| 摘要 |
<p>PURPOSE:To decrease the heat quantity entering into a container through the conduction of a connecting pipe and to improve the space factor in the portion where the connecting pipe is arranged for reducing the size of the container, by constructing an inner container to have a double pipe structure in the portion where the connecting pipe which connects the inner container to a vacuum thermally-insulated container, is combined with the inner container for the purpose of increasing the length of the connecting pipe. CONSTITUTION:The upper side of an inner container 3 is provided with a partition pipe 8 consisting of a deep recess capable of receiving a connecting pipe 7. The connecting pipe 7 is inserted into the pipe 8 to be combined with the inner container 3. According to this construction, there is no need of providing another space outside the inner container 3 for arranging the connecting pipe 7, and therefore the external size of the cryogenic container can be decreased. Further, the deep partition pipe 8 allows the connecting pipe 7 to have an increased length. The quantity of heat entering through the heat conduction of the connecting pipe 7 can be decreased in an inversely proportional manner to the length of the pipe.</p> |
