| 摘要 |
The invention relates to a heat exchanger (3), especially for a hot-air generator (1) which is operated using oil or gas and which comprises a number of flat chamber-like modules (5). Said modules are stacked and interconnected in a mechanical and flowable manner via at least one flow opening (13) and via connecting sleeves surrounding the same. The flat chamber-like modules (5) are composed of shell halves (6) with straight edge sections (9) and corner areas (10). Said shell halves (6) are interconnected, especially welded, on their straight edge sections (9) in a smoke-tight manner and are sealed on their beveled and open corner areas (10) by seals (17) which are held in position by clamp clips (18). The invention also relates to a particular mechanical and flow connection of the flat chamber modules (5) via connecting sleeve sections (11, 12), whereby the free end of the connecting sleeve sections (11, 12), which is located on the middle passages and which projects from the respective flat chamber module (5), conically tapers up to the flow opening (13) in order to accommodate a clamping ring (14) and to fix the same by clamping. The inlet opening of the first flat chamber module (5) and the outlet opening of the last flat chamber module (5) of the heat exchanger (3) are fixed using tension rings (2).
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