| 摘要 |
<p>The oven described comprises a heat exchanger (A) for heating a flow medium, in particular water, and two heat exchangers (B, C) for pre-heating the combustion air. The exchanger (A) is designed as an oven jacket (1) with a twin-wall, from which are extracted, in a metered manner, the combustion fumes by means of two channels (G, H) and into which is introduced, in a metered manner, the combustion air by means of four horizontal tubes (20, 21) provided with lateral outlet air passages (22). The heat exchangers (B, C) consist of sections (G', H') of the channels (G, H) and of two air guide tubes (30, 31), which communicate on the one hand with the outside atmosphere and are connected, on the other hand, with the tubes (20, 21) projecting into the oven jacket (1).</p> |
