| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a heat exchanger with a simplified structure capable of suppressing the generation of drain and of obtaining high heat exchange efficiency. SOLUTION: Heat absorption pipes 5, 6, 7 are provided at least on 3 lines vertically while penetrating a fin 4. Water to be heated is communicated from a starting end of the heat absorption pipe 5 located on the uppermost stream side of combustion waste to a final end 7 of the heat absorption pipe located at lowermost stream side. Between each heat absorption pipe 6 on the second line 17 located on the downstream side of the first line 16 located on the uppermost stream side of combustion waste and each heat absorption pipe 7 on the third line 18 as a boundary, there are provided a plurality of offset fins 19 that are heat absorption promotion means for increasing heat exchange efficiency at the fin 4b on the downstream side at the boundary position.</p> |
