JPS59175164U

JPS59175164U - Oxygen concentration detector with heater

Info

Publication number: JPS59175164U
Application number: JP6866183U
Authority: JP
Inventors: 伸秀加藤; 隆生村瀬
Original assignee: 日本碍子株式会社
Priority date: 1983-05-09
Filing date: 1983-05-09
Publication date: 1984-11-22

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 drawings]

第１図は本考案の加熱器付酸素濃度検出器の一実施例を
説明する断面図であり、第２図は本考案の加熱器付酸素
濃度検出器に用いる棒状加熱器の一具体例を示す半断面
図であり、さらに第３図は本考案の加熱器付酸素濃度検
出器に用いる金属製保護カバーの一具体例を示す斜視説
明図である。そして、第４図は、従来の加熱器付酸素濃度検出器と本
考案の加熱器付酸素濃度検出器の排気ガス温度に対する
固体電解質温度を示すグラフである。１：有底筒状固体電解質、２：ハウジング、３：タルク
、４：ワッシャ、５：リング、６：棒状加熱器、７：保
護カバー、８：セラミック、９：リード線、１０：発熱
線、１１ニル−パー、１２：排気ガス導入口。FIG. 1 is a cross-sectional view illustrating an embodiment of the oxygen concentration detector with a heater of the present invention, and FIG. 2 shows a specific example of the rod-shaped heater used in the oxygen concentration detector with a heater of the present invention. FIG. 3 is a perspective explanatory view showing a specific example of a metal protective cover used in the oxygen concentration detector with heater of the present invention. FIG. 4 is a graph showing the solid electrolyte temperature relative to the exhaust gas temperature of the conventional oxygen concentration detector with a heater and the oxygen concentration detector with a heater of the present invention. 1: Bottomed cylindrical solid electrolyte, 2: Housing, 3: Talc, 4: Washer, 5: Ring, 6: Rod-shaped heater, 7: Protective cover, 8: Ceramic, 9: Lead wire, 10: Exothermic wire, 11 Nil-par, 12: Exhaust gas inlet.

Claims

[Scope of utility model registration request]

(1) A bottomed cylindrical solid electrolyte with porous platinum electrodes on its inner and outer surfaces, and a housing that exposes the closed end of the solid electrolyte to the exhaust gas, while keeping the inside of the cylinder airtightly isolated from the exhaust gas. and a metal protective cover surrounding the outer periphery of the closed end side of the solid electrolyte and having an exhaust gas inlet;
In the oxygen concentration detector with a heater having a rod-shaped heater inserted into the cylinder of the solid electrolyte, the rod-shaped heater is a ceramic heater having a positive temperature coefficient of resistance, and the ceramic heater is An oxygen concentration detector with a heater, characterized by a ceramic heater with a heating wire embedded in the ceramic.

(2) The temperature coefficient of resistance of the ceramic heater is 0.
3%/°C or more, the oxygen concentration detector with a heater according to claim 1, which is a utility model.

(3) Oxygen concentration detection with a heater according to claim 1 or 2, wherein the ceramic heater is constructed by embedding a tungsten wire in an alumina ceramic. vessel.