WARM WIND GENERATOR

PURPOSE:To provide a small-sized low-cost warm wind generator by realizing a heat exchanger which has a small size to be easily assembled and excellent sealability in a heat exchange type warm wind generator. CONSTITUTION:A cylindrical outer cylinder 21 is coaxially disposed in a cylindrical housing 3, and a plurality of tubes 22 are concentrically disposed therein. Both the ends of the cylinder 21 are closed except the passing part of the tube 22 at a front side plate 40 and a rear side plate 45, and the gap 23 of the adjacent tubes is closed by a partition plate 30 except the vicinity of the plate 40. A combustion chamber 50 is formed of the tube 22 and the plate 30, and combustion gas is discharged via a space 51. On the other hand, the atmosphere is heated via the tube 22 and exhausted. Since such a heat exchanger 20 is completed by assembling the tube 22, the plate 30 and the cylinder 21, a manufacturing man-hour is reduced, and a manufacturing cost can be decreased.