Blocking air gate for use as an alternative to a fire door in a building during a fire, whereby the gate incorporates fans to prevent noxious gases passing between building areas

摘要

Blocking air gate for blocking an opening (1) between first (2) and second (3) parts of a building, when there is a fire (7) or source of noxious gases (8) in the first part of the building. The gate (5) incorporates fans to suck air from the second, clear, part of the building and output it into the first part.