Recovery unit of recovery method and flammable refrigerant of flammable refrigerant

摘要

PROBLEM TO BE SOLVED: To provide a recovery method for a combustible refrigerant to work capable of safely recovering the combustible refrigerant such as isobutane in a refrigerant circuit installed in the low temperature apparatus and a freezer oil containing the combustible refrigerant at the time of properly treating a low temperature apparatus such as a refrigerator recovered to a household electric apparatus recycling facility etc.;SOLUTION: The recovery method for the combustible refrigerant comprises a process to suck in a mixture 12 of the refrigerant and the freezer oil upon making connection of a piercing valve to a compressor constituting the refrigerant circuit of the refrigerator and holding the refrigerant and the freezer oil, a process to introduce the mixture 12 to a refrigerant separator 9 decompressed in advance, store the refrigerant 13 temporarily, and gasify and separate the refrigerant 13 existing in dissolution in the freezer oil, a process to suck in the refrigerant 13 stored temporarily and the refrigerant 13 separated from the freezer oil by a pump 11 and to discharge to a tank 20, and a process to condense the refrigerant at a low temperature in the tank 20 while it is pressurized to a minor degree.;COPYRIGHT: (C)2007,JPO&INPIT