Patent ID: 7572116
Filing Date: 2009-08-11
Classification: F01C,F04C

Abstract:
1. A compression system comprising: a multicylinder rotary compressor in which a sealed container stores a driving element and first and second rotary compression elements driven by a rotation shaft of the driving element, the first and second rotary compression elements comprising: first and second cylinders; first and second rollers which are fitted into eccentric portions formed in the rotation shaft and which eccentrically rotate in the respective cylinders; and first and second vanes which abut on the first and second rollers to partition the inside of each cylinder into low and high-pressure chamber sides, only the first vane being urged toward the first roller by a spring member, wherein the multicylinder rotary compressor is started in a state in which suction-side pressures of both the rotary compression elements are applied as a back pressure of the second vane, when the compressor is started, discharge-side pressures of both the rotary compression elements are applied as the back pressure of the second vane, after the starting, and thereafter the back pressure of the second vane is set to be an intermediate pressure between the suction-side and discharge-side pressures of both the rotary compression elements.