| 摘要 |
<p>The present invention relates to a ventilation and sound-absorbent device for opening fillings. The opening filling consists of a frame (1) and a leaf (2). The interior side of the leaf (2) is provided with an elongate ventilation unit (5). The ventilation unit (5) contains a sound-absorbent material (58), which forms the ventilation and sound-absorbent duct (53) that is connected to the interior (IN) and to the exterior (EX) via a connection line (56). A fan (55) is located inside said ventilation and sound-absorbent duct (53). The air flows through the ventilation unit (5) in parallel to the plane of the leaf (2) when the leaf (2) is closed. Two ventilation units (5) can be configured as a heat-exchange apparatus.</p> |
