HONEYCOMB STRUCTURE - SUMITOMO CHEMICAL CO

Title:

HONEYCOMB STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2011/090015

Kind Code:

A1

Abstract:

A honeycomb structure wherein a sealing failure and a crack due to heat shock caused by cells having a small cross-section are prevented from occurring. A honeycomb structure used for a filter for purifying the exhaust gas discharged from an internal combustion engine has a double structure consisting of an outer tube and an inner tube. Inside cell partitioning walls for forming inside through-holes are provided on the inner side of the inner tube. Outside cell partitioning walls for forming outside through-holes are provided between the outer tube and the inner tube. Through-holes having an irregular cross section are formed by the inner tube and inside cell partitioning walls. Connection through-holes are formed by making at least one of the following connection patterns: the connection between a through-hole which has an irregular cross-section and an outside through-hole, the through-holes sharing the inner tube; the connection between a through-hole which has an irregular cross-section and another through-hole which has an irregular cross-section, the through-holes sharing an inside cell partitioning wall; and the connection between a through-hole which has an irregular cross-section and an inside through-hole, the through-holes sharing an inside cell partitioning wall.

Inventors:

KOMORI TERUO (JP)
YOSHINO HAJIME (JP)

Application Number:

PCT/JP2011/050716

Publication Date:

July 28, 2011

Filing Date:

January 18, 2011

Export Citation:

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Assignee:

SUMITOMO CHEMICAL CO (JP)
KOMORI TERUO (JP)
YOSHINO HAJIME (JP)

International Classes:

B01D39/20; B01D46/00; B01J35/04; F01N3/02

Domestic Patent References:

WO2007023653A1

2007-03-01

Foreign References:

JP2003024726A	2003-01-28
JPH07246341A	1995-09-26
JPS62163697U	1987-10-17
JP2005270755A	2005-10-06

Other References: