| 摘要 |
<p>PURPOSE:To make it possible to use a large amount of hot water of an appropriate temperature for a long time by forming a heating circulation system provided with a hot water storage vessel, for guiding hot water within the vessel to the instantaneous water heater by use of a circulation pump for heating, and after heating, returning hot water gain to the vessel. CONSTITUTION:When a power source is turned ON, a circulation pump 4 for heating operates, and water extracted from the bottom part of a hot water storage vessel 1 flows into the instantaneous water heater 5 where ignition and heating of water are carried out to heat water to a predetermined temperature, and hot water thus heated is returned to the upper part of the vessel 1. In this case, when hot water feed faucets 8 are opened, feeing of hot water is carried out at a pressure corresponding to the water feed pressure. When hot water is fed, cool water in an amount equal to that of hot water is supplemented in accordance therewith to the lower part of the hot water storage vessel 1 through a water feed pipe, and feeding of hot water is carried out continuously or intermittently, cool water is replenished, and the interface between a low-temperature zone and a high-temperature zone rises up. Thus, when a temperature adjustor 6 detects a set temperature of 37 deg.C, the circulation pump 6 for heating again operates to carry out heating circulation. In this manner, since water of a predetermined suitable temperature is held at the upper part of the hot storage vessel 1, hot water of a suitable temperature can be taken out at all times.</p> |
