| 摘要 |
<p>The present invention concerns a ventilation valve (10), comprising a first louvre component (18a) and a second louvre component (18b). At least the second louvre component (18b) can be moved for diminishing or enlarging the flow gap (A2) between the louvre components (18a, 18b). The louvre components (18a, 18b) provide an elongated gap (A2) therebetween, diminishing in flow cross-section area in the progression direction (L) of the flow. At least the second louvre component (18b) of the ventilation valve (10) can be moved linearly for diminishing or enlarging the flow gap (A2).</p> |
