Honeycomb structure

Patent metadata

Field	Value
Publication number	US-9518494-B2
Application number	US-201414215543-A
Country	US
Kind code	B2
Filing date	Mar 17, 2014
Priority date	Mar 22, 2013
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

A honeycomb structure constituted by honeycomb segments, where a honeycomb segment has a first end and second end surfaces of a quadrangular shape; the second end surface having an area larger than that of the first one, a first pair of two side surfaces facing each other in parallel, and a second pair of two side surfaces facing each other make side surfaces become gradually narrow from the second end surface toward the first end surface, where a plurality of honeycomb segments are disposed in such a manner that the honeycomb segments are aligned to form rows in parallel in a predetermined direction, so as to make adjacent honeycomb segments directed opposite to each other in first end surfaces bonded to each other with one of side surfaces of the second pair of side surfaces.

First claim

What is claimed is:

1. A honeycomb structure in which a plurality of honeycomb segments are integrally bonded via a bonding material, each of the honeycomb segments having a first end surface, a second end surface, porous partition walls to define and form a plurality of cells extending from the first end surface to the second end surface, and an outer peripheral surface connecting the first end surface to the second end surface,
wherein as to each of the honeycomb segments other than the honeycomb segments positioned in the outermost periphery of the honeycomb structure among the plurality of honeycomb segments,
the first end surface has a quadrangular shape,
the second end surface has a quadrangular shape having an area larger than that of the first end surface,
the outer peripheral surface comprises four side surfaces,
the four side surfaces are constituted of a pair of parallel side surfaces including two side surfaces facing each other in parallel and a pair of tapered side surfaces including two side surfaces facing each other so that a space between the surfaces narrows from the side of the second end surface toward the side of the first end surface,
when the first end surface is seen from a vertical direction thereto, both of X and Z are from 0.3 to 7 mm, where X is a distance between a side constituting the shape of the first end surface and coming in contact with the one side surface in the pair of tapered side surfaces and a side constituting the shape of the second end surface and coming in contact with the one side surface in the pair of tapered side surfaces, and Z is a distance between a side constituting the shape of the first end surface and coming in contact with the other side surface in the pair of tapered side surfaces and a side constituting the shape of the second end surface and coming in contact with the other side surface in the pair of tapered side surfaces,
S1/S2 is 0.8 or more, where S1 is the area of the first end surface and S2 is the area of the second end surface,
the plurality of honeycomb segments are disposed to constitute a plurality of parallel rows extending in a predetermined direction on an end surface of the honeycomb structure, and
the honeycomb segments constituting the respective rows have a relation between adjacent honeycomb segments in which the first end surfaces of the respective honeycomb segments are directed opposite to each other, and the tapered side surfaces of adjacent honeycomb segments face each other.

2. The honeycomb structure according to claim 1 , wherein the X and the Z have the same value.

3. The honeycomb structure according to claim 2 ,
wherein the honeycomb segments having been aligned with first end surfaces in the same direction as each other and included in adjacent rows are slightly dislocated from each other in an extending direction of the rows.

4. The honeycomb structure according to claim 3 ,
wherein each corner portion of a cross section vertical to a length direction of the honeycomb segment is formed into a round shape having a radius of 0.1 to 5 mm.

5. The honeycomb structure according to claim 2 ,
wherein each corner portion of a cross section vertical to a length direction of the honeycomb segment is formed into a round shape having a radius of 0.1 to 5 mm.

6. The honeycomb structure according to claim 2 ,
wherein each of the honeycomb segments have plugging portions to plug open end portions on the first end surface side of predetermined cells and open end portions on the second end surface side of the remaining cells.

7. The honeycomb structure according to claim 2 ,
wherein the honeycomb structure constructed by bonding a plural number of the honeycomb segments integrally bonded via the bonding material has an outer periphery coating layer formed on a processed surface of the outermost peripheral honeycomb segment by grinding processing.

8. The honeycomb structure according to claim 1 , wherein the X and the Z have different values.

9. The honeycomb structure according to claim 8 ,
wherein the honeycomb segments having been aligned with first end surfaces in the same direction as each other and included in adjacent rows are slightly dislocated from each other in an extending direction of the rows.

10. The honeycomb structure according to claim 9 ,
wherein each corner portion of a cross section vertical to a length direction of the honeycomb segment is formed into a round shape having a radius of 0.1 to 5 mm.

11. The honeycomb structure according to claim 8 ,
wherein each corner portion of a cross section vertical to a length direction of the honeycomb segment is formed into a round shape having a radius of 0.1 to 5 mm.

12. The honeycomb structure according to claim 1 ,
wherein the honeycomb segments having been aligned with first end surfaces in the same direction as each other and included in adjacent rows are slightly dislocated from each other in an extending direction of the rows.

13. The honeycomb structure according to claim 12 ,
wherein each corner portion of a cross section vertical to a length direction of the honeycomb segment is formed into a round shape having a radius of 0.1 to 5 mm.

14. The honeycomb structure according to claim 1 ,
wherein each corner portion of a cross section vertical to a length direction of the honeycomb segment is formed into a round shape having a radius of 0.1 to 5 mm.

15. The honeycomb structure according to claim 1 ,
wherein each of the honeycomb segments have plugging portions to plug open end portions on the first end surface side of predetermined cells and open end portions on the second end surface side of the remaining cells.

16. The honeycomb structure according to claim 1 ,
wherein the honeycomb structure constructed by bonding a plural number of the honeycomb segments integrally bonded via the bonding material has an outer periphery coating layer formed on a processed surface of the outermost peripheral honeycomb segment by grinding processing.

Assignees

• Ngk Insulators Ltd

Inventors

• Yamada Toshio
• Yanase Hidetoshi

Classifications

• Y10T428/24149

  Honeycomb-like · CPC title

• B01D46/247

  of the cells · CPC title

• Y10T428/24157

  Filled honeycomb cells [e.g., solid substance in cavities, etc.] · CPC title

• C04B2111/00793

  as filters or diaphragms · CPC title

• B01D46/2459

  of the plugs · CPC title