Filter element with tapered perimeter

Patent metadata

Field	Value
Publication number	US-11400405-B2
Application number	US-201716315765-A
Country	US
Kind code	B2
Filing date	Jul 11, 2017
Priority date	Jul 13, 2016
Publication date	Aug 2, 2022
Grant date	Aug 2, 2022

Abstract

Various example embodiments relate to filter elements. One such filter element includes filter media having a plurality of flow channels. Each of the plurality of flow channels comprises an inlet having an inlet height and an outlet having an outlet height. The inlet height is larger than the outlet height. The filter media defines an inlet face having an inlet face area and an outlet face having an outlet face area. The inlet face is structured to receive air to be filtered. The outlet face is structured to output filtered air. The inlet face area is larger than the outlet face area.

First claim

What is claimed is:

1. A filter element comprising:
filter media having a plurality of asymmetrically formed tetrahedron flow channels, each of the plurality of asymmetrically formed tetrahedron flow channels comprising an inlet having an inlet height and an outlet having an outlet height, the inlet height larger than the outlet height, the filter media defining an inlet face having an inlet face area and an outlet face having an outlet face area, the inlet face is structured to receive air to be filtered, the outlet face is structured to output filtered air, the inlet face area being larger than the outlet face area.

2. The filter element of claim 1 , further comprising a core, wherein the filter media is wound around the core.

3. The filter element of claim 1 , wherein the filter media is layered to form a polyhedron shape.

4. The filter element of claim 1 , further comprising a sidewall formed by the filter media, the sidewall angled with respect to the inlet face at a non-perpendicular angle.

5. The filter element of claim 1 , wherein the plurality of asymmetrically formed tetrahedron flow channels are alternately sealed at the inlet and the outlet.

6. The filter element of claim 1 , wherein the inlet is a substantially v-shaped inlet, the inlet height being the distance from a lower end of the v-shaped inlet to an upper end of the v-shaped inlet, along an axis that is substantially perpendicular to a longitudinal length of the filter media.

7. The filter element of claim 1 , wherein the outlet is a substantially w-shaped outlet, the outlet height being the distance from a lower end of the w-shaped outlet to an upper end of the w-shaped inlet, along an axis that is substantially perpendicular to a longitudinal length of the filter media.

8. The filter element of claim 1 , wherein the inlet face area is substantially rectangular and the outlet face area is substantially rectangular.

9. The filter element of claim 8 , wherein the substantially rectangular inlet face area is substantially coaxial to the substantially rectangular outlet face area.

10. The filter element of claim 1 , wherein the fitter media is a single layer pair with a truncated tetrahedral shape on the outlet face.

11. The filter element of claim 10 , wherein the filter media is cut at a substantially oblique angle relative to the inlet face.

12. The filter element of claim 1 , wherein the filter media is substantially flat.

13. The filter element of claim 1 , wherein the inlet height being larger than the outlet height is formed by the tetrahedron flow channels comprising a deeper tetrahedron shape toward an edge of the inlet face than an edge of the outlet face.

14. A filter element comprising:
filter media having a plurality of tetrahedron flow channels, each of the plurality of tetrahedron flow channels comprising an inlet having an inlet height and an outlet having an outlet height, the inlet height larger than the outlet height, the filter media defining an inlet face having an inlet face area and an outlet face having an outlet face area, the inlet face is structured to receive air to be filtered, the outlet face is structured to output filtered air, the inlet face area being larger than the outlet face area,
wherein the inlet height being larger than the outlet height is formed by the tetrahedron flow channels comprising a deeper tetrahedron shape toward an edge of the inlet face than an edge of the outlet face.

15. A filtration system comprising:
a housing body, the housing body comprising:
a housing outlet, a housing inlet, and a housing side wall, the housing side wall being tapered with respect to the housing inlet face and the housing outlet at a non-perpendicular housing draft angle, wherein the housing draft angle of the housing side wall form a filter compartment; and

a filter element installed in the filter compartment, the filter element comprising:
filter media having a plurality of asymmetrically formed tetrahedron flow channels, each of the plurality of asymmetrically formed tetrahedron flow channels comprising an inlet having an inlet height and an outlet having an outlet height, the inlet height larger than the outlet height,
the filter media defining an inlet face having an inlet face area and an outlet face having an outlet face area, the inlet face is structured to receive air to he filtered, the outlet face is structured to output filtered air, and the inlet face area being larger than the outlet face area.

16. The filtration system of claim 15 , the filter element further comprising a filter element sidewall formed by the filter media, the filter element sidewall being tapered with respect to the inlet face and the outlet face at a non-perpendicular filter element draft angle, the filter element draft angle angled with respect to the inlet face at a non-perpendicular angle and substantially similar to the housing draft angle.

17. The filtration system of claim 15 , wherein the filter media is a single layer pair with a truncated tetrahedral shape on the outlet face.

18. A filter element comprising:
filter media having a plurality of flow channels, each of the plurality of flow channels comprising an inlet having an inlet height and an outlet having an outlet height, the inlet height larger than the outlet height, the filter media defining an inlet face having an inlet face area and an outlet face having an outlet face area, the inlet face is structured to receive air to he filtered, the outlet face is structured to output filtered air, the inlet face area being larger than the outlet face area,
wherein the inlet height being larger than the outlet height is formed by the flow channels comprising a deeper tetrahedron shape toward an edge of the inlet face than an edge of the outlet face.

Assignees

• Cummins Filtration Ip Inc

Inventors

• Holm Christopher E
• Schwartz Scott W

Classifications

• B01D46/10

  Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces · CPC title

• B01D46/0001

  Making filtering elements · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D46/526 Primary

  in stacked arrangement · CPC title

• B01D2279/60

  for the intake of internal combustion engines or turbines · CPC title