SYSTEM OF HEAT PUMP FOR COOLING AND HEATING OF MIDDLE PRESSURE BINARY CYCLE FOR COLD AREAS

摘要

The present invention relates to a medium-pressure two-cycle air-conditioning heat pump system for cold cooling, and more particularly, to a device for overcoming stability and efficiency at the time of heating and cooling, comprising a low temperature refrigerant means for inducing a low temperature refrigerant cycle ( 100); An outdoor side evaporator 110 provided at the low temperature refrigerant means 100 to evaporate the liquid refrigerant using low temperature external air, and having a blower fan 111 mounted on the outside thereof; High temperature refrigerant means 200 which interacts with the low temperature refrigerant means 100 and induces a high temperature refrigerant circulation cycle; It is provided on the high temperature refrigerant means 200, is converted to a condenser when heating to absorb the heat of condensation of the high temperature and high pressure gas, and then to supply hot water by heating the hot water of the hot water tank (not shown), when switching to the evaporator And plate heat exchanger 210 to supply cold water; A gas cage condenser (300) connected to the low temperature refrigerant means (100) and the high temperature refrigerant means (200) to allow heat exchange between the low temperature side and the high temperature side; A flash that generates a medium pressure by evaporation and subcooling by heat exchange from the sensible heat of the low temperature low pressure refrigerant formed through the low temperature refrigerant means 100 and the plate heat exchanger 210 outlet pipe generated through the high temperature refrigerant means 200. A tank 400; An outdoor side heat exchanger (220) provided on the high temperature refrigerant means (200), and switched to an evaporator when heating to reheat external low temperature air, and to be converted to a condenser when cooling to condense a refrigerant having a high temperature and high pressure; It is composed of a low temperature side effect compressor (120) that evaporates from the outdoor side evaporator (110) and the fresh tank (400) and simultaneously compresses and compresses refrigerant vapors of the low pressure side and the medium pressure side having different evaporation pressures. In the cold district, the refrigerant liquid evaporation of the outdoor evaporator is not smooth and the amount of refrigerant circulated to the high pressure side is reduced, so that the heat dissipation amount of the condenser is lowered and the heating efficiency is reduced. By applying to the medium pressure two-way cycle to reduce the incidence rate of the outdoor evaporator to increase the performance coefficient while improving the efficiency to increase the cooling and heating efficiency and to reduce the cost.;Heat Pump, Multi-effect Compressor, Condenser, Evaporator, Flash Tank, Heat Exchanger, Air Flow Sensor, Four-way Valve, Gascade Condenser