Mann+hummel Gmbh

Martin Lehmann

Karlheinz Muenkel

Daniel Schmid

Timo Dirnberger

Andreas Weber

Nadine Donauer

Gerrit-Tobias Speidel

Philipp Hettkamp

Michael Harenbrock

Andreas Pelz

Andreas Beck

Johannes Stuerner

Thomas Loehl

Christoph Schulz

Karlheinz Münkel

Jérôme Migaud

Thilo Mueller

Andreas Kloz

Heiko Brosi

Markus Schmidl

Christoph Goldbrunner

Eric Thébault

Anja Koronai-Bauer

Markus Wagner

Jan-Eric Raschke

Gilles Huet

Rodrigo Reyes

Thilo Müller

Tina Davis

Matthew Currin

Holger Bastuck

Sylvia Beier-Hoys

Bastian Meister-Magsino

Steffen Kroll

Johannes STÜRNER

A filter element for filtering a fluid has a filter body with a filter medium folded in a zigzag shape with folds extending in a fold direction. The filter body has an end edge bonding which seals fold ends of the folds. The filter body has an outer contour with recesses. The end edge bonding, in a region of the recesses of the outer contour of the filter body, is embodied discontinuously. The end edge bonding has at least one outwardly positioned first bonding segment and an inwardly positioned second bonding segment, viewed in the fold direction. The inwardly positioned second bonding segment, in a transverse direction relative to the fold direction, is arranged at a spacing to the at least one outwardly positioned first bonding segment. The at least one outwardly positioned first bonding segment and the inwardly positioned second bonding segment bond at least one common fold.

Filter element comprising a filter medium folded in a zig-zag-shape with discontinuous end-edge bonding, and method for producing same

A train station has at least one transportation route for traffic of vehicles, wherein the at least one transportation route is provided with a vehicle tunnel. At least one public waiting area is arranged adjacent to the at least one transportation route. An enclosure is provided in which the at least one public waiting area is arranged, wherein the enclosure has at least one side wall. At least one ambient air purification arrangement for purifying ambient air is provided that has one or more filter units for separating solid, liquid or gaseous ambient air pollutants from the ambient air. The one or more filter units are arranged at and/or in the at least one side wall of the enclosure.

Train station, in particular a tunnel-type train station, and use of a filter unit in a train station

A multi-modal multi-media air filtration system which can include: a base having one or more connection features and a filter media assembly, the filter media assembly being configured to attach to the base portion at a first end. The filter media assembly can then also include a first filter media extending across a first air flow path and a second filter media extending across a second air flow path. The air filtration assembly can then also include an actuation assembly configured to selectively open or close one of the first air flow path or the second air flow path so as to alternate the degree of filtration passing through the filter media assembly based on the degree of filtration provided by the first or second filter media.

Multi-modal multi-media air filtration system

A method and system of determining fiber diameter distribution of a fibrous media is disclosed. The method includes providing at least one digital image representative of the fibrous media, pre-processing the images, binarizing the images, generating virtual lines on the image, solving for fiber fringe points on each of generated line, solving for fiber center points as a mean of the fringe points, generating and growing measurement circles about the fiber center points, repositioning circles and center points to avoid fiber intersections, resizing the repositioned measurement circles to intersect the opposing fringes, and calculating fiber diameters and fiber spacing.

Method and system of determining the fiber diameter distribution of a fibrous media

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Karlsruhe, Germany

Martin Lehmann