Filter element and filter arrangement

Patent metadata

Field	Value
Publication number	US-2016296867-A1
Application number	US-201615095129-A
Country	US
Kind code	A1
Filing date	Apr 10, 2016
Priority date	Apr 10, 2015
Publication date	Oct 13, 2016
Grant date	—

Abstract

A filter element ( 3 ), which has an oval cross-section in a longitudinal direction (LR) thereof and includes a circumferential sealing device ( 10 ) for, in particular, radially sealing the filter element ( 3 ) off from a filter holder ( 2 ) for the filter element ( 3 ), wherein the sealing device ( 3 ) has two first curvature sections ( 35, 36 ) arranged one facing the other and two second curvature sections ( 38, 39 ) arranged one facing the other, wherein the first curvature sections ( 35, 36 ) each have a first radius of curvature (R 35 , R 36 ) and the second curvature sections ( 38, 39 ) each have a second radius of curvature (R 38 , R 39 ), and wherein the first radius of curvature (R 35 , R 36 ) differs from the second radius of curvature (R 38 , R 39 ).

First claim

1 . A filter element ( 3 ), comprising:
an oval cross-section in a longitudinal direction (LR) thereof; an oval filter body ( 4 ) configured for through flow; and a circumferential sealing device ( 4 ) configured to radially seal the filter element ( 10 ) off from a filter holder ( 2 ) into which the filter element ( 3 ) is receivable; wherein the sealing device ( 3 ) has two first curvature sections ( 35 , 36 ) arranged one facing the other; and two second curvature sections ( 38 , 39 ) arranged one facing the other; wherein the first curvature sections ( 35 , 36 ) each have a first radius of curvature (R 35 , R 36 ); wherein the second curvature sections ( 38 , 39 ) each have a second radius of curvature (R 38 , R 39 ); and wherein the first radius of curvature (R 35 , R 36 ) differs from the second radius of curvature (R 38 , R 39 ).

2 . The filter element according to claim 1 , wherein
centers of curvature (M 35 , M 36 ) of the first radii of curvature (R 35 , R 36 ) are arranged on a first straight line ( 37 ); wherein centers of curvature (M 38 , M 39 ) of the second radii of curvature (R 38 , R 39 ) are arranged on a second straight line ( 40 ); and wherein the first straight line ( 37 ) is positioned so as to be perpendicular to the second straight line ( 40 ).

3 . The filter element according to claim 2 , wherein
the second straight line ( 40 ) is arranged centrally between the centers of curvature (M 35 , M 36 ) of the first radii of curvature (R 35 , R 36 ); and/or the first straight line ( 37 ) is arranged centrally between the centers of curvature (M 38 , M 39 ) of the second radii of curvature (R 38 , R 39 ).

4 . The filter element according to claim 1 , wherein
the filter element ( 3 ) comprises:
an end plate ( 7 ) and the filter body ( 4 ) is connected to the end plate ( 7 ); and
wherein the sealing device ( 10 ) is arranged on a front side ( 9 ) of the end plate ( 7 ) facing away from the filter body ( 4 ).

5 . The filter element according to claim 4 , wherein
the sealing device ( 10 ) has an outer contour ( 41 ) and/or an inner surface ( 43 ) or sealing surface is arranged so as not to be parallel to an outer contour ( 42 ) of the end plate ( 7 ) and/or an outer surface ( 29 ) of the filter body ( 4 ).

6 . The filter element according to claim 4 , wherein the filter element ( 3 ) comprises:
an inflow protector ( 12 ) enclosing the filter body ( 4 ) at least in some sections.

7 . The filter element according to claim 6 , wherein
the inflow protector ( 12 ) is adhesive fixed onto, welded onto, or fused onto the filter body ( 4 ) and/or the end plate ( 7 ).

8 . The filter element according to claim 6 , wherein
the inflow protector ( 12 ) is fluid-tight, impermeable to fluid flow through the inflow protector.

9 . The filter element according to claim 6 , wherein
the inflow protector ( 12 ) runs annularly about an exterior of the filter body ( 4 ).

10 . The filter element ( 3 ) according to claim 4 , wherein
the oval cross-section is defined by the filter body ( 4 ) from the filter medium; wherein the end plate ( 7 ) is an open end plate; wherein two first curvature sections of greater curvature that face one another and are connected to one another by two second curvature sections that face one another and are less curved than the first curvature sections; wherein the filter element ( 3 ) further comprises
an oval circumferential sealing device ( 10 ) configured to radially seal the filter element ( 3 ) in the filter holder ( 2 );
wherein the sealing device ( 3 ) comprises
two first curvature sections ( 35 , 36 ) of greater curvature that are arranged one facing the other; and
two second curvature sections ( 38 , 39 ) that are arranged one facing the other and are less curved than the first curvature sections;
wherein the second curvature sections ( 38 , 39 ) of the sealing device ( 10 ) are more curved than the second curvature sections of the oval cross-section defined by the filter body ( 4 ).

11 . The filter element according to claim 10 , wherein the second curvature sections ( 38 , 39 ) of the sealing device ( 10 ) are more curved than a comparison curve (VK) that can be compared with respect to the position thereof on the end plate ( 7 ) and is substantially parallel and concentric to an inner and/or outer contour ( 42 ) of the end plate ( 7 ) and/or the filter body ( 4 ).

12 . The filter element according to claim 10 , wherein
the second curvature sections ( 38 , 39 ) of the sealing device ( 10 ) are more curved than the inner and/or outer contour ( 42 ) of the end plate ( 7 ) and/or filter body ( 4 ) in the region of the second curvature sections ( 38 , 39 ).

13 . The filter element according to claim 10 , wherein
the second curvature sections ( 38 , 39 ) of the sealing device ( 10 ) are more curved than the inner and outer contour ( 42 ) of the end plate ( 7 ) and/or filter body ( 4 ) in the region of the second curvature sections ( 38 , 39 ).

14 . The filter element according to claim 10 , wherein
the first curvature sections of the sealing device and/or the filter body are connected to one another by the second curvature sections of the seal or filter body in such a manner that the first and second curvature sections each merge, in particular, continuously into one another.

15 . The filter element according to claim 10 , wherein
the sealing device ( 10 ) is arranged within an imaginary axial continuation of a filter body outer surface ( 29 ) and/or the cross-section of the filter body ( 4 ) and/or an outer contour ( 42 ) of an open end plate ( 7 ) in the longitudinal direction (LR).

16 . The filter element according to claim 10 , wherein
the sealing device ( 10 ) has a seal inner surface ( 43 ) in the middle of the less-curved curvature sections of the filter body and/or of the sealing device ( 10 ) has a smaller distance to the outer surface ( 29 ) and/or the outer contour ( 42 ) of an open end plate ( 7 ) than in the transitional region between the more- and less-curved curvature sections of the filter body and/or the sealing device.

17 . A filter arrangement ( 1 ), comprising
a filter holder ( 2 ) having a holding section ( 19 ); a filter element ( 3 ) held in the holding section ( 19 ) of the filter holder ( 2 ), the filter element including:
an oval cross-section in a longitudinal direction (LR) thereof;
an oval filter body ( 4 ) configured for through flow; and
a circumferential sealing device ( 4 ) configured to radially seal the filter element ( 10 ) off from a filter holder ( 2 ) into which the filter element ( 3 ) is receivable;
wherein the sealing device ( 3 ) has two first curvature sections ( 35 , 36 ) arranged one facing the other; and
two second curvature sections ( 38 , 39 ) arranged one facing the other;
wherein the first curvature sections ( 35 , 36 ) each have a first radius of curvature (R 35 , R 36 );
wherein the second curvature sections ( 38 , 39 ) each have a second radius of curvature (R 38 , R 39 ); and
wherein the first radius of curvature (R 35 , R 36 ) differs from the second radius of curvature (R 38 , R 39 ).

18 . The filter arrangement according to claim 17 , wherein
the holding section ( 19 ) comprises
an engagement region ( 27 ), with which a circumferential sealing device ( 10 ) of the filter element ( 3 ) engages, and
wherein the sealing device ( 10 ) rests against the engagement region ( 27 ) with an inner surface ( 43 ).

Assignees

• Mann & Hummel Gmbh

Inventors

• Stark Dennis
• Brandt Beate

Classifications

• F02M35/02441

  Materials or structure of filter elements, e.g. foams · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D2271/02

  Gaskets, sealings · CPC title

• B01D2271/027

  Radial sealings · CPC title

• B01D2273/30

  Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan · CPC title