Title:
ガスセンサ素子
Document Type and Number:
Japanese Patent JP6836928
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a gas sensor element which offers compactness and reduced variation in oxygen concentration gradient inside the gas sensor element and is capable of accurately detecting concentration of a specific gas.SOLUTION: A gas sensor element comprises a first space 150 into which gas under measurement is introduced, an introduction passage 125 for introducing the gas under measurement into a second space, a first pump cell, an oxygen concentration detection cell having a detection electrode, and a second pump cell. On an upstream side of the introduction passage in an introduction direction F of the gas under measurement, the detection electrode extends continuously from a first virtual line C1, which is parallel to a side wall 140s1 extending in a direction of an axis AX to form the first space and passes through an edge of the introduction passage on the sidewall side, through a section between the other sidewall 140s2 and the introduction passage to a second virtual line C2 that is perpendicular to the sidewalls and passes through an edge of the introduction passage on a downstream side in the introduction direction of the gas under measurement. The introduction passage and a second inner electrode at least partially overlap with each other in a lamination direction.SELECTED DRAWING: Figure 4
Inventors:
Furuta Hitoshi
Akihiro Kojima
Masao Nakagawa
Kentaro Kamata
Akihiro Kojima
Masao Nakagawa
Kentaro Kamata
Application Number:
JP2017026083A
Publication Date:
March 03, 2021
Filing Date:
February 15, 2017
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
G01N27/416
Domestic Patent References:
| JP10221299A | ||||
| JP9329578A | ||||
| JP2000121604A | ||||
| JP2002310987A | ||||
| JP2015200642A | ||||
| JP2000097903A | ||||
| JP2012531613A |
Foreign References:
| US20120097553 |
Attorney, Agent or Firm:
Kenichiro Akao
Akira Shimoda
Kazuhiko Kurihara
Akira Shimoda
Kazuhiko Kurihara