| 摘要 |
<p>PURPOSE:To enhance the heat exchange efficiency by a structure wherein hot water storage tanks are formed around a combustion chamber in order to heat water and at the same time a large number of pipes are arranged in the combustion chamber in order to heat-exchange and, in addition, an upper hot water storage tank descending part is formed in order for hot air to fill in the combustion chamber. CONSTITUTION:A lower hot water storage tank 2, side hot water storage tanks, an upper hot water storage tank 4, a heat exchanger chamber 5 and a hot water supply tank 6 are arranged so as to surround a combustion chamber 1 equipped with a fire hole 8 and an exchaust intake 9. The tanks 2-4 are communicated to one another. At the same time, an upper hot water storage tank descending part 4 by bending the top plate 1c of the combustion chamber 1 downwards. Further, the top plate 1c is bent in a form of a groove at its central position in the direction of the width in order to form an upper hot water storage tank groove part 4b. Furthermore, the tank 2 is communicated through vertical pipes 13 to bottom pipes 12. Riser pipes 14 and 15 communicate to the pipes 12 or the tank 2 at their lower ends and to the groove part 4b at their upper ends. Finally, the tanks 6 and 4 are communicated to each other by means of communicating pipes 20. Thus, the heat exchange efficiency is enhanced, resulting in enabling to contrive to miniaturize the title apparatus.</p> |
