| 摘要 |
PROBLEM TO BE SOLVED: To obtain an automatic tea supplier which can be efficiently used in an energy conservative condition, by providing a switch for the exhausted state, closing a water-supply solenoid valve and a controller to control the opening time of a discharge solenoid valve against the water level difference in the tank. SOLUTION: At the same time when a switch 66 for the exhausted state is put on, a controller 12 calculates the hot water volume between the water level detected by a laser sensor 14 and the low water level LWL and indicates a usable hot-water volume on an indicator 65. When a tea supply switch is put on, a hot beverage solenoid valve 3 is opened for a specified time interval to pour an appropriate volume of tea into a cup. The water head of the hot beverage solenoid valve 3 is calculated from the water level detected by the sensor 14 and an opening action time interval is computed in accordance with the water head. When the remaining hot water in the hot-water tank 11 has become less than a cup of supplied tea, tea supply is brought to a stop and it is displayed on the indicator 65. Then, the switch 65 for the exhausted condition is put off and the water supply solenoid valve 32 is opened to feed water up to the high water level HWL of the hot-water tank 11. |
