| 摘要 |
PURPOSE:To provide an ice heat accumulation type refrigerator which can perform a cooling operation while performing a heat accumulation operation and its operation method. CONSTITUTION:An ice heat accumulation type refrigerator is equipped with a refrigerator 1, ice heat accumulation tank 2, water heat-exchanger 3, pump 4, control valve 5 and a piping system to connect them, and a brine is cooled by the refrigerator 1, and the water in the ice heat accumulation tank 2 is frozen by the brine and the cold heat is accumulated. At the time of radiation, the brine is cooled by the heat of melting of the ice in the ice heat accumulation tank 2, and the brine is introduced to the water heat-exchanger 3, and cold water is cooled to take out a cooling capability. For such an ice heat accumulation type refrigerator, at a brine outlet of the water heat-exchanger 3, a brine outlet temperature sensor 7 is provided. Also, a line which is branched from the line of the brine to return to the refrigerator 1 and feeds the brine to the water heat-exchanger 3 is provided. At the same time, in this line or a line after the water heat-exchanger, which continues from said line, a flow rate control valve 5 to control a brine flow rate to the water heat-exchanger 3 is provided, Then, a controller 10 which outputs an output signal to the brine flow rate control valve 5 with the signal of the output temperature sensor 7 as an input and controls the brine output temperature is provided.
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