| 摘要 |
PURPOSE:To always supply fixed temperature warm or cold water by supplying water when a sensor for detecting water level in a water tank at a plurality of levels detects a predetermined fall of the water level and interrupts the water supply, heats/cools water in the tank during the interruption to a predetermined temperature and repeat such operations until the tank is filled with water when the water level rises to a predetermined amount. CONSTITUTION:A water tank 2 covered with an insulating material 3 is fixed to the upper section of a cabinet 1. A water level sensor 30 detects plurality of water levels through a float 33 in the tank 2. When a predetermined fall of the water level is detected by the sensor 30, water is supplied from a water supply port 6. When the water level rises to a predetermined one, the water supply is interrupted. The water temperature in the tank 2 is set to a predetermined value during the interruption by energizing a heater 4 for heating or opening a feed valve 12 for cold water. The water suppy is again started this operations are repeated until the tank is filled with water. Thus, hot water or cold water with a little temperature difference from a predetermined temperature is always supplied. This apparatus is preferable for a tea supply machine and cold water supply machine. |
