HOT WATER FEEDING DEVICE FOR BATH TUB

PURPOSE:To enable hot water to be fed smoothly and further enable an additional heating of the hot water without having any fear of heat burn and without increasing an amount of hot water by a method wherein a mixing valve for supplying a hot water of low temperature and an additional heating device for heating up the water to the desired temperature are provided. CONSTITUTION:A feeding of hot water to be fed from a plug 2 or its termination in supplying operation is changed over by a bath tub hot water feeding valve 11 and a hot water temperature is adjusted by the mixing valve 3. When the hot water temperature is set and an automatic operation switch is depressed, the bath tub hot water feeding valve 11 is opened, the hot water of low temperature controlled to be lower than the set hot water temperature with the mixing valve 3 is fed into the bath tub 1 from the plug 2. When a water level sensor detects that the hot water is accumulated to the desired water level, the bath tub hot water feeding valve 11 is closed to terminate the feeding of hot water from the plug 2, the additional heating device 4 is operated, the hot water of low temperature sucked from the suction port 5 is heated by the additional heating unit 4 and discharged into the bath tub 1 from the heating port 6. When the hot water temperature sensor senses that the hot water temperature is reached to the desired hot water temperature, the additional heating device 4 is stopped.