| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot water storage type water heater for realizing high efficiency of an apparatus, without requiring to strengthen thermal insulation of a hot water supply pipe inside of an enclosing body, even if a heat radiating loss from a hot water storage tank is reduced. <P>SOLUTION: This hot water storage type water heater has a heating means 1 heating water, the hot water storage tank 2 storing hot water heated by the heating means 1, the hot water supply pipe 6 supplying the hot water to a hot water supply terminal, the enclosing body 10 storing the hot water storage tank 2 and the hot water supply pipe 6, a first thermal insulation material 18 arranged on a surface of the hot water storage tank 2 opposed to the hot water supply pipe 6, and a second thermal insulation material 19 arranged on a surface of the hot water storage tank 2 opposed to the enclosing body 10, and has the relationship that heat conductivity K1 and the thickness L1 of the first thermal insulation material 18 become L1/K1<L2/K2 to heat conductivity K2 and the thickness L2 of the second thermal insulation material 19. <P>COPYRIGHT: (C)2009,JPO&INPIT |
