Ring filter element, in particular for oil separation of a crankcase, and filter device

US10596509B2 · kind B2 · utility

Assignee

• MANN+HUMMEL GmbH · DE

Inventors

• Markus Melde · Speyer, DE
• Markus Zuerker · Dudenhofen, DE

Key dates

• Filing date: Jul 20, 2017
• Grant date: Mar 24, 2020
• Expiry date: Dec 14, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2013/0438
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A ring filter element has a filter medium body flowed through radially form an interior of the filter medium body to an exterior of the filter medium body. A bypass valve is provided that is adjustable between a blocking position, separating a raw side at the interior of the filter medium body from a clean side at the exterior of the filter medium body, and an open position, connecting the raw side of the filter medium body with the clean side of the filter medium body. The bypass valve is arranged in an axial direction of the filter medium body at least partially external to a first axial end face of the filter medium body and extends radially at most up to the clean side of the filter medium body. The ring filter element is employed in a filter device of a crankcase.