CN205607916U - Electrochemistry formaldehyde sensor - Google Patents
Electrochemistry formaldehyde sensor Download PDFInfo
- Publication number
- CN205607916U CN205607916U CN201620241579.5U CN201620241579U CN205607916U CN 205607916 U CN205607916 U CN 205607916U CN 201620241579 U CN201620241579 U CN 201620241579U CN 205607916 U CN205607916 U CN 205607916U
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- sealing ring
- catalytic layer
- shell
- inner chamber
- formaldehyde sensor
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Abstract
The utility model discloses an electrochemistry formaldehyde sensor, including shell, first catalysis layer, electrolyte membrane, second catalysis layer, stock solution membrane, positive pole, negative pole, first sealing ring and second sealing ring, closely arrange in the inner chamber of shell from bottom to top in proper order on stock solution membrane, second catalysis layer, electrolyte membrane and first catalysis layer, and first sealing ring of rethread and second seal up the tight stock solution membrane of ring grip, second catalysis layer, electrolyte membrane and first catalysis layer, respectively and between shell clearance of the closed positive pole of seal structure that constitutes of first sealing ring and second sealing ring and negative pole simultaneously. This stability of having guaranteed output voltage has improved the accuracy of testing result.
Description
Technical field
This utility model relates to sensor technology, specifically a kind of electrochemistry formaldehyde sensor.
Background technology
Electrochemistry formaldehyde sensor generally detects the components and parts of formaldehyde in air content.It passes through electrochemistry
Principle, is converted into current signal concentration of formaldehyde.Current formaldehyde sensor occurs as follows when detecting formaldehyde
Electrochemical reaction:
Anode (working electrode): HCHO+H2O→CO2+4H++4e-；
Negative electrode (to electrode): O2+4H++4e-→2H2O；
Whole reaction equation is: HCHO+O2→CO2+H2O。
Though current electrochemistry formaldehyde sensor can realize detecting formaldehyde in air content, but during its detection
The output signal of electrochemical sensor is unstable, and this causes the accuracy of testing result the highest.
Utility model content
The purpose of this utility model is the deficiency overcoming above prior art to exist, it is provided that a kind of structure
Simply, the electrochemistry formaldehyde sensor that testing result accuracy is high.
In order to achieve the above object, this utility model is by the following technical solutions: a kind of electrochemistry formaldehyde passes
Sensor, including shell, the first Catalytic Layer, dielectric film, the second Catalytic Layer, liquid storage film, anode, the moon
Pole, the first sealing ring and the second sealing ring；Described shell is provided with inner chamber, the top board of described shell be provided with
The air inlet that inner chamber communicates；Described liquid storage film, the second Catalytic Layer, dielectric film and the first Catalytic Layer are in interior
Chamber close-packed arrays the most successively；Described anode from the upper end of shell insert inner chamber, and described anode with
The above connection of the first Catalytic Layer；Described negative electrode inserts inner chamber, and described negative electrode and the from the lower end of shell
Connection below two Catalytic Layer；Described first sealing ring is installed on the upper end of inner chamber, and inserts the sun of inner chamber
The two ends of pole part are placed in the first sealing ring；Described second sealing ring is installed on the lower end of inner chamber, and
The two ends of the cathode portion inserting inner chamber are placed in the second sealing ring, and described liquid storage film, the second catalysis
Layer, dielectric film and the first Catalytic Layer are respectively positioned between the first sealing ring and the second sealing ring.
Preferably, the inner side of described first sealing ring is provided with compressed part, is adjacent to below described compressed part
Above one Catalytic Layer；The described lower end of the first sealing ring is adjacent to mutually with the above of dielectric film；Described
One Catalytic Layer is positioned at the first sealing ring.
Preferably, described first sealing ring is integrally formed with compressed part.
Preferably, described second Catalytic Layer and liquid storage film are respectively positioned in the second sealing ring, and described second seals
The lower end of ring sets gasket part, and this gasket part is tightly connected with the lower ending opening of the second sealing ring.
Preferably, described second sealing ring is integrally formed with gasket part.
Preferably, described electrochemistry formaldehyde sensor also includes the 3rd sealing ring and the 4th sealing ring, institute
State the 3rd seal ring set and be connected to anode, and the described end face of the 3rd sealing ring is adjacent to mutually with the outside of shell；
Described 4th seal ring set is connected to negative electrode, and the described end face of the 4th sealing ring is adjacent to mutually with the outside of shell.
Preferably, the material of described anode and negative electrode is platinum.
Preferably, described first sealing ring, the second sealing ring, the 3rd sealing ring and the material of the 4th sealing ring
Material is PUR.
Preferably, having diffusion region between described first Catalytic Layer and the upper inwall of shell, this diffusion region sets
There is ventilated membrane.
This utility model, relative to prior art, has such advantages as and effect:
1, this electrochemistry formaldehyde sensor by the first sealing ring and the second sealing ring clamp the first Catalytic Layer,
Dielectric film, the second Catalytic Layer and liquid storage film, this ensures the first Catalytic Layer, dielectric film, the second catalysis
Layer and liquid storage film compactness successively, i.e. improve stablizing of stepped construction, therefore two electrodes (anode and negative electrode)
High with stability during corresponding material, it is ensured that the stability of output voltage, improve testing result
Accuracy.
2, this electrochemistry formaldehyde sensor is mainly by shell, the first Catalytic Layer, dielectric film, the second catalysis
Layer, liquid storage film, anode, negative electrode, the first sealing ring and the second sealing ring are constituted, and it utilizes the first sealing
Gap between ring seal anode and shell, the gap between the second sealing ring closing negative electrode and shell, this
Good sealing structure can ensure the stability of chemical reaction in shell, thus can ensure the steady of output voltage
Qualitative, improve the accuracy of testing result.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model a kind of electrochemistry formaldehyde sensor.
Detailed description of the invention
For ease of it will be appreciated by those skilled in the art that below in conjunction with the accompanying drawings and embodiment this utility model made into
The detailed description of one step.
As it is shown in figure 1, this electrochemistry formaldehyde sensor, including shell the 1, first Catalytic Layer 2, electrolyte
Film the 3, second Catalytic Layer 4, liquid storage film 5, anode 6, negative electrode the 7, first sealing ring 8 and the second sealing ring
9；Described shell 1 is provided with inner chamber, and the top board of described shell 1 is provided with the air inlet 10 communicated with inner chamber；Institute
State liquid storage film the 5, second Catalytic Layer 4, dielectric film 3 and the first Catalytic Layer 2 in inner chamber the most successively
Close-packed arrays；Described anode 6 inserts inner chamber from the upper end of shell 1, and described anode 6 and first is catalyzed
The above connection of layer 2；Described negative electrode 7 inserts inner chamber, and described negative electrode 7 and the from the lower end of shell 1
Connection below two Catalytic Layer 4；Described first sealing ring 8 is installed on the upper end of inner chamber, and inserts inner chamber
The two ends of anode 6 part be placed in the first sealing ring 8；Described second sealing ring 9 is installed on inner chamber
Lower end, and the two ends of negative electrode 7 part inserting inner chamber are placed in the second sealing ring 9, and described storage
Liquid film the 5, second Catalytic Layer 4, dielectric film 3 and the first Catalytic Layer 2 are respectively positioned on the first sealing ring 8 and
Between two sealing rings 9.Concrete, this utilizes the first sealing ring 8 and the second sealing ring 9 to compress first and urge
Change layer 2, dielectric film the 3, second Catalytic Layer 4 and liquid storage film 5, thus ensure that two electrodes (anode and
Negative electrode) stability that contacts with respective material, to ensure the stability of output voltage.And first sealing ring 8
And second sealing ring 9 constitute sealing structure enclose between two electrodes (anode and negative electrode) and shell 1
Gap so that this electrochemistry formaldehyde sensor has preferable sealing, be further ensured that output electricity
The stability of pressure, thus improve the accuracy of testing result.First sealing ring 8 and the second sealing ring 9
All being made by heat pressing process or hot injection technique, this realizes better seal structure, outside the most also ensureing
In shell 1, each several part contact stablizes, to improve the stability of output voltage, it is ensured that the standard of testing result
Really property.
The inner side of described first sealing ring 8 is provided with compressed part 11, is adjacent to first below described compressed part 11
Above Catalytic Layer 2；The lower end of described first sealing ring 8 is adjacent to mutually with the above of dielectric film 3；Institute
State the first Catalytic Layer 2 and be positioned at the first sealing ring 8.Described first sealing ring 8 becomes with compressed part 11 one
Shape.Compressed part 11 ensure that the effect of compression, and integral type arranges convenient processing simultaneously, also ensures close simultaneously
Envelope effect.
Described second Catalytic Layer 4 and liquid storage film 5 are respectively positioned in the second sealing ring 9, described second sealing ring 9
Lower end set gasket part 12, this gasket part 12 is tightly connected with the lower ending opening of the second sealing ring 9.Described
Second sealing ring 9 is integrally formed with gasket part 12.The convenient processing of this structure, and good sealing effect.
Described electrochemistry formaldehyde sensor also includes the 3rd sealing ring 13 and the 4th sealing ring 14, described
Three sealing rings 13 are socketed on anode 6, and the described end face of the 3rd sealing ring 13 is affixed with the outside of shell 1
Tightly；Described 4th sealing ring 14 is socketed on negative electrode 7, and the end face of described 4th sealing ring 14 and shell 1
Outside be adjacent to mutually.This structure can be further ensured that the sealing effectiveness of this electrochemistry formaldehyde sensor, it is ensured that
The stability of output voltage, further increases the accuracy of testing result.
The material of described anode 6 and negative electrode 7 is platinum.Platinum has good electric conductivity, and this ensures
The functional reliability of this electrochemical sensor.
Described first sealing ring the 8, second sealing ring the 9, the 3rd sealing ring 13 and the material of the 4th sealing ring 14
Material is PUR.PUR very convenient can carry out heat pressing process or hot injection technique, facilitates first close
Seal ring the 8, second sealing ring the 9, the 3rd sealing ring 13 and the manufacture of the 4th sealing ring 14.
Having diffusion region 15 between described first Catalytic Layer 2 and the upper inwall of shell 1, this diffusion region 15 sets
There is ventilated membrane.Ventilated membrane has elicitation effect, improves the uniformity of gas diffusion.
Above-mentioned detailed description of the invention is preferred embodiment of the present utility model, can not enter this utility model
Row limits, other any change made without departing from the technical solution of the utility model or other equivalence
Substitute mode, within being included in protection domain of the present utility model.
Claims (9)
1. an electrochemistry formaldehyde sensor, it is characterised in that: include shell, the first Catalytic Layer, dielectric film, the second Catalytic Layer, liquid storage film, anode, negative electrode, the first sealing ring and the second sealing ring；Described shell is provided with inner chamber, and the top board of described shell is provided with the air inlet communicated with inner chamber；Described liquid storage film, the second Catalytic Layer, dielectric film and the first Catalytic Layer are in inner chamber the most successively close-packed arrays；Described anode inserts inner chamber, and described anode and the above connection of the first Catalytic Layer from the upper end of shell；Described negative electrode inserts connection below inner chamber, and described negative electrode and the second Catalytic Layer from the lower end of shell；Described first sealing ring is installed on the upper end of inner chamber, and the two ends inserting the anode part of inner chamber are placed in the first sealing ring；Described second sealing ring is installed on the lower end of inner chamber, and the two ends inserting the cathode portion of inner chamber are placed in the second sealing ring, and described liquid storage film, the second Catalytic Layer, dielectric film and the first Catalytic Layer are respectively positioned between the first sealing ring and the second sealing ring.
Electrochemistry formaldehyde sensor the most according to claim 1, it is characterised in that: the inner side of described first sealing ring is provided with compressed part, is adjacent to above the first Catalytic Layer below described compressed part；The described lower end of the first sealing ring is adjacent to mutually with the above of dielectric film；Described first Catalytic Layer is positioned at the first sealing ring.
Electrochemistry formaldehyde sensor the most according to claim 2, it is characterised in that: described first sealing ring is integrally formed with compressed part.
Electrochemistry formaldehyde sensor the most according to claim 1, it is characterised in that: described second Catalytic Layer and liquid storage film are respectively positioned in the second sealing ring, and the lower end of described second sealing ring sets gasket part, and this gasket part is tightly connected with the lower ending opening of the second sealing ring.
Electrochemistry formaldehyde sensor the most according to claim 4, it is characterised in that: described second sealing ring is integrally formed with gasket part.
Electrochemistry formaldehyde sensor the most according to claim 1, it is characterised in that: also include that the 3rd sealing ring and the 4th sealing ring, described 3rd seal ring set are connected to anode, and the described end face of the 3rd sealing ring is adjacent to mutually with the outside of shell；Described 4th seal ring set is connected to negative electrode, and the described end face of the 4th sealing ring is adjacent to mutually with the outside of shell.
Electrochemistry formaldehyde sensor the most according to claim 1, it is characterised in that: the material of described anode and negative electrode is platinum.
Electrochemistry formaldehyde sensor the most according to claim 6, it is characterised in that: the material of described first sealing ring, the second sealing ring, the 3rd sealing ring and the 4th sealing ring is PUR.
Electrochemistry formaldehyde sensor the most according to claim 1, it is characterised in that: having diffusion region between described first Catalytic Layer and the upper inwall of shell, this diffusion region is provided with ventilated membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241579.5U CN205607916U (en) | 2016-03-25 | 2016-03-25 | Electrochemistry formaldehyde sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241579.5U CN205607916U (en) | 2016-03-25 | 2016-03-25 | Electrochemistry formaldehyde sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205607916U true CN205607916U (en) | 2016-09-28 |
Family
ID=56964770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620241579.5U Active CN205607916U (en) | 2016-03-25 | 2016-03-25 | Electrochemistry formaldehyde sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205607916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770594A (en) * | 2017-03-17 | 2017-05-31 | 张银虎 | Electrochemical sensor |
-
2016
- 2016-03-25 CN CN201620241579.5U patent/CN205607916U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770594A (en) * | 2017-03-17 | 2017-05-31 | 张银虎 | Electrochemical sensor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |