Honeycomb structure

Patent metadata

Field	Value
Publication number	US-9707515-B2
Application number	US-201414496738-A
Country	US
Kind code	B2
Filing date	Sep 25, 2014
Priority date	Mar 30, 2012
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A honeycomb structure of the present invention includes a honeycomb structure body and a pair of electrode member arranged at a side surface of the honeycomb structure body. The honeycomb structure body has an electrical resistivity of 1 to 200 Ωcm, and the respective pair of electrode members is formed into a band-like shape extending in a direction in which the cells extend. In a cross section perpendicular to the cell extending direction, one of the electrode members is arranged opposite to another of the electrode members sandwiching a center of the honeycomb structure body. One or more of slits, which being open to a side surface, are formed at the honeycomb structure body. At least the one slit is formed so as not to intersect with a straight line connecting center portions of the respective pair of electrode members in the cross section perpendicular to the cell extending direction.

First claim

The invention claimed is:

1. A honeycomb structure, comprising:
a porous partition wall that defines and forms a plurality of cells, the plurality of cells extending from one end face to another end face to become through channels of a fluid;
a tubular honeycomb structure body that includes a circumferential wall positioned at an outermost circumference; and
a pair of electrode members arranged at a side surface of the honeycomb structure body, wherein
the honeycomb structure body has an electrical resistivity of 1 to 200 Ωcm,
the respective pair of electrode members are formed into a band-like shape extending in a direction in which the cells of the honeycomb structure body extend,
in a cross section perpendicular to the cell extending direction, one of the electrode members in the pair of electrode members is arranged opposite to another of the electrode members in the pair of electrode members sandwiching a center of the honeycomb structure body,
one or more of slits are formed at the honeycomb structure body, the slit being open to a side surface, and
at least the one slit is formed so as not to intersect with a straight line connecting center portions of the respective pair of electrode members in the cross section perpendicular to the cell extending direction.

2. The honeycomb structure according to claim 1 , wherein
the honeycomb structure body includes two or more of the slits, and
50% or more of slits among the two or more slits are formed so as not to intersect with the straight line connecting the center portions of the respective pair of electrode members in the cross section perpendicular to the cell extending direction.

3. The honeycomb structure according to claim 2 , wherein
all the slits formed at the honeycomb structure body are formed so as not to intersect with the straight line connecting the center portions of the respective pair of electrode members in the cross section perpendicular to the cell extending direction.

4. The honeycomb structure according to claim 1 , further comprising
a filler filled in at least one of the slits is provided, wherein
the filler is filled to at least some spaces of the slits.

5. The honeycomb structure according to claim 2 , further comprising
a filler filled in at least one of the slits is provided, wherein
the filler is filled to at least some spaces of the slits.

6. The honeycomb structure according to claim 3 , further comprising
a filler filled in at least one of the slits is provided, wherein
the filler is filled to at least some spaces of the slits.

7. The honeycomb structure according to claim 4 , wherein
two or more of the slits are formed at the honeycomb structure body, and
a filler is filled to a slit 50% or more of the two or more slits.

8. The honeycomb structure according to claim 5 , wherein
two or more of the slits are formed at the honeycomb structure body, and
a filler is filled to a slit 50% or more of the two or more slits.

9. The honeycomb structure according to claim 6 , wherein
two or more of the slits are formed at the honeycomb structure body, and
a filler is filled to a slit 50% or more of the two or more slits.

10. The honeycomb structure according to claim 7 , further comprising
fillers filled to all of two or more of the slits formed at the honeycomb structure body.

11. The honeycomb structure according to claim 8 , further comprising
fillers filled to all of two or more of the slits formed at the honeycomb structure body.

12. The honeycomb structure according to claim 9 , further comprising
fillers filled to all of two or more of the slits formed at the honeycomb structure body.

13. The honeycomb structure according to claim 4 , wherein
the fillers are filled to all spaces in the slit.

14. The honeycomb structure according to claim 7 , wherein
the fillers are filled to all spaces in the slit.

15. The honeycomb structure according to claim 10 , wherein
the fillers are filled to all spaces in the slit.

Assignees

• Ngk Insulators Ltd

Inventors

• Mase Kazumi
• Kasai Yoshiyuki
• Tokuda Masahiro

Classifications

• B01J35/57

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