| 摘要 |
The invention relates to a heat exchanger with a flue guide (R) of hollow profiles around which a coolant flows. The invention is further characterized in that the hollow profiles consist of bent sheet metal (1, 2). Preferably, every hollow profile consists of at least one double-bent sheet metal (2) and one unbent sheet metal (1) that are welded together. The inventive heat exchanger preferably consists of a plurality of hollow profiles that communicate by means of openings (3) through which the flue gas is guided. |
