COOLER WITH ICE HEAT STORAGE TANK AND COOLER/HEATER WITH ICE HEAT STORAGE TANK

摘要

PROBLEM TO BE SOLVED: To obtain a cooler with an ice heat storage tank in which oil return is improved while utilizing an outdoor heat exchanger effectively by practically equalizing the cooling capacity during cooling operation and ice heat storage operation. SOLUTION: A cooler with an ice heat storage tank performing cooling operation and ice heat storage operation comprises a cooling unit coupled with a compressor, an outdoor heat exchanger, a pressure reducing unit and an indoor heat exchanger sequentially through piping, and a heat storage tank for storing a heat storage material being cooled by a heat storage heat exchanger coupled in parallel with at least the indoor heat exchanger of the cooling unit wherein a control means controls the r.p.m. of the compressor such that the cooling capacity during cooling operation is substantially equal to that during ice heat storage operation.