| 摘要 |
PURPOSE:To obtain a cryogenic container with which evaporated gas can be evacuated smoothly from a refrigerant container having less infiltrating heat and generating no voltage to bring about a natural convection in a communicating pipe. CONSTITUTION:A convection preventing cylinder 14, consisting of heat-insulating material, is tightly inserted into the inside surface of a communicating pipe 12, and at the same time, an evaporation gas exhaust hole 15 is provided in the convection preventing cylinder 14 for the purpose of preventing the transmission of heat infiltrated from the outside through the communicating pipe 12 which is penetratingly provided in a cryogenic container. |
