The Study of Rolling Piston, Rotary Compressor Dynamic Behavior When Stopping to Reduce Noise and Vibration Level

Shigeru MURAMATSU, Chief Engineer Masafumi FUKUSHIMA, Chief Engineer Hiroshi MATSUNAGA, Engineer, Compressor Division, (PANASONIC), Noji-cho, This study presents experimental results on the rotary crankshaft behavior, the cylinder pressure and mechanical vibrations o£ a rolling-piston rotary compressor after shut down of the motor. It is shown as a conclusion that the most importantfactor characterizing transient compressor vibrations is the instantaneous crank angle at shut down of the motor, and with the instantaneous crank angle kept within a predetermined range, the transient compressor vibrations and the associated noise generation are attenuated whenever the compressor is stopped, thus permitting a more stable shut-down process of the compressor.