Mann+hummel Gmbh

Filterwerk Mann + Hummel Gmbh

Ralf Poh

Manfred Winter

Klaus-Dieter Ruhland

Mario Rieger

Christian Thalmann

Stefan Becker

Werner Blossey

Guenter Goerg

Thomas Sieber

Michael Wolf

Oliver Steins

Josef Rohrmeier

Andreas Pelz

Edvard Kopec

Karlheinz Münkel

Peter Gohle

Jan Zink

Jens Hähn

Joachim Stinzendörfer

Rolf Sanders

Holger Stahl

Yassine Maaradji

A filter device has a compact filter made of a filter material that is wound spirally. A star filter that is made of a filter material that has folds arranged in a star shape surrounds the compact filter. The filter device has a cylindrical shape. A fluid to be filtered passes the compact filter in an axial direction and the star filter in a radial direction. The filter device is exchangeable and is mounted in a filter housing such that the compact filter and the star filter have a common raw side and a common clean side that are separated from each other.

Filter device

A filter element (), particularly for the intake air of an internal combustion engine. The filter element () has a filter body () and a seal () disposed circumferentially around the filter body (). The seal () is bonded to the filter body () with an adhesive () and includes a hard component () and a soft component (). The hard component (), which rests directly on a housing section, prevents the filter element () from moving relative to this housing section, and since the filter element cannot move relative to the housing section, damage to the filter element is avoided.

Filter element and filter system for the intake air of an internal combustion engine

A filter element for end face inlet formed of triangular channels which are alternately closed such that the fluid to be filtered must pass through the filter material in order to flow from the inlet side () to the discharge side (). The channels are formed by alternating flat layers () and folded layers (), whereby all sides of the inlet channels face a discharge channel. A particularly high filter efficiency is thereby achieved such that a large filter surface area and a high filter capacity are attained with a relatively small structural volume. The filter can be used, for example, as an air filter for various air filtration applications.

Filter element with end face inlets and discharge outlets

A filter element with a cylindrical structure having a filter medium mounted to a support element . The filter medium is fastened to the support element in such a way that no relative movement between these components is possible. This creates a heavy-duty assembly between filter medium and support element and increases filter life. It is thus possible for the filter to withstand a pulsating load, e.g., caused by backwashing of the filter medium, without risk of destroying the sensitive filter medium due to vibrations or any relative movement between the support element and the filter medium. This assembly may be produced by mounting the filter medium under tension to the support element and by fixing it with a reinforcement strip . The use of valves with switching times of less than 0.4 seconds makes it possible to achieve extremely short backwash pulses to clean the filter without risk of failure of the filter medium.

Filter element with a filter medium applied to a support body

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Neustadt, Germany

Ralf Poh