To provide a hot-water supply unit of excellent energy saving performance capable of reducing warmth retaining electric energy in warmth retaining and heating, while maintaining/enhancing using convenience.
A water supply buffer 12 is arranged in an outside of a heating vessel 5 to feed water into the heating vessel 5 gradually after the supplied water supplied from a city water pipe 2 into the heating vessel 5 is stored temporarily. The using convenience is maintained/enhanced and an excessive space other than that for storing hot water in the heating vessel 5 is reduced remarkably by arranging the water supply buffer 12 requiring a volume equal to at least the once supply water to the heating container 5 in the outside of the heating container 5, thereby preventing the heat of the hot water from being lost, reducing the warmth retaining electric energy in retaining the warmth and heating, and making the energy saving performance excellent.
| JPS61225540 | HOT WATER STORAGE TYPE WATER BOILER |
| JP2009506295 | Hot water distributor |
OKABE YOSHIYUKI
Hiroki Naito
Daisuke Nagano