| 摘要 |
PURPOSE:To make available a simplified piping arrangement without causing it to expose outwardly, by forming a vertically elongated piping clearance between the R-shaped angular corner of hot water storage tank and the angular corner portion of heat insulation material having a square section surrounding the hot water storage tank so that pipings may pass through the clearance. CONSTITUTION:A hot water storage tank 2 is formed substantially as a cubical configuration by a resin molding, and its angular corners 2a... are molded in an R-shaped configuration. The outer periphery of hot water storage tank 2 is surrounded by heat insulation materials 3a-3g. A vertically elongated piping clearance 28 is formed between the respective R-shaped angular corner 2a of hot water storage tank 2 and the respective angular corner 27 of heat insulation material 3 to arrange a gaseous cooling medium pipe 5, a liquid cooling medium pipe 6, a water feed pipe 9, a hot water feed pipe 13 and an overflow pipe 16 therein. The respective pipes can be arranged without being outwardly extended around a casing 1, and thereby improving the appearance of piping and saving the installation space of hot water feed device. Thus, the heat loss of hot water feed device can be lowered. |
