Air 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 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 flow ends, with media extending therebetween;
(b) a pinch seal arrangement having: an outer peripheral surface; and, first and second, opposite, pinch seal housing engagement surfaces;
(i) the outer peripheral surface having a first member of a projection/recess contour therein comprising a first recess member in the outer peripheral surface; and,
(c) the second one of the first and second, opposite, pinch seal housing engagement surfaces being a contoured seal surface with at least one housing engagement projection/recess member therein;
(i) the housing engagement projection/recess member comprising a projection arrangement positioned, in a portion of the pinch seal arrangement, in axial alignment with the first member of the projection/recess contour in the outer peripheral surface.
2. A filter cartridge according to claim 1 wherein:
(a) the first one of the first and second, opposite, pinch seal housing engagement surfaces has a peripherally continuous pressure flange engagement section that is not contoured as a mirror image of the contoured housing engagement surface of the second pinch seal housing engagement surface.
3. A filter cartridge according to claim 1 wherein:
(a) the first member of a projection/recess contour in the outer peripheral surface comprises multiple, spaced, recesses in the outer peripheral surface.
4. A filter cartridge according to claim 3 wherein:
(a) the first member of a projection/recess contour in the outer peripheral surface comprises two recess members each having a straight surface section extending over a distance of at least 5 mm.
5. A filter cartridge according to claim 1 wherein:
(a) the first member of a projection/recess contour in the outer peripheral surface has a maximum contour relief of at least 1 mm and not more than 10 mm.
6. A filter cartridge according to claim 1 wherein:
(a) the projection arrangement of the housing engagement projection/recess member in the second pinch seal housing engagement surface extends over no more than 50% of a total perimeter extension of the second pinch seal engagement surface.
7. A filter cartridge according to claim 1 wherein:
(a) the projection arrangement of the housing engagement projection/recess member on the second pinch seal housing engagement surface comprises at least one projection having a flat section extending over a distance of at least 40 mm.
8. A filter cartridge according to claim 1 wherein:
(a) the media pack comprises fluted media secured to facing media.
9. A filter cartridge according claim 8 wherein:
(a) the media pack comprises a coiled arrangement of fluted media secured to facing media.
10. A filter cartridge according to claim 1 wherein:
(a) the media pack has an outer periphery with at least one straight section extending over a distance of at least 40 mm.
11. A filter cartridge according to claim 10 wherein:
(a) the outer peripheral surface of the pinch seal arrangement includes the first member of a projection/recess contour positioned in overlap with a straight section of the media pack.
12. A filter cartridge according to claim 1 wherein:
(a) the media pack comprises a first pleated media coil surrounding a second pleated media coil.
13. A filter cartridge according to claim 1 including:
(a) a handle arrangement projecting in a direction away from the pinch seal member and the second flow end.
14. A filter cartridge according to claim 1 including:
(a) a preformed shell surrounding the media pack.
15. A filter cartridge according to claim 14 wherein:
(a) the preformed shell includes a grid, in at least partial extension across the second flow end.
16. A filter cartridge according to claim 1 wherein:
(a) the pinch seal arrangement comprises a portion molded directly to the media of the filter media pack.
17. A filter cartridge according to claim 1 wherein:
(a) the second one of the first and second, opposite, pinch seal housing engagement surfaces comprise at least two projections, each of which projects, axially, at least 3 mm from an adjacent portion of the second pinch seal housing engagement surface.
18. A filter cartridge according to claim 1 wherein:
(a) the outer peripheral surface of the pinch seal arrangement is peripherally radially symmetric around a central axis.
19. A filter cartridge according to claim 1 wherein:
(a) the first housing engagement projection/recess member comprises at least a first portion with a first contour projection of maximum extension;
(i) the first portion having a flow direction cross dimensional area of A 1 ; and,
(b) the housing seal arrangement as a non-contoured second portion;
(i) the second portion having a flow direction cross-dimensional area of A 2 ;
(ii) wherein A 1 =0.92-1.08 A 2 .
20. An air cleaner assembly including a filter cartridge in accord with claim 1 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;
(A) the pressure flange being positioned on a portion of the access cover section that projects at least 50 mm into the base section, when the filter cartridge is sealed in position; and,
(B) the seal compression surface on the base section including a plurality of peripherally spaced recesses therein; and,
(b) the filter cartridge according to claim 1 positioned within the housing with the pinch seal housing engagement surface biased against the seal compression surface, on the base section, by the pressure flange on the access cover.