Filter for treating air sucked by suction mouth of confined system in cargo area of aircraft, has lateral surface in form of conduit, where end face of conduit includes recess delimited by secondary filtration surface remote from conduit

摘要

The filter (22) has a lateral surface (38) in the form of a conduit, where the conduit includes an end face (42) at one end and an outlet (24) at the other end. The outlet of the conduit is connected to a suction mouth (26), where the conduit includes a filtering unit (48) for filtering. The end face includes a recess (50) delimited by a secondary filtration surface (52) remote from the conduit, where the secondary filter surface is equipped with a filter paper (54) with accordion folds.