Air filter element having a specific retaining geometry

Patent metadata

Field	Value
Publication number	US-9579596-B2
Application number	US-201414330919-A
Country	US
Kind code	B2
Filing date	Jul 14, 2014
Priority date	Jan 13, 2012
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

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, wherein the air filter element comprises:
an intake surface,
a discharge surface,
a filter medium, and
a filter element-retaining device,
wherein the filter medium extends between the intake surface and the discharge surface in an axial direction of the air filter element,
wherein the filter medium forms a plurality of connected axially extending lateral sides defining a radially outer periphery of filter medium, adjacent ones of the plurality of lateral sides forming an axially extending corner where axially extending end edges of adjacent ones of the plurality of lateral sides meet,
wherein the filter element-retaining device is connected to the filter medium,
wherein the filter element-retaining device extends along at least one section of the periphery of the filter medium between the intake surface and the discharge surface,
wherein the filter element-retaining device includes a retaining arrangement that radially projects from the filter medium,
wherein the retaining arrangement comprises at least one radially projecting convexity,
wherein a first one of the plurality of lateral sides of the filter medium has arranged spaced apart thereon a first one and a second one of the at least one radially projecting convexity,
wherein the first one of the at least one radially projecting convexity is arranged on the first one of the plurality of lateral sides adjacent to a first axially extending end edge of the first one of the plurality of lateral sides,
wherein the second one of the at least one radially projecting convexity is arranged on the first one of the plurality of lateral sides adjacent to an opposing second axially extending end edge of the first one of the plurality of lateral sides.

2. The air filter element according to claim 1 , wherein
the retaining arrangement comprises
at least one recess in the axial direction (A),
wherein the recess is designed to receive a projection located on the air filter housing side.

3. The air filter element according to claim 2 , wherein
the cross section of the recess decreases at least partially in the axial direction (A).

4. The air filter element according to claim 2 , wherein
at least one of the at least one recess is an elongated hole recess.

5. The air filter element according to claim 1 , wherein
the retaining arrangement comprises a plurality of recesses in the axial direction (A), which are disposed along the periphery of the filter element-retaining device in such a way that the recesses are distributed over an angle of at least 90 degrees.

6. The air filter element according to claim 1 , wherein
the retaining arrangement comprises a plurality of recesses in the axial direction (A),
wherein the plurality of recesses related to a central axis (Z) of the air filter element comprises an angular division, which defines a unique installation position of the air filter element in an air filter housing.

7. The air filter element according to claim 6 , wherein
the filter element-retaining device comprises
a sealing arrangement with a sealing line surrounding the filter medium,
wherein the recesses are disposed at least partially between the surrounding sealing line and the filter medium.

8. The air filter element according to claim 7 , wherein
the recesses disposed between the surrounding sealing line and the filter medium are closed recesses.

9. The air filter element according to claim 7 , wherein
the sealing arrangement comprises
an elastic sealing material and
the sealing line rests on the sealing material.

10. The air filter element according to claim 7 , wherein
the retaining arrangement comprises
a retaining surface, which is designed to transfer retention forces between the air filter element and an air filter housing,
wherein the retaining surface is disposed between the surrounding sealing line and the filter medium.

11. The air filter element according to claim 9 , wherein
the progression of the sealing line is curved radially away from the filter medium in sections.

12. The air filter element according to claim 1 , wherein
the retaining arrangement extends in the axial direction (A) along the filter medium over at least a portion of the filter medium,
wherein the portion extending in the axial direction is designed as a spacer from an air filter housing.

13. An air filter housing, which is designed to receive a filter element according to claim 1 , wherein the air filter housing comprises:
an intake opening,
a discharge opening,
a filter element receptacle,
wherein the filter element receptacle is situated between the intake opening and the discharge opening,
wherein the air filter housing further includes
a surrounding sealing line,
wherein the progression of the sealing line is curved radially away from a to-be-inserted filter element in sections,

wherein the filter element receptacle comprises
at least one projection in the axial direction (A) of the filter element,
wherein the projection is designed to engage in a recess on the filter element side.

14. An air filter having an air filter element according to claim 1 and an air filter housing according to claim 13 , wherein
the air filter element is disposed replaceably in the filter element receptacle 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

• B01D46/0005

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

• F02M35/02491

  Flat filter elements, e.g. rectangular · CPC title

• B01D46/0001 Primary

  Making filtering elements · CPC title

• B01D46/521

  using folded, pleated material · CPC title