COOLING AIRCONDITIONER AND ITS CONTROL METHOD WITH OVER-COOLING DEVICE AND OVER-HEATING DEVICE

摘要

The present invention relates to a cooling air conditioner having a supercooling device and a superheater, and a control method thereof. The present invention relates to a compressor, a subcooling heat exchanger for first cooling a refrigerant discharged from the compressor, and a discharge from the subcooling heat exchanger. An outdoor heat exchanger for cooling the refrigerant to be secondary, a refrigerant expansion means for thermally expanding the refrigerant discharged from the outdoor heat exchanger to a low pressure state, and an indoor heat exchanger for exchanging the refrigerant discharged from the cold blind expansion means with indoor air; Three-way valve for guiding the movement of the refrigerant discharged from the indoor heat exchanger, and if the refrigerant discharged from the indoor heat exchanger includes liquid refrigerant, the superheat degree of the refrigerant discharged from the indoor heat exchanger by applying heat to the refrigerant The water tank for overheating to increase, and the discharge from one of the overheating water tank and the indoor heat exchanger It consists of an accumulator for separating the liquid refrigerant contained in the refrigerant from the refrigerant, and a subcooling water tank that collects condensate falling from the surface of the indoor heat exchanger and absorbs the heat of the subcooling heat exchanger by the condensate. By collecting the condensed water condensed in the heat exchanger to further cool the refrigerant flowing into the indoor heat exchanger, and if the refrigerant flowing into the compressor has a low superheat including liquid refrigerant, the refrigerant is heated to overheat to increase the thermal efficiency of the cooling system. A cooling air conditioner having an improved supercooling device and an overheating device, and a control method thereof.