| 摘要 |
PROBLEM TO BE SOLVED: To prevent the abnormal temperature rise of an evaporator upon a low load by promoting the rise of a high pressure. SOLUTION: An accumulator 6 is equipped with a hollow casing 15 for receiving liquid-phase refrigerant L, an inflow pipe 17 for supplying the refrigerant, flowing out of an evaporator, into the casing 15, and an outflow pipe 18 for conducting gas phase refrigerant G in the casing 15 to flow to a next process. In such an accumulator 6, a heat exchange promoting means for promoting the heat exchange between the refrigerant, flowing into the casing 15 through the inflow pipe 17, and the liquid phase refrigerant L, received in the casing 15, is provided.
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