surfaces of the cylinders and have bearings for the rotary shaft; and an oil bore formed in the rotary shaft, wherein a surface of the intermediate partitioner that is adjacent to the second cylinder has a groove for communication between the oil bore and a low-pressure chamber in the second cylinder, and the intermediate partitioner has a through bore for communication between an interior of a hermetically sealed vessel and the inside of the rollers.