| 摘要 |
PURPOSE:To always supply the almost fixed quantity of hot water regardless of the quantity of the hot water to be supplied by detecting the quantity of the hot water in a hot water tank, boiling water from an water tank, supplying the hot water by a hot water supply device and supplying the hot water from the hot water supply valve of timer control by using the difference of height. CONSTITUTION:When an operation part is pushed and operated, the hot water accumulated in a hot water tank 16 flows out by the difference of the height since a timer hot water supply valve 22 is electrified only during time corresponding to the operation. Then, the hot water is supplied through a hot water supply route 20 to a part 21, to which the hot water is supplied, and coffee liquid is extracted from a filter pack 25 and received in a receiver 26. When the water level of the hot water in the hot water tank 16 is lower than a fixed water level by the hot water supply operation, this level is detected by an water level sensor 19 and the electric heater of a hot water supply device 13 is electrified. Then, the water invading from an water tank 5 to an inside water route is heated and goes to be the hot water. Afterwards, the hot water is supplied through a hot water supply pipe 14 to the hot water tank 16. By this supply operation, the fixed quantity of the hot water is always secured in the hot water tank 16 and it is prevented by supplying the hot water that the temperature of the hot water in the hot water tank 16 is lowered. |
