Anordning vid en byggnad för motverkande av spridning av brand och/eller brandgaser

摘要

In a device for preventing propagation of fire and/or fire gases in a building with at least two exhaust aire means (6) and an arrangement (11) generating a negative pressure and connected thereto through a conduit arrangement (8) are on one hand separate first conduits (9) communicating with the exhaust air means and on the other a second conduit (8) communicating with an arrangement (11) generating a negative pressure connected to a volume (12) being a part of the conduit arrangement (8), said volume (12) being formed by means of a container (14), which is arranged to form a liquid trap separating the first conduits (9) from each other when it is filled by liquid.