PROBLEM TO BE SOLVED: To rapidly and appropriately sterilize an inside of a hollow body with a hot water for sterilization.SOLUTION: A hollow body 1 is inverted while injecting a hot sterilization water a into the hollow body 1 from a first flow channel positioned at the center axis of a mouth 4 turned downward of the hollow body 1 to sterilize the inside of the hollow body, other hot sterilization water b is injected into the mouth from a second flow channel surrounding the first flow channel this hot sterilization water injected from the second flow channel is turned back within the mouth and joins the hot sterilization water injected into the hollow body 1 from the first flow channel to be flowed to the outside of the hollow body 1 along an inner surface of the mouth, in order to sterilize the mouth.COPYRIGHT: (C)2012,JPO&INPIT【課題】中空体内を殺菌用加熱液によって迅速かつ適正に殺菌する。【解決手段】中空体を倒立状態にし、その下向きになった口部4の中心軸に位置する第一の流路から殺菌用加熱液aを中空体1内に噴射して中空体内を殺菌しつつ、上記第一の流路を囲む第二の流路から他の殺菌用加熱液bを口部内に噴射し、この第二の流路から噴射した殺菌用加熱液を口部内で反転させ、上記第一の流路から中空体内に噴射した殺菌用加熱液と合流させて口部の内面に沿って中空体外へと流しつつ口部を殺菌する。【選択図】図2
