HOT WATER STORAGE TANK COMPRISING HEAT INSULATION MATERIAL AND HEAT INSULATION MATERIAL THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a hot water storage tank comprising a heat insulation material having improved heat insulation effect and heat retaining effect compared to conventional materials without changing the volume of an armor structure and that of a hot water storage can structure. SOLUTION: In this hot water storage tank comprising a heat insulation structure 20 consisting of the hot water storage can structure 3, the armor structure storing the hot water storage can structure, and a thermoplastic foam molding structure filling the space between the hot water storage can structure 3 and the armor structure, a space section 50 is formed between the peripheral side surface of the hot water storage can structure 3 and the inner surface of the heat insulation structure 20. Favorably, a belt type spacer 30 is provided for partitioning the space section 50 and the inner peripheral surface of the belt type spacer 30 is brought into close contact with the peripheral side surface of the hot water storage can structure 3. COPYRIGHT: (C)2004,JPO&NCIPI