| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure capable of completely taking out secondary refrigerant in a cooling storage wherein the heat of a heat radiating portion of a Stirling refrigerating machine is radiated by a secondary refrigerant circulating circuit. SOLUTION: In this cooling storage 1, the Stirling refrigerating machine 50 as a cold heat source is used to cool inside. The heat of the heat radiating portion 51 of the Stirling refrigerating machine is radiated by a thermosiphon circulating circuit 60 and a forced circulating circuit 110. The thermosiphon circulating circuit 60 and the forced circulating circuit 110 constitute one closed space sharing the secondary refrigerant. A charge pipe 140 is mounted on a position upper than a liquid level of the secondary refrigerant of the thermosiphon circulating circuit 60, and a purge pipe 141 is mounted on a position lower than the liquid level of the secondary refrigerant of the forced circulating circuit to charge and purge the secondary refrigerant. The purge pipe 141 is located at a discharge side of the circulating pump 111, and its tip is faced to a defrost water storage container 130. COPYRIGHT: (C)2006,JPO&NCIPI
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