Filter device, in particular for gas filtration

US11826688B2 · kind B2 · utility

Assignee

• MANN+HUMMEL GmbH · DE

Inventors

• Mario Rieger · Freiberg, DE
• Pedro Miguel Pereira Madeira · Bietigheim-Bissingen, DE
• Stefan Kunze · Lörrach, DE
• Ulrich Dehnen · Kornwestheim, DE
• Johannes Stuerner · Amsterdam, NL
• Markus Beylich · Ludwigsburg, DE

Key dates

• Filing date: Jul 22, 2020
• Grant date: Nov 28, 2023
• Expiry date: Jun 11, 2042

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M35/02416
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter device is provided with a filter housing and a filter element arranged in the filter housing. The filter element is provided with an annular filter medium body that has an inflow side. The filter housing has a dirt collecting region in flow communication with the inflow side of the annular filter medium body. The dirt collecting region has an annular circumferentially extending configuration. A flow-tight separation element is arranged at or adjacent to the annular filter medium body. The dirt collecting region adjoins the flow-tight separation element. An inflow region is positioned at the inflow side of the annular filter medium body and immediately adjoins the dirt collecting region. The dirt collecting region has a radial extension relative to a longitudinal axis of the annular filter medium body, and the radial extension of the dirt collecting region is larger than a radial extension of the inflow region.