| 摘要 |
PURPOSE:To shorten a time required for causing hot water within a bath tub to reach a set water level and a set temperature by a method wherein hot water of temperature determined in response to a calorie of remained water within the bath tub and a calorie of hot water when a bath is boiled up is fed into the bath tub. CONSTITUTION:It is determined whether water remains lower than a set water level within a bath tub or not in response to an output signal value of a water level sensor (ST1) and if there remains water, its amount is calculated (ST2). Water amount required for the water in the bath tub to reach a set water level is calculated (ST3), a temperature of the remained water is detected by a bath temperature sensor (ST4), and a temperature of hot water feeding is calculated in such a way that an entire calorie of all hot water when the hot water reaches a set temperature of the bath and the water level in the bath is equal to a sum of calorie of the remained water and calorie of hot water to be added (ST5), and then feeding of hot water to the remained water is started. If a bath-taking state is detected in the case hot water is being fed at a high temperature, the hot water feeding temperature is decreased down to an appropriate temperature (ST8). In the case that a bath-taking is not detected, the hot water feeding at a high temperature is continued and a valve is closed when the set water level is reached, a hot water boiling means is stopped so as to discriminate if a temperature of the bath tub is equal to the set temperature. |
