Pulse width modulation with discharge to suction bypass

摘要: A pulse width modulation control is provided for a suction valve located on line. When the flow rate through refrigerant system needs to be reduced, rapidly cycled from an open position closed position. bypass line connecting compressor discharge with and positioned side of are also provided. closes valve, it prevent backflow into line, and, at same time, opens valve. Opening reduces pressure, leading reduction in power consumption subsequent operating efficiency gain.