| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat insulation support spacer in a vacuum heat insulation low temperature container in which an adiathermancy of the heat insulation support spacer of a transfer tube acting as a vacuum heat insulation low temperature container is excellent and a heat loss can be reduced.SOLUTION: An inner peripheral part and an outer peripheral part of plastic spongy body 39 are provided with plastic protection rings 40, 41 made of stainless steel, epoxy resin or the like having a low coefficient of thermal conductivity, for example, within an inner vacuum space of a vacuum pipe 4v having blades 4v, 4b, contact curve surfaces of the protection ring 40 and the spongy body 39 and contact curve surfaces of the protection ring 41 and the spongy body 39 are integrally assembled with adhesive agent or the like and then outgoing pipe 4f of a metallic bellow pipe for transferring refrigerant and the blade 4b are held inside the protection ring 40. |
