| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerant filling method and a refrigerant filling device capable of additionally filling the refrigerant at an appropriate amount without discharging the refrigerant. SOLUTION: The device is provided with a refrigerant storage container 6 storing the refrigerant, a supply path K supplying the refrigerant from the refrigerant storage container 6 to a refrigeration cycle R, and a volume variable part 5 provided by branching from the middle of the supply path K. When the outside air temperature Ta is lower than the critical temperature Tc of the refrigerant, the refrigerant in the volume variable part 5 is sucked into the refrigeration cycle R after the refrigerant is additionally filled to the refrigerant pressure Pn1 at the time when the refrigerant is filled to the appropriate amount by adding the volume V0 in the volume variable part 5 to the refrigeration cycle R. The refrigerant can be additionally filled at the appropriate amount without discharging the refrigerant. COPYRIGHT: (C)2004,JPO&NCIPI
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