| 摘要 |
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. |
