Filter system having a primary and a secondary filter element and secondary filter element for such a filter system

US12134061B2 · kind B2 · utility

Assignee

• MANN+HUMMEL GmbH · DE

Inventors

• Bharatesh Alagouda · Survanagiri, IN
• Pascal Neef · Leonberg, DE
• Joachim Schuldt · Ludwigshafen, DE
• Deepthi Burugina Raviprakash · Kanchinakote, IN
• Mridul Sharma · Thiruvananthapuram, IN

Key dates

• Filing date: Dec 27, 2021
• Grant date: Nov 5, 2024
• Expiry date: Jan 12, 2043

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2265/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter system (100) having a housing (110), a fluid inlet (102) formed in a housing wall (112), a fluid outlet (108) formed in a housing wall (120), a primary filter element (50) and a secondary filter element (10). The secondary filter element (10) is arranged on a stand pipe (150) rigidly connected to one of the housing walls (120). The secondary filter element (10) includes a filter medium (16) forming a body (36) having at least one longitudinal seam (18) along a longitudinal axis (L) and an end cap (20) at its top region (12). The secondary filter element (10) and the stand pipe (150) are mutually connected by connection elements (22, 156). The secondary filter element (10) and the stand pipe (150) are configured with mutual self-positioning elements (30, 180) to arrange the secondary filter element (10) in a defined rotational position with respect to one or more struts (170).