REFRIGERATING DEVICE, ADDITIONAL REFRIGERANT FILLING KIT USED IN THE SAME, AND ADDITIONAL REFRIGERANT FILLING METHOD OF REFRIGERATING DEVICE

摘要

PROBLEM TO BE SOLVED: To automatically filling an additional refrigerant without badly affecting a compressor after a heat source-side unit and a use-side unit are connected through a refrigerant pipe.;SOLUTION: This refrigerating device where an outdoor unit 100 and an indoor unit 200 are connected through a liquid-side refrigerant pipe 161 and a gas-side refrigerant pipe 162, a receiver tank 140 having a liquid level detecting means 150 is disposed in the liquid-side refrigerant pipe 161 in the outdoor unit 100, and a three-way valve 163 is disposed in the gas-side refrigerant pipe 162, further the device comprises a solenoid valve 311 disposed between a refrigerant cylinder 300 and the three-way valve 163 in additionally filling the refrigerant, and an opening signal is output to the solenoid valve 311 to start the filling of the additional refrigerant when both of discharge-side overheat degree of compressor 110 SH1≥T1, and suction-side overheat degree SH2≥T2 are satisfied in a state of a cooling operation in additionally filling the refrigerant (T1, T2 are prescribed threshold values).;COPYRIGHT: (C)2009,JPO&INPIT