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1. (WO2017036860) FLUID FILTER WITH A VALVE UNIT AND FILTER ELEMENT FOR USE IN THE FLUID FILTER

Pub. No.:    WO/2017/036860    International Application No.:    PCT/EP2016/069901
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Aug 24 01:59:59 CEST 2016
IPC: B01D 35/147
B01D 35/153
B01D 29/15
Applicants: HENGST SE
Inventors: ARDES, Wilhelm
Title: FLUID FILTER WITH A VALVE UNIT AND FILTER ELEMENT FOR USE IN THE FLUID FILTER
Abstract:
The present invention relates to a fluid filter (1) comprising: a housing (2), a fluid inlet (21) and a fluid outlet (22), a filter element (3) separating an unclean side (25) and a clean side (26) from one another, and comprising a valve unit (5), wherein the valve unit (5) comprises a valve plate (50) arranged concentrically in the housing (2) and having the basic shape of a circular ring disc, having valve openings (61, 71) and a flexible circular-ring-disc-shaped valve membrane (53) arranged on the valve plate (50). The claimed fluid filter is characterised in that, - the filter element (3) comprises an axially protruding pressure-exerting ring (34) in the shape of a circumferential annular collar on the end face thereof facing the valve unit (5) in the installed state thereof, - in that when the filter element (3) is installed in the housing (2), said filter element with an end face (34') of the pressure-exerting ring (34) presses the valve membrane (53) axially onto the valve plate (50) and - in that the valve membrane (53), with the membrane region thereof pressed by the pressure-exerting ring (34) onto the valve plate (50), forms a seal separating the unclean side (25) and the clean side (26) of the fluid filter (1) from each other. The present invention also relates to a filter element (3) for use in the fluid filter (1).