| 摘要 |
The flue gas arising in the combustion chamber (2) is carried off from the boiler (3) by means of a flue gas conduit (1) which has a heat exchanger (4). The flue gas conduit (1) is guided through the latter in a zig-zag shape in such a manner that a repeated flow deflection of the flue gas guided therein takes place. The result of this is not only a better heat transmission but also a swirling of the flue gas, which is important for flue gas cleaning, and a centrifugal-force separation of the solid impurities. By means of a nozzle (7), cold water can be injected into the flue gas flow, as a result of which a further cooling of the flue gas is achieved and flue gas washing takes place. The water can be drained by means of a water separator (8) which has a filter (10). An exhaust fan (9) serves as a demister. The heating circuit liquid which comes from the boiler (3) via a forward run pipe (5) is, before it returns cold via the return run pipe (6), guided through the heat exchanger (4). By virtue of the fact that great cooling of the flue gas is guaranteed, the flue gas conduit (1) can be made of plastic. |
