| 摘要 |
The present invention relates to a heat pump system, and more specifically, to hot water generation of an air heat source type heat pump system, and a defrosting and cooling structure of an outdoor heat exchanger, for simplifying the structure thereof, increasing the efficiency of use of a costless heat source, enhancing the coefficient of performance to a satisfactory level, and generating hot water at all times. The present invention comprises: a basic freeze cycle (10) for connecting the major components with a refrigerant conduit; a hot water heating circuit (20) mounted between a compressor (11) and a 4-way valve (12) of the refrigerant conduit; a defrosting means (30) for forming a condenser (32) between an expansion valve for cooling (14) and an expansion valve for heating (15) of the refrigerant conduit, surrounding the condenser (32) with a heat storage tank (33) having inserted therein a heat storage medium, mounting an auxiliary heat exchanger (34) on the outdoor heat exchanger (16), so that the heat storage tank (33) and the auxiliary heat exchanger (34) are connected so as to form a heat storage medium closed circulation circuit; a defrosting and cooling means (40) having a heat exchanger (41) formed on a heat medium conduit (43) by connecting both ends of the heat medium conduit (43) on the back of a heat storage medium circulation pump (36) of a heat storage medium supply pipe (35a), and having a costless heat source storage tank (42) formed on the heat exchanger (41) and also forming a heat medium closed circulation circuit by coupling the costless heat source storage tank (42) with a heat storage medium closed circulation circuit formed on the defrosting means (30), thereby circulating the heat medium to the auxiliary heat exchanger (34); and performance enhancing means (50) mounted on the exit side of the heat exchanger (41) of the heat medium conduit (43) and between the outdoor heat exchanger (16) and 4-way valve (12) of the refrigerant conduit (17). |
