Insulation structure, manufacturing method and refrigerator insulation structure

摘要

PROBLEM TO BE SOLVED: To obtain a structural member of a heat insulating structure that has an uneven surface for mounting a penetration part, and at the same time suppresses the penetration of atmospheric gas for maintaining heat insulating performance by composing a part of an outer enclosure part by a molding, in which the circumference of at least two sheets is adhered to form a hollow part. ;SOLUTION: An outer enclosure 1 of an entire vacuum heat insulating structure is composed of external and internal cases 2 and 3. By using a plate metal, the external case 2 is formed in a box shape where each part of ceiling, floor, and both side surfaces is formed into one piece and front and back parts are opened. By using resin, the internal case 3 is formed in the box shape with a double structure formed of internal and external layers 3a and 3b. In the outer layer 3b, an uneven part for composing, for example, an accommodation shelf and a shelf pad, or the like is provided, the surface of the void-part side of the internal layer 3a is set to a simple flat shape. At the void-part side of the internal layer 3a, a gas penetration suppression layer 8 is applied to the internal layer 3a, so that the degree of vacuum in the void part of the outer enclosure can be maintained. In the gas penetration suppression layer 8, for example, an aluminum foil of approximately 50 μm thickness is used, and closely adhered to the void-part side of the internal layer 3a for holding and integrating both materials each other.;COPYRIGHT: (C)2000,JPO