Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
According to the present disclosure, features, components and techniques useable for providing air cleaner arrangements are provided. Many of the features relate to an axial seal arrangement provided on a filter cartridge. A typical filter cartridge, for use with these features, is a filter cartridge having opposite flow ends. Example media arrangements that fit this characterization are described. Seal arrangements provided with an axial housing sealing engagement surface are shown. A seal arrangement is provided with variations therein, to advantage. These variations can be in either or both of an outer peripheral edge surface and a housing seal engagement surface. Also, air cleaner assemblies having advantageous features therein are provided. Further, air cleaner housings are described, with selected, preferred features for engagement with filter cartridges.
1. A filter cartridge comprising:
(a) a filter media pack comprising first and second, opposite, flow ends, with media extending therebetween, wherein the first end comprises a dirty air inlet and the second end comprises a clean air outlet; and
(b) an axial housing seal arrangement having a first axially facing surface, wherein the first axially facing surface generally faces in a direction toward the filter media pack clean air outlet;
(i) the first axially facing surface being configured to form an axial seal with an air cleaner housing, in use;
(ii) wherein the first axially facing surface comprises a first flat surface, a second flat surface, and a first transition surface, wherein the second flat surface is spaced from and parallel to the first flat surface, and the first transition region extends from the first flat surface to the second flat surface; and
(iii) wherein the second flat surface is located closer to the filter media pack clean air outlet than the first flat surface.
2. A filter cartridge according to claim 1 , wherein:
(a) the first axially facing surface comprises a second transition surface, and the second transition surface extends from the first flat surface to the second flat surface.
3. A filter cartridge according to claim 2 , wherein:
(a) the first transition surface and the second transition surface each include a straight section.
4. A filter cartridge according to claim 3 , wherein:
(a) the straight section of each of the first transition surface and the second transition surface are non-parallel to the first flat surface.
5. A filter cartridge according to claim 1 , wherein:
(a) the first axially facing surface is spaced from an exterior of the filter media pack to provide an opening between the first axially facing surface and the exterior of the filter media pack sufficient for receiving a projection on the air cleaner housing, in use, therebetween.
6. A filter cartridge according to claim 3 , wherein:
(a) the straight section of each of the first transition surface and the second transition surface extends at an angle of 15 to 75 degrees relative to a plane perpendicular to a direction between the first and second flow ends.
7. A filter cartridge according to claim 3 , wherein:
(a) the straight section of each of the first transition surface and the second transition surface extends at an angle of 30 to 60 degrees relative to a plane perpendicular to a direction between the first and second flow ends.
8. A filter cartridge according to claim 1 , wherein:
(a) the first transition surface engages a portion of the first flat surface and the second flat surface at a region having a radius of at least 2 mm.
9. A filter cartridge according to claim 1 , wherein:
(a) the first flat surface forms a first plane and the second flat surface forms a second plane, and the first plane and the second plane are separated by at least 2 mm.
10. A filter cartridge according to claim 1 , wherein:
(a) the first flat surface forms a first plane and the second flat surface forms a second plane, and the first plane and the second plane are separated by at least 5 mm.
11. A filter cartridge according to claim 1 , wherein:
(a) the first flat surface forms a first plane and the second flat surface forms a second plane, and the first plane and the second plane are separated by at least 10 mm.
12. A filter cartridge according to claim 1 , wherein:
(a) the second flat surface extends at least 5 mm.
13. A filter cartridge according to claim 1 , wherein:
(a) the second flat surface extends within a range of 10-80 mm.
14. A filter cartridge according to claim 1 , wherein:
(a) the axial housing seal arrangement comprises a seal member and a pressure flange supporting the seal member, wherein the seal member includes the first axially facing surface.
15. A filter cartridge according to claim 14 , wherein:
(a) the seal member is molded in place.
16. A filter cartridge according to claim 15 , wherein:
(a) the seal member is adhered to the pressure flange.
17. A filter cartridge according to claim 14 , wherein:
(a) the seal member comprises a second axially facing surface opposite the first axially facing surface, the second axial facing surface facing in a direction away from the filter media pack clean air outlet and having a second contoured surface comprising a first recess in axial alignment with at least one first step.
18. A filter cartridge according to claim 1 , wherein:
(a) the first axial facing surface comprises a first step comprising the second flat surface, and a second step comprising a third flat surface.
19. A filter cartridge according to claim 18 , wherein:
(a) the second axial facing surface comprises a first recess in axial alignment with the first step, and a second recess in axial alignment with the second step.
20. A filter cartridge according to claim 1 , wherein:
(a) the first axial facing surface has at least one first step that extends over no more than 50% of a total perimeter extension of the first axial facing surface.
21. A filter cartridge according to claim 1 , wherein:
(a) the media pack comprises fluted media secured to facing media.
22. A filter cartridge according claim 1 , wherein:
(a) the media pack comprises a coiled arrangement of fluted media secured to facing media.
23. A filter cartridge according to claim 1 , wherein:
(a) the media pack comprises a first pleated media coil surrounding a second pleated media coil.
24. A filter cartridge according to claim 1 , including:
(a) a handle arrangement projecting in a direction away from the axial housing seal arrangement and the second flow end.
25. A filter cartridge according to claim 1 , including:
(a) a preformed shell surrounding the media pack.
26. A filter cartridge according to claim 25 , wherein:
(a) the preformed shell includes a grid, in at least partial extension across the second flow end.
27. An air cleaner assembly including a filter cartridge in accordance with claim 26 therein; the assembly comprising:
(a) a housing having a first housing section and a second housing section;
(i) the first housing section comprising an access cover section having a pressure flange thereon;
(ii) the second housing section comprising a base section having a seal compression surface thereon;
(b) a filter cartridge positioned within the housing.