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Partial pressure type oxygen sensor with ceramic heater structure and preparation method thereof

A technology of ceramic heater and oxygen sensor, which is applied in the direction of heating element materials, ohmic resistance heating, ohmic resistance heating parts, etc., can solve the problems of poor resistance to mechanical shock and vibration, uneven distribution of temperature field, and low heat transfer efficiency

Active Publication Date: 2020-02-14
NO 49 INST CHINESE ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problems of low heat transfer efficiency, large heater volume, uneven temperature field distribution and poor resistance to mechanical shock and vibration of the existing partial pressure oxygen sensor, and provides a ceramic heater structure Partial pressure oxygen sensor and preparation method thereof

Method used

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  • Partial pressure type oxygen sensor with ceramic heater structure and preparation method thereof
  • Partial pressure type oxygen sensor with ceramic heater structure and preparation method thereof
  • Partial pressure type oxygen sensor with ceramic heater structure and preparation method thereof

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specific Embodiment approach 1

[0049] Specific implementation mode 1: This implementation mode is a partial pressure oxygen sensor with a ceramic heater structure, such as Figure 2-Figure 12 As shown, it is specifically composed of a core body 6 and a ceramic heater 5;

[0050] Such as Figure 11 As shown, the core body 6 is composed of two alumina filter discs 6-1, two zirconia solid electrolyte ceramic discs 6-2 and three platinum electrodes 6-3; the alumina filter disc 6 -1 and the zirconia solid electrolyte ceramic sheet 6-2 are both circular, and the diameters of the alumina filter sheet 6-1 and the zirconia solid electrolyte ceramic sheet 6-2 are equal;

[0051] Such as Figure 12 As shown, the platinum electrode 6-3 is composed of a platinum ring 6-3-2 and a platinum pin 6-3-1; one end of the platinum pin 6-3-1 is connected to the platinum ring 6-3 -2 fixed to form a lollipop structure; the platinum electrode 6-3 has an integrated structure;

[0052] The core body 6 is based on the alumina filte...

specific Embodiment approach 2

[0060] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the first arc-shaped heating wire 2-4, the second arc-shaped heating wire 3-4 and the third arc-shaped heating wire 4 The central angles of -1 are all 270°-330°. Others are the same as the first embodiment.

specific Embodiment approach 3

[0061] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the first ceramic substrate 1-6, the second ceramic substrate 2-5, the third ceramic substrate 3-5 and the fourth ceramic substrate 4- 4 are aluminum oxide substrates, and the thickness is 0.35 mm to 1 mm. Others are the same as the first embodiment.

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Abstract

A partial pressure type oxygen sensor with a ceramic heater structure and a preparation method thereof relate to a partial pressure type oxygen sensor and a preparation method thereof. The invention is intended to solve a technical problem that an existing partial pressure type oxygen sensor has low heat transfer efficiency, a large heater volume, uneven thermal field distribution, and poor resistance to mechanical shock and vibration. The partial pressure type oxygen sensor with the ceramic heater structure in the invention includes a core body and a ceramic heater. The core body is placed ina through hole in the middle of the ceramic heater, a pore between the core body and the ceramic heater is filled with high-temperature sealing glass, and finally, the partial pressure type oxygen sensor with the ceramic heater structure is obtained through sintering molding. The partial pressure type oxygen sensor in the invention can improve mechanical shock resistance strength of the sensor, improve heat conduction efficiency, shorten a cold start time, and improve uniformity of thermal field distribution, has the advantages of high accuracy and high reliability, and can be used for oxygenconcentration detection in environments such as a closed environment and an atmospheric environment.

Description

technical field [0001] The invention relates to a partial pressure oxygen sensor and a preparation method thereof. Background technique [0002] Oxygen sensor is a key component to ensure the control of oxygen concentration in a closed environment. As the working time in the closed environment changes, the oxygen concentration will change continuously. When the oxygen concentration decreases or increases, the oxygen supply system controls the amount of oxygen introduced into the closed environment to ensure that personnel can obtain sufficient oxygen. [0003] At present, the partial pressure oxygen sensor has some shortcomings and deficiencies, such as the side heating heating wire is made by winding process, it is difficult to control the winding gap, the consistency of the heating wire is poor, and the thermal stress deformation is easy to occur after long-term use, so that the temperature The field distribution changes. Side-heated heater structure (such as figure 1 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/409H05B3/26H05B3/14H05B3/02
CPCG01N27/409H05B3/141H05B3/265H05B3/02
Inventor 刘洋刘玺文吉延程振乾金鹏飞王永刚刘继江尹春岳周明军
Owner NO 49 INST CHINESE ELECTRONICS SCI & TECH GRP
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