Vibration analysis of rotary compressors.

Abstract

By theoretically analyzing the motion of moveable machine elements in rolling piston rotary compressors, the rotatory behaviour of the crankshaft and the piston was clarified and constraint forces and sliding speed at each pair were determined. Furthermore unbalanced inertia forces and compressor vibrations were evaluated. It is concluded that theoretical results are in good agreement with experimental ones. Moreover, it was revealed that one of the major factors which cause compressor vibrations is speed variation of the crankshaft caused by a pressure fluctuation in the cylinder.