Formed filter media

Patent metadata

Field	Value
Publication number	US-12569797-B2
Application number	US-201917783472-A
Country	US
Kind code	B2
Filing date	Dec 9, 2019
Priority date	Dec 9, 2019
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

Embodiments described herein relate generally to filter assemblies that include filter elements with cross-channel flow having flat and/or folded arrangements for optimized functionality and performance. The filter assemblies may be formed (e.g., shaped, constructed, etc.) using a variety of shapes, angles, configurations, and materials to improve the filtration and cross-channel flow of fluid through the filter media. The filter media may implement a wide variety of patterns (e.g., repeating, origami, rounded, etc.), shapes (e.g., tetrahedral, rhombus, square), and construction (e.g., pleated, integrated, interdigitated, etc.).

First claim

What is claimed is:

1 . A filter assembly, comprising:
a filter element, comprising:
a filter media comprising a plurality of filter media layers stacked on top of each other along a transverse direction to form the filter media, the filter media having an inlet surface at an inlet portion of the filter media, and an outlet surface at an outlet portion of the filter media, the outlet portion disposed axially away from the inlet portion in an axial direction, the axial direction substantially perpendicular to the inlet surface and the outlet surface, the transverse direction substantially perpendicular to the axial direction,
each filter media layer in the plurality of filter media layers is folded along a plurality of bend lines between the inlet portion and the outlet portion, and each filter media layer in the plurality of filter media layers comprises a plurality of wall segments extending in serpentine manner between the plurality of bend lines, the plurality of wall segments extending axially and defining axial channels therebetween;
a seal member disposed around:
the inlet portion of the filter media, adjacent the inlet surface, or
the outlet portion of the filter media, adjacent the outlet surface; and
a support rib extending in the axial direction from the inlet portion toward the outlet portion, the support rib configured to maintain the filter element structure.

2 . The filter assembly of claim 1 , wherein the seal member comprises a plurality of seal ribs extending in the transverse direction, the plurality of seal ribs extending over the outlet surface, the plurality of seal ribs configured to impede movement of the axial channels along the outlet surface.

3 . The filter assembly of claim 1 , further comprising a liner element extending from the seal member axially toward the outlet surface, the liner element configured to constrain movement of the axial channels.

4 . The filter assembly of claim 3 , wherein the liner element defines a first sidewall portion, a second sidewall portion disposed away from the first sidewall portion in a lateral direction, a first wall portion extending from the first sidewall portion in the lateral direction toward the second sidewall portion, a second wall portion disposed away from the first wall portion in the transverse direction and extending from the first sidewall portion in the lateral direction toward the second sidewall portion, the lateral direction being substantially perpendicular to the axial direction and the transverse direction being substantially perpendicular to the axial direction and the lateral direction.

5 . The filter assembly of claim 4 , wherein the support rib is a first support rib disposed along the first sidewall portion, further comprising a second support rib disposed along the first wall portion, the second support rib extending in the axial direction from the inlet portion toward the outlet portion, and the second support rib configured to maintain the filter element structure.

6 . The filter assembly of claim 1 , wherein the plurality of filter media layers stacked on top of each other to form the filter media comprises a second plurality of filter media layers stacked upon a first plurality of filter media layers, wherein the support rib is disposed between the first plurality of filter media layers and the second plurality of filter media layers, the support rib extending in the axial direction from the inlet portion toward the outlet portion, the support rib configured to maintain the filter element structure and constrain movement of pockets in the plurality of filter media layers.

7 . The filter assembly of claim 1 , wherein the support rib is disposed between the filter media and liner element, the support rib extending in the axial direction from the inlet portion toward the outlet portion, the support rib configured to impede filter element collapse and constrain channel movement of the plurality of filter media layers.

8 . The filter assembly of claim 2 , further comprising a second filter media that is stacked on top of the filter media, the seal member being disposed around the filter media and the second filter media, wherein the plurality of seal ribs are stacked upon one another with a cross seal member disposed therebetween.

9 . The filter assembly of claim 1 , wherein:
the support rib comprises:
a base portion adjacent the inlet portion; and
a beam portion extending from the base portion toward the outlet portion.

10 . The filter assembly of claim 1 , wherein the filter element is a rectangular filter element.

11 . The filter assembly of claim 1 , further comprising a second filter media comprising a plurality of second filter media layers stacked on top of each other along the transverse direction to form the second filter media, the second filter media having a second inlet surface at a second inlet portion of the second filter media, and a second outlet surface at a second outlet portion of the second filter media, the second outlet portion disposed axially away from the second inlet portion in the axial direction,
wherein each second filter media layer in the plurality of second filter media layers is folded along a plurality of second bend lines between the second inlet portion and the second outlet portion, and each second filter media layer in the plurality of second filter media layers comprises a plurality of second wall segments extending in serpentine manner between the plurality of second bend lines, the plurality of second wall segments extending axially and defining second axial channels therebetween; wherein the filter media and the second filter media are positioned side-by-side, with a plurality of support ribs disposed therebetween.

12 . The filter assembly of claim 1 , wherein the seal member is an outlet seal member, further comprising an inlet seal member that is disposed around the inlet surface and is configured to form a seal with an inlet side of a filter housing.

13 . The filter assembly of claim 3 , wherein the seal member is an outlet seal member, further comprising an inlet seal member that is disposed around the inlet surface, wherein the liner element is disposed between the inlet seal member and the outlet seal member, and wherein the liner element extends around outer surfaces of the filter media, excluding the inlet surface and the outlet surface, of the filter media.

14 . The filter assembly of claim 11 , wherein the seal member is an outlet seal member, further comprising an inlet seal member that is disposed around the inlet surface, wherein the inlet seal member and the outlet seal member are extended to accommodate the filter media and the second filter media.

15 . The filter assembly of claim 1 , wherein the support rib comprises a base portion and a beam portion that extends from the base portion toward the outlet portion, wherein a width of the base portion increases moving away from the beam portion.

Assignees

• Cummins Filtration Inc

Inventors

• Adams Mark P
• Potratz Daniel
• Ouyang Ming
• Bannister Robert A
• Schwartz Scott W
• Cupery Jeremiah
• Holm Christopher E
• Li Miao
• Bates Billy
• Miller Dane Philip
• Moy Jerald J
• Tofsland Ken
• Terres Mark A
• Loken Gregory K
• Louison Matthew
• Verdegan Barry Mark

Classifications

• B01D2271/022

  Axial sealings · CPC title

• B01D2201/125

  with non-parallel pleats · CPC title

• B01D46/525

  which comprises flutes · CPC title

• B01D25/26

  Cell-type stack filters · CPC title

• B01D25/24 Primary

  Cell-type roll filters · CPC title