JPS58223055A - Oxygen concentration detector - Google Patents
Oxygen concentration detectorInfo
- Publication number
- JPS58223055A JPS58223055A JP57105913A JP10591382A JPS58223055A JP S58223055 A JPS58223055 A JP S58223055A JP 57105913 A JP57105913 A JP 57105913A JP 10591382 A JP10591382 A JP 10591382A JP S58223055 A JPS58223055 A JP S58223055A
- Authority
- JP
- Japan
- Prior art keywords
- detection element
- heat generating
- heating element
- solid electrolyte
- oxygen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/4067—Means for heating or controlling the temperature of the solid electrolyte
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は酸素イオン伝導性固体電解質を用いて酸素濃度
を検出し、電気信号として取出すための酸素濃度検出器
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an oxygen concentration detector for detecting oxygen concentration using an oxygen ion conductive solid electrolyte and extracting it as an electrical signal.
従来例の構成とその問題点
従来、この種の酸素濃度検出器は、例えば固体電解質と
してイツトリア添加ジルコニア磁器などを用い、電極と
して白金などを用いたものが一般的である。このような
酸素濃度検出器においては、所定の検出動作を行わせる
ために、通常４００℃ ゛程度の温度に加熱してお
く必要がある。Conventional Structure and Problems Conventionally, this type of oxygen concentration detector has generally used, for example, itria-doped zirconia porcelain as the solid electrolyte and platinum or the like as the electrode. Such an oxygen concentration detector usually needs to be heated to a temperature of about 400° C. in order to perform a predetermined detection operation.
従来、酸素濃度検出器を動作温度まで加熱しておく手段
上して、酸素イオン伝導性固体電解質の素体を包囲する
ようにニクロム線などの抵抗発熱体を配置する方法、廿
たけ素体の外周部に抵抗発熱体を巻付ける方法などが用
いられていた。Conventionally, methods for heating oxygen concentration detectors to operating temperature include arranging a resistance heating element such as a nichrome wire so as to surround an oxygen ion conductive solid electrolyte element; A method such as wrapping a resistance heating element around the outer periphery was used.
ところが、このような従来の構造では、抵抗発熱体の発
熱の際に、抵抗発熱体が膨張して垂−トがってし１つた
り、配置された位置かずれたりして、素体の温度分布が
変化し、酸素の濃度差によって得られる起電力か変動し
てし甘うという問題かあった０
発明の目的
本発明はこのような従来の欠点を解決するもので、抵抗
発熱体の発熱によって抵抗発熱体の位置がずれるのを防
ぐことにより、酸素イオン伝導性固体電解質の素体の温
度分布が変化しないようにすることを目的とするもので
ある。However, in such a conventional structure, when the resistance heating element generates heat, the resistance heating element expands and hangs down, or shifts from its placed position, causing the element to become damaged. There is a problem in that the temperature distribution changes and the electromotive force obtained due to the difference in oxygen concentration fluctuates.Objective of the InventionThe present invention is intended to solve these conventional drawbacks, and to improve the resistance heating element. The purpose is to prevent the temperature distribution of the oxygen ion conductive solid electrolyte from changing by preventing the resistance heating element from shifting due to heat generation.
発明の構成 。Structure of the invention.
この目的を達成するために本発明においては、検出素子
の外周部に、石英ガラス部材の周囲に抵抗発熱体を巻（
−Ｊけるとともにセラミック材によりコーティングして
構成した発熱体を配設したものであり、抵抗発熱体は石
英ガラス部材、とセラミック利により保持されることと
なり、配置した位置がずれてしまうことがなくなる。In order to achieve this objective, in the present invention, a resistance heating element is wound around a quartz glass member around the outer periphery of the detection element.
-The heating element is coated with a ceramic material and the resistance heating element is held by the quartz glass member and the ceramic material, preventing the placed position from shifting. .
実施例の説明 以下、本発明の一実施例を示す図面を用いて説明する。Description of examples DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
図において、１は円筒状の検出素子でこの検出素子１は
、円筒状の酸素イオン伝導性固体電解質の素体２の内面
および外面に相対するように白金などの基準用電極３お
よび測定用電極４を形成することにより構成されている
。この検出素子１の素体２の両端開口部は、素体２の内
部空間に基準濃度の酸素を導入するだめのパイプ部５ａ
、６ａを有するキャップ状のステンレス材よりなる外部
端子６，６によって閉塞され、また外部端子５には前記
電極３が接続されるとともに、前記外部端子６には電極
４が接続されている。In the figure, 1 is a cylindrical detection element, and this detection element 1 has a reference electrode 3 made of platinum or the like and a measurement electrode facing the inner and outer surfaces of a cylindrical oxygen ion conductive solid electrolyte body 2. 4. Openings at both ends of the element body 2 of the detection element 1 are pipe portions 5a for introducing oxygen at a reference concentration into the internal space of the element body 2.
, 6a and are closed by cap-shaped external terminals 6, 6 made of stainless steel material, and the electrode 3 is connected to the external terminal 5, and the electrode 4 is connected to the external terminal 6.
７は前記検出素子１の外周部に配設した発熱体で、この
発熱体７は、円筒状の石英ガラス部桐８の外周面にニク
ロム線などの抵抗発熱体９を巻付け、そしてその抵抗発
熱体９をセラミック材１０によリコーティングすること
により構成さ汎ている。Reference numeral 7 denotes a heating element disposed on the outer periphery of the detection element 1. This heating element 7 is made by winding a resistance heating element 9 such as a nichrome wire around the outer periphery of a cylindrical quartz glass part paulownia 8, and It is generally constructed by recoating the heating element 9 with a ceramic material 10.
この発熱体７の具体例を説明すると、石英ガラス部拐８
の外周面にニクロム、タンタルなどの抵抗発熱体９を螺
旋状に巻付け、そしてアルミナ、シリカを主成分とする
ペースト状のセラミック材９を塗布、乾燥させることに
より発熱体アとする。To explain a specific example of this heating element 7, the quartz glass part 8
A resistance heating element 9 made of nichrome, tantalum, or the like is spirally wound around the outer circumferential surface of the heating element A, and a paste-like ceramic material 9 containing alumina or silica as a main component is applied and dried to form the heating element A.
発明の効果
以上のように本発明の酸素濃度検出器によれば、抵抗発
熱体のム熱の際に、抵抗発熱体が膨張して １
・、・□′ 温度分布が変化することがなくなり、出力
市川の変動をなくすことができる。Effects of the Invention As described above, according to the oxygen concentration detector of the present invention, when the resistance heating element is exposed to heat, the resistance heating element expands.
・,・□′ Temperature distribution does not change, and fluctuations in output power can be eliminated.
図は本発明の一実施例による酸素濃度検出器を示す断面
図である。
１・・・検出素子、２・・・・・素体、３，４・・・電
極、５．６・・外部端子、７ ・・発熱体、８・・・石
英ガラス部利、９・・・抵抗発熱体、１０・・・セラミ
ック利。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名ｑ／
θ ７The figure is a sectional view showing an oxygen concentration detector according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Detection element, 2... Element body, 3, 4... Electrode, 5.6... External terminal, 7... Heating element, 8... Quartz glass part, 9...・Resistance heating element, 10...ceramic material. Name of agent: Patent attorney Toshio Nakao and 1 other personq/
θ 7
Claims (1)
準用電極および測定用電極を形成して検出素子を構成す
るとともに、その検出素子の前記基準用電極側に基準濃
度の酸素が接し前記測定用電極１１１ｊに被測定用の大
気が接するように構成し、かつ前記検出素子の外周部に
、石英ガラス部材の周囲に抵抗発熱体を巻付けるととも
にセラミック材によりコーティングして構成した発熱体
を配設した酸素濃度検出器。A detection element is constructed by forming a reference electrode and a measurement electrode so as to face the element body of the oxygen ion conductive solid electrolyte, and oxygen at a reference concentration is brought into contact with the reference electrode side of the detection element to perform the measurement. The measuring electrode 111j is configured to be in contact with the atmosphere to be measured, and a heating element is arranged around the outer periphery of the detection element, and the heating element is formed by wrapping a resistive heating element around a quartz glass member and coating it with a ceramic material. Oxygen concentration detector installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57105913A JPS58223055A (en) | 1982-06-18 | 1982-06-18 | Oxygen concentration detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57105913A JPS58223055A (en) | 1982-06-18 | 1982-06-18 | Oxygen concentration detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58223055A true JPS58223055A (en) | 1983-12-24 |
Family
ID=14420097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57105913A Pending JPS58223055A (en) | 1982-06-18 | 1982-06-18 | Oxygen concentration detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58223055A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008151709A (en) * | 2006-12-19 | 2008-07-03 | Canon Machinery Inc | Oxygen sensor |
| JP2008185341A (en) * | 2007-01-26 | 2008-08-14 | Canon Machinery Inc | Oxygen sensor |
| JP2021071391A (en) * | 2019-10-31 | 2021-05-06 | 東京窯業株式会社 | Solid electrolyte sensor |
-
1982
- 1982-06-18 JP JP57105913A patent/JPS58223055A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008151709A (en) * | 2006-12-19 | 2008-07-03 | Canon Machinery Inc | Oxygen sensor |
| JP2008185341A (en) * | 2007-01-26 | 2008-08-14 | Canon Machinery Inc | Oxygen sensor |
| JP2021071391A (en) * | 2019-10-31 | 2021-05-06 | 東京窯業株式会社 | Solid electrolyte sensor |
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