Honeycomb structure

Patent metadata

Field	Value
Publication number	US-9516702-B2
Application number	US-201313922809-A
Country	US
Kind code	B2
Filing date	Jun 20, 2013
Priority date	Dec 24, 2010
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

There is disclosed a honeycomb structure including a tubular honeycomb structure part having porous partition walls with which a plurality of cells are formed and an outer peripheral wall, and a pair of electrode parts arranged on a side surface of the honeycomb structure part, an electrical resistivity of the honeycomb structure part is from 10 to 200 Ωcm, each of the pair of electrode parts is formed into a band-like shape extending in a direction in which the cells extend, in a cross section perpendicular to the extending direction of the cells, the one electrode part is disposed opposite to the other electrode part via the center of the honeycomb structure part, and the electrode part has portions having a thickness of 0 to 70% of the maximum thickness of the electrode part.

First claim

The invention claimed is:

1. A honeycomb structure comprising:
a tubular honeycomb structure part having porous partition walls with which a plurality of cells extending from one end surface to the other end surface are formed to become through channels of a fluid and an outer peripheral wall positioned on an outermost periphery; and
a pair of electrode parts arranged on a side surface of the honeycomb structure part,
wherein an electrical resistivity of the honeycomb structure part is from 10 to 200 Ωcm,
each of the pair of electrode parts is formed into a band-like shape extending in a lengthwise direction in which the cells of the honeycomb structure part extend,
in a cross section perpendicular to the cell extending direction, the one electrode part in the pair of electrode parts is disposed opposite to the other electrode part in the pair of electrode parts via the center of the honeycomb structure part, and
the electrode part has portions having a thickness of 0 to 70% of the maximum thickness of the electrode part.

2. The honeycomb structure according to claim 1 , wherein the electrode part is provided with through holes.

3. The honeycomb structure according to claim 1 , wherein the maximum thickness of the electrode part is from 0.025 to 3 mm.

4. The honeycomb structure according to claim 2 , wherein the maximum thickness of the electrode part is from 0.025 to 3 mm.

5. The honeycomb structure according to claim 1 , wherein each of the pair of electrode parts is formed along a region between both end portions of the honeycomb structure part.

6. The honeycomb structure according to claim 2 , wherein each of the pair of electrode parts is formed along a region between both end portions of the honeycomb structure part.

7. The honeycomb structure according to claim 3 , wherein each of the pair of electrode parts is formed along a region between both end portions of the honeycomb structure part.

8. The honeycomb structure according to claim 4 , wherein each of the pair of electrode parts is formed along a region between both end portions of the honeycomb structure part.

9. The honeycomb structure according to claim 1 , wherein an electrical resistivity of the electrode part is from 0.01 to 100 Ωcm.

10. The honeycomb structure according to claim 2 , wherein an electrical resistivity of the electrode part is from 0.01 to 100 Ωcm.

11. The honeycomb structure according to claim 3 , wherein an electrical resistivity of the electrode part is from 0.01 to 100 Ωcm.

12. The honeycomb structure according to claim 4 , wherein an electrical resistivity of the electrode part is from 0.01 to 100 Ωcm.

13. The honeycomb structure according to claim 5 , wherein an electrical resistivity of the electrode part is from 0.01 to 100 Ωcm.

14. The honeycomb structure according to claim 6 , wherein an electrical resistivity of the electrode part is from 0.01 to 100 Ωcm.

15. The honeycomb structure according to claim 7 , wherein an electrical resistivity of the electrode part is from 0.01 to 100 Ωcm.

16. The honeycomb structure according to claim 8 , wherein an electrical resistivity of the electrode part is from 0.01 to 100 Ωcm.

17. The honeycomb structure according to claim 1 , wherein a conductor having an electrical resistivity lower than that of the electrode part is disposed on the surface of the electrode part.

Assignees

• Ngk Insulators Ltd

Inventors

• Noro Takashi
• Nagareda Kazumi
• Watanabe Tsuyoshi
• Kuno Shuhei
• Ito Tadato

Classifications

• H05B3/42

  non-flexible · CPC title

• F01N3/2828

  Ceramic multi-channel monoliths, e.g. honeycombs · CPC title

• H05B3/141

  Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds · CPC title

• H05B3/06 Primary

  Heater elements structurally combined with coupling elements or holders · CPC title

• H05B2203/024

  Heaters using beehive flow through structures · CPC title