| 摘要 |
<p>PURPOSE:To make it possible to boil water properly by a method wherein circulating water takeout ports adopted to take out circulating water directed to a heat source device are provided in both upper and lower parts, respectively, of a heat accumulation tank and high and low temperature waters taken out from the takeout ports are mixed in a mixing ration variable in proportion to the temperature of the mixture. CONSTITUTION:When an operating switch 14 is turned ON at the time of supplying hot water, a circulation pump 13 is operated and the water in the heat accumulation tank 1 is taken out from the lower takeout port 3 and the upper takeout port 6. The water is then transferred to the heat source device 8 via a three-way valve 11 to be heated and returned to the heat accumulation tank 1 via a backward hot water pipe 16. In the above arrangement, the high temperature hot water A is constantly circulated through a hot water supply pipe 18, a hot water supply tap 19 and a backward pipe 20 and is taken out from the supply tap 19 for service from time to time. In this case, a flow rate adjust valve 14 is controled in proportion to the temperature of the high temperature hot water A detected by a senser 27. Further, the three-way valve 11 is switched through a motor 35 in proportion to the temperature of the high and low temperature water mixture detected by a sensor 26. In addition, when the temperature detected by the senser 26 drops, a gas valve 37 is opened by a motor 38 to re- operate the heat source device 8.</p> |
