# US 10,118,126 B2 · Honeycomb structure

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- Number: US 10,118,126 B2
- Document ID: US10118126B2
- Status: Granted
- Kind: B2
- Application number: 15/271,561
- Filed: 2016-09-21
- Published: 2017-03-23
- Granted: 2018-11-06
- Earliest claimed: 2015-09-21
- Assignees: Denso Corporation
- Applicants: Denso Corporation
- Inventors: Masakazu Murata
- Web page: https://patentgrep.com/patent/US10118126B2

## CPC

- B01D 53/94: by catalytic processes
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## Abstract

A honeycomb structure has a cylindrical outer skin and a partition wall and a plurality of cells and a separator. A plurality of intersections intersecting the two partition walls each other are disposed in the outer skin. Some of the intersections are reinforced by the reinforcing part. Two angles θ1 and θ2 are formed by a radial direction of the outer skin and respective two partition walls intersecting with each other. A smaller of two angles θ1 and θ2 is larger than a predetermined angle θth. Further, some of the reinforcing parts are respectively formed only on some of the intersections which are disposed in a vicinity of the separator.

## Claims

### Claim 1

A honeycomb structure, which purifies exhaust gases, comprising:
an outer skin;
a plurality of partition walls formed inside of the outer skin, the plurality of partition walls being arranged in a quadrangle lattice; and
a plurality of cells which forms flow channels for the exhaust gases,
wherein the plurality of the cells is divided into inner cells and outer cells, the inner cells being formed in a region which is an inner part of the honeycomb structure, and which includes a central axis of the outer skin, the outer cells being disposed outside of the region where the inner cells are formed, and
an opening area of each outer cell is larger than the opening area of each inner cell, and a separator is disposed between the region where the inner cells are formed and the region where the outer cells are formed,
wherein a plurality of intersections is formed by two partition walls intersecting with each other, the plurality of intersections is disposed inside of the outer skin, and a reinforcing part is formed on some intersections of the plurality of intersections,
wherein the reinforcing part is formed only on the intersections disposed within a predetermined distance from the separator, in the intersections on which the reinforcing part is formed, those intersections satisfy a condition that two respective angles are formed by two respective partition walls intersecting with a radial direction of the outer skin and a smaller angle of the two angles is larger than a predetermined angle of 22.5°.

### Claim 2 (depends on 1)

A honeycomb structure as set forth in claim 1, wherein the intersections on which the reinforcing part is formed have a concave, curved line at an interior corner.

### Claim 3 (depends on 1)

A honeycomb structure as set forth in claim 1, wherein
when the smaller angle of the two angles which are formed by the two respective partition wall intersecting with the radial direction of the outer skin is approximately 22.5°, an area of the reinforcing part when viewed in an axis direction of the honeycomb structure is minimized,
when the smaller angle of the two angles is approximately 45°, the area of the reinforcing part when viewed in the axis direction of the honeycomb structure is maximized, and
as the smaller of the two angles increases from 22.5° to 45°, the area of the reinforcing part when viewed in the axial direction of the honeycomb structure increases.