PROBLEM TO BE SOLVED: To provide a cooling device for cooling an object to be cooled even when a cooling means breaks down without the need of a large-scale backup device.SOLUTION: This cooling device includes a cooling tank 3 storing an object 2 to be cooled, a water supply means 4 to the cooling tank 3, a circulation means 6 circulating water supply between a heat exchanger 5 and the cooling tank 3, a cooling means 7 cooling water passing the heat exchanger 5 by indirect heat exchange, and a control means 8. The control means 8 selectively performs the first cooling of directly heat exchanging water cooled while operating the circulation means 6 and the cooling means 7, and the object 2 to be cooled, and the second cooling of cooling the object 2 to be cooled by making water supplied to the cooling tank 3 directly exchange heat with the object 2 to be cooled by operating the water supply means 4 without operating the cooling means 7.COPYRIGHT: (C)2012,JPO&INPIT【課題】大掛かりなバックアップ装置を必要とすることなく、冷却手段が故障しても被冷却物の冷却を行うこと。【解決手段】 被冷却物2を収容する冷却槽3,冷却槽3への給水手段4,給水を熱交換器5と冷却槽3との間で循環させる循環手段6,熱交換器5を通過する水を間接熱交換により冷却する冷却手段7および制御手段8を備え、制御手段8は、循環手段6および冷却手段7を作動させながら冷却された水と被冷却物2とを直接熱交換させる第一冷却と、冷却手段7を作動させることなく、給水手段4を作動させて冷却槽3へ供給した水と被冷却物2とを直接熱交換させて被冷却物2を冷却する第二冷却とを選択的に行う。【選択図】図1
