| 摘要 |
<p>A window (1) comprises a sash/frame structure (2,5) supporting a pane (3), a separate ventilation opening being adapted in the sash/frame structure (2, 5) for flow communication between the exterior and interior sides of the window. A tubular valve housing (9) is inserted in the ventilation opening at the interior side of the window, the flow area of the valve housing being partially covered by a seat surface (12). A closing body (14) is journalled in the housing (9) so as to be pivotable between an open position in which the closing body (14) overlaps the seat surface (12), and a closed position.</p> |
