VACUUM HEAT INSULATION MATERIAL AND REFRIGERATOR

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. 【課題】本発明の目的は、発泡ポリウレタンフォームの発泡を阻害することなく、断熱壁に対する真空断熱材によるカバー率を高くすることが可能な冷蔵庫を提供する。【解決手段】外箱１４の内壁面の放熱用配管１５と、外箱１４と内箱１５との間に形成された空間内の発泡断熱材２１及び真空断熱材１９と、を備え、真空断熱材１９は、複数層の繊維集合体２２を含む芯材と、芯材を収納して内部が減圧された外包材２３と、を有し、真空断熱材１９は、繊維集合体２２の積層厚を変化させて形成した第１の溝１９ａと、内部を減圧した外包材２３を押圧して形成した第２の溝１９ｂと、を含み、第１の溝１９ａは発泡断熱材２１厚さが薄くなる薄壁部分に位置する。【選択図】図５