Patent ID: 7117688

Claim:
A refrigeration device, comprising: an outdoor unit having a compressor, an outdoor heat exchanger used as a condenser during cooling operations and as an evaporator during heating operations, and a heating pressure reduction mechanism; an indoor unit having a cooling pressure reduction mechanism and an indoor heat exchanger used as an evaporator during cooling operations and as a condenser during heating operations; a liquid side refrigerant line and a gas side refrigerant line that connect the outdoor unit and the indoor unit and form a refrigerant cycle circuit; and a refrigerant charging device detachably connected to the liquid side refrigerant line and which charges refrigerant into the refrigerant cycle circuit, the refrigerant charging device including a refrigerant charging circuit having a refrigerant tank that stores refrigerant for charging, a first conduit that flows refrigerant from the refrigerant cycle circuit to the refrigerant tank in a cooling operational state, a second conduit that draws refrigerant from the refrigerant tank to the refrigerant cycle circuit in the cooling operational state, and a refrigerant switching mechanism that switches between conduction and non-conduction of the refrigerant charging circuit.