| 摘要 |
A ventilation hood consisting of one part 1 which lies against the roof and part or chimney 2 usually reaching perpendicularly from the roof, where the piece lying against the roof has a recess 1a around which the chimney 2 is applied. The single plate is used partly as part of the part 1b which lies against the roof and partly as a part 2a of the chimney. In this plate there is a bending line 1g in order to give the part 1 lying against the roof an angle which is less than the 90 degree angle with the chimney part 2a. The part 1 lying against the roof is designed with three additional sheet metal parts joined with each other so that based on the vertical plane two additional sheet metal parts form a side with the shape of a circle sector 3a, with the radius being the same as the length 2b of the chimney along the sliding roof. <IMAGE> |
