US 11,986,758 B2
Filter element and filter arrangement
Dennis Stark, Mauer (DE); and Beate Brandt, Altlussheim (DE)
Assigned to MANN+HUMMEL GmbH, Ludwigsburg (DE)
Filed by MANN+HUMMEL GmbH, Ludwigsburg (DE)
Filed on May 25, 2023, as Appl. No. 18/323,913.
Application 18/323,913 is a continuation of application No. 16/524,763, filed on Jul. 29, 2019, granted, now 11,701,607.
Application 16/524,763 is a continuation of application No. 15/095,129, filed on Apr. 10, 2016, granted, now 10,363,506, issued on Jul. 30, 2019.
Claims priority of provisional application 62/186,600, filed on Jun. 30, 2015.
Claims priority of application No. 10 2015 004 380.3 (DE), filed on Apr. 10, 2015.
Prior Publication US 2023/0321577 A1, Oct. 12, 2023
Int. Cl. B01D 45/12 (2006.01); B01D 46/00 (2022.01); B01D 46/24 (2006.01); B01D 46/52 (2006.01); F02M 35/02 (2006.01); F02M 35/024 (2006.01)
CPC B01D 45/12 (2013.01) [B01D 46/0005 (2013.01); B01D 46/24 (2013.01); B01D 46/2414 (2013.01); B01D 46/52 (2013.01); F02M 35/02 (2013.01); F02M 35/02416 (2013.01); F02M 35/02441 (2013.01); F02M 35/02483 (2013.01); B01D 2271/02 (2013.01); B01D 2271/027 (2013.01); B01D 2273/30 (2013.01); B01D 2275/208 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A filter element, comprising:
an oval filter body of a filter medium elongated in a longitudinal direction having a central axis arranged extending through a center of the oval filter body, the oval filter body having:
an outer circumferential contour of the oval filter body of filter medium is formed by:
curvature contour sections; and
partially straight or curved contour sections;
wherein the curvature contour sections include:
a first curvature contour section and a second curvature contour section which are convex and have a first radius curvature,
wherein the first curvature contour section and the second curvature contour section form opposite sides of the outer circumferential contour of the oval filter body of filter medium;
wherein the partially straight or curved contour sections include:
a first partially straight or curved contour section and a second partially straight or curved contour section, wherein the first radius of curvature of the curvature contour sections is less than a radius of curvature of the partially straight or curved contour sections;
wherein the first partially straight or curved contour section and the second partially straight or curved contour section form opposite sides of the outer circumferential contour of the oval filter body of filter medium;
a first end plate having a radially inner contour forming a receiving opening extending through the first end plate, the first end plate secured to a first axial end of the oval filter body;
a circumferential sealing device arranged on outer surface of the first end plate, between a radially outer contour of the first end plate and the radially inner contour of the first end plate, the circumferential sealing device configured to radially seal the filter element off from a filter holder into which the filter element is receivable,
wherein the circumferential sealing device comprises:
two first sealing device curvature sections arranged one facing the other; and
two second sealing device curvature sections arranged one facing the other,
wherein the first sealing device curvature sections each have a first radius of curvature,
wherein the second sealing device curvature sections each have a second radius of curvature,
wherein the second radius of curvature of the second sealing device curvature sections is larger than the first radius of curvature of the first sealing device curvature sections,
wherein the two second sealing device curvature sections are each arranged between and connected directly or indirectly at opposing ends to different adjacent ones of the two first sealing device curvature sections,
wherein the circumferential sealing device is a continuous materially integral oval circumferential sealing device surrounding the radially inner contour of the first end plate, and
wherein the first sealing device curvature sections have a smaller radius of curvature than the radially outer contour of the first end plate and the radially inner contour of the first end plate and the oval filter body in the region of the second sealing device curvature sections;
wherein the second sealing device curvature sections at a location midway between the opposing ends of the second sealing device curvature sections is positioned at a radial distance dl relative to the outer circumferential contour of the filter body and/or a radially outer contour of the first end plate;
wherein the circumferential sealing device at a position of at least one of the opposing ends of the first sealing device curvature sections is positioned at a radial distance d3 relative to the outer circumferential contour of the filter body and/or the radially outer contour of the first end plate;
wherein the first sealing device curvature sections at a location midway between the opposing ends of the first sealing device curvature sections is positioned at a distance d2 relative to the outer circumferential contour of the filter body and/or the radially outer contour of the first end plate;
wherein d3>d2 and d3>d1, such that the circumferential sealing device is oval and has an outer contour which is not parallel to the radially outer contour of the first end plate.