| 摘要 |
The present invention refers to a method for preventing distribution of fire gases in a ventilating system that serves a number of fire compartments (15, 16), the ventilating air, during normal operating conditions, having a certain predetermined direction of flow at the inlet side and the outlet side of said fire compartments (15, 16). The invention also relates to a device for carrying out the method according to the invention. It is significant for the invention that when a predetermined lowest pressure drop is registered, for the ventilating air in said direction of flow, over a measuring spot at the inlet side or the outlet side, a blocking is effected of the flowing area of the ventilating air past said measuring spot.
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