| 摘要 |
PROBLEM TO BE SOLVED: To provide hot water storage tank heat insulating structure having the compact shape and being easily assembled, and to provide a manufacturing method of a split heat insulating member capable of tightly filling an internal space of the split heat insulating members with foam insulation and exercising high heat insulating effect to form a heat insulating surrounding member disposed in a space between a tank and a square cylindrical exterior case. SOLUTION: This hot water storage tank heat insulating structure comprises the cylindrical hot water storage tank 9, the square cylindrical exterior case 27, and the heat insulating surrounding member 3 disposed in a space 28 formed by the tank 9 and the exterior case 27. The heat insulating surrounding body 3 is composed of four split heat insulating members 4, 4, ... divided at parts corresponding to corner portions 26 of the exterior case 27 on its cross-section. Each split heat insulating member 4 is integrally formed by a circular arc-shaped inner surface member 2, a flat face-shaped outer surface member 1 having a linear intermediate part, a vacuum heat insulating member 7 disposed in an internal space 6 therebetween, and a hard urethan foam member 8 filled in the internal space 6 on its cross-section. COPYRIGHT: (C)2008,JPO&INPIT
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