Air filter element with retaining geometry

Patent metadata

Field	Value
Publication number	US-9446339-B2
Application number	US-201414331130-A
Country	US
Kind code	B2
Filing date	Jul 14, 2014
Priority date	Jan 13, 2012
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

Disclosed is an air filter element ( 200 ) for insertion into an air filter housing, comprising an intake surface ( 275 ), a discharge surface ( 285 ), a filter medium ( 210 ), and a filter element-retaining device ( 240 ) which extends along at least a section of the periphery of the filter medium ( 210 ), between the intake surface ( 275 ) and the discharge surface ( 285 ), and which includes a retaining arrangement ( 270 ) that radially projects from the filter medium ( 210 ).

First claim

The invention claimed is:

1. An air filter element for insertion into an air filter housing ( 100 ), wherein the air filter element ( 200 ) has:
an intake surface ( 275 ),
a discharge surface ( 285 ),
a filter medium ( 210 ),
a filter element retaining device ( 240 ),
wherein the filter medium ( 210 ) extends between the intake surface and the discharge surface in an axial direction of the air filter element ( 200 ),
wherein the filter element retaining device is connected to the filter medium ( 210 ),
wherein the filter element retaining device ( 240 ) has a retaining arrangement ( 270 ) projecting radially from the filter medium ( 210 ) and a seal arrangement ( 260 ) with a circumferential seal line ( 261 ),
wherein the filter medium ( 210 ) has at least one edge ( 213 ) between the intake surface ( 275 ) and the discharge surface ( 285 ) on which a first filter medium side surface ( 211 ) and a second filter medium side surface ( 212 ) adjoin each other,
wherein the filter element retaining device ( 240 ) has a radial bulge ( 243 ) on the edge,
wherein the radial bulge ( 243 ) is arranged on a respective edge ( 213 ) of the at least one edge ( 213 ) of the filter medium ( 210 ), the respective edge ( 213 ) connecting the first filter medium side surface ( 211 ) and an connected adjoining filter medium side surface ( 212 );
wherein the radial bulge ( 243 ) projects radially outwardly beyond the first filter medium side surface ( 211 ) at the respective edge ( 213 ) but does not project over the adjoining filter medium side surface ( 212 ), such that the radial bulge ( 243 ) on the respective edge of the filter medium projects radially outwardly over only one side surface of the filter medium ( 210 );
wherein the seal arrangement ( 260 ) has a seal line ( 261 ) running around the filter medium ( 210 ), the seal line ( 261 ) running along the radial bulge.

2. The air filter element as set forth in claim 1 , wherein
the radius (R 2 ) along the profile of the seal line ( 261 ) is greater than the radius (R 1 ) of the edge.

3. The air filter element as set forth in claim 1 , wherein
the seal line ( 261 ) runs so as to curve radially away from the filter medium ( 210 ) along a section in the region of the radial bulge ( 243 ).

4. The air filter element as set forth in claim 1 , wherein
the seal line ( 261 ) runs so as to curve radially away from the filter medium ( 210 ) along several sections,
wherein a section is associated with each curved-away section in which the seal line ( 261 ) runs so as to curve radially toward the filter medium ( 210 ), the mutually associated sections following each other immediately, in the circumferential direction of the air filter element ( 200 ).

5. The air filter element as set forth in claim 1 , wherein
the seal line ( 261 ) runs so as to curve radially away from the filter medium ( 210 ) in one or more sections with an at least nearly constant radius of curvature and/or the seal line ( 261 ) runs so as to curve radially toward the filter medium ( 210 ) in one or more sections with an at least nearly constant radius of curvature.

6. The air filter element as set forth in claim 1 , wherein
the seal line ( 261 ) runs so as to curve radially away from the filter medium ( 210 ) along one section, runs straight along one section and, in turn, runs so as to curve radially away from the filter medium ( 210 ) along one section, the three sections following each other immediately, in the circumferential direction of the air filter element ( 200 ).

7. The air filter element as set forth in claim 1 , wherein
the seal arrangement ( 260 ) has an elastic sealing material ( 263 ) running around the filter medium ( 210 ), the sealing material running along the bulge.

8. The air filter element as set forth in claim 1 , wherein
the retaining arrangement ( 270 ) is arranged radially between the seal line ( 261 ) and the filter medium ( 210 ).

9. The air filter element as set forth in claim 1 , wherein
the radial bulge ( 243 ) extends substantially only over one of the outer edges ( 241 , 242 ) of the filter element retaining device ( 240 ).

10. The air filter element as set forth in claim 1 , wherein
the seal arrangement ( 260 ) is designed for the insertion of the air filter element ( 200 ) into an air filter housing ( 100 ) along an axial direction (A).

11. The air filter element as set forth in claim 1 , wherein
the retaining arrangement ( 270 ) has a retaining surface ( 271 ) that is designed to transfer the retaining forces between the air filter element ( 200 ) and an air filter housing ( 100 ).

12. The air filter element as set forth in claim 1 , wherein
the retaining arrangement ( 270 ) extends in the axial direction (A) along the filter medium ( 210 ) over at least a part of the filter medium, the part extending in the axial direction being embodied as a spacer from an air filter housing.

13. The air filter element as set forth in claim 1 , wherein
the retaining arrangement ( 270 ) has at least one recess ( 272 ) in the axial direction (A),
wherein the recess ( 272 ) is designed to receive an air filter housing-side projection ( 172 ),
the recess ( 272 ) tapering conically in the axial direction (A), at least in part, and/or at least one of the recesses ( 272 ) being particularly a slotted hole recess.

14. The air filter element as set forth in claim 1 , wherein
the air filter element has four filter medium side surfaces ( 211 , 212 ) and
wherein the filter medium side surfaces ( 211 , 212 ), and the intake surface ( 275 ) and/or the discharge surface ( 285 ) as well, are arranged at least substantially perpendicular to each other.

15. An air filter housing that is designed to receive a filter element as set forth in claim 1 , wherein the air filter housing has:
an intake opening ( 130 ),
a discharge opening ( 140 ),
a filter element receptacle ( 170 ),
wherein the filter element receptacle is located between the intake opening and the discharge opening,
wherein the filter element receptacle ( 170 ) has a bulge ( 143 ) aligned radially away from a filter element ( 200 ) to be inserted and a circumferential seal arrangement ( 160 ),
wherein the seal arrangement ( 160 ) has a circumferential seal line ( 161 ),
wherein the seal line runs in the radial bulge, the radius along the profile of the seal line ( 161 ) being greater than the radius of a housing inner edge of the air filter housing located on the bulge.

16. The air filter housing as set forth in claim 15 , wherein
the filter element receptacle ( 170 ) has a retaining surface ( 171 ),
the retaining surface ( 171 ) being located between the circumferential seal line ( 161 ) and the filter element ( 200 ) to be inserted.

17. The air filter housing as set forth in claim 15 , wherein
the filter element receptacle ( 170 ) has at least one projection ( 172 ) in the axial direction (A) of the filter element ( 200 ),
the projection being designed to engage in a filter element-side recess ( 272 ).

18. The air filter housing as set forth in claim 15 , wherein
the profile of the seal line ( 161 ) is curved in sections radially away from the filter element ( 200 ) to be inserted.

19. An air filter with an air filter element ( 200 ) as set forth in claim 1 and an air filter housing ( 105 ) as set forth in claim 15 ,
wherein the air filter element ( 200 ) is replaceably arranged in the filter element receptacle ( 170 ) of the air filter housing.

Assignees

• Mann & Hummel Gmbh

Inventors

• Rieger Mario
• Blossey Werner
• Neef Pascal
• Mbadinga Mouanda Gelase
• Epli Sven
• Schulz Franziska
• Schmid Martin
• Schwinghammer Alfons-Alois
• Krieger Joachim-Paul
• Kolmeder Michael

Classifications

• F02M35/0203

  by using clamps, catches, locks or the like, e.g. for disposable plug-in filter cartridges · CPC title

• B01D46/521

  using folded, pleated material · CPC title

• B01D46/10

  Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces · CPC title

• B01D46/0001

  Making filtering elements · CPC title

• B01D2279/60

  for the intake of internal combustion engines or turbines · CPC title