Ventilation apparatus especially for clean rooms

摘要

The ventilation apparatus has several air vents especially fabric air vents. A pull-surface vent is formed from a pull plate (1) with pull-vents (2) arranged at predetermined intervals. On the inflow side of the pull-vents are selectively attachable hold covers (3). In one embodiment the pull-vents are arranged in a matrix at equal spacing from each other in the pull-plate. The hole covers may be formed as disks of sheet metal or plastic and have a free hole cross-section tuned to the predefined entry depth of the vertical current.