VACUUM HEAT INSULATION MATERIAL AND REFRIGERATOR

摘要

PROBLEM TO BE SOLVED: To provide a refrigerator capable of enhancing a cover ratio by a vacuum heat insulation material with respect to an adiabatic wall without inhibiting foaming of foamed polyurethane foam.SOLUTION: A refrigerator includes piping 15 for heat radiation of an inner wall surface of an outer box 14; and a foamed heat insulation material 21 and a vacuum heat insulation material 19 in space formed between the outer box 14 and an inner box 17. The vacuum heat insulation material 19 has: a core material including a plurality of layers of fiber assemblies 22; and an outer packing material 23 which accommodates the core material and which is decompressed inside. The vacuum heat insulation material 19 includes: a first groove 19a which is formed by changing lamination thickness of the fiber assemblies 22; and a second groove 19b formed by pressing the outer packing material 23 which is decompressed inside. The first groove 19a is located at a thin wall portion where the thickness of the foamed heat insulation material 21 becomes thin.