Annular filter element, in particular for gas filtration

US10773201B2 · kind B2 · utility

Assignee

• MANN+HUMMEL GmbH · DE

Inventors

• Andreas Franz · Ludwigsburg, DE
• Torsten Fritzsching · Leinfelden, DE
• Nadine Donauer · Fellbach, DE
• Marcel Holzwarth · Fayetteville, US
• Pedro Miguel Pereira Madeira · Bietigheim-Bissingen, DE
• Christoph Wittmers · Bietigheim-Bissingen, DE
• Manfred Winter · Bad Rappenau, DE
• Joachim-Paul Krieger · Dingolfing, DE
• Martin Gruber · Gangkofen, DE

Key dates

• Filing date: Nov 2, 2018
• Grant date: Sep 15, 2020
• Expiry date: Dec 7, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2275/208
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An annular filter element has a filter medium body configured to be flowed through by a fluid to be purified in a radial direction. A sealing element is arranged at the end face of the filter medium body and extends circumferentially around the end face. The sealing element has at least one first sealing section comprising a massive and large cross-sectional area and one or more second sealing sections with a cross-sectional area that is at least partially reduced in comparison to the large cross-sectional area. The one or more second sealing sections include a second sealing section with a groove-type recess, wherein the groove-type recess extends at least approximately across a length of the second sealing section with the groove-type recess or across a portion of said length.