Patent ID: 7104084

Claim:
A heat pump equipped with an extraction heat exchanger comprising: a compressor for sucking low-temperature-and-low-pressure liquid refrigerant, and compressing and discharging the low-temperature-and-low-pressure liquid refrigerant into high-temperature-and-high-pressure liquid refrigerant; a condenser in which air passing therethrough absorbs heat from the high-temperature-and-high-pressure liquid refrigerant discharged from the compressor to liquefy the high-temperature-and-high-pressure liquid refrigerant; an evaporator in which the refrigerant absorbs heat from indoor air and is evaporated to cool the indoor air; a main electronic expansion valve connected between the condenser and the evaporator to decompress the high-pressure liquid refrigerant liquefied in the condenser such that the decompressed refrigerant is easily evaporated in the evaporator and flows at a predetermined flow rate; and the extraction heat exchanger for branching a part of the high-temperature-and-high-pressure liquid refrigerant discharged from the outlet of the condenser, performing heat exchange between high-temperature-and-high-pressure super-cooled liquid refrigerant and high-temperature-and-high-pressure refrigerant passing through a heat exchanging refrigerant tube between the condenser and the main electronic expansion valve and bypassing to an accumulator.