| 摘要 |
<p>PURPOSE:To make a pressurizing pump to feed hot water needless, by connecting a cistern, into which water is fed by a ball tap, installed in higher position than a heat accumulating tank, to the upper part of a heat accumulating tank, by an expansion pipe, and by connecting a hot water feed pipe to the middle part to the expansion pipe or to the upper part of a heat accumulating tank. CONSTITUTION:Water is fed into a cistern 11 which is provided in higher position than a heat accumulating tank 3, from a water feed pipe 6, by the intermediary of a ball tap 7, passing through a forward pipe 4 and a return pipe 5 on a heat collecting circuit, and is fed into the lower part of a heat accumulating tank 3. The cistern 11 and the upper part of a heat accumulating tank 3 are connected by an expansion pipe 12, while a hot water feed pipe 8 is connected to the middle part of the expansion pipe 12 or to the upper part of a heat accumulating tank 3. With such an arrangement, when a water tap 10 provided to the hot water feed pipe 8 is opened, hot water is pressurized to be fed by the potential head of the cistern 11. On the other hand, heat accumulating operation is taken place in such a manner that a circulating pump 2 on a forward pipe 4 in a heat accumulating circuit is operated by a differential temperature thermostat, and the water in the heat accumulating tank is heated by a heat collector 1. With the above-mentioned arrangement, a pressurizing pump to feed hot water is made needless, in addition, hot water in the temperature, suitable to be taken out, can be stably obtained, since hot water is not mixed with cold water.</p> |
