公开(公告)号：US20190301333A1

公开(公告)日：2019-10-03

申请号：US16299776

申请日：2019-03-12

Applicant: NGK INSULATORS, LTD.

Inventor： Naoki OKAMOTO ,  Naoya TAKASE

IPC: F01N3/20 ,  B01D53/94 ,  F01N3/28

Abstract: A support for an electric heating type catalyst includes: a honeycomb structure having: porous partition walls extending through the honeycomb structure from an inflow end face to an outflow end face to define a plurality of cells forming a through channel; and an outer peripheral wall located at the outermost periphery; a pair of electrode layers disposed on the outer peripheral wall of the honeycomb structure; and a pair of electrode portions. Each of the electrode layers is formed in a strip shape extending in an extending direction of the cell of the honeycomb structure. In a cross section orthogonal to the extending direction of the cell, one electrode layer of the pair of electrode layers is disposed on a side opposite to the other electrode layer across a center of the honeycomb structure. Each of the electrode layers is electrically connected to each of the electrode portions via two or more base layers, and the base layers have conductivity and are spaced apart from each other. Each of the electrode portions includes two or more electrodes, and each of the electrodes is fixed to outer surfaces of the base layers.

公开(公告)号：US20200157998A1

公开(公告)日：2020-05-21

申请号：US16668441

申请日：2019-10-30

Applicant: NGK INSULATORS, LTD.

Inventor： Naoki OKAMOTO ,  Takayuki Inoue

IPC: F01N13/18 ,  F01N3/022 ,  F01N3/20

Abstract: A support for an electric heating type catalyst comprises: a honeycomb structure having partition walls that define a plurality of cells, each of cells extending from one end face to other end face to form a fluid path for a fluid; and a pair of electrode layers formed on a side surface of the honeycomb structure, the pair of electrode layers being arranged so as to face each other across a center of the honeycomb structure. The pair of electrode layers is electrically connected to the honeycomb structure. The honeycomb structure side of each of the electrode layers comprises a portion having a thermal expansion coefficient lower than that of the honeycomb structure.

公开(公告)号：US20220397049A1

公开(公告)日：2022-12-15

申请号：US17821852

申请日：2022-08-24

Applicant: NGK Insulators, Ltd.

Inventor： Hironori TAKAHASHI ,  Naoki OKAMOTO

IPC: F01N3/20 ,  F01N3/28

Abstract: An electrically heating converter includes: a pillar shaped honeycomb structure made of conductive ceramics, including: an outer peripheral wall; and a partition wall disposed on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells, each of the cells penetrating from one end face to other end face to form a flow path; metal electrodes; conductive connecting portions arranged on a surface of the pillar shaped honeycomb structure; and a pressing member configured to press the metal electrodes against the conductive connecting portions, so that the metal electrodes are electrically connected to the pillar shaped honeycomb structure. Each of the conductive connecting portions has an electrical resistivity lower than that of the pillar shaped honeycomb structure.

公开(公告)号：US20220287154A1

公开(公告)日：2022-09-08

申请号：US17455700

申请日：2021-11-19

Applicant: NGK INSULATORS, LTD.

Inventor： Yukiharu MORITA ,  Takayuki INOUE ,  Naoki OKAMOTO

IPC: H05B3/03 ,  B01D53/94 ,  B01J35/04

Abstract: A honeycomb structure 20 according to the present invention includes: a honeycomb structure portion 10 including: an outer peripheral wall 12; a partition wall 13 arranged on an inner side of the outer peripheral wall 12, the partition wall 13 defining a plurality of cells 16 each extending from one end face to other end face to form a flow path; and a pair of electrode layers 14a, 14b arranged on a surface of the outer peripheral wall 12 of the honeycomb structure portion 10, the pair of electrode layers 14 being provided so as to face each other across a central axis of the honeycomb structure portion 10. The honeycomb structure portion 10 is made of ceramics having an NTC property, and the pair of electrode layers are made of a material having a PTC property.

公开(公告)号：US20210087960A1

公开(公告)日：2021-03-25

申请号：US16989068

申请日：2020-08-10

Applicant: NGK INSULATORS, LTD.

Inventor： Naoki OKAMOTO ,  Naoya TAKASE

IPC: F01N3/20 ,  F01N3/28 ,  B01J35/04 ,  B01D53/94

Abstract: An electric heating type support includes: a pillar shaped honeycomb structure being configured to a ceramic, including: an outer peripheral wall; and a partition wall disposed on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path; an electrode layer disposed on a surface of the outer peripheral wall of the pillar shaped honeycomb structure; two or more underlayers having conductivity, the underlayers being provided on the electrode layer so as to be spaced apart from each other; and a metal electrode provided on the underlayers.
A surface of each of the underlayers has a concave portion forming a space between each of the underlayers and the metal electrode.