| 摘要 |
<p>PURPOSE:To reduce the time element of delay of control due to a flow path system sufficiently and permit stable control of hot-water supplying temprature by a method wherein the upper part of a hot-water reserving tank is communicated with the inlet port of a heat exchanger and the flow path is formed so that the outlet port of the heat exchanger is connected to the hot-water supplying port in a short distance. CONSTITUTION:The lid of the hot-water reserving tank 6 is provided with an electric heater 12 and the heat exchanger 16, having a heat exchanging path 15 provided with an inflow port 13 at the lower part and an outflow port 14 at the upper part thereof, integrally. The inflow port 13 of the heat exchanging flow path 15 is communicated with the upper part of the hot-water reserving tank through the inflow path 17 provided integrally with the heat exchanger 16. The outflow port 14 of the heat exchanging flow path 15 is communicated with the hot-water discharging port 19 through the outflow path 18. A discharging hot-water temperature detecting thermistor 20 is inserted into the outflow path 18. Accordingly, the outflow port 14 and the hot-water discharging port 19 are closed mutually. The temperature of discharging hot-water, heated by the electric heater 12, is detected immediately by the thermistor 20 provided at the outflow path 18, therefore, the time element of delay in the flow path system may be restricted to a small level sufficiently.</p> |
