Filter element with a filter medium applied to a support body

US6645379B2 · kind B2 · utility

Assignee

• Filterwerk Mann & Hummel GmbH · DE

Inventors

• Peter Gohle
• André Roesgen · Winnenden, DE
• Christian Thalmann · Speyer, DE
• Holger Stahl · Forchtenberg, DE
• Ralf Poh · Neustadt, DE

Key dates

• Filing date: Aug 7, 2001
• Grant date: Nov 11, 2003
• Expiry date: Aug 7, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2201/0415
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter element with a cylindrical structure having a filter medium 11 mounted to a support element 10. The filter medium 11 is fastened to the support element 10 in such a way that no relative movement between these components is possible. This creates a heavy-duty assembly between filter medium and support element and increases filter life. It is thus possible for the filter to withstand a pulsating load, e.g., caused by backwashing of the filter medium, without risk of destroying the sensitive filter medium due to vibrations or any relative movement between the support element and the filter medium. This assembly may be produced by mounting the filter medium under tension to the support element and by fixing it with a reinforcement strip 12. The use of valves with switching times of less than 0.4 seconds makes it possible to achieve extremely short backwash pulses to clean the filter without risk of failure of the filter medium.