| 摘要 |
PURPOSE:To make it possible to fill up a bath tub with hot water and control the temperature of the hot water in automatic made simply by connecting with an existing electric hot water heater and hence resolve the shortage problems of hot water. CONSTITUTION:There are provided an additional hot water heating heater 18 which heats the water in a bath tub 6, an additional heating circuit 18A laying out a pump 16 which circulates bath water through the additional heating heater 18, a hot water side flow rate control valve 9 which controls the flow rate of supply hot water of a hot water storage tank of an electric hot water heater 1A, a water side flow rate control valve 8 which controls the flow rate of water and a hot water injection circuit 22A connected with the additional heating circuit 18A from the two flow rate control valves 8 and 9 by way of a hot water injection on/off valve 22. A temperature detector 19 and a water level sensor 20 are installed to the additional heating circuit 18A where a power source is incorporated from a power source wiring connection section of the electric hot water heater 1A. In addition, power is controlled not to be supplied to both the heater for the electric hot water heater 1A and the additional heating heater 18 simultaneously in structure. |
