Filter media

Patent metadata

Field	Value
Publication number	US-9752541-B2
Application number	US-201414561530-A
Country	US
Kind code	B2
Filing date	Dec 5, 2014
Priority date	Dec 5, 2014
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

A filter media includes flutes, forward plugs, and aft plugs. Each of the flutes has a forward flute face, an aft flute face, and a flute body defining a flute conduit to convey the fluid. The forward plugs are disposed in alternating ones of the flutes. Each forward plug includes a plug base and an aerodynamic plug nose. The aerodynamic plug nose has a center axis and a nose surface tapering outwardly from the center axis towards the plug base. The plug nose is configured to aerodynamically redirect a flow of the fluid away from the center axis. The flutes that have forward plugs include a flute outlet disposed at the aft flute face. The aft plugs are disposed in the flutes adjacent to the flutes that have corresponding forward plugs. The flutes that have aft plugs include a flute inlet disposed at the forward flute face.

First claim

We claim:

1. A filter media to filter a fluid passing therethrough, comprising:
a plurality of parallel flutes, each flute having:
a forward flute face;
an aft flute face; and
a flute body positioned between the forward flute face and the aft flute face, the flute body defining a flute conduit to convey the fluid therethrough, the flute conduit having a flute wall defined by a filter substrate, wherein the fluid is filtered by passing through the filter substrate;

the plurality of parallel flutes comprising a set of upstream flutes and a set of downstream flutes alternatively disposed, wherein each downstream flute of the set of downstream flutes is placed adjacent to an upstream flute of the set of upstream flutes, wherein each downstream flute of the set of downstream flutes comprises a forward plug including:
a plug base configured to mate with a corresponding forward flute face; and
an aerodynamic plug nose having a center axis and a nose surface tapering outwardly from the center axis towards the plug base, the plug nose being configured to aerodynamically redirect a flow of the fluid away from the center axis into the upstream flute placed adjacent to each downstream flute, wherein each downstream flute includes a flute outlet disposed at the aft flute face of each downstream flute, and

wherein each upstream flute of the set of upstream flutes comprises an aft plug disposed on the aft flute face of each upstream flute, wherein each upstream flute includes a flute inlet disposed at the forward flute face,
wherein at least one of the forward plug or the aft plug is formed of a material different than the filter substrate.

2. The filter media according to claim 1 , wherein the nose surface is a pyramidal surface.

3. The filter media according to claim 1 , wherein the nose surface is an ogee surface rotated about the center axis.

4. The filter media according to claim 1 , wherein the flute body is triangular in cross section.

5. The filter media according to claim 1 , wherein the flute body is square in cross section.

6. The filter media according to claim 1 , wherein the filter substrate is a felted fiberboard.

7. A filter element to filter a fluid passing therethrough, comprising:
a filter element body having an element inlet and an element outlet; and
a filter media disposed within the filter element body, the filter media including:
a plurality of parallel flutes, each flute having:
a forward flute face;
an aft flute face; and
a flute body positioned between the forward flute face and the aft flute face, the flute body defining a flute conduit to convey the fluid therethrough, the flute conduit having a flute wall defined by a filter substrate, wherein the fluid is filtered by passing through the filter substrate,

the plurality of parallel flutes comprising a set of upstream flutes and a set of downstream flutes alternatively disposed, wherein each downstream flute of the set of downstream flutes is placed adjacent to an upstream flute of the set of upstream flutes, wherein each downstream flute of the set of downstream flutes comprises a forward plug including:
a plug base configured to mate with a corresponding forward flute face; and
an aerodynamic plug nose having a center axis and a nose surface tapering outwardly from the center axis towards the plug base, the plug nose being configured to aerodynamically redirect a flow of the fluid away from the center axis into the upstream flute placed adjacent to each downstream flute, wherein each downstream flute includes a flute outlet disposed at the aft flute face of each downstream flute, and

wherein each upstream flute of the set of upstream flutes comprises an aft plug disposed on the aft flute face of each upstream flute, wherein each upstream flute includes a flute inlet disposed at the forward flute face,
wherein at least one of the forward plug or the aft plug is formed of a material different than the filter substrate.

8. The filter element according to claim 7 , wherein the nose surface is a pyramidal surface.

9. The filter element according to claim 7 , wherein the nose surface is an ogee surface rotated about the center axis.

10. The filter element according to claim 7 , wherein the flute body is triangular in cross section.

11. The filter element according to claim 7 , further comprising a forward element seal to seal the filter element in a filter housing.

12. The filter element according to claim 11 , further comprising an aft element seal to seal the filter element in the filter housing.

13. The filter element according to claim 7 , wherein the filter substrate is a felted fiberboard.

14. A filter assembly to filter a fluid passing therethrough, comprising:
a filter housing including:
a housing inlet;
a housing outlet; and
a housing body having an internal volume; and

a filter element disposed within the filter housing, the filter element including:
a filter element body having an element inlet and an element outlet; and
a filter media disposed within the filter element body, the filter media including:
a plurality of parallel flutes, each flute having:
a forward flute face;
an aft flute face; and
a flute body positioned between the forward flute face and the aft flute face, the flute body defining a flute conduit to convey the fluid therethrough, the flute conduit having a flute wall defined by a filter substrate, wherein the fluid is filtered by passing through the filter substrate,

the plurality of parallel flutes comprising a set of upstream flutes and a set of downstream flutes alternatively disposed, wherein each downstream flute of the set of downstream flutes is placed adjacent to an upstream flute of the set of upstream flutes, wherein each downstream flute of the set of downstream flutes comprises a forward plug including:
a plug base configured to mate with a corresponding forward flute face; and
an aerodynamic plug nose having a center axis and a nose surface tapering outwardly from the center axis towards the plug base, the plug nose being configured to aerodynamically redirect a flow of the fluid away from the center axis into the upstream flute placed adjacent to each downstream flute, wherein each downstream flute includes a flute outlet disposed at the aft flute face of each downstream flute, and

wherein each upstream flute of the set of upstream flutes comprises an aft plug disposed on the aft flute face of each upstream flute, wherein each upstream flute includes a flute inlet disposed at the forward flute face,
wherein at least one of the forward plug or the aft plug is formed of a material different than the filter substrate.

15. The filter assembly according to claim 14 , wherein the nose surface is a pyramidal surface.

16. The filter assembly according to claim 14 , wherein the nose surface is an ogee surface rotated about the center axis.

17. The filter assembly according to claim 14 , wherein the flute body is triangular in cross section.

18. The filter assembly according to claim 14 , further comprising a forward element seal to seal the filter element in the filter housing.

19. The filter assembly according to claim 18 , further comprising an aft element seal to seal the filter element in the filter housing.

20. The filter assembly according to claim 14 , wherein the filter substrate is a felted fiberboard.

Assignees

• Caterpillar Inc

Inventors

• Martin Kevin
• Jura Jason
• Morris Bryant

Classifications

• F02M35/02416

  Fixing, mounting, supporting or arranging filter elements; Filter element cartridges · CPC title

• B01D46/0041 Primary

  for feeding · CPC title

• F02M35/0245 Primary

  Pleated, folded, corrugated filter elements, e.g. made of paper · CPC title

• B01D46/525

  which comprises flutes · CPC title