Patent ID: 8533975
Filing Date: 2013-09-17
Classification: D06F,F25B

Abstract:
1. A method comprising: in a heat pump clothes dryer operating on a mechanical refrigeration cycle with a mechanical refrigeration cycle arrangement comprising an evaporator, a condenser, a compressor, and an expansion device, cooperatively interconnected and containing a refrigerant, collecting a portion of the refrigerant from the mechanical refrigeration cycle arrangement into a working fluid accumulator during a run cycle when pressure exceeds a predetermined threshold value; retaining the collected refrigerant in the working fluid accumulator when the run cycle is completed, until a subsequent run cycle; discharging the retained refrigerant to the evaporator or the condenser when the subsequent run cycle is started; and using the discharged refrigerant to elevate the mechanical refrigeration cycle by modifying a start condition of the mechanical refrigeration cycle.