Abstract: A filter module (1) for cleaning a fluid, including a housing (2) with an inlet opening (3) and an outlet opening (4), wherein the housing (2) forms an accommodation space (5) in which at least one filter element (6) is accommodated, wherein the filter element (6) exhibits a filter medium (7) which is configured like a block in view of the problem of configuring a filter model such that the dead space in the housing is as small as possible, that the filter module has good filter performance and a cost-effective as well as time-saving fabrication and offers effective use of a filter medium, characterized in that the filter medium (7) is pleated and is telescoped into a block (8).

Abstract: A replaceable filter module is configured to be flanged to a wall of a housing that holds a fuel cell. The filter module includes a filter element with a filter medium and at least one of a seal and sealing elements. The seal includes one of a key-and-lock connection, a plug-and-socket connection, and a tongue-and-groove connection.

Abstract: A humidifier (1), including at least one housing (2), in which multiple fibers (3) constructed as water-permeable hollow fiber membranes are arranged, wherein a first air stream (4) is passed inside the fibers (3) and a second air stream (5) is passed outside the fibers (3), and wherein the housing (2) is of flattened design.

Abstract: Disclosed is a hollow fiber system for a humidifier, including hollow fibers that are permeable to steam. A first air flow can be conducted within the hollow fibers while a second air flow can be conducted outside the hollow fibers. The hollow fibers are located at least in part at a distance from each other via a device (6) that is disposed between the hollow fibers, respectively.

Abstract: A humidifier including a housing which is used to receive a humidifier module. The housing can be connected by the housing cover and is provided with at least one first sealing element, which seals the humidifier module in relation to the housing. The humidifier module is arranged in an axially displaceable manner on the first sealing element.

Abstract: A filter arrangement for cleaning fuel cell supply air, including at least two filter layers, whereby a first filter layer is designed as a coarse filter and a second filter layer as a fine filter, wherein the second filter layer includes an electret filter material.

Abstract: A humidifier (1), including at least one housing (2), in which multiple fibres (3) constructed as water-permeable hollow fibre membranes are arranged, wherein a first air stream (4) is passed inside the fibres (3) and a second air stream (5) is passed outside the fibres (3), and wherein the housing (2) is of flattened design.

Abstract: Disclosed is a hollow fiber system for a humidifier, including hollow fibers that are permeable to steam. A first air flow can be conducted within the hollow fibers while a second air flow can be conducted outside the hollow fibers. The hollow fibers are located at least in part at a distance from each other via a device (6) that is disposed between the hollow fibers, respectively.

Abstract: Arrangement (1) for supplying a fuel cell (2) with recycled reaction gas (3), comprising a humidifier (4) with a first inlet (5) for the reaction gas to be humidifed (3) and a second inlet (6) for the moisture carrier (7), a filter arrangement (8) being pre-connected to the first inlet (5) and/or the second inlet (6).

Abstract: A humidifier including a housing which is used to receive a humidifier module. The housing can be connected by the housing cover and is provided with at least one first sealing element, which seals the humidifier module in relation to the housing. The humidifier module is arranged in an axially displaceable manner on the first sealing element.