| 摘要 |
PURPOSE:To aim at improvements in cushionability and strength, by connecting a honey-comb heat insulating material part and a multilayer vacuum heat insulating paterial part both to a vacuum device. CONSTITUTION:A support member 6 of a primary heat insulating layer 10 is set up at the inner surface side of a tank steel plate 8. And, the primary heat insulating layer 10 installing a honeycomb heat insulating material 3 interposingly between metallic barriers 1a and 1b is extendedly welded to the support member 6. In addition, a secondary heat insulating layer 20 consisting of a multilayer vacuum heat insulating material 5 is installed between the primary heat insulating layer 10 and the tank steel plate 8. With this constitution, cushionability and strength both are improvable. |
