Filter cartridge arrangements and assemblies; preferred features; methods of assembly and use
The present disclosure relates to filter assemblies. The features described and characterized are typically applied in gas (for example, air) cleaner assemblies. A typical use is in air cleaner assemblies for vehicles or other equipment. The techniques described relate, at least in part, to provision of assemblies with preferred configurations for convenient servicing and operation, while ensuring a proper cartridge is appropriately positioned, oriented and secured for use. Many of the techniques relate to arrangements in which features at opposite ends of a housing and/or cartridge are eccentrically positioned as described.
1. An air filter cartridge comprising:
(a) a filter media surrounding an open filter interior;
(i) the filter media having first and second ends;
(b) a first end piece positioned at the first end of the filter media;
(i) the first end piece having a flow aperture therethrough;
(c) a housing seal arrangement comprising a releasable seal positioned on the first end piece including a non-circular radially directed seal member;
(d) a second end piece positioned at the second end of the filter media;
(i) the second end piece is closed, and has no aperture therethrough, in direct flow communication with the open filter interior;
(ii) the second end piece includes a receiver projection extending into the open filter interior a distance, from the filter media second end toward the filter media first end, corresponding to at least 15% of a distance from the filter media second end to the filter media first end;
(A) the receiver projection defining a receiver recess at an opposite side thereof, from the open filter interior;
(e) the filter media first end defining a first media outer perimeter at a location adjacent the first end piece; and,
(f) the filter media second end defining a second media outer perimeter at a location adjacent the second end piece;
(i) the first and second media outer perimeters being eccentrically aligned with respect to one another.
2. An air filter cartridge according to claim 1 wherein:
(a) the non-circular radially directed seal member comprises a radially outwardly directed seal member.
3. An air filter cartridge according to claim 2 wherein:
(a) the radially directed housing seal member comprises an integral portion of a molded-in-place portion of the first end piece.
4. An air filter cartridge according to claim 2 wherein:
(a) the radially outwardly directed housing seal member defines a seal surface having at least three projection sections with recesses therebetween, in a direction around, and relative to, a central axis surrounded by the seal surface.
5. An air filter cartridge according to claim 4 including:
(a) a seal support member embedded with the housing seal member.
6. An air filter cartridge according to claim 4 wherein:
(a) a liner support including a first end member in axial overlap with the media first end;
(i) the liner support including a non-circular seal support therein and embedded with the housing seal member.
7. A filter cartridge according to claim 1 wherein:
(a) the receiver projection of the second end piece has a portion with a non-circular cross-sectional shape in a plane perpendicular to a direction of extension of the media.
8. A filter cartridge according to claim 7 wherein:
(a) the receiver projection has a shape with:
(i) a cap portion remote from the second end of the media; and,
(ii) a base portion extending between the cap portion and a location adjacent the second end of the media; the base portion having a central section with a non-circular cross-sectional shape.
9. A filter cartridge according to claim 8 wherein:
(a) the second end piece includes a resistive housing engagement member.
10. A filter cartridge according to claim 9 wherein:
(a) the resistive housing engagement member, on the second end piece, is a compressive, resistive, housing engagement member.
11. A filter cartridge according to claim 10 wherein:
(a) the resistive housing engagement member, on the second end piece, defines a non-circular engagement pattern.
12. A filter cartridge according to claim 1 wherein:
(a) the second end piece includes an outer surface portion having a central axial projection thereon projecting in a direction away from the open filter interior and the first end piece.
13. A filter cartridge according to claim 12 wherein:
(a) the central axial projection surrounds a central receiver space.
14. A filter cartridge according to claim 13 wherein:
(a) the central axial projection has a non-circular surface in extension around a receiver space.
15. A filter cartridge according to claim 14 wherein:
(a) the central axial projection has a shape, in extension around a receiver space, having an outer surface comprising a plurality of radially outwardly projecting lobes separated by recesses.
16. An air cleaner assembly comprising:
(a) a housing having: at least one access cover; an air flow inlet; and, an air flow outlet;
(i) the housing includes a guide projection thereon; and,
(b) a filter cartridge operably positioned within the housing and releasably sealed thereto, wherein the air filter cartridge comprises:
(i) a filter media surrounding an open filter interior;
(A) the filter media having first and second ends;
(ii) a first end piece positioned at the first end of the filter media;
(A) the first end piece having a flow aperture therethrough;
(iii) a housing seal arrangement comprising a releasable seal positioned on the first end piece including a non-circular radially directed seal member;
(iv) a second end piece positioned at the second end of the filter media;
(v) the filter media first end defining a first media outer perimeter at a location adjacent the first end piece;
(vi) the filter media second end defining a second media outer perimeter at a location adjacent the second end piece;
(A) the first and second media outer perimeters being eccentrically aligned with respect to one another; and,
(vii) the second end piece of the filter cartridge includes a receiver projection defining a receiver recess extending into the open filter interior a distance, from the media second end toward the media first end, corresponding to at least 10% of a distance from the media second end to the media first end;
(A) the housing guide projection extending into the receiver recess.
17. An air cleaner assembly comprising:
(a) a housing having: at least one access cover; an air flow inlet; and, an air flow outlet; and,
(b) a filter cartridge operably positioned within the housing and releasably sealed thereto, wherein the air filter cartridge comprises:
(i) a filter media surrounding an open filter interior;
(A) the filter media having first and second ends;
(ii) a first end piece positioned at the first end of the filter media;
(A) the first end piece having a flow aperture therethrough;
(iii) a housing seal arrangement comprising a releasable seal positioned on the first end piece including a non-circular radially directed seal member;
(iv) a second end piece positioned at the second end of the filter media;
(v) the filter media first end defining a first media outer perimeter at a location adjacent the first end piece;
(vi) the filter media second end defining a second media outer perimeter at a location adjacent the second end piece;
(A) the first and second media outer perimeters being eccentrically aligned with respect to one another;
(vii) the second end piece has a radially inwardly directed, resistive, second housing engagement member thereon; and,
(viii) the housing has a guide projection thereon;
(A) the inwardly directed, resistive, housing engagement member resistively engaging the guide projection.
18. An air filter cartridge comprising:
(a) a filter media surrounding an open filter interior;
(i) the filter media having first and second ends;
(b) a first end piece positioned at the first end of the filter media;
(i) the first end piece having a flow aperture therethrough;
(c) a housing seal arrangement comprising a releasable seal positioned on the first end piece including a non-circular radially directed seal member;
(d) a second end piece positioned at the second end of the filter media;
(i) the second end piece is closed, and has no aperture therethrough, in direct flow communication with the open filter interior;
(ii) the second end piece includes an outer surface portion having a central axial projection thereon projecting in a direction away from the open filter interior and the first end piece;
(e) the filter media first end defining a first media outer perimeter at a location adjacent the first end piece; and,
(f) the filter media second end defining a second media outer perimeter at a location adjacent the second end piece;
(i) the first and second media outer perimeters being eccentrically aligned with respect to one another.
19. An air filter cartridge according to claim 18 wherein:
(a) the non-circular radially directed seal member comprises a radially outwardly directed seal member.
20. An air filter cartridge according to claim 19 wherein:
(a) the radially directed housing seal member comprises an integral portion of a molded-in-place portion of the first end piece.
21. An air filter cartridge according to claim 19 wherein:
(a) the radially outwardly directed housing seal member defines a seal surface having at least three projection sections with recesses therebetween, in a direction around, and relative to, a central axis surrounded by the seal surface.
22. An air filter cartridge according to claim 21 including:
(a) a seal support member embedded with the housing seal member.
23. An air filter cartridge according to claim 21 wherein:
(a) a liner support including a first end member in axial overlap with the media first end;
(i) the liner support including a non-circular seal support therein and embedded with the housing seal member.
24. A filter cartridge according to claim 18 wherein:
(a) the central axial projection surrounds a central receiver space.
25. A filter cartridge according to claim 24 wherein:
(a) the central axial projection has a non-circular surface in extension around a receiver space.
26. A filter cartridge according to claim 25 wherein:
(a) the central axial projection has a shape, in extension around a receiver space, having an outer surface comprising a plurality of radially outwardly projecting lobes separated by recesses.