Filter Element of a Filter Device, Filter Housing and Filter Device

A filter housing of a filter device, the filter housing comprising:

• at least one inlet for a fluid to be filtered and at least one outlet for filtered fluid, wherein the filter housing is configured to receive at least one exchangeable filter element arranged in the filter housing such that the at least one inlet is separated from the at least one outlet;
• at least one first housing part and at least one second housing part connected to each other to be at least partially separable from each other;
• wherein the at least one first housing part and the at least one second housing part delimit a seal chamber extending circumferentially relative to an axis of the filter housing and configured to receive at least one seal of the at least one filter element;
• wherein the at least one second housing part comprises at least one sealing surface oriented radially relative to the axis of the filter housing and configured to contact the at least one seal;
• wherein the at least one first housing part comprises a radially outer pressure-exerting section, positioned axially opposite the at least one sealing surface of the at least one second housing part, wherein the radially outer pressure-exerting section comprises a radially outer pressure-exerting surface configured to press the at least one seal against the at least one sealing surface of the at least one second housing part;
• wherein the at least one second housing part comprises at least one radially inner pressure-exerting section comprising a radially inner pressure-exerting surface, wherein the radially inner pressure-exerting surface is arranged radially inwardly relative to the at least one sealing surface of the at least one second housing part and is configured to press the at least one filter element axially relative to the axis of the filter housing;
• wherein the at least one second housing part further comprises a circumferential wall delimiting radially outwardly the seal chamber, wherein the circumferential wall is arranged radially outwardly relative to the at least one sealing surface of the at least one second housing part and radially outwardly relative to the radially outer pressure-exerting section of the at least one first housing part;
• wherein an axial spacing, measured between the radially outer pressure-exerting surface of the at least one first housing part and the at least one sealing surface of the at least one second housing part, is greater than a spacing measured between the radially outer pressure-exerting surface and the radially inner pressure-exerting surface.

A filter device comprising:

• a filter housing comprising at least one inlet for a fluid to be filtered and at least one outlet for filtered fluid;
• wherein the filter housing comprises at least one first housing part and at least one second housing part connected to each other to be at least partially separable from each other;
• wherein the at least one first housing part and the at least one second housing part delimit a seal chamber extending circumferentially relative to an axis of the filter housing;
• at least one filter element arranged inside the filter housing such that the at least one filter element separates the at least one inlet from the at least one outlet;
• wherein the at least one filter element comprises at least one filter bellows comprising at least one filter medium and the at least one filter element further comprises at least one seal arranged circumferentially relative to an axis of the filter element at an end face edge of the filter bellows, wherein the axis of the filter element coincides with the axis of the filter housing;
• wherein the at least one seal is arranged in the seal chamber;
• wherein the at least one seal comprises a circumferential fastening region and a circumferential seal region;
• wherein the circumferential seal region comprises an at least partially circumferential groove;
• wherein the at least one second housing part comprises at least one sealing surface oriented radially relative to the axis of the filter housing and configured to contact the at least one seal;
• wherein the at least one first housing part comprises a radially outer pressure-exerting section, positioned axially opposite the at least one sealing surface of the at least one second housing part, wherein the radially outer pressure-exerting section comprises a radially outer pressure-exerting surface configured to press the at least one seal against the at least one sealing surface of the at least one second housing part;
• wherein the at least one second housing part further comprises at least one radially inner pressure-exerting section comprising a radially inner pressure-exerting surface, wherein the radially inner pressure-exerting surface is arranged radially inwardly relative to the at least one sealing surface of the at least one second housing part and is configured to press the at least one filter element axially relative to the axis of the filter housing;
• wherein the at least one second housing part further comprises a circumferential wall delimiting radially outwardly the seal chamber, wherein the circumferential wall is arranged radially outwardly relative to the at least one sealing surface of the at least one second housing part and radially outwardly relative to the radially outer pressure-exerting section of the at least one first housing part;
• wherein the circumferential fastening region of the at least one seal comprises a radial fastening section and an axial fastening section, wherein the radial fastening section extends in a radial direction inwardly relative to the axis of the filter element and the axial fastening section extends with at least one directional component parallel to the axis of the filter element;
• wherein the radial fastening section and the axial fastening section engage about the end face edge of the filter bellows;
• wherein the radial fastening section comprises a first rear side facing away from the filter bellows, wherein the first rear side forms a holding surface engaged by the radially inner pressure-exerting section of the at least one second housing part;
• wherein the axial fastening section comprises a second rear side facing away from the filter bellows, wherein the second rear side forms a radially inner boundary of the at least partially circumferential groove, wherein the at least partially circumferential groove is configured to receive the radially outer pressure-exerting section of the at least one first housing part;
• wherein the at least one seal further comprises a circumferential seal projection forming a radially outer boundary of the at least partially circumferential groove opposite the axial fastening section, wherein the circumferential seal projection, viewed in an axial direction along the axis of the filter element, projects past the axial fastening section;
• wherein the circumferential seal region comprises an exterior side positioned axially opposite the at least partially circumferential groove relative to the axis of the filter element, wherein an at least axially acting circumferential sealing surface is arranged at the exterior side and is axially spaced farther away from an axial end face of the filter bellows than the holding surface of the radial fastening section;
• wherein an axial spacing, measured between a base of the at least partially circumferential groove and the at least axially acting circumferential sealing surface, is greater than a spacing measured between a transition of the base of the at least partially circumferential groove into the axial fastening section and a transition of the holding surface into the circumferential seal region;
• wherein an axial spacing, measured between the radially outer pressure-exerting surface of the at least one first housing part and the at least one sealing surface of the at least one second housing part, is greater than a spacing measured between the radially outer pressure-exerting surface and the radially inner pressure-exerting surface.