PROBLEM TO BE SOLVED: To provide a heat sterilization device for performing heat sterilization of packaged foods, wherein the heat sterilization device is enabled to perform low cost control of the steam supply amount.SOLUTION: There is provided a heat sterilization device, which performs heat sterilization of objects 2 to be sterilized, by injecting high temperature water to the objects to be sterilized and in a sterilization vessel 1, and is a heat sterilization device detecting the temperature in the sterilization vessel to control the steam supply amount to the high temperature water so that the temperature in the sterilization vessel is the desired value, wherein a steam introduction control device 6 controlling the steam supply amount is provided by setting in series a full open/full shut control valve 6A opened and closed at two positions of full open and full close and a full open/minute open control valve 6B opened and closed at two positions of full open and minute open, and the steam introduction control device 6 performs open and close control of the full open/full shut control valve 6A and the full open/minute open control valve 6B based on the current temperature in the vessel and the calculated estimate of the temperature in the vessel after a predetermined time.COPYRIGHT: (C)2013,JPO&INPIT【課題】包装食品の加熱殺菌する加熱殺菌装置において、低コストで蒸気供給量の調節を可能とした加熱殺菌装置を提供する。【解決手段】殺菌槽1内の被殺菌物に高温水を噴射することで被殺菌物2を加熱殺菌する加熱殺菌装置であって、殺菌槽内の温度を検出し、殺菌槽内温度が目標値になるように前記高温水に対する蒸気供給量を制御している加熱殺菌装置において、蒸気供給量を制御する蒸気導入制御装置6は、全開と全閉の二位置で開閉する全開/全閉制御弁6A及び全開と微少開の二位置で開閉する全開/微少開制御弁6Bを直列に設置しておき、蒸気導入制御装置6は、現時点での槽内温度や演算で求めた所定時間後における槽内温度の予想値に基づき、全開/全閉制御弁6A及び全開/微少開制御弁6Bの開閉制御を行う。【選択図】図1
