| 摘要 |
<p>PURPOSE:To detect hot water temperature with a single hot water temperature detector, control a heating medium with a signal from a boiling quantity setting means, heat the heating medium in conformity with power supply time required for a calculated amount of electric power, and boil up hot water property in a day time zone. CONSTITUTION:Water in a tank 1 is heated by a heating medium 2. The hot water detected by a hot water temperature sensor 5 and supply water temperature are input to a heating medium control circuit 8 with a signal of a power supply time measurement circuit, thereby controlling the power supply to the heating medium 2 by way of a relay 3. The heating medium control circuit 8 selects a signal from a boiling quantity set point station setter and the hot water detection sensor 5 by means of an analog multiplexer and outputs a control signal by a memory device and the CPU. A further attempt is made to calculate the amount of power equivalent to a required amount of hot water in a day time zone and power supply time so as to obtain equivalent heating time under control. It is, therefore, possible to boil up water property in simple structure.</p> |
