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

US12390752B2 · kind B2 · utility

Assignee

• MANN+HUMMEL GmbH · DE

Inventors

• Daniel Schmid · Sachsenheim, DE
• Timo Dirnberger · Erbach, DE
• Andreas Weber · Salzburg, AT
• Markus Schmidl · Pilsting, DE
• Christoph Goldbrunner · Dingolfing, DE
• Nadine Donauer · Fellbach, DE
• Philipp Hettkamp · Steinheim, DE
• Martin Lehmann · Wohlen, CH
• Markus Wagner · Ludwigsburg, DE

Key dates

• Filing date: Dec 29, 2022
• Grant date: Aug 19, 2025
• Expiry date: Jan 31, 2044

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2279/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

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.