Mann+hummel Gmbh

Filterwerk Mann + Hummel Gmbh

Universitaet Stuttgart Institut Fuer Flugzeugbau

Michael Durst

Pius Trautmann

Nikolaus Moser

Markus Kolczyk

Olaf E Weber

Andreas Pelz

Josef Rohrmeier

Andreas Beck

Matthaeus Huber

Klaus Drechsler

Rainer Kehrle

Yves Klett

Nickolaus Moser

An air filter system with an air filter element having an inflow and an outflow face and comprising alternating flat and pleated layers, which are configured to form channels. The channels are alternately sealed in inflow and outflow direction, such that the medium to be filtered must pass through one of the layers as it flows from the inflow face through the filter to the outflow face. An adsorber element made of an activated carbon coated honeycomb structure is disposed adjacent the air filter element.

Air filter system

A filter element () with a tubular folded bag () of folded filter material, which has a plurality of fold blades () adjacent each other in the longitudinal direction () of the folded bag () a closure cover () is attached at at least one axial end () of the folded bag (). In order to provide a filter element which can be bent to any desired curved form while maintaining a high degree of filtration performance, and can be produced in a cost effective manner, the fold blades () of a folded bag () are provided with a combination of diagonal folds extending at an angle relative to each other such that the fold blades () in the longitudinal direction () of the folded bag extend back and forth and thereby form a three-dimensional crown structure (). At least the outer margin of the closure cover () has a form corresponding to the crown structure () of the fold blades ().

Filter element

A centrifugal oil separator which includes a disk separator disposed in a housing and has a plurality of spaced disks between which paths of flow for a gas to be cleaned are provided. The paths of flow connect an intake space located at the radial exterior of the disk separator with an inner, axial discharge channel. The intake space is supplied with pressurized gas via a rotation element that is configured as a compressor wheel and that is disposed in the area of an axial end face of the disk separator.

Centrifugal oil separator

A cyclone arrangement for separating particles or droplets from a fluid stream, including at least two cyclones (), which have a tangential intake opening () for the fluid stream and set the fluid stream into rotation so that due to the resulting centrifugal force, particles or droplets to be separated from the fluid stream may be discharged from the cyclone separator through discharge openings (). A plurality of cyclones are connected in parallel, and the intake openings () of the cyclones are closed or opened by a common slider (), which also has an opening () in the vicinity of each cyclone intake opening for passage of the fluid stream. The position and size of each slider opening is designed such that in various slider settings, the fluid stream will reach a different number of cyclone intake openings.

Switchable cyclone for separating particles or droplets from a fluid stream

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Frankenhardt, Germany

Michael Durst