Fuel filter element and filter assembly
AssigneeMann+Hummel GmbH
InventorsChristine Oprisch, Martin Weindorf, Martin Veit, Felix Lippert
Life of this patent
Estimating the term…
Abstract
A fuel filter element has a screen fabric as a filter medium and a support tube supporting the screen fabric. A valve body guide for guiding a spherical valve body is provided. The valve body guide has a fluid channel and one or more support ribs for supporting the spherical valve body. The support ribs extend along a longitudinal direction of the fluid channel and project radially into the fluid channel. A filter assembly with such a fuel filter element is provided. The filter assembly has a ball valve with spherical valve body and a filter housing with a valve seat for the spherical valve body of the ball valve.
Claims18
An exchangeable fuel filter element configured for exchangeable installation into a filter housing pot having a valve seat, the fuel filter element comprising:
- a support tube which is axially elongated and surrounding a symmetry axis, the support tube having a disk-shaped connecting section formed on and covering a first axial end of the support tube;
- wherein the disk-shaped connecting section of the support tube comprises:
- a tubular valve body guide projecting axially outward from an axial outer side of the disk-shaped connecting section of the support tube;
- wherein the tubular valve body guide has a fluid channel extending axially through the tubular valve body guide and opening into an interior of the filter element;
- wherein the tubular valve body guide has a plurality of guide sections formed as projections, projecting axially outward away from an axially outer end of the tubular valve body guide, the plurality of guide sections spaced circumferentially apart about a circumference of the fluid channel;
- one or more support ribs formed on an interior wall of the tubular valve body guide and protruding radially into the fluid channel, the one or more support ribs extending in an interior of the fluid channel along a longitudinal direction of the fluid channel,
- wherein the one or more support ribs project radially and extend onto at least a portion of a radially inner surface of the plurality of guide sections;
- wherein the tubular valve body guide is configured and adapted to receive and guide movement of a spherical valve body in an interior of the plurality of guide sections at the fluid channel, such that the spherical valve body is movable between a closed state and an open state,
- wherein the spherical valve body, when in the open state, is configured and adapted to contact the one or more radially projecting support ribs in the valve body guide,
- wherein in the closed state, the spherical valve body is configured and adapted to close against the valve seat of the filter housing pot.
Dependencies are inferred from the claim text.