Hollow filter element, in particular for gas filtration

US11338237B2 · kind B2 · utility

Assignee

• MANN+HUMMEL GmbH · DE

Inventors

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

Key dates

• Filing date: Nov 1, 2018
• Grant date: May 24, 2022
• Expiry date: Feb 12, 2040

Classification

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

Abstract

A hollow filter element for insertion into an openable filter housing has a filter medium body configured as a hollow body surrounding an inwardly positioned flow space. At least one end disk is connected to the filter medium body and covers an axial end face of the filter medium body. A positioning element is arranged at the at least one end disk and interacts with a housing-associated blade of the filter housing. The positioning element receives the housing-associated blade with form fit in two different transverse directions relative to the longitudinal axis of the filter medium body. The positioning element has a positioning recess.