| 摘要 |
<p>The U-shaped guide (6) is fixed on the frame (4A) for supporting the window (5) and has horizontal flanges with a restrictor (8) between the flanges for allowing the necessary inflow of air for combustion. The air is directed towards the fireplace centre, the glazing and the tarring of the glazing. Air in the fireplace top is heated in a reduction chamber (10) and burnt gases directed by a mobile shutter (11) are reburnt for total combustion.</p> |
