Variable frequency oxygen sensor

An oxygen sensor and sensitive electrode technology, applied in the field of variable frequency oxygen sensors, can solve the problems of easy cracking and slow start of the variable frequency oxygen sensor, and achieve the effects of avoiding cracking, shortening the cold start time, and accelerating the cold start speed.

Active Publication Date: 2021-08-03
安徽中科国瓷新型元器件有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to propose a frequency conversion oxygen sensor, aiming to solve the technical problems of slow startup and easy cracking of the frequency conversion oxygen sensor in the prior art

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a variable frequency oxygen sensor. A first solid electrolyte layer and a cavity layer define a first closed cavity, a second solid electrolyte layer and the cavity layer define a second closed cavity, the cavity layer is provided with a closed inner cavity located between the first closed cavity and the second closed cavity, the closed inner cavity is isolated from a to-be-detected atmosphere through the first solid electrolyte layer, the cavity layer and the second solid electrolyte layer, an outer electrode is arranged on the side, which faces a sensitive electrode pin layer, of the first solid electrolyte layer, a first common electrode is arranged on the side, which faces the cavity layer, of the first solid electrolyte layer, the first common electrode is accommodated in the first closed cavity, a second common electrode is arranged on the side, which faces the cavity layer, of the second solid electrolyte layer, an inner electrode is arranged on the side, which faces a blocking layer, of the second solid electrolyte layer, and the second common electrode is accommodated in the second closed cavity. According to the variable-frequency oxygen sensor disclosed by the invention, the cold start time is shortened, and the condition that the closed inner cavity is cracked due to high and low temperature circulation can be avoided.

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 to remove environmental restrictions and measurement errors caused by the reference gas chamber. Since the current variable frequency oxygen sensor needs to be surrounded by an external heater to heat the variable frequency oxygen sensor during operation, the warm-up time to enter the working state is usually more than 100 seconds, and the high temperature glass used in the existing variable frequency oxygen sensor The glaze is easy to crack during long-term high and low temperature cycle use, which leads to the failure of the airtight chamber in the frequency conversion oxygen sensor, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/409G01N27/406G01N27/407
CPCG01N27/4067G01N27/409G01N27/4077
Inventor 占忠亮仝永成陈初升
Owner 安徽中科国瓷新型元器件有限公司
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