Patent ID: 7008199
Filing Date: 2006-03-07
Classification: F01C,F04C,F25B,Y10T

Abstract:
1. A rotary compressor comprising: an electrical-power element; a sealed vessel; and first and second rotary compression elements driven by the electrical-power element in the sealed vessel and disposed in a configuration such that gas compressed at the first rotary compression element is discharged into the sealed vessel and this discharged medium pressure gas is compressed by the second rotary compression element, the rotary compressor further comprising; a cylinder constituting the second rotary compression element, a swing piston having a roller portion engaged to an eccentric portion formed on a rotary shaft of the electrical-power element to eccentrically move in the cylinder, a vane portion formed on the swing piston to project from the roller portion in a radial direction to divide an inside of the cylinder into a low-pressure chamber side and a high-pressure chamber side, and a holding portion on the cylinder to which the vane portion of the swing piston is mounted and which permits slideable and swinging movement of the vane.