CN206627399U - Particulate matter sensors - Google Patents
Particulate matter sensors Download PDFInfo
- Publication number
- CN206627399U CN206627399U CN201720384067.9U CN201720384067U CN206627399U CN 206627399 U CN206627399 U CN 206627399U CN 201720384067 U CN201720384067 U CN 201720384067U CN 206627399 U CN206627399 U CN 206627399U
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- China
- Prior art keywords
- ceramic ring
- shielding part
- frit
- particulate matter
- shell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model provides a kind of particulate matter sensors, including the high-field electrode, shielding part and shell set gradually from inside to outside, interior frit-sealed structure is provided between the high-field electrode and shielding part, outer frit-sealed structure is provided between the shielding part and shell, ceramic ring is equipped between the high-field electrode and shielding part at the interior frit-sealed structure both ends and between the shielding part and shell at the outer frit-sealed structure both ends.The utility model encapsulant selects frit, is solved using its sealing and insulating properties regardless of under weather environment humidity, particulate matter sensors can meet test request at any time.
Description
Technical field
Sensor technical field is the utility model is related to, more particularly to a kind of particulate matter sensors.
Background technology
Particulate matter sensors include high-field electrode, shielding part and external conductive casing, the assembling of high-field electrode and shielding part
What the sealing of the assembly between sealing and shielding part and external conductive casing was completed mainly by talcum powder.Particulate matter sensors
Performance test in, high-field electrode and shielding part between apply 1000V voltages, insulaion resistance >=800M Ω.High-field electrode with
Apply 1000V voltages, insulaion resistance >=500M Ω between external conductive casing.
Due to can be absorbed water by weather environment humidity and talcum powder point, the insulation between high-field electrode and shielding part
Insulaion resistance between resistance and high-field electrode and external conductive casing, will not reach parameter 800M Ω needed for test circuit and
500MΩ.Humidity is bigger, and insulaion resistance can be lower.
When in use, particulate matter sensors need the drying before work, and after about 30 minutes, the humidity in talcum powder can just expire
Foot requires, so that the insulaion resistance of talcum powder gradually rises up to the insulating resistance value needed in test circuit.Now particulate matter
Sensor could really start working.
Utility model content
Technical problem to be solved in the utility model is：In order to overcome deficiency of the prior art, the utility model carries
For a kind of particulate matter sensors, talcum powder is substituted using frit, humidity is not influenceed in by air, makes the use of sensor more
Add conveniently.
The utility model solves its technical problem technical scheme to be taken：A kind of particulate matter sensors, including by
It is interior to the high-field electrode set gradually outside, shielding part and shell, be provided with interior glass between the high-field electrode and shielding part
Expect sealing structure, outer frit-sealed structure, the interior frit-sealed structure two are provided between the shielding part and shell
Between the high-field electrode at end and shielding part and between the shielding part and shell at the outer frit-sealed structure both ends
Provided with ceramic ring.
Specifically, in order to improve sealing effectiveness, the ceramic ring at the interior frit-sealed structure both ends is the first ceramic ring
With the second ceramic ring, the height H1 of the first ceramic ring axial direction is more than the height H2 of the second ceramic ring axial direction, the outer glass
The sealing ring at material sealing structure both ends is the 3rd ceramic ring and the 4th ceramic ring, and the height H3 of the 3rd ceramic ring axial direction is more than
The height H4 of 4th ceramic ring axial direction.
Preferably, the high-field electrode and shielding part are made of metal, preferably stainless steel material.
Specifically, the shell is interior hexagonal seat.
Ceramic ring is toroidal insulation structure, and high-field electrode, shielding part and shell are metal material, therefore, are used
Ceramic ring carries out adjacent isolation between the two, improves reliability, in addition, the ceramic ring of ring-type is when carrying out parts assembling,
It may also function as assembling carrying and ensure the effect of axiality.
Replace original particulate matter sensors to be used for the talcum powder of interior external seal using frit, will be close to air inlet one first
The ceramic ring that the height of side is larger installs, and is then filled with powdered glass material, then again installs highly less ceramic ring, most
Afterwards, by high temperature sintering, powdered glass material is made to be sealed into solid-state.Humidity of the frit not in by air is influenceed, from without
Drying that will be before use 30 minutes.Sensor can just start working after loading onto.
After the completion of particulate matter sensors encapsulation, when applying 1000V voltages, between testing high voltage electrode and shielding part
Insulaion resistance is ∞, and the insulaion resistance between the high-field electrode and shell is ∞, and ∞ represents infinitely great.
The beneficial effects of the utility model are：A kind of particulate matter sensors provided by the utility model, encapsulant selection
Frit, solved using its sealing and insulating properties regardless of under weather environment humidity, particulate matter sensors can be at any time
Meet test request.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the best embodiment of the utility model.
In figure：1st, high-field electrode, 2, shielding part, 3, shell, 4, interior frit-sealed structure, 5, outer frit-sealed knot
Structure, the 6, first ceramic ring, the 7, second ceramic ring, the 8, the 3rd ceramic ring, the 9, the 4th ceramic ring.
Embodiment
The utility model is described in detail presently in connection with accompanying drawing.This figure is simplified schematic diagram, only in a schematic way
Illustrate basic structure of the present utility model, therefore it only shows the composition relevant with the utility model.
As shown in figure 1, a kind of particulate matter sensors of the present utility model, including the high-field electrode set gradually from inside to outside
1st, part 2 and shell 3 are shielded, the high-field electrode 1 and shielding part 2 are made of stainless steel, and the shell 3 is hexagonal
Seat, interior frit-sealed structure 4 is provided between the high-field electrode 1 and shielding part 2, between the shielding part 2 and shell 3
Provided with outer frit-sealed structure 5, between the high-field electrode 1 and shielding part 2 at the interior frit-sealed both ends of structure 4 respectively
Provided with the first ceramic ring 6 and the second ceramic ring 7, the height H1 of the axial direction of the first ceramic ring 6 is more than the height of the axial direction of the second ceramic ring 7
H2, the 3rd ceramic ring 8 and the 4th pottery are respectively equipped between the shielding part 2 and shell 3 at the outer frit-sealed both ends of structure 5
Ceramic ring 9, the height H3 of the axial direction of the 3rd ceramic ring 8 are more than the height H4 of the axial direction of the 4th ceramic ring 9.
Ceramic ring is toroidal insulation structure, and high-field electrode 1, shielding part 2 and shell 3 are metal material, therefore, are adopted
Adjacent isolation between the two is carried out with ceramic ring, improves reliability, in addition, the ceramic ring of ring-type is carrying out parts assembling
When, it may also function as assembling carrying and ensure the effect of axiality.
Replace original particulate matter sensors to be used for the talcum powder of interior external seal using frit, will be close to air inlet one first
The ceramic ring that the height of side is larger installs, and is then filled with powdered glass material, then again installs highly less ceramic ring, most
Afterwards, by high temperature sintering, powdered glass material is made to be sealed into solid-state.Humidity of the frit not in by air is influenceed, from without
Drying that will be before use 30 minutes.Sensor can just start working after loading onto.
After the completion of particulate matter sensors encapsulation, when applying 1000V voltages, between testing high voltage electrode 1 and shielding part 2
Insulaion resistance be ∞, the insulaion resistance between the high-field electrode 1 and shell 3 is ∞.
Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, by above-mentioned description, related work
Personnel can carry out various changes and amendments in without departing from the scope of the utility model completely.This item utility model
Technical scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (5)
- A kind of 1. particulate matter sensors, it is characterised in that：Including high-field electrode (1), the shielding part set gradually from inside to outside (2) interior frit-sealed structure (4), the shielding and shell (3), are provided between the high-field electrode (1) and shielding part (2) Outer frit-sealed structure (5), the high pressure at interior frit-sealed structure (4) both ends are provided between part (2) and shell (3) The shielding part (2) and shell (3) between electrode (1) and shielding part (2) and outer frit-sealed structure (5) both ends Between be equipped with ceramic ring.
- 2. particulate matter sensors as claimed in claim 1, it is characterised in that：Interior frit-sealed structure (4) both ends Ceramic ring is the first ceramic ring (6) and the second ceramic ring (7), and the height H1 of the first ceramic ring (6) axial direction is more than the second pottery The height H2 of ceramic ring (7) axial direction, the sealing ring at outer frit-sealed structure (5) both ends is the 3rd ceramic ring (8) and the 4th Ceramic ring (9), the height H3 of the 3rd ceramic ring (8) axial direction are more than the height H4 of the 4th ceramic ring (9) axial direction.
- 3. particulate matter sensors as claimed in claim 1 or 2, it is characterised in that：When applying 1000V voltages, the high pressure Insulaion resistance between electrode (1) and shielding part (2) is ∞, the insulaion resistance between the high-field electrode (1) and shell (3) For ∞.
- 4. particulate matter sensors as claimed in claim 1, it is characterised in that：The high-field electrode (1) and shielding part (2) are equal It is made of metal.
- 5. particulate matter sensors as claimed in claim 1, it is characterised in that：The shell (3) is interior hexagonal seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720384067.9U CN206627399U (en) | 2017-04-13 | 2017-04-13 | Particulate matter sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720384067.9U CN206627399U (en) | 2017-04-13 | 2017-04-13 | Particulate matter sensors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206627399U true CN206627399U (en) | 2017-11-10 |
Family
ID=60204969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720384067.9U Active CN206627399U (en) | 2017-04-13 | 2017-04-13 | Particulate matter sensors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206627399U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840982A (en) * | 2017-04-13 | 2017-06-13 | 常州华诚电子有限公司 | Particulate matter sensors |
-
2017
- 2017-04-13 CN CN201720384067.9U patent/CN206627399U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840982A (en) * | 2017-04-13 | 2017-06-13 | 常州华诚电子有限公司 | Particulate matter sensors |
| CN106840982B (en) * | 2017-04-13 | 2024-02-02 | 常州华诚电子有限公司 | Particulate matter sensor |
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