To improve the sterilization effect of a superheated steam sterilizer.SOLUTION: A superheated steam sterilizer includes a horizontal cylindrical portion having one end formed with a supply port for supplying an object to be sterilized and the other end formed with a discharge port for discharging a sterilized object. The superheated steam sterilizer further includes a rotating shaft portion that is rotatably disposed in the horizontal cylindrical portion. The rotating shaft portion includes a main shaft and a plurality of stirring blades formed around the main shaft to stir the object to be sterilized transferred in the axial direction of the main shaft. The superheated steam sterilizer further includes a steam outlet for irradiating superheated steam on the object to be sterilized transferred and stirred in the horizontal cylindrical portion. The plurality of stirring blades are arranged at at least three different angular positions in the circumferential direction of the main shaft.SELECTED DRAWING: Figure 3【課題】過熱蒸気殺菌装置の殺菌効果を向上させる。【解決手段】過熱蒸気殺菌装置は、被殺菌物を供給する供給口が形成された一端と、殺菌処理物を排出する排出口が形成された他端と、を有する横型筒状部を備える。過熱蒸気殺菌装置は、さらに、横型筒状部内に回転可能に配置される回転軸部を備える。回転軸部は、主軸と、主軸の軸線方向に移送される被殺菌物を撹拌するために主軸の周囲に形成された複数の撹拌羽根と、を備える。過熱蒸気殺菌装置は、さらに、横型筒状部内で移送および撹拌される被殺菌物に過熱蒸気を照射するための蒸気排出口を備える。複数の撹拌羽根は、主軸の周方向において互いに異なる少なくとも３つの角度位置に配置される。【選択図】図３
