| 摘要 |
<p>A ventilation and safety apparatus (30) for a facility having a shielded region (A) at least partially defined by enclosing elements (4a,b). The apparatus (30) is arranged so as to delimit the shielded region from a region (B) outside the facility, and comprises a sheet-shaped covering element (1; 51) substantially covering an opening (O) between the regions (A, B) and having a plurality of apertures (7) allowing fluid flow between the regions (A, B). The apparatus also comprises a stationary structure (2) having a substantially planar configuration and comprising an open grid structure (12, 13) in order to allow fluid flow through the stationary structure. The stationary structure is furthermore arranged proximal to the covering element (1; 51) on the side of the covering element facing the shielded region (A), The covering elemental; 51) and the stationary structure (2) are arranged in a substantially parallel relationship with a distance (G) between them, and arranged such that the stationary structure provides a support for at least a portion of the covering element (1 : 51) when the latter is pressed towards the shielded region (A). The covering element (1; 51) comprises at least one weak region (6; 56) that, is designed to be the first region of failure for the covering element.</p> |
