Filter element with venting function for suspension on a filter head, and a filter system
AssigneeMann+Hummel GmbH
InventorMartin Weindorf
Life of this patent
Estimating the term…
Abstract
A filter element for a fluid has a filter medium arranged in annular shape about a longitudinal axis to be flowed through by the fluid to be filtered radially. A coaxial outlet socket is arranged at an end of the filter element facing upwardly in filtering operation. The coaxial outlet socket has a fluid outlet channel for filtered fluid and a venting channel that vents a clean side and/or a raw side of the filter element. The venting channel coaxially surrounds the fluid outlet channel radially and extends at least in sections thereof in axial direction. A filter system is provided with a filter head that has a fluid inlet conduit, a fluid outlet conduit for filtered fluid, and a venting conduit, wherein the filter element is suspended from the filter head.
Claims23
A filter element for a fluid to be filtered, the filter element configured to be suspended from a filter head, the filter element comprising:
- an annular filter medium, surrounding a longitudinal axis extending through an open interior of the annular filter medium;
- a first end disk fixed onto an covering a first axial end of the annular filter medium, the first end disk having a central opening;
- a coaxial tubular outlet socket, coaxial to the longitudinal axis and arranged
- at the first axial end of the filter element, the coaxial tubular outlet socket including:
- at least one actuating member embodied as an axially extending projection projecting axially outwardly away from an axially outer end of the coaxial tubular outlet socket, the at least one actuating member configured to contact against and actuate a valve body of the filter head;
- wherein the coaxial tubular outlet socket comprises a fluid outlet channel for filtered fluid and a venting channel configured to vent a clean side and/or a raw side of the filter element, wherein the venting channel coaxially surrounds the fluid outlet channel in the radial direction and extends at least in sections thereof in an axial direction of the longitudinal axis, wherein the venting channel at an inlet side is connected by a first capillary channel with a raw side of the filter medium which is upstream of the filter medium relative to fluid flow, wherein the first capillary channel is arranged at a radially outer side of the venting channel and circumferentially surrounding the venting channel and the fluid outlet channel, wherein the raw side is arranged in a fluid flow direction upstream of the filter medium, wherein the first capillary channel is delimited in the radial direction inwardly by the coaxial outlet socket and in the radial direction outwardly by a first wall section of the first end disk of the filter element.
A filter element for a fluid to be filtered, the filter element configured to be suspended from a filter head, the filter element comprising:
- an annular filter medium, surrounding a longitudinal axis extending through
- an open interior of the annular filter medium;
- an end disk fixed onto an covering a first axial end of the annular filter medium, the end disk having a central opening, the end disk forming a first U-shaped annular socket having:
- an annular second wall section formed as an axially outwardly
- projecting annular wall on the end disk, the annular second wall section surrounding the central opening of the end disk and projecting axially outwardly away from the annular filter medium;
- and
- a first annular wall section formed as an axially projecting annular wall arranged in an interior of the annular second wall section and surrounding
- the central opening of the end disk, wherein an axially outer portion of the annular second wall section is joined to an axially outer portion of the first annular wall section by a back section of the end disk, such the first U-shaped annular socket opens in a direction towards the annular filter medium;
- a central tube arranged in the interior of the annular filter medium, the central tube forming a second U-shaped annular socket having:
- an annular end section formed at an axial end if the central tube, projecting into and engaging into the first U-shaped annular socket of the end disk;
- and
- an angled rim section formed at the axial end if the central tube and projecting axially outwardly to contact against a radially inner side of the first annular wall section of the end disk;
- a venting channel configured to vent a clean side and/or a raw side of the
- filter element, wherein the venting channel coaxially surrounds a fluid outlet channel in the radial direction and extends at least in sections thereof in an axial direction of the longitudinal axis, wherein the venting channel at an inlet side is connected by a first capillary channel with a raw side of the filter medium which is upstream of the filter medium relative to fluid flow, wherein the first capillary channel is arranged at a radially outer side of the venting channel and circumferentially surrounding the venting channel and the fluid outlet channel, wherein the raw side is arranged in a fluid flow direction upstream of the filter medium;
- wherein the first capillary channel is delimited in the radial direction inwardly by the coaxial outlet socket and in the radial direction outwardly by a first wall section of the first end disk of the filter element.
Dependencies are inferred from the claim text.