JPS5839558U

JPS5839558U - gas sensor

Info

Publication number: JPS5839558U
Application number: JP13461781U
Authority: JP
Inventors: 秀明八木; 圭一林
Original assignee: 日本特殊陶業株式会社
Priority date: 1981-09-10
Filing date: 1981-09-10
Publication date: 1983-03-15

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図のＡおよびＢは従来例の斜視図、第２図は本考案
実施例の斜視図でＡ図はセラミックヒータ、Ｂ図は検知
素子を載置した完成品、第３図は別の実施例斜視図であ
り、Ａ図はセラミックヒータ、Ｂ図は検知素子を載置し
た完成品、第４図は温度による検知感度を表したグラフ
、第５図は印加電圧の時間と温度曲線のグラフである。１、　６．　１１．　２１・・・・・・検知素子、セ・
・・・・・ヒータリード線、３・・・・・・電極および
ヒータリード線、４．２４・・・・・・Ｎｉピン、７．
１７・・・・・・％ｔｉ、８・・・・・・絶縁板、９・
・・・・・金属線ヒータ、１０・・・・・・ヒータ端子
、１２・・・・・・ヒータリード線、１３．２３・・曲
検知リード線、１４・・・・・・冷却窓、１５．２５・
・回通気孔、１６・・・・・・ヒータ端子、１８．２８
・・・・・・セラミックヒータ、１９．２９・・・・・
・発熱線部、２０・・・・・・検知端子。Figures A and B in Figure 1 are perspective views of the conventional example, Figure 2 is a perspective view of the embodiment of the present invention, Figure A is a ceramic heater, Figure B is a finished product with a sensing element mounted, and Figure 3 is a different one. These are perspective views of the embodiment, in which Figure A is a ceramic heater, Figure B is a finished product with a sensing element mounted thereon, Figure 4 is a graph showing detection sensitivity depending on temperature, and Figure 5 is a graph of applied voltage time and temperature curves. It is a graph. 1, 6. 11. 21...Detection element,
... Heater lead wire, 3 ... Electrode and heater lead wire, 4.24 ... Ni pin, 7.
17...%ti, 8...Insulating plate, 9.
... Metal wire heater, 10 ... Heater terminal, 12 ... Heater lead wire, 13.23 ... Curve detection lead wire, 14 ... Cooling window, 15.25・
・Circulation vent, 16... Heater terminal, 18.28
...Ceramic heater, 19.29...
・Heating wire part, 20...detection terminal.

Claims

[Scope of utility model registration request]

In a gas sensor that uses a semiconductor gas detection element mainly made of metal oxide that exhibits electrical resistance changes depending on gas concentration and a metal wire heater to improve its sensitivity, a ceramic heater is used instead of the metal wire heater. A gas sensor characterized by having a structure including a plurality of ventilation holes on the heating surface of the sensing element.