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Variable frequency oxygen sensor

A technology of oxygen sensor and heater, which is applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problem of heater short-circuit zirconia electrolyte breakdown, etc., to avoid breakdown due to insufficient insulation, simple structure, and insulation effect Good results

Pending Publication Date: 2022-04-22
INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0003] The main purpose of the present invention is to propose a frequency conversion oxygen sensor to solve the problems of short circuit of heater caused by failure of heater insulation and breakdown of zirconia electrolyte

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased from the market.

[0033] In addition, the meaning of "and / or" appearing in the whole text includes three parallel schemes, taking "A and / or B" as an example, including scheme A, scheme B, or schemes that both A and B satisfy. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contr...

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Abstract

The invention discloses a variable-frequency oxygen sensor which comprises a heating layer, a second gas channel layer, a second solid electrolyte layer, a cavity layer, a first solid electrolyte layer, a first gas channel layer and a sensitive electrode pin layer which are sequentially stacked, a first common electrode is arranged between the cavity layer and the first solid electrolyte layer, a second common electrode is arranged between the cavity layer and the second solid electrolyte layer, an outer electrode is arranged between the first solid electrolyte layer and the first gas channel layer, an inner electrode is arranged between the second solid electrolyte layer and the second gas channel layer, and a heater is arranged between the heating layer and the second gas channel layer. The heater is used for heating the outer electrode, the first common electrode, the second common electrode and the inner electrode; the heating layer, the second gas channel layer, the first gas channel layer and the sensitive electrode pin layer are made of aluminum oxide ceramics, the second solid electrolyte layer, the chamber layer and the first solid electrolyte layer are made of zirconium oxide ceramics, and yttrium oxide or scandium oxide is doped in the zirconium oxide ceramics. The frequency conversion oxygen sensor is good in insulation effect and cannot be broken down.

Description

technical field [0001] The invention relates to the technical field of gas sensors, in particular to a frequency conversion oxygen sensor. Background technique [0002] The frequency conversion oxygen sensor is an important type of gas sensor. The existing frequency conversion oxygen sensor is generally sealed with a platinum ring and high temperature glass glaze to form a closed chamber, and an external heater is required. Invention patent CN113203784A proposes a frequency conversion oxygen sensor that integrates sensitive electrodes and heaters. Although a thin layer of aluminum oxide insulation is added between the heater and the zirconia electrolyte, the porous structure of the thin layer is still prone to failure. However, there is a risk that the electrolyte layer of the variable frequency oxygen sensor will be broken down. Contents of the invention [0003] The main purpose of the present invention is to propose a frequency conversion oxygen sensor to solve the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/406G01N27/407G01N27/409
CPCG01N27/4067G01N27/4071G01N27/4073G01N27/4077G01N27/409
Inventor 占忠亮仝永成陈初升
Owner INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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