REFRIGERANT RECOVERY METHOD, REFRIGERATION AIR CONDITIONING DEVICE, AND REFRIGERANT RECOVERY SYSTEM

PROBLEM TO BE SOLVED: To provide a refrigerant recovery method capable of more efficiently performing refrigerant recovery than conventional ones.SOLUTION: A refrigerant recovery method where gas refrigerant in a refrigerant circuit of a multi-air conditioner 10 for a building is suctioned and compressed, and compressed refrigerant is condensed and recovered, includes a step of dividing the refrigerant circuit into a plurality of areas, communicating a refrigerant recovery part 21 to one of the plurality of areas and suctioning gas refrigerant. The refrigerant recovery method repeats a step of switching the area to which the refrigerant recovery part 21 is communicated and suctioning gas refrigerant from a different area from the area to which the refrigerant recovery part 21 is communicated. 【課題】従来よりも効率的に冷媒回収を行うことができる冷媒回収方法を得る。【解決手段】ビル用マルチエアコン１０の冷媒回路内のガス冷媒を吸引して圧縮し、圧縮した冷媒を凝縮して回収する冷媒回収方法であって、冷媒回路を複数の領域に分割し、複数の領域のうちの１つに冷媒回収部２１を連通させてガス冷媒を吸引する工程を備え、冷媒回収部２１が連通する領域を切り換えて、冷媒回収部２１が連通していた領域とは異なる領域からガス冷媒を吸引する工程を繰り返す。【選択図】図１