| 摘要 |
<p>PURPOSE:To provide a small-sized hot water generator having a superior responding characteristic and capable of accumulating heat as required by a method wherein an injection water nozzle pipe connected to a water feeding pipe on the downstream side of a water feeding flow rate control valve and a controlling means for controlling a steam generating water feeding flow rate control valve in response to an output from a flow rate sensor provided to a water feeding inlet port of a water heater and an output from a temperature sensor provided to a hot water flowing-out port of the water heater are provided. CONSTITUTION:A nozzle pipe 4 is communicated with a feeding water branch pipe 36 and fed tap water is injected toward an inner wall surface of an evaporating pipe 3 from an extreme end of it. A set fed out hot water, a fed out hot water temperature, steam temperature and water volume are read through a hot water temperature sensor 31, steam temperature sensor 37 and water volume sensor 30. A required degree of opening of the valve is calculated by a desired equation in response to the detected value. A degree of opening of a valve required for the present degree of opening of the valve is added to correct a degree of opening of the valve. Along with this operation, a degree of accommodation of the water feeding control valve 7 is calculated by the desired equation, a degree of opening of the valve required for the present degree of opening of the valve, the output signal is sent to a voltage control circuit to control the water feeding control valve 7 in such a way as its degree of opening is increased.</p> |
