Patent ID: 7555915

Claim:
An air conditioner, comprising: at least one compressor which compresses a refrigerant to a high-temperature and high-pressure gas state; a condenser which condenses a discharge-side refrigerant, which is the refrigerant gas discharged out of the compressor, to a liquid state; an expansion device which expands the refrigerant liquid emerging from the condenser; an evaporator which evaporates the refrigerant liquid emerging from the expansion device to a gas state; a pressurizer which causes a refrigerant emerging from the evaporator to heat-exchange with the refrigerant emerging from the condenser, such that the refrigerant is pressurized before being sucked into the compressor, and an auxiliary condenser which causes the refrigerant discharged out of the compressor to heat-exchange with the refrigerant emerging from the pressurizer such that the refrigerant is pre-condensed before being introduced into the condenser.