Filter elements, air cleaner assemblies, and methods of use and assembly

1. A filter cartridge comprising:

(a) filtration media; and

(b) a housing seal arrangement coupled to the filtration media, comprising:

(i) a seal support having a surface;

(ii) a seal member supported by the seal support and having a radially directed seal surface and a thickness between the seal support surface and the seal member radially directed seal surface that varies along the seal member radially directed seal surface; and

(iii) the seal member radially directed seal surface comprises a plurality of outwardly projecting and axially extending portions and a plurality of inwardly projecting and axially extending portions.

2. A filter cartridge according to claim 1 wherein:

(a) the seal member radially directed seal surface comprises an inwardly directed radial seal surface.

3. A filter cartridge according to claim 1 wherein:

(a) the seal member radially directed seal surface comprises an outwardly directed radial seal surface.

4. A filter cartridge according to any of claim 1 wherein:

(a) the thickness between the seal support surface and the seal member radially directed seal surface varies along the seal member radially directed seal surface about a central axis of the filter cartridge.

5. A filter cartridge according to claim 1 wherein:

(a) the thickness between the seal support surface and the seal member radially directed seal surface is generally constant in an axial direction.

6. A filter cartridge according to claim 1 wherein:

(a) the seal member thickness varies by a minimum thickness and a maximum thickness, wherein the maximum thickness is at least 1.1 times the minimum thickness.

7. A filter cartridge according to claim 1 wherein:

(a) the plurality of outwardly projecting and axially extending portions and the plurality of inwardly projecting and axially extending portions are formed in the radially directed seal surface when the filter cartridge is introduced into a housing and forms a seal with a housing seal surface.

8. A filter cartridge according to claim 1 wherein:

(a) the plurality of outwardly projecting and axially extending portions alternating with the plurality of inwardly projecting and axially extending portions, and the radially directed seal surface comprises an outwardly directed radial seal surface where the thickness of the seal member between the seal support surface and the radially directed seal surface at the plurality of outwardly projecting and axially extending portions is greater than the thickness of the seal member between the seal support surface and the radially directed seal surface at the plurality of inwardly projecting and axially extending portions.

9. A filter cartridge according to claim 1 wherein:

(a) the plurality of outwardly projecting and axially extending portions alternating with the plurality of inwardly projecting and axially extending portions, and the radially directed seal surface comprises an inwardly directed radial seal surface where the thickness of the seal member between the seal support surface and the surface and the radially directed seal surface at the plurality of outwardly projecting and axially extending portions is less than the thickness of the seal member between the seal support surface and the radially directed seal surface at the plurality of inwardly projecting and axially extending portions.

10. A filter cartridge according to claim 1 wherein:

(a) the plurality of outwardly projecting and axially extending portions and the plurality of inwardly projecting and axially extending portions comprise curved portions.

11. A filter cartridge according to claim 1 wherein:

(a) the radially directed seal surface comprises at least two of the radially outwardly projecting and axially extending portions alternating with at least two of the radially inwardly projecting and axially extending portions per inch along the seal support extending around a central axis of the filter cartridge.

12. A filter cartridge according to claim 11 wherein:

(a) the radially directed seal surface comprises less than about 13 of the radially outwardly projecting and axially extending portions alternating with less than about 13 of the radially inwardly projecting and axially extending portions along a distance of one inch along the seal support extending around a central axis of the filter cartridge.

13. A filter cartridge according to claim 1 wherein:

(a) the radially directed seal surface comprises greater than 20, inclusive, of the radially outwardly projecting and axially extending portions alternating with greater than 20, inclusive, of the radially inwardly projecting and axially extending portions.

14. A filter cartridge according to claim 1 wherein:

(a) the radially directed seal surface comprises 20-400, inclusive, of the radially outwardly projecting and axially extending portions alternating with 20-400, inclusive, of the radially inwardly projecting and axially extending portions.

15. A filter cartridge according to claim 1 wherein:

(a) the housing seal arrangement forms a fluid port where fluid flows into or out of the filtration media, and the thickness of the seal member between the seal support surface and the seal member radially directed seal surface varies around the fluid port.

16. A filter cartridge according to claim 1 wherein:

(a) the filtration media has first and second ends; and, surrounds and defines a central open volume; and

(b) the filtration media comprises pleated media arranged around the central open volume or non-pleated media arranged around the central open volume.

17. A filter cartridge according to claim 1 wherein:

(a) the filtration media comprises a fluted sheet of media attached to a second sheet of media, and wound or stacked.

18. A filter cartridge according to claim 1 wherein:

(a) the filtration media comprises filter media defining first and second, opposite, flow faces, having flutes extending from the first flow face to the second flow face, and wherein flow from the first flow face to the second flow face is closed except by flow through the filtration media.

19. A filter cartridge according to claim 1 wherein:

(a) the filtration media has first and second ends;

(b) a first, open, end piece is positioned at the first end of the media; and,

(c) the housing seal arrangement is positioned on the first end piece.

20. A filter cartridge according to claim 1 wherein:

(a) the seal support comprises a support structure extending around a filtration media axis, the seal support also supporting the filtration media.

21. A filter cartridge according to claim 1 wherein:

(a) the seal support comprises a preform.

22. A filter cartridge according to claim 19 wherein:

(a) the radially directed seal surface is recessed from the first and second ends of the filtration media.

23. A filter assembly comprising:

(a) a housing having a gas flow inlet and a gas flow outlet and comprising a body section having an access cover;

(b) a wavy wall housing seal structure comprising a first wavy wall housing seal surface having outwardly projecting and inwardly projecting sections that extend axially; and

(c) a filter cartridge comprising:

(i) filtration media; and

(ii) a housing seal arrangement coupled to the filtration media, comprising:

(A) a seal support having a surface; and

(B) a seal member supported by the seal support and having a radially directed seal surface and a thickness between the seal support surface and the radially directed seal surface that varies along the seal member surface, wherein the filter cartridge is operably, removably positioned within the housing and the seal member is sealed to the wavy wall housing seal surface.

24. A filter assembly according to claim 23 wherein:

(a) the wavy wall housing structure comprises a second wavy wall housing seal surface having outwardly projecting and inwardly projecting sections that extend axially; and wherein the first wavy wall housing seal surface and the second wavy wall housing seal surface are on opposite sides of the wavy wall housing seal structure.