| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily charge a refrigerant of liquid state under normal temperature to a refrigerant circuit without an inert gas and air mixed therein, while preventing a risk of liquid back to a compressor. <P>SOLUTION: This refrigerant charging device includes a refrigerant tank 10 to which the refrigerant of liquid state under normal temperature, is charged and further to which the inert gas is charged to an upper part of a liquid phase portion R of the refrigerant with a prescribed pressure over an atmospheric pressure while separating from the refrigerant, a refrigerant charging pipe 11 connecting the liquid phase portion R of the refrigerant tank 10 and a charging port 7 of the refrigerant circuit 6, and having an opening/closing valve 19, and a charging quantity adjusting mechanism controlling the opening/closing valve 19 so that the reduction of the refrigerant in the refrigerant tank 10 from opening to closing of the opening/closing valve 19 keeps a set value. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
