| 摘要 |
PURPOSE:To enable to perform good control of temperature and to easily obtain high temperature hot water by a method wherein a part of feed water is flowed to a temperature detector arranged at the upper part of a boiler shell. CONSTITUTION:The boiler shell 5 consists of an inner shell 1, in which a combustion chamber 2 is provided, and an outer shell 4. A feed water pipe 6 and a hot water supply pipe 7 are connected and open to a water chamber 3 at the upper end of the boiler shell 5. A feed water guide pipe 8, the lower end of which is open in the lower part of the water chamber 3, is provided in the feed water pipe 6 in such a manner as to make a clearance part 9. The temperature detector 11 is provided on the side wall at the upper part of the boiler shell 5. |
