CN107796860A - A kind of current type solid electrolyte oxygen analyte sensors - Google Patents
A kind of current type solid electrolyte oxygen analyte sensors Download PDFInfo
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- CN107796860A CN107796860A CN201610756294.XA CN201610756294A CN107796860A CN 107796860 A CN107796860 A CN 107796860A CN 201610756294 A CN201610756294 A CN 201610756294A CN 107796860 A CN107796860 A CN 107796860A
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- Prior art keywords
- layer
- solid electrolyte
- current type
- analyte sensors
- cathode sheets
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000001301 oxygen Substances 0.000 title claims abstract description 41
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 41
- 239000007784 solid electrolyte Substances 0.000 title claims abstract description 31
- 239000012491 analyte Substances 0.000 title claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 239000011533 mixed conductor Substances 0.000 claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 22
- 230000004888 barrier function Effects 0.000 claims abstract description 18
- 239000003792 electrolyte Substances 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 238000005868 electrolysis reaction Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-O oxonium Chemical compound [OH3+] XLYOFNOQVPJJNP-UHFFFAOYSA-O 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 11
- 238000009792 diffusion process Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 4
- -1 oxonium ion Chemical class 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000036647 reaction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011532 electronic conductor Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/409—Oxygen concentration cells
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
The invention discloses a kind of current type solid electrolyte oxygen analyte sensors of sensor of chemical gas technical field,Including cathode sheets,The bottom of the cathode sheets is provided with ceramic heating device,Electrolyte barrier layer is provided with the top of the cathode sheets,Anode strip is provided with the top of the electrolyte barrier layer,Electrode wires are provided with the right side of the right side of the cathode sheets and anode strip,The present invention is simple in construction,Diffusion barrier layer is formed by porous layer and mixed conductor layer,And combined closely with solid electrolyte layer,So that the response time of sensor greatly shortens,And heated using ceramic heating device,Ensure that hot-face temperature is uniform,And whole sensor miniaturization,With portability,Susceptibility is high,It is in light weight,Low cost,It can detect " breathing to breathing ",Oxygen analysis even in a single breathing,With very strong practicality,Can be with large batch of production and application.
Description
Technical field
The present invention relates to sensor of chemical gas technical field, specially a kind of current type solid electrolyte oxygen analysis sensing
Device.
Background technology
Oxygen sensor in use for car is one of engine control system important component, by lambda sensor to automobile engine
Air-fuel ratio is adjusted, and controls the combustion process in engine, can not only reduce the discharge of pollutant, can also improve fuel
Efficiency of combustion.
At present using triple mode catalytic converter to reduce on the engine of exhaust pollution, lambda sensor is essential member
Part.Automotive oxygen sensor is sensing element crucial in BBG control system, is control motor vehicle exhaust emission, reduces vapour
Car environmental pollution, the vital part for improving automobile engine fuel oil burning quality, and lambda sensor is installed in engine
On blast pipe.What is be commonly used is zirconium oxide concentration cell type lambda sensor, but this sensor can only make Combustion System
Near chemically correct fuel.If controlling lean burn area burning of the engine under oxygen-enriched state, can not only more effectively reduce
The discharge of pollutant, and efficiency of combustion can be further improved, due to the signal of concentration cell type lambda sensor and point of oxygen
Logarithmic relationship is pressed into, therefore in whole lean burn area, signal intensity very little is not sensitive enough.
Existing lambda sensor susceptibility is inadequate, response time length, not enough miniaturization, without portability, particularly exists
Medical science can not be effectively detected and analyzed in the oxygen in human body respiration gas.
The content of the invention
It is an object of the invention to provide one kind to be related to sensor of chemical gas, to solve what is proposed in above-mentioned background technology
Lambda sensor susceptibility is inadequate, response time length, not enough miniaturization, without portability, particularly to people in medical science use
The problem of oxygen in body breathing gas can not be effectively detected and analyzed.
To achieve the above object, the present invention provides following technical scheme：A kind of current type solid electrolyte oxygen analysis sensing
Device, including cathode sheets, the bottom of the cathode sheets are provided with ceramic heating device, electrolyte are provided with the top of the cathode sheets
Barrier layer, anode strip is provided with the top of the electrolyte barrier layer, is all provided with the right side of the right side of the cathode sheets and anode strip
Electrode wires are equipped with, the right-hand member of the electrode wires is provided with joint.
Preferably, the ceramic heating device includes ceramic matrix layer, and heating is inlaid with the top of the ceramic matrix layer
Component, glaze layer is provided with the top of the heating component, and glaze layer is arranged on the top of ceramic matrix layer.
Preferably, the electrolyte barrier layer includes solid electrolyte layer, and the bottom of the solid electrolyte layer sets
There is porous layer, the inner chamber of the porous layer is provided with mixed conductor layer.
Preferably, the cathode sheets and anode strip are platinum electrode piece.
Preferably, the heating component includes two groups of heating coils, and two groups of heating coils are symmetrically set, and two
One end of the group heating coil is connected with each other, and the other end of the helical heating pipe is respectively connected with wire, the wire
The other end is provided with terminal.
Preferably, the mixed conductor layer is oxonium ion-electron mixed conductor layer.
Preferably, the solid electrolyte layer is YSZ solid electrolytes.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is simple in construction, easy to use, ingenious in design, makes
With reliable, there is very strong practicality and novelty, diffusion barrier layer is formed by porous layer and mixed conductor layer, and with solid electricity
Solution matter layer is combined closely so that the response time of sensor is greatly shortened, and susceptibility is significantly lifted so that the efficiency of sensor
It is higher, and heated using ceramic heating device, it is ensured that hot-face temperature is uniform, eliminates the focus and cold spot of equipment, has section
The advantages that saving the short energy, heat time, long lifespan, good heat insulating, mechanical performance strong, corrosion-resistant, diamagnetic field, and entirely pass
Sensor minimizes, and has portability, and susceptibility is high, in light weight, low cost, can detect " breathing to breathing ", or even at one
Oxygen analysis in single breathing, there is very strong practicality, can be with large batch of production and application.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the structural representation of ceramic heating device of the present invention；
Fig. 3 is electrolyte barrier layer structural representation of the present invention；
Fig. 4 is heating component schematic diagram of the present invention；
Fig. 5 is Structure explosion diagram of the present invention.
In figure：1 ceramic heating device, 11 ceramic matrix layers, 12 heating components, 121 heating coils, 122 are led
Line, 123 terminals, 13 glaze layers, 2 cathode sheets, 3 electrolyte barrier layers, 31 solid electrolyte layers, 32 porous layers, 33
Mixed conductor layer, 4 anode strips, 5 electrode wires, 6 joints.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1-5 are referred to, the present invention provides a kind of technical scheme：A kind of current type solid electrolyte oxygen analyte sensors,
Including cathode sheets 2, the bottom of the cathode sheets 2 is provided with ceramic heating device 1, and the top of the cathode sheets 2 is provided with electrolysis
Matter barrier layer 3, the top of the electrolyte barrier layer 3 are provided with anode strip 4, the right side of the cathode sheets 2 and the right side of anode strip 4
Side is provided with electrode wires 5, and the right-hand member of the electrode wires 5 is provided with joint 6.
Wherein, the ceramic heating device 1 includes ceramic matrix layer 11, convenient to install heating component 12, the ceramic base
The top of body layer 11 is inlaid with heating component 12, and the top of the heating component 12 is provided with glaze layer 13, and glaze layer 13 is arranged on
The top of ceramic matrix layer 11, heating properties are improved, and heating component 12 is covered, prevent heating component 12 to be exposed to air
In so that heating effect is bad, and the electrolyte barrier layer 3 includes solid electrolyte layer 31, is conveniently electrolysed so that passes
Sensor is able to work, and the bottom of the solid electrolyte layer 31 is provided with porous layer 32, and the inner chamber of the porous layer 32 is provided with
Mixed conductor layer 33, porous layer 32 and mixed conductor layer 33 form diffusion barrier layer, can hinder oxygen by being convenient for measuring out
The concentration of oxygen, the cathode sheets 2 and anode strip 4 are platinum electrode piece, convenient to carry out cell reaction, while it is interelectrode to measure two
Electric current, so as to according to the linear relationship of electric current and oxygen concentration, measure the concentration of oxygen, the heating component 12 includes two groups of heating spiral shells
Coil 121, convenient heating, and two groups of heating coils 121 are symmetrically set, one end of heating coil 121 described in two groups
It is connected with each other, the other end of the helical heating pipe 121 is respectively connected with wire 122, convenient to be powered to helical heating pipe 121, institute
The other end for stating wire 122 is provided with terminal 123, and convenient to connect power supply, the mixed conductor layer 33 is oxonium ion-electricity
Sub- mixed conductor layer, facilitates oxygen to be migrated by Lacking oxygen, and diffusion ratio of the oxygen in mixed conductor layer 33 is slow in the gas phase
It is more, one layer of mixed conductor layer 33 is covered in cathode sheets 2, can effectively limit the speed of oxygen supply to cathode sheets 2, turns into oxygen biography
The speed limit link passed, so as to make the output electric signal of sensor and ambient oxygen partial pressure linear, and in sensor
During use, the problem of sensor blocks will not occur, the solid electrolyte layer 31 is YSZ solid electrolytes, is conveniently entered
Row electrolysis.
Operation principle：In use, heated using ceramic heating device 1, it can be ensured that hot-face temperature is uniform, eliminates and sets
Standby focus and cold spot, have short the saving energy, heat time, long lifespan, good heat insulating, mechanical performance strong, corrosion-resistant, anti-
The advantages that magnetic field, wherein terminal 123, connect the both positive and negative polarity of power supply respectively, and the guiding line 122 of terminal 123 conveys electric energy,
Wire 122 conveys electric energy to heating coil 121, and heating coil 121 gives off heat, and transmits heat by glaze layer 13, makes
Heat is obtained to more uniformly spread；Meanwhile cathode sheets 2 connect the negative pole of power supply, anode strip 4 connects the positive pole of power supply, passes through electrode
Line 5 and joint 6 are completed, and voltage and temperature keep constant, and temperature is higher than 450 degrees Celsius, cell reaction then can occur, by more
The diffusion barrier layer that aperture layer 32 and mixed conductor layer 33 form, there is good electric conductivity, i.e., at the top and bottom of diffusion barrier layer
Between electrical potential difference very little, voltage is actually to be applied to the top and bottom of solid electrolyte layer 31 so that solid electrolyte
Layer 31 and cathode sheets 2 form a pump oxygen cell, porous layer 32, mixed conductor layer 33 and solid electrolyte layer 31 with anode strip 4
The oxygen of contact position receives electronics, forms negative divalence oxonium ion, and under the promotion of potential gradient, negative divalence oxonium ion faces south pole piece 4
Migration, oxygen molecule is formed after electric discharge, because porous layer 32, mixed conductor layer 33 and the oxygen of the contact position of solid electrolyte layer 31 is not by
It is disconnected to be extracted at anode strip 4, and become oxygen molecule and enter outside atmosphere, then porous layer 32, mixed conductor layer 33 and solid electricity
The oxygen of the contact position of solution matter layer 31 will be reduced constantly, then porous layer 32, mixed conductor layer 33 bottom and top between can go out
An existing difference in oxygen concentration, under oxygen concentration gradient promotion, porous layer 32, the bottom oxygen molecule of mixed conductor layer 33 obtain electronics,
Porous layer 32, mixed conductor layer 33 and the contact position of solid electrolyte layer 31 are moved in the form of bearing divalence oxonium ion, due to
Mixed conductor layer 33 is good oxonium ion-electronic conductor, and negative migration of the divalence oxonium ion in mixed conductor layer 33 is entirely
Carried out under the driving of oxygen concentration gradient；According to the linear relationship between oxygen concentration and electric current, so as to by measuring cathode sheets 2
Electric current between anode strip 4 can measure the concentration of oxygen.
The size of the sensor is about 20x3.5x0.5mm, miniaturization, has portability, susceptibility is high, in light weight, cost
It is low, it can detect " breathing to breathing ", or even the oxygen analysis in a single breathing, there is very strong practicality, can be with
Large batch of production and application.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of current type solid electrolyte oxygen analyte sensors, including cathode sheets (2), it is characterised in that：The cathode sheets (2)
Bottom be provided with ceramic heating device (1), be provided with electrolyte barrier layer (3), the electrolysis at the top of the cathode sheets (2)
Anode strip (4) is provided with the top of matter barrier layer (3), is provided with the right side of the right side of the cathode sheets (2) and anode strip (4)
Electrode wires (5), the right-hand member of the electrode wires (5) are provided with joint (6).
A kind of 2. current type solid electrolyte oxygen analyte sensors according to claim 1, it is characterised in that：The ceramics
Heater (1) includes ceramic matrix layer (11), and heating component (12) is inlaid with the top of the ceramic matrix layer (11), described
Glaze layer (13) is provided with the top of heating component (12), and glaze layer (13) is arranged on the top of ceramic matrix layer (11).
A kind of 3. current type solid electrolyte oxygen analyte sensors according to claim 1, it is characterised in that：The electrolysis
Matter barrier layer (3) includes solid electrolyte layer (31), and the bottom of the solid electrolyte layer (31) is provided with porous layer (32),
The inner chamber of the porous layer (32) is provided with mixed conductor layer (33).
A kind of 4. current type solid electrolyte oxygen analyte sensors according to claim 1, it is characterised in that：The negative electrode
Piece (2) and anode strip (4) are platinum electrode piece.
A kind of 5. current type solid electrolyte oxygen analyte sensors according to claim 2, it is characterised in that：The heating
Component (12) includes two groups of heating coils (121), and two groups of heating coils (121) are symmetrically set, and adds described in two groups
One end of hot helix tube (121) is connected with each other, and the other end of the helical heating pipe (121) is respectively connected with wire (122), described
The other end of wire (122) is provided with terminal (123).
A kind of 6. current type solid electrolyte oxygen analyte sensors according to claim 3, it is characterised in that：The mixing
Conductor layer (33) is oxonium ion-electron mixed conductor layer.
A kind of 7. current type solid electrolyte oxygen analyte sensors according to claim 3, it is characterised in that：The solid
Dielectric substrate (31) is YSZ solid electrolytes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610756294.XA CN107796860B (en) | 2016-08-29 | 2016-08-29 | Current type solid electrolyte oxygen analysis sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610756294.XA CN107796860B (en) | 2016-08-29 | 2016-08-29 | Current type solid electrolyte oxygen analysis sensor |
Publications (2)
| Publication Number | Publication Date |
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| CN107796860A true CN107796860A (en) | 2018-03-13 |
| CN107796860B CN107796860B (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11281611A (en) * | 1998-03-31 | 1999-10-15 | Osaka Gas Co Ltd | Limitation current type oxygen sensor and oxygen detection method |
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| CN104132986A (en) * | 2013-05-02 | 2014-11-05 | E+E电子有限责任公司 | Amperometric gas sensor |
| CN206387763U (en) * | 2016-08-29 | 2017-08-08 | 南京瀚雅健康科技有限公司 | A kind of current type solid electrolyte oxygen analyte sensors |
-
2016
- 2016-08-29 CN CN201610756294.XA patent/CN107796860B/en active Active
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|---|---|---|---|---|
| JPH11281611A (en) * | 1998-03-31 | 1999-10-15 | Osaka Gas Co Ltd | Limitation current type oxygen sensor and oxygen detection method |
| US20030006139A1 (en) * | 1999-02-03 | 2003-01-09 | Yoshiro Noda | Solid electrolyte containing insulating ceramic grains for gas sensor, and method for fabricating same |
| CN1278064A (en) * | 1999-06-22 | 2000-12-27 | 日本特殊陶业株式会社 | Gas sensor contg. ceramic solid electrolytes, and method for making same |
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| CN107796860B (en) | 2024-01-23 |
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Effective date of registration: 20231128 Address after: 210044 floor 4, No. 6 Kefeng Road, Jiangbei new area, Nanjing, Jiangsu Applicant after: Jiangsu Hanya Medical Technology Co.,Ltd. Address before: No. 86-1, Shuanggao Road, Gaochun Economic Development Zone, Nanjing, Jiangsu 210000 Applicant before: NANJING HIGHERMED HEALTH SCIENCE & TECHNOLOGY CO.,LTD. |
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