| 摘要 |
<p>PURPOSE:To provide a small-sized hot water generator having a superior responding characteristic and also having a thermal accumulating feature by a method wherein a steam generating water feeding flow rate control valve is controlled in response to a fed-out hot water set temperature of a water heater as well as an output of a water amount sensor provided to a water supplying inlet of a water heater. CONSTITUTION:Output signals of a fed-out hot water ON or OFF switch of each of operating portions of a water heater and each of water level sensors 32, 32' and 32'' are read and if all of them are ON, a solenoid driving circuit is turned on to enable its solenoid to be operated. Then, a flow rate F of hot water, its set temperature T and a temperature T0 of tap water are read. A required calorie of each of water heaters is calculated in reference to these values, these values are summed up to get a required total amount of calorie. A steam temperature Tv is read by a steam temperature sensor 37, a degree of opening of valve of the fed water controlling valve 7 is calculated by a designated equation and outputted. This output signal is sent to a voltage control circuit 38 so as to control the water feeding control valve 7.</p> |
