IP Library › Granted Patent US 7,674,308
Granted Patent B2
US 7,674,308 · App. 10/587,766 · Granted Mar 9, 2010

Filter elements; air cleaner; assembly; and methods

Assignee: Donaldson Company, Inc.
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Quick Facts
Patent No.
US 7,674,308
App. No.
10/587,766
Granted
Mar 9, 2010
Kind
B2
Abstract

A filter cartridge, a safety element and fluid cleaner assembly are described. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The filter cartridge generally comprises z-filter media, arranged in a straight through configuration. Preferred cartridges include a seal gasket positioned to extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided.

Claims (135)

1. An air filter cartridge comprising:

(a) a z-filter media pack comprising fluted media secured to facing media; the media pack having an inlet flow face, an outlet flow face, and an axial length between the inlet flow face and outlet flow face;

(b) an impermeable shell having opposite ends and a sidewall extending therebetween; the shell sidewall circumscribing the media pack; the shell having a seal support;

(i) the media pack being secured within the shell;

(ii) the seal support defining a plurality of seal flow apertures therethrough;

(c) grid work extending over the outlet flow face; and

(d) a seal arrangement secured to the seal support;

(i) the seal arrangement molded to the seal support and extending through the seal flow apertures;

(ii) the grid work and the seal support are at opposite ends of the shell.

2. An air filter cartridge according to claim 1 wherein:

(a) the shell comprises a molded plastic material; and

(b) the seal arrangement comprises foamed polyurethane.

3. An air filter cartridge according to claim 1 wherein:

(a) the shell is secured to the media pack by the seal arrangement.

4. An air filter cartridge according to claim 1 wherein:

(a) the seal arrangement is molded directly to the media pack.

5. An air filter cartridge according to claim 1 wherein:

(a) the grid work is an integral part of the shell.

6. An air filter cartridge according to claim 1 wherein:

(a) the seal arrangement includes no portion extending over the inlet flow face; and the seal arrangement includes no portion extending over the outlet flow face.

7. An air filter cartridge according to claim 1 wherein:

(a) the seal arrangement includes an axial pinch seal.

8. An air filter cartridge according to claim 1 wherein:

(a) the media pack comprises a coiled z-filter media pack and a core is within the media pack.

9. An air filter cartridge according to claim 8 wherein:

(a) the core includes a receiver and a non-hollow central blade.

10. An air filter cartridge according to claim 9 wherein:

(a) the grid work includes a center cross-piece defining the receiver.

11. An air filter cartridge according to claim 1 wherein:

(a) the seal support extends radially outwardly;

(b) the media pack is racetrack shaped; and

(c) the shell is racetrack shaped.

12. An air filter cartridge according to claim 1 wherein:

(a) the seal support is annular with respect to the media pack.

13. An air filter cartridge according to claim 12 wherein:

(a) the plurality of seal flow apertures extend along the annular seal support.

14. An air filter cartridge according to claim 1 wherein:

(a) the shell includes a first end having:

(i) a sidewall portion; and

(ii) a transition portion canted relative to the sidewall portion.

15. An air filter cartridge according to claim 14 wherein:

(a) the shell first end includes the seal support;

(i) the transition portion is between the sidewall portion and the seal support; and

(b) the seal arrangement includes seal material between the transition portion and the media pack.

16. An air filter cartridge comprising:

(a) a z-filter media pack comprising fluted media secured to facing media; the media pack having an inlet flow face, an outlet flow face, and an axial length between the inlet flow face and outlet flow face;

(i) the media pack being racetrack shaped;

(b) an impermeable shell having opposite ends and a sidewall extending therebetween; the shell sidewall circumscribing the media pack; the shell having a seal support;

(i) the media pack being secured within the shell;

(ii) the seal support defining a plurality of seal flow apertures therethrough;

(iii) the seal support extending radially outwardly;

(iv) the shell being racetrack shaped;

(c) grid work extending over the outlet flow face; and

(d) a seal arrangement secured to the seal support;

(i) the seal arrangement molded to the seal support and extending through the seal flow apertures.

17. An air filter cartridge according to claim 16 wherein:

(a) the shell includes a first end having:

(i) a sidewall portion; and

(ii) a transition portion canted relative to the sidewall portion.

18. An air filter cartridge according to claim 17 wherein:

(a) the shell first end includes the seal support;

(i) the transition portion is between the sidewall portion and the seal support; and

(b) the seal arrangement includes seal material between the transition portion and the media pack.

19. An air filter cartridge according to claim 16 wherein:

(a) the seal arrangement includes no portion extending over the inlet flow face; and the seal arrangement includes no portion extending over the outlet flow face.

20. An air filter cartridge according to claim 16 wherein:

(a) the seal arrangement includes an axial pinch seal.

21. An air filter cartridge comprising:

(a) a z-filter media pack comprising fluted media secured to facing media; the media pack having an inlet flow face, an outlet flow face, and an axial length between the inlet flow face and outlet flow face;

(b) an impermeable shell having opposite ends and a sidewall extending therebetween; the shell sidewall circumscribing the media pack; the shell having a seal support;

(i) the media pack being secured within the shell;

(ii) the seal support defining a plurality of seal flow apertures therethrough;

(c) grid work extending over the outlet flow face; and

(d) a seal arrangement secured to the seal support;

(i) the seal arrangement molded to the seal support and extending through the seal flow apertures;

(ii) the shell secured to the media pack by the seal arrangement.

22. An air filter cartridge comprising:

(a) a z-filter media pack comprising fluted media secured to facing media; the media pack having an inlet flow face, an outlet flow face, and an axial length between the inlet flow face and outlet flow face;

(b) an impermeable shell having opposite ends and a sidewall extending therebetween; the shell sidewall circumscribing the media pack; the shell having a seal support;

(i) the media pack being secured within the shell;

(ii) the seal support defining a plurality of seal flow apertures therethrough;

(c) grid work extending over the outlet flow face; and

(d) a seal arrangement secured to the seal support;

(i) the seal arrangement molded to the seal support and extending through the seal flow apertures;

(ii) the seal arrangement molded directly to the media pack.

23. An air filter cartridge comprising:

(a) a z-filter media pack comprising fluted media secured to facing media; the media pack having an inlet flow face, an outlet flow face, and an axial length between the inlet flow face and outlet flow face;

(b) an impermeable shell having opposite ends and a sidewall extending therebetween; the shell sidewall circumscribing the media pack; the shell having a seal support;

(i) the media pack being secured within the shell;

(ii) the seal support defining a plurality of seal flow apertures therethrough;

(c) grid work extending over the outlet flow face; and

(d) a seal arrangement secured to the seal support;

(i) the seal arrangement molded to the seal support and extending through the seal flow apertures;

(ii) the seal arrangement including no portion extending over the inlet flow face; and the seal arrangement including no portion extending over the outlet flow face.

24. An air filter cartridge comprising:

(a) a z-filter media pack comprising fluted media secured to facing media; the media pack having an inlet flow face, an outlet flow face, and an axial length between the inlet flow face and outlet flow face;

(b) an impermeable shell having opposite ends and a sidewall extending therebetween; the shell sidewall circumscribing the media pack; the shell having a seal support;

(i) the media pack being secured within the shell;

(ii) the seal support defining a plurality of seal flow apertures therethrough;

(c) grid work extending over the outlet flow face; and

(d) a seal arrangement secured to the seal support;

(i) the seal arrangement molded to the seal support and extending through the seal flow apertures;

(ii) the seal arrangement including an axial pinch seal.

25. An air filter cartridge comprising:

(a) a z-filter media pack comprising fluted media secured to facing media; the media pack having an inlet flow face, an outlet flow face, and an axial length between the inlet flow face and outlet flow face;

(i) the media pack comprising a coiled z-filter media pack, and a core being within the media pack;

(ii) the core including a receiver and a non-hollow central blade;

(b) an impermeable shell having opposite ends and a sidewall extending therebetween; the shell sidewall circumscribing the media pack; the shell having a seal support;

(i) the media pack being secured within the shell;

(ii) the seal support defining a plurality of seal flow apertures therethrough;

(c) grid work extending over the outlet flow face; and

(d) a seal arrangement secured to the seal support;

(i) the seal arrangement molded to the seal support and extending through the seal flow apertures.

26. An air filter cartridge comprising:

(a) a z-filter media pack comprising fluted media secured to facing media; the media pack having an inlet flow face, an outlet flow face, and an axial length between the inlet flow face and outlet flow face; the media pack defining a longitudinal axis; and

(b) a shell and a seal arrangement; the shell and seal arrangement extending the axial length of the media pack; the shell having a sidewall and a portion that is canted relative to the longitudinal axis of the media pack; the shell sidewall circumscribing the media pack;

(i) the media pack being secured within the shell;

(ii) the seal arrangement being molded to the canted portion.

27. An air filter cartridge according to claim 26 wherein:

(a) the seal arrangement includes a radial seal.

28. An air filter cartridge according to claim 26 further comprising:

(a) grid work extending over the outlet flow face;

(b) the grid work is an integral part of the shell; and

(c) a core within the media pack.

29. An air filter cartridge according to claim 26 wherein:

(a) the shell has a first end having a seal support;

(i) the canted portion is between the sidewall and the seal support; and

(b) the seal arrangement includes seal material between the canted portion and the media pack.

30. An air filter cartridge according to claim 26 wherein:

(a) the shell has a seal support;

(i) the seal support includes a plurality of seal flow apertures therethrough; and

(ii) the seal arrangement extends through the seal flow apertures.

31. An air filter cartridge according to claim 26 wherein:

(a) the seal arrangement is molded directly to the media pack; and

(b) the seal arrangement comprises foamed polyurethane.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 14, 2007
From: KRISKO, WILLIAM J.; BISHOP, WAYNE R.; GIESEKE, STEVEN SCOTT; NELSON, BENNY K.
To: DONALDSON COMPANY, INC.
Reel/Frame 019288/0693 →
Continuity (2)
Provisional Application 6055613300 · Mar 24, 2004
Related Publication 20080016832A1 · Jan 24, 2008