| 摘要 |
PURPOSE:To prevent the elongation of a required time for heating up even when water is remaining in a bathtub by a method wherein the water in the bathtub is circulated and the temperature thereof is detected during pouring hot-water having a set temperature to rise the temperature of pouring hot-water than the set temperature when the detected temperature is lower than the set temperature. CONSTITUTION:When an automatic operation switch 22 is put ON, a hot-water pouring valve 4 is opened and hot-water, heated by a tap-controlled water heater 1 to a temperature preset in a main remote controller 21, is poured into a bathtub 9 through a hopper 6. When a water level sensor 14 has detected that a water level in the bathtub 9 has become higher than the level of an upper circulating pipe 10, a circulation pump 16 is operated to circulate the poured hot-water together with the water in the bathtub 9 and detect the hot-water under circulation in the bathtub 9 by a temperature detecting sensor 15. When the temperature of hot-water in the bathtub is lower than the set temperature, hot-water, having a temperature higher than the set temperature by several degrees, is poured. When the water level in the bathtub 9 has become a set water level, the hot-water pouring valve 4 is closed. When the temperature of hot-water in the bathtub is decided whether it has arrived at the set temperature or not and it is lower than the set temperature, additional heating is started. When the set temperature of hot-water in the bathtub has been achieved, the additional heating as well as the operation of the circulation pump 16 are stopped. |
