REFRIGERANT RECOVERING APPARATUS AND REFRIGERANT RECOVERING METHOD

摘要

A refrigerant recovering apparatus which comprises a recovery pipe (2), heat exchangers (25, 26), and check valves (30, 31, 37, 38), a refrigerant in the recovery pipe (2) being heated and cooled in the heat exchangers (25, 26) to give flow power to the refrigerant, this flow power being restricted in one direction by the check valves (30, 31, 37, 38) so as to transfer the refrigerant in one direction in the recovery pipe (2), whereby the refrigerant can be recovered efficiently from a gas line (3) and a liquid line (5), a gas extraction circuit (306) allowing a gas refrigerant in a recovery container (71) to merge with the refrigerant, which is cooled by the heat exchanger (25 or 26), in the recovery pipe (2), whereby it becomes possible to extract the gas from the recovery container (71), and recover the refrigerant to the recovery container (71) with a high efficiency.