... piston compressor 2.cold room compressor is mainly composed of a machine body, crankshaft, connecting rod, piston, valve, seal, pump, energy ... cold room compressor : Compressor and motor share a shaft ,there are a variety of work hole on the shell ,it is convenient to ... cold room compressor : compressor and motor share a shaft, it is contained in a sealed enclosure,with low noise and good sealing ...