A refrigerator has a storage compartment defined by a plurality of walls and a filter device. One of the walls has a through hole extending between an inner surface of the respective wall facing the storage compartment and an opposite outer surface of the respective wall. The filter device has a housing including a container, which defines an interior space and an access opening through which the interior space is accessible, and a lid, which is coupled to the container, and a filter material accommodated in the interior space. The housing is arranged such that the access opening is positioned corresponding to the through hole of the respective wall. The housing further contains a flange extending from the container, the flange is adhesively connected to the outer surface of the respective wall. The lid is movable to cover the access opening through the through hole of the respective wall.

An automated air filter comprises a frame, a plurality of reels mounted on the frame such that the reels are rotatable, a filter sheet extending between the reels and across the frame, and an actuator configured for rotating one or more of the reels. The automated air filter can automatically prevent accumulation of debris and avoid clogging, with little or no effort by the owner or user.