CONNECTING STRUCTURE FOR VACUUM HEAT INSULATION TUBE

摘要

Provided is a connecting structure for a vacuum heat insulation tube with which the connecting portions of one vacuum heat insulation tube and another vacuum heat insulation tube can be connected so as to have the same diameter. The inner tube (81A) of one vacuum heat insulation tube is provided with a wide diameter, the outer tube (82B) of another vacuum heat insulation tube is provided with a narrow diameter to enable insertion into the inner tube (81A) of the one vacuum heat insulation tube, and the wide-diameter part of the inner tube (81A) and the narrow-diameter part of the outer tube (82B) are connected to each other by welding.