| 摘要 |
PURPOSE:To improve heat insulating effect in heat insulating sections, by charging a heat insulating material prefabricated into a spherical form into heat insulating sections that can be enclosed completely, in the manner that the spherical heat insulating elements are in close contact with each other. CONSTITUTION:A hollow space formed between an outer shell 12 and a storage container 13 is divided into a required number of heat insulating sections 18 that can be enclosed completely, and a pair of pipes 17, 17 or 17', 17' is arranged in each of the heat insulating sections 18. One of each pair of the pipes 17, 17 or 17', 17' is extended to the bottom of the section 18 while the other pipe is opened near the top of the storage container 13. With such an arrangement, spherical heat insulating elements (a) can be passed through the pipes and charged into the heat insulating sections 18, so that the heat insulating effect can be improved. |
