PROBLEM TO BE SOLVED: To reduce the variation of a temperature of a cooled object stored in a cooling container, for example, when the cooled object is put therein, to keep a proper storage temperature in the cooling container with high accuracy, and to reduce energy consumption.SOLUTION: The cooled object before put in the cooling container 8 is cooled by latent heat of the ice made in an ice heat storage device 28 by heat absorption by an evaporator 26 of a second refrigerating cycle 21, then the cooled object is put in the cooling container, and the cooling of the cooled object in the cooling container is performed by heat absorption by an evaporator 6 of a first refrigerating cycle 1. Further the water is boiled by exhaust heat generated in making ice in the ice heat storage device, or cooling the cooled object in the cooling container.COPYRIGHT: (C)2009,JPO&INPIT【課題】被冷却物の投入時などにおいて、冷却容器内に貯蔵されている被冷却物の温度の変動を小さくするとともに、冷却容器内の保管温度を精度良く適温にし、かつ、消費エネルギーを削減する。【解決手段】第2冷凍サイクル21の蒸発器26での吸熱により氷蓄熱装置28内に作られた氷の潜熱で、冷却容器8に投入前の被冷却物を冷却した後に、冷却容器内に投入するとともに、冷却容器内の被冷却物の冷却は第1冷凍サイクル1の蒸発器6での吸熱により行い、かつ、氷蓄熱装置内に製氷する際や冷却容器内の被冷却物を冷却する際に生じる排熱により、湯を沸かす。【選択図】図1
