PROBLEM TO BE SOLVED: To provide a sterilizer capable of lowering the sterilization temperature during the step of sterilization.SOLUTION: A treatment tank 3 accommodates an article 2 to be treated, while storing water up to a preset water level. Circulation means 8 circulates storage water in the treatment tank 3 through a circulation channel 20. Heating means 9 blows steam into the circulation channel 20 for heating the circulation water. Control means controls the heating means 9 such that preset temperature inside the treatment tank 3 is maintained for heat sterilization of the article 2 to be treated. During sterilization, water feed means 4 and water discharge means 5 are controlled to gradually replace storage water in the treatment tank 3, so that the preset temperature can be lowered.COPYRIGHT: (C)2015,JPO&INPIT【課題】殺菌工程の途中で、殺菌温度を下げることのできる殺菌装置を提供する。【解決手段】処理槽3には、被処理物2が収容されると共に、設定水位まで水が貯留される。循環手段8は、処理槽3内の貯留水を、循環路20を介して循環させる。加熱手段9は、循環路20に蒸気を噴き込んで循環水を加熱する。制御手段は、処理槽3内を設定温度に維持するように加熱手段9を制御して、被処理物2を加熱して殺菌する。殺菌中、給水手段4と排水手段5とを制御して、処理槽3内の貯留水を徐々に入れ替えることで、前記設定温度を下げることができる。【選択図】図1
