| 摘要 |
PURPOSE:To supply hot-water in high temperature even when the quantity of collected heat is not large, and to prevent the temperature in hot-water from lowering by mixing of hot-water with cold water when the large quantity of hot-water is supplied at one time, by constituting a water heater so as to be able to supply hot-water, changing over the upper hot-water supply line to the lower supply line by a remote controller, based on the data from hot-water temperature sensor. CONSTITUTION:A solar heat water heater is provided with a remote controller 15 to indicate the temperature in a hot-water tank, an electric three-way valve 10 to change over an upper hot-water supply line 7 to a lower hot-water supply line 8 and an electric two-way valve 6. When the quantity of collected heat is small and the quantity of hot-water in a tank is not large, a hot-water temperature sensor 13 near an upper hot-water inlet 3 only senses the temperature and the quantity of collected heat which is small, and a small quantity of hot- water in high temperature can be used by changing over the supply line to the upper hot-water supply line. On the other hand, when the quantity of collected heat is large enough and the quantity of hot-water being reserved in the tank is also large, a hot-water temperature sensor 14 near a lower hot-water inlet 4 also senses these conditions, and the supply line is changed over to the lower hot-water supply line 8, so that hot water does not mix with cold water, and a large quantity of hot-water in high temperature can be used. |
