| 摘要 |
<p>In a liquid heating apparatus, an internal drum (2) is arranged at a spacing from and within an external drum (1), a combustion gas descending chamber (3) is provided therebetween, an outer water chamber (6) having a hot water outlet port (4) and a water supply port (5) in the upper and lower sections thereof is arranged outside of the combustion gas descending chamber, an inner water chamber (7) communicating by way of communicating tubes (8) in the upper and lower sections thereof with the outer water chamber is provided inside the combustion gas descending chamber, a combustion chamber (9) communicating with the combustion gas descending chamber in the upper section thereof is arranged inside the internal drum, an exhaust port (10) is provided at the bottom of the combustion gas descending chamber, a smoke collecting chamber (14) having a larger cross-sectional area than that of said exhaust port is provided under the exhaust port, and a smoke exhaust port (15, 16) is provided in this smoke collecting chamber. <IMAGE></p> |
