| 摘要 |
PURPOSE:To make a fuel saving and facilitate a cleaning of water pipes and chimney by a method wherein a plurality of water pipes are passed from a front hot water chamber of a bath boiler being arranged in an upward increasing gradient to a bath tub through a discharging pipe and then passed from the bath tub through a hot water chamber and the furnace via a return pipe and to a rear supplying chamber. CONSTITUTION:Water heated in a bath furnace 2 is passed through a hot water chamber 7 and discharged into a bath 12 through a hot water discharging pipe 9, the water at the lower part of the bath 12 is passed through the return pipe 10 and sucked into the supplying chamber 8 and heated as it is passed in the return pipe 10. The return pipe 10 is arranged in such a manner as it is faced upwardly to the supplying chamber 8 in an upward increasing gradient, so that the water is sucked in such a way as it is flowed into the supplying chamber 8. Then, the sucked water is also heated by the water pipe 4, the entire circumference of the bath boiler 2 and its upper part and ascended and then discharged into the bath 12 through the hot water discharging pipe 9. When the inside of the water chamber 1 is cleaned, the water is removed and the lid 11 is also removed, resulting in that the hot water scale can completely be removed from around the bath boiler 2, hot water chamber 7 and supplying chamber 8. Further, the brush can be inserted into the water pipe 4 and the return pipe 10 removed.
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