JPH0361565U

JPH0361565U -

Info

Publication number: JPH0361565U
Application number: JP12329489U
Authority: JP
Priority date: 1989-10-21
Filing date: 1989-10-21
Publication date: 1991-06-17

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の縦断面図、第２図
は第１図の−′線に沿う縦断面図、第３図は
本考案の一実施例の分解斜視図、第４図はスラリ
ー撹拌時間とそのスラリーを用いた多孔質シート
の気孔率の関係を示す図、第５図は多孔質シート
のＰｔ添加量と電気抵抗との関係を示す図、第６
図は従来の酸素濃度センサの一例の概略斜視図、
第７図は従来の酸素濃度センサの課題説明用要部
斜視図、第８図は第７図の酸素濃度センサの出力
低下を説明する図である。１１……下部プレート、１２……Ｐｔ入り多孔
質シート、１３……スペーサ、１４……電解質部
、１５……第１の電極、１６……第２の電極、１
７……上部プレート、１８ａ，１８ｂ……リード
線。 Fig. 1 is a longitudinal sectional view of an embodiment of the present invention, Fig. 2 is a longitudinal sectional view taken along line -' in Fig. 1, Fig. 3 is an exploded perspective view of an embodiment of the invention, and Fig. 4. 5 is a diagram showing the relationship between the slurry stirring time and the porosity of a porous sheet using the slurry, FIG. 5 is a diagram showing the relationship between the amount of Pt added to the porous sheet and electrical resistance, and FIG.
The figure is a schematic perspective view of an example of a conventional oxygen concentration sensor.
FIG. 7 is a perspective view of a main part of a conventional oxygen concentration sensor to explain problems, and FIG. 8 is a diagram illustrating a decrease in output of the oxygen concentration sensor of FIG. DESCRIPTION OF SYMBOLS 11... Lower plate, 12... Pt-containing porous sheet, 13... Spacer, 14... Electrolyte portion, 15... First electrode, 16... Second electrode, 1
7... Upper plate, 18a, 18b... Lead wire.

Claims

[Claims for Utility Model Registration] A first electrode is provided on one side of a thin plate-shaped electrolyte section made of an oxygen ion-conducting solid electrolyte on the side where the atmosphere is introduced, and the other side on the side where exhaust gas is introduced. A second electrode is provided on the surface, the electrolyte section is stacked on the lower plate via a spacer so that the first electrode faces the lower plate, and an atmosphere communication space with one end opened by the spacer is formed. In the stacked oxygen concentration sensor having a structure, a conductive porous sheet having a size that fits within the inner frame of the spacer is embedded within the inner frame of the spacer, and the conductive porous sheet is disposed within the atmosphere communication space. Stacked oxygen concentration sensor.