| 摘要 |
PURPOSE:To make the thermal deformation of a separating panel allowable in an easy manner while keeping sealability between separating panels yet higher, by forming a hinge joint part of the separating panel in a way of overlapping a turnover piece. CONSTITUTION:When separating panels 11 have heat contraction due to the heat affection of a low temperature liquid housed inside an inner tub 1, turnover pieces 12 and 4 abutting on these separating panels each other come to develop with each of hinge joint parts 14 as a pivot, allowing these separating panels 11 to have the heat contraction. For this reason, a tensile stress is not produced in these separating panels 11 so that, notwith standing the thermal deformation in each of separating panels 11, the radius of an intermediate wall 4 can be kept constant at all times. |
