Concept for noise filtering an exhaust air stream

The embodiments of the present invention relate to a filter device (10) for purifying an exhaust air stream (11) by means of a filter arrangement (12), particularly in a domestic appliance, comprising a housing (13) for receiving said filter assembly (12) downstream to an inlet (14) the housing (13), said housing (13) downstream of recordable in filter assembly (12) has an outlet (15) for the exhaust air flow (11), said outlet (15) via a plurality of air guide ribs (16) having a downstream of the outlet arranged (15) relaxation area (17) for the exhaust air flow (11) is coupled.