| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustion equipment which has a small size and a low manufacturing cost while having two functions. SOLUTION: A heat exchanger 21 is divided into a first area 21a, a common area 21b and a second area 21c sequentially aligned in the aligning direction of fin plates 30, 31, 32. The exchanger 21 has first and second water flow tubes 33, 34 disposed in different heights from one another. The straight part 33a of the tube 33 is disposed in the area 21a of the exchanger 21, and the straight part 34a of the tube 34 is disposed in the area 21c of the exchanger 21. The adjacent parts 33b, 34b of the tubes 33, 34 are disposed in the area 21b, and hence the tubes 33, 34 are disposed in superposition in the area 21b. |
