Honeycomb bodies with honeycomb structure strengthening features and extrusion dies therefor

Patent metadata

Field	Value
Publication number	US-11839995-B2
Application number	US-201917059808-A
Country	US
Kind code	B2
Filing date	May 30, 2019
Priority date	May 31, 2018
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

A honeycomb body having a honeycomb structure and a peripheral skin, the honeycomb structure having walls defining a plurality of cells including peripheral cells disposed directly adjacent to the peripheral skin. One or more of the peripheral cells is at least partially defined by a first wall surface, a second wall surface, and a skin surface portion extending between the first wall surface and the second wall surface. A continuously-varying radius extends from a first tangent to the first wall surface along the skin surface portion and to a second tangent to the second wall surface. Other honeycomb bodies, structures, and extrusion dies for forming honeycomb structures are disclosed.

First claim

What is claimed is:

1. A honeycomb body comprising a honeycomb structure and
a peripheral skin;
wherein the honeycomb structure comprises an interconnecting array of walls defining a plurality of central cells comprised of first parallel walls extending in an axial direction and configured in an x-direction in a transverse cross-sectional plane (“x-y plane”) perpendicular to the axial direction (“x-extending walls”) and intersecting at right angles with second walls configured in a y-direction in the x-y plane (“y-extending walls”), the honeycomb structure further comprising a plurality of peripheral cells disposed directly adjacent to the peripheral skin,
wherein the peripheral skin forms at least part of at least some of the peripheral cells,
wherein intersections of the x-y plane and first wall surfaces of the x-extending walls of the central cells lie on or are parallel to an x-extending reference line in the x-y plane, and
wherein intersections of the x-y plane and second wall surfaces of the y-extending walls of the central cells lie on or are parallel to a y-extending reference line in the x-y plane,
wherein at least some of the peripheral cells comprise an x-extending curved portion that passes through, and extends in an x-direction beyond, a y-extending wall plane of a central cell which lies directly adjacent in a y-direction.

2. The honeycomb body of claim 1 wherein the peripheral skin comprises a varying thickness about a circumference of the honeycomb body.

3. The honeycomb body of claim 1 wherein at least some of the peripheral cells further comprise a y-extending curved portion that passes through, and extends in a y-direction beyond, an x-extending wall plane of a central cell which lies directly adjacent in an x-direction.

4. The honeycomb body of claim 3 further comprising a transition web comprising transition web surfaces which form at least a portion of adjacent first and second peripheral cells, wherein the transition web forms a curved portion of a first peripheral cell (“first curved portion”) and a curved portion of a second peripheral cell (“second curved portion”).

5. The honeycomb body of claim 4 wherein the first curved portion comprises a shape with a continuously-varying radius.

6. The honeycomb body of claim 5 wherein the second portion comprises a shape with a continuously-varying radius.

7. The honeycomb body of claim 1 wherein the central cells comprise square cells.

8. The honeycomb body of claim 1 wherein the central cells comprise rectangular cells.

9. The honeycomb body of claim 1 wherein the central cells are selected from the group consisting of square cells and rectangular cells.

10. The honeycomb body of claim 1 wherein one or more of the peripheral cells is at least partially defined by an x-extending wall, a y-extending wall, and a y-extending curved portion or an x-extending curved portion.

11. The honeycomb body of claim 1 wherein the array of crisscrossing walls is disposed about a longitudinal axis extending in the axial direction, and the transition web intersects with the peripheral skin in a radial configuration with respect to the longitudinal axis.

12. The honeycomb body of claim 1 wherein the curved portion comprises a shape with a continuously-varying radius.

13. The honeycomb body of claim 1 wherein the curved portion comprises a shape with a continuously-varying radius extending from a first tangent with an x-extending wall to a second tangent with a y-extending wall.

14. A honeycomb body comprising a honeycomb structure and
a peripheral skin;
wherein the honeycomb structure comprises an interconnecting array of walls defining a plurality of central cells comprised of first parallel walls extending in an axial direction and configured in an x-direction in a transverse cross-sectional plane (“x-y plane”) perpendicular to the axial direction (“x-extending walls”) and intersecting at right angles with second walls extending in a y-direction in the x-y plane (“y-extending walls”), the honeycomb structure further comprising a plurality of peripheral cells disposed directly adjacent to the peripheral skin,
wherein the central cells are selected from the group consisting of square cells and rectangular cells,
wherein the peripheral skin forms at least part of at least some of the peripheral cells,
wherein intersections of the x-y plane and first wall surfaces of the x-extending walls of the central cells lie on or are parallel to an x-extending reference line in the x-y plane, and
wherein intersections of the x-y plane and second wall surfaces of the y-extending walls of the central cells lie on or are parallel to a y-extending reference line in the x-y plane,
wherein at least some of the peripheral cells comprise an x-extending curved portion that passes through, and extends in an x-direction beyond, a y-extending wall plane of a central cell which lies directly adjacent in a y-direction.

Assignees

• Corning Inc

Inventors

• Miller Kenneth Richard
• Nickerson Seth Thomas
• Zhong Danhong

Classifications

• B01J35/57

  Honeycombs · CPC title

• B28B3/269 Primary

  For multi-channeled structures, e.g. honeycomb structures · CPC title

• B01D46/2462 Primary

  the outer peripheral sealing · CPC title

• B01D46/2474

  of the walls along the length of the honeycomb · CPC title

• B01D46/2482

  Thickness, height, width, length or diameter · CPC title