Air filter element

Patent metadata

Field	Value
Publication number	US-9873073-B2
Application number	US-201113997193-A
Country	US
Kind code	B2
Filing date	Dec 19, 2011
Priority date	Dec 23, 2010
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

An air filter element for an air filter may include a first end plate and a second end plate spaced apart from each other in an axial direction and configured to bound the filter element in the axial direction. The first filter body may be arranged axially between the first and second end plates. A second filter body may be arranged axially between the first and second end plates. An intermediate plate may be arranged axially between the first and second filter bodies and have an intermediate plate area enclosed by an intermediate outer contour and a first end plate area enclosed by a first outer contour.

First claim

The invention claimed is:

1. An air filter element for an air filter, comprising:
a first filter body comprising a filter material,
a first end plate and a second end plate spaced apart from each other in an axial direction and configured to bound the filter element in the axial direction,
wherein the first filter body is arranged axially between the first and second end plates,
a second filter body arranged axially between the first and second end plates,
an intermediate plate arranged axially between the first and second filter bodies,
wherein the intermediate plate has an intermediate plate area greater than at least one of a first end plate area of the first end plate and a second end plate area of the second end plate;
wherein the first and second end plates are closed and the intermediate plate defines at least one intermediate opening extending through a first interior bounded by the first filter body to a second interior bounded by the second filter body;
wherein the first filter body is U-shaped having an open side sealed with a closure plate, the closure plate defining a connection opening creating a fluid connection to the inside of the filter element.

2. The air filter element according to claim 1 , wherein the first and second end plates each project onto the intermediate plate completely perpendicularly to the intermediate plate.

3. The air filter element according to claim 2 , wherein the first and second plates form at least one projection at the intermediate plate and an overlap region is formed at an area of the projection and defines at least one opening, wherein the overlap region is smaller than the projection of at least one of the end plates.

4. The air filter element according to claim 1 , wherein the first and second end plates are one of geometrically different and identical.

5. The air filter element according to claim 1 , wherein the first and second filter bodies are one of identical and different.

6. The air filter element according to claim 1 , wherein
the first end plate closes the first filter body in an airtight manner on a first axial side,
the intermediate plate closes the first filter body on a second axial side and the second filter body on a first axial side in an airtight manner,
the second end plate closes the second filter body in an airtight manner on a second axial side.

7. The air filter element according to claim 1 , wherein the closure plate extends substantially parallel to an axial direction at least in a region of the first filter body.

8. The air filter element according to claim 1 , wherein the closure plate extends axially over at least one of the first and second filter bodies.

9. The air filter element according to claim 1 , wherein the second filter body is U-shaped having an open side sealed with a closure plate.

10. The air filter element according to claim 1 , wherein the second filter body encloses a second interior in a circumferential direction.

11. The air filter element according to claim 1 , wherein the first and second filter bodies are different in at least one of geometrically and in terms of their filtration effect.

12. The air filter element according to claim 1 , wherein the end plates and the intermediate plate run parallel to each other.

13. An air filter, comprising:
a filter housing defining an air inlet and an air outlet and enclosing a receiving space,
a filter element configured to be inserted into the receiving space and separate an untreated side, the untreated side being fluidly-connected to the air inlet from a clean side which is fluidly-connected to the air outlet;
wherein the filter element includes a first end plate and a second end plate spaced apart from each other in an axial direction, a first filter body and a second filter body arranged between the first and second end plates, and an intermediate plate arranged axially between the first and second filter bodies;
wherein the first and second end plates are closed and the intermediate plate defines at least one intermediate opening extending through a first interior bounded by the first filter body to a second interior bounded by the second filter body;
wherein the first filter body is U-shaped having an open side sealed with a closure plate, the closure plate defining a connection opening creating a fluid connection to the inside of the filter element; and
wherein the second filter body is U-shaped having an open side sealed with a closure plate.

14. The air filter of claim 13 , further comprising:
a first end plate and a second end plate spaced apart from each other in an axial direction and configured to bound the filter element in the axial direction,
a first filter body is arranged axially between the first and second end plates,
a second filter body arranged axially between the first and second end plates, and
an intermediate plate arranged axially between the first and second filter bodies,
wherein the intermediate plate has an intermediate plate area greater than at least one of a first end plate area of the first end plate and a second end plate area of the second end plate.

15. An air filter element for an air filter, comprising:
a first filter body comprising a filter material,
a first end plate and a second end plate spaced apart from each other in an axial direction and configured to bound the filter element in the axial direction, wherein the first filter body is arranged axially between the first and second end plates,
a second filter body arranged axially between the first and second end plates, and
an intermediate plate arranged axially between the first and second filter bodies, wherein the intermediate plate has an intermediate plate area, and the first end plate has a first end plate area;
wherein the first and second end plates are closed and the intermediate plate defines at least one intermediate opening extending through a first interior bounded by the first filter body to a second interior bounded by the second filter body;
wherein the first filter body and the second filter body are arranged offset with respect to one another; wherein the first filter body is U-shaped having an open side sealed with a closure plate, the closure plate defining a connection opening creating a fluid connection to the inside of the filter element.

16. The air filter element of claim 15 , wherein the intermediate plate area is greater than the first end plate area.

17. The air filter element of claim 15 , wherein the first end plate area is greater than a second end plate area of the second end plate.

18. The air filter element of claim 15 , further comprising:
a filter housing defining an air inlet and an air outlet and enclosing a receiving space, wherein the filter element is configured to be inserted into the receiving space and separate an untreated side, the untreated side being fluidly-connected to the air inlet from a clean side which is fluid-connected to the air outlet.

19. The air filter element according to claim 1 , wherein the first filter body and the second filter body are arranged offset with respect to one another.

Assignees

• Enderich Andreas
• Jerger Alexander
• Traub Matthias
• Von Merkatz Hendrik
• Waibel Hans
• Mahle Int Gmbh

Inventors

• Enderich Andreas
• Jerger Alexander
• Traub Matthias
• Von Merkatz Hendrik
• Waibel Hans

Classifications

• B01D46/0021

  Operations & Transport · mapped topic

• B01D46/103 Primary

  Curved filtering elements · CPC title

• B01D2275/206

  Special forms, e.g. adapted to a certain housing · CPC title

• B01D46/521

  using folded, pleated material · CPC title

• B01D46/002 Primary

  Operations & Transport · mapped topic