CN101142477B - Gas sensor and method for the production thereof and uses - Google Patents
Gas sensor and method for the production thereof and uses Download PDFInfo
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- CN101142477B CN101142477B CN200680008628XA CN200680008628A CN101142477B CN 101142477 B CN101142477 B CN 101142477B CN 200680008628X A CN200680008628X A CN 200680008628XA CN 200680008628 A CN200680008628 A CN 200680008628A CN 101142477 B CN101142477 B CN 101142477B
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- 238000000034 method Methods 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title description 3
- 239000007789 gas Substances 0.000 claims abstract description 30
- 238000005056 compaction Methods 0.000 claims description 27
- 238000000465 moulding Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 23
- 239000008246 gaseous mixture Substances 0.000 claims description 9
- 239000008393 encapsulating agent Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000000919 ceramic Substances 0.000 description 31
- 239000002184 metal Substances 0.000 description 10
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 7
- 229910052582 BN Inorganic materials 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
-
- 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
- G01N27/4078—Means for sealing the sensor element in a housing
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- 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)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention relates to a gas sensor for determining gases in gas mixtures comprising a sensor element (27) which is fixed in a sensor housing (12) and surrounded with a seal joint (35) between a connecting area (29) and an area (28) oriented towards the gas mixture, whereby said seal joint (35) is delimited in the sensor longitudinal direction by a shaped body (21, 23), respectively, provided with a passage (22, 24) for the sensor element (27). In such a manner, the limiting surface oriented to the seal joint (35) of at least one shaped body (21, 23) is provided with a practically conical or truncated recess (50) and the conical surface of the cone or truncated cone and the base surface thereof form an angle ranging from 1 to 38 DEG .
Description
Technical field
The present invention relates to a kind of sensor and manufacture method and application thereof that is used for the gas of definite gaseous mixture.
Background technology
The gas sensor of gas that is used for determining the waste gas of internal combustion engine is constructed based on a ceramic sensing element usually, and this sensing element is fixed in the metal shell of sensor and by in the appropriate sealing means relative combustion chamber or the corrosive gas that occurs in exhaust duct sealing.
For example disclose a kind of electrochemical measurement sensor, wherein in a metal shell, kept the ceramic sensing element of a platelet-like by DE 1,000 95 97 A1.In order to seal sensing element, this survey sensor has a packoff, it is made up of two seal elements, and these seal elements comprise the potpourri of being made up of talcum powder and boron nitride powder, wherein is provided with the seal element that another is made by boron nitride between two seal elements.The sealing device constitutes border by a ceramic die product in enclosure interior on sensor is vertical.When making sensor, on the moulded parts that connects side, apply a pressure, compress so that each seal element and sensing element or housing form.Yet, only when the open-work that comprises sensing element in the ceramic die product successfully seals, just reach enough sealing functions.Because these open-works because processing has big relatively tolerance, can not guarantee this sealing in all cases and may cause too early malfunctioning of gas sensor.
Summary of the invention
Task of the present invention is, the sensor of the gas in a kind of definite gaseous mixture is provided, and it has an effective sealing that is combined in the sensing element in the sensor.
According to the present invention, a kind of sensor that is used for the gas of definite gaseous mixture has been proposed, has a sensing element, this sensing element is fixed in the housing of sensor, wherein sensing element at its join domain and its towards being surrounded by a packoff between the zone of gaseous mixture, wherein, packoff sensor vertically on each constitutes the border by a molding, described molding has the open-work that is used to pass sensing element, wherein: the boundary surface towards packoff of at least one molding has a recess of taper or truncated cone shape basically, and wherein the conical surface of the cone or the truncated cone and its basal plane fold one 1 to 38 ° angle.
According to the present invention, a kind of method that is used for making the sensor of the gas of determining gaseous mixture has been proposed, a sensing element is fixed airtightly by a packoff in sensor housing in this sensor, the sealing device be set at two be arranged on housing vertically on molding between, its mode be on the molding housing vertically on apply a compaction pressure, wherein: a boundary surface towards packoff of at least one molding has a recess of taper or truncated cone shape basically, wherein this recess is constructed in this wise, makes the conical surface of the cone or the truncated cone and the angle that its basal plane folds 1 to 38 °.
According to the present invention, also proposed to be used for the application of the oxygen of definite engine exhaust gas according to the sensor in the technique scheme.
According to the sensor of technical solution of the present invention or the method according to this invention solved in an advantageous manner the present invention based on task.
This sensor is demonstrated extraordinary sealing property owing to the seal element of powder type especially directly evenly compresses in the zone of sensing element.By the incline structure of the ceramic moulded bodies that has a common boundary with seal element, the material that causes sealing powder when sensor is compacted is to the foundation of the longitudinal line of movement of sensor and the pressure that caused there improving.Slit between ceramic moulded bodies and sensing element can be full of by encapsulant effectively in this way.
By the measure sensor that can obtain in technique scheme, providing described in the explanation or the favourable further configuration and the improvement of method below.
Advantageously, the cone or the truncated cone have a circle or oval basal plane.
Therefore advantageously, the boundary surface towards packoff of at least one molding has a recess of taper or truncated cone shape basically, and wherein the conical surface of the cone or the truncated cone and its basal plane fold one 1 to 38 ° angle, especially are 1 to 10 ° angle.When compressing, will there be the sealing powder of q.s to move in this way, and can not cause molding to shift out simultaneously by sensor housing to the direction of the longitudinal axis of sensor.
Advantageously, the angle that folds of the conical surface of the cone or the truncated cone and its basal plane regional medium and small than on the narrow limit of sensing element in the zone of the broadside of sensing element.
Advantageously, the conical surface of the cone or the truncated cone has a hyp cross section at least in a subregion.
Advantageously, meet in the darkest zone of the axis of the housing of sensor and described recess.
In addition advantageously, an edge of molding has a chamfering, inclined-plane or rounding, and this edge is made of towards the boundary surface of sensor housing and by the boundary surface towards seal element of molding molding.By the outer peripheral inclined-plane of described one or more moldings, the part of powdery encapsulant is moved to the direction of housing wall when sensor compresses, so that the outer slit between the housing wall of Cun Zaiing and the molding is sealed there.
Advantageously, packoff comprises a kind of powder of electrical isolation.
Advantageously, packoff applies with sensing element and housing by the pressure at least one molding and compresses.
Advantageously, two moldings respectively have a recess of taper or truncated cone shape basically, and wherein the basal plane of each cone or the truncated cone and the corresponding conical surface fold the angle of different sizes.
In a particularly advantageous form of implementation of the present invention, select according to the size of compaction pressure by the angle that basal plane and its conical surface of the cone or the truncated cone constitutes, wherein under the situation that compaction pressure reduces, increasing angles is set.Can realize adapting to the optimal seal of each predetermined compaction pressure in this way.
Advantageously, select according to formula α=arccos (b*c) by the angle that basal plane and its conical surface of the cone or the truncated cone constitutes, α is the angle that basal plane and its conical surface by the cone or the truncated cone constitute in the formula, b is made of measuring of the ratio of set compaction pressure and the conventional compaction pressure that needs and gets numerical value between 0.8 and 1, its intermediate value b=1 is corresponding to a common compaction pressure, and c represents a correction coefficient that is used for the deformability of component of friction and encapsulant in the formula.
Description of drawings
Express embodiments of the invention and in the following description it being described in detail in the accompanying drawings.Accompanying drawing is represented:
Fig. 1: according to a summary longitudinal section of the sensor of the first embodiment of the present invention,
Fig. 2: according to a part in the structure of second embodiment, sensor shown in Fig. 1,
Fig. 3: according to a part in the structure of the 3rd embodiment, sensor shown in Fig. 1, and
Fig. 4: according to a part in the structure of the 4th embodiment, sensor shown in Fig. 1.
Embodiment
Fig. 1 represents to be used for to determine a principle of sensors structure of the gas of gaseous mixture.This sensor 10 for example is an electrochemistry oxygen sensor, it comprises a metal shell 12, this housing have one be used for being installed to a unshowned tested flue, as the screw thread 13 of fixed mechanism, this tested flue for example is configured to the waste gas feeder system.Housing 12 has a vertical hole 15 that has the ring surface 16 of takeing on shape.For example the sealing ring 18 of a metal is on the ring surface 16 of shoulder shape, and the ceramic die product 21 of a tested gas side is by touching on the sealing ring.The ceramic die product 21 of tested gas side has the perforation open-work 22 of tested gas side on the direction that extends in vertical hole 15, that be arranged on the center.In vertical hole 15, turn up the soil at interval and also be provided with a ceramic die product 23 that is connected side with the ceramic die product 21 of tested gas side.The ceramic die product 23 that connects side also has the perforation open-work 24 of connection side on the direction that extends in vertical hole 15, that be arranged on the center.
The connection side open-work 24 of the tested gas side open-work 22 of tested gas side ceramic die product 21 and connection side ceramic die product 23 extends aligned with each otherly.The sensing element 27 that has a platelet form in open- work 22,24, it is provided with end section 28 and an end section 29 that connects side of a tested gas side.
The tested gas side end section 28 of sensing element 27 is by stretching out in the housing 12 and being surrounded by a protection tube 31, and this protection tube is fixed on the housing 12.Protection tube 31 has a plurality of entering and exhaust opening 32 of measured gas that are used for.Connect side end section 29 and have some connection contacts 34, they are also by stretching out in the housing 12.These connect contact 34 and unshowned, as to be provided with a stube cable contact plug connector contacting.The connection side end section 29 that is stretched out by housing 12 is surrounded by a not shown packed part, and this packed part protection connects the influence that side end section 29 is avoided environment.
Have a packoff 35 at tested gas side ceramic die product 21 between the side ceramic die product 23 with being connected, the sealing device is made of first seal element, 36, the second seal elements 37 and the 3rd seal element 38.First seal element 36 is placed on the tested gas side ceramic die product 21.On first seal element 36, connecting second seal element 37.On second seal element 37, be provided with the 3rd seal element 38, the latter be connected side ceramic die product 23 and form contact.
When making this sensor a snap-in force is acted on the metal sleeve 40, this metal sleeve is delivered to snap-in force again and connects on the side ceramic die product 23.Metal sleeve 40 for example has a plurality of rearward extending pawls 41, and they are coupled in the groove 42 that is formed on the housing 12.But also can consider, metal sleeve 40 and housing 12 welding.
The first and the 3rd seal element 36,38 preferably is made up of the potpourri of talcum powder and hexagonal boron nitride powder.The share of boron nitride is preferably more than 10% percentage by weight.In the case, best boron nitride share is preferably 20% percentage by weight between 15 and 30% percentage by weight, because best sliding properties occurs in this scope.
Talcum powder has the particle radius of 200 to 300 μ m, is preferably the particle radius of 250 μ m, reaches the particle radius that boron nitride powder has 2 to 3 μ m, is preferably the particle radius of 2.5 μ m.Second seal element 37 for example is made up of hexagonal boron nitride.
Also can consider another unshowned form of implementation of the present invention, packoff 35 only is made up of a unique seal element in this form of implementation, and the sealing element has the characteristic of first seal element 36 described in Fig. 1.Can consider that also packoff 35 is by any two the constituting in three seal elements 36,37,38 shown in Fig. 1.
Before in the vertical hole 15 of housing 12 of packing into, seal element 36,37,38 preferably by precompressed, preformed and under a temperature by preannealing, this temperature for example is 630 ℃ at least corresponding to later serviceability temperature.To be inserted in the vertical hole 15 that comprises sensing element 27 according to the annular seal element 36,37,38 that this embodiment constitutes like this.On packoff 35, place again and connect side ceramic die product 23.On connection side ceramic die product, put metal sleeve 40 then.Then apply a power by a drift on metal sleeve 40, this power affacts on the seal element 36,37,38 of packoff 35 by connecting side ceramic die product 23.At this, the ring of the preproduction of these seal elements 36,37,38 is out of shape in this wise, so that the material of seal element 36,37,38 is pressed on sensing element 27 and the housing 12.For example can make residual moisture from seal element 36,37 by induction heating before or after covering, 38 overflow.
Make sensor be suitable for working enduringly in order to accomplish, importantly sensing element 27 is in enough sealings of sensor 10 inside.But sealing especially has problem in the zone of the open- work 22,24 of ceramic die product 21,23, because these open-works have certain tolerance for the processing reason, so that make sensing element 27 can pass these open-works 22,24.Because when sensor is pressed to sleeve pipe 40, on sensor is vertical, apply a power, seal element 36,37,38 material usually can not have defective to the sealing function that moves fully on the direction of sensing element 27 and reached in the zone of next-door neighbour's sensing element 27.
In order to address this problem, at least one ceramic die product 21,23, especially connect side ceramic die product 23 and on the boundary surface of packoff 35, be provided with recess 50 taper or truncated cone shape at it, its summit or central axis especially coincide with the longitudinal axis of housing 12 and diameter basically corresponding to the diameter of ceramic die product 21,23.In this way, when sensor 10 vertically on sleeve pipe 40, apply a power time set up a force component towards sensing element 27 directions, and this force component causes the compression of pulverous encapsulant in the zone of sensing element 27 of seal element 36,38.
If it is for being pressed on of sensor applies 25 to 28kN compaction pressure on the sleeve pipe 40, then just enough when recess taper or truncated cone shape has the relatively little degree of depth.The basal plane (Grundflaeche) of the conical surface of recess 50 taper or truncated cone shape and this cone or truncated cone preferably folds one 1 ° to 10 ° angle in the case, especially is 2 ° to 5 °.This is enough to producing a force component on the direction of sensing element 27, so that causes enough sealings of the Powdered encapsulant of seal element 36 around next-door neighbour's sensing element when applying compaction pressure.Here the conical surface for a cone can be regarded as boundary surface cone and conical shell shape its basal plane adjacency.
Coming jam sensor if be provided with than the above-mentioned common little compaction pressure of compaction pressure, when being had higher height to about 38 ° angle value by the folded angle of the basal plane of the conical surface of this cone or the truncated cone and cone, can be favourable.It is to draw for such fact, is promptly also obtaining the less action force component on the direction of sensing element 27 when less compaction pressure.But in order to make force component keep constant basically, then as countermeasure in the bigger angle of setting between the basal plane of the cone that constitutes recess 50 or the truncated cone and the conical shell face.
Especially there is such possibility, the relation of a ratio b and an angle [alpha] is promptly described, this angle [alpha] is by the cone of describing recess 50 or the basal plane and the folded angle of the conical surface of the truncated cone, and this ratio b is made of the measuring of ratio of set compaction pressure with the conventional compaction pressure that needs.This represents according to following formula:
α＝arccos(b*c) (1)。
B gets 0.8 to 1 numerical value in the formula, wherein b=1 represent compaction pressure be 25 to 28kN and b=0.8 represent one that reduce, be 80% compaction pressure of necessary compaction pressure.Coefficient c represents a correction coefficient that is used for the deformability of component of friction and encapsulant.
Constituting the cone or the truncated cone of describing recess 50 is not the basal plane that must have a circle.And this basal plane also can constitute by an elliptical area, wherein the zone of oval minor diameter especially with the broadside overlaid of platelet-like sensing element to be sealed.But also can be other basal plane configuration that meets the requirements, for example can be the structure of a rectangle.
This is based on such understanding: the compaction pressure in the narrow edge regions of tabular sensing element can descend less than the compaction pressure in the broadside zone of this sensing element.Therefore in the broadside zone of sensing element 27 angle of the conical surface of the cone or the truncated cone and its basal plane less than the angle in the narrow edge regions of sensing element 27.
Fig. 2 represents the sensor according to second embodiment.Wherein with Fig. 1 in identical parts part represent with identical reference number.
Here the basal plane that constitutes the cone of recess 50 or the truncated cone has the diameter littler than ceramic die product 21,23.Can avoid in this way: though reached enough sealings of sensing element 27 by structure recess 50, this abundant sealing to ceramic die product 21,23 relative housings 12 is influential.By guaranteeing in the form of implementation shown in Fig. 2: encapsulant is retained in the outer peripheral zone of ceramic die product 21,23 with enough amounts.
Expression is according to the sensor of the 3rd embodiment among Fig. 3.At this, also represent with identical reference number with parts part identical in Fig. 1 and 2.
Constituted in this wise at Fig. 3 center dant 50, promptly it can be described by a cone, and its top is not to be connected point-blank with the basal plane circumference, but comes approaching by hyperbolic curve.The advantage of this form of implementation especially is: when a compaction pressure is applied on the sleeve pipe 40, especially on the direction of sensing element 27 extra high force component is being arranged in the zone of the proximity sense element 27 of seal element 38.This will improve sealing function further.
Shown in Fig. 4 according to the sensor of the 3rd embodiment.At this, represent with identical reference number with parts part identical among Fig. 1 to 3.
Form of implementation shown in Fig. 4 is corresponding to the form of implementation shown in Fig. 2, but ceramic die product 23 has an outer peripheral incline structure 52, and this outward flange is made of the boundary surface that the boundary surface towards seal element 38 reaches towards housing 12.In this way, additionally producing an additional force component on the direction of housing 12 in this outer peripheral zone when applying compaction pressure on sleeve pipe 40, this force component can cause the better sealing in this zone.To this incline structure alternatively, this outward flange also can have a rounding or a chamfering.
In principle, one or two ceramic die product 21,23 can be constructed according to one among the embodiment 1 to 4 or their combination.At this, two ceramic die products 21,23 can come configuration at it in identical or different modes on the boundary surface of seal element 36,38.
Sensor according to the present invention is suitable for holding different electrochemical sensors, and these sensing elements are used for definite gas, as oxygen, and nitrogen oxide, sulfur oxide, ammonia, flue gas or hydrocarbon.
Claims (14)
1. the sensor that is used for the gas of definite gaseous mixture, has a sensing element (27), this sensing element is fixed in the housing (12) of sensor, wherein sensing element (27) is surrounded by a packoff (35) between its join domain (29) and its zone towards gaseous mixture (28), wherein, packoff (35) sensor vertically on each by a molding (21,23) constitute the border, described molding has the open-work (22 that is used to pass sensing element (27), 24), it is characterized in that: at least one molding (21,23) the boundary surface towards packoff (35) has a recess (50) of taper or truncated cone shape basically, and wherein the conical surface of the cone or the truncated cone and its basal plane fold one 1 to 38 ° angle.
2. according to the sensor of claim 1, it is characterized in that: the cone or the truncated cone have a circle or oval basal plane.
3. according to the sensor of claim 1 or 2, it is characterized in that: the conical surface of the cone or the truncated cone and described basal plane fold one 1 to 10 ° angle.
4. according to the sensor of claim 1 or 2, it is characterized in that: the angle that the conical surface of the cone or the truncated cone and its basal plane fold regional medium and small than on the narrow limit of sensing element (27) in the zone of the broadside of sensing element (27).
5. according to the sensor of claim 1 or 2, it is characterized in that: the conical surface of the cone or the truncated cone has a hyp cross section at least in a subregion.
6. according to the sensor of claim 1 or 2, it is characterized in that: meets in the darkest zone of the axis of the housing of sensor (12) and described recess (50).
7. according to the sensor of claim 1 or 2, it is characterized in that: molding (21,23) a edge has a chamfering, inclined-plane or rounding, this edge is by molding (21, boundary surface towards packoff (35) of the boundary surface of a housing towards sensor (12) 23) and molding (21,23) constitutes.
8. according to the sensor of claim 1 or 2, it is characterized in that: packoff (35) comprises a kind of powder of electrical isolation.
9. according to the sensor of claim 1 or 2, it is characterized in that: packoff (35) applies with sensing element (27) and housing (12) by the pressure at least one molding (21,23) and compresses.
10. according to the sensor of claim 1 or 2, it is characterized in that: two moldings (21,23) respectively have a recess (50) of taper or truncated cone shape basically, and wherein the basal plane of each cone or the truncated cone and the corresponding conical surface fold the angle of different sizes.
11. be used for making the method for the sensor of the gas of determining gaseous mixture, a sensing element (27) is fixed airtightly by a packoff (35) in sensor housing (12) in this sensor, the sealing device be set at two be arranged on housing (12) vertically on molding (21,23) between, its mode is at molding (21,23) go up housing (12) vertically on apply a compaction pressure, it is characterized in that: at least one molding (21,23) a boundary surface towards packoff (35) has a recess (50) of taper or truncated cone shape basically, wherein this recess (50) is constructed in this wise, makes the conical surface of the cone or the truncated cone and the angle that its basal plane folds 1 to 38 °.
12. the method according to claim 10 is characterized in that: select according to the size of compaction pressure by the angle that basal plane and its conical surface of the cone or the truncated cone constitutes, wherein under the situation that compaction pressure reduces, increasing angles is set.
13. method according to claim 10 or 11, it is characterized in that: select according to formula α=arccos (b*c) by the angle that basal plane and its conical surface of the cone or the truncated cone constitutes, α is the angle that basal plane and its conical surface by the cone or the truncated cone constitute in the formula, b is made of measuring of the ratio of set compaction pressure and the conventional compaction pressure that needs and gets numerical value between 0.8 and 1, its intermediate value b=1 is corresponding to a common compaction pressure, and c represents a correction coefficient that is used for the deformability of component of friction and encapsulant in the formula.
14. be used for determining the application of the oxygen of engine exhaust gas according to one sensor in the claim 1 to 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200510012449 DE102005012449A1 (en) | 2005-03-18 | 2005-03-18 | Sensor and method for its production |
| DE102005012449.6 | 2005-03-18 | ||
| PCT/EP2006/060497 WO2006097414A1 (en) | 2005-03-18 | 2006-03-06 | Gas sensor and method for the production thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101142477A CN101142477A (en) | 2008-03-12 |
| CN101142477B true CN101142477B (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680008628XA Expired - Fee Related CN101142477B (en) | 2005-03-18 | 2006-03-06 | Gas sensor and method for the production thereof and uses |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101142477B (en) |
| DE (1) | DE102005012449A1 (en) |
| WO (1) | WO2006097414A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007016976B4 (en) | 2007-04-10 | 2021-07-29 | Bayerische Motoren Werke Aktiengesellschaft | Protective cap for a gas sensor and gas sensor |
| CN102346178A (en) * | 2010-07-26 | 2012-02-08 | 比亚迪股份有限公司 | Gas transducer seal component and an automobile oxygen sensor |
| DE102012108636A1 (en) * | 2012-09-14 | 2014-03-20 | Hamilton Bonaduz Ag | Potentiometric sensor element and method for its production |
| CN105445352A (en) * | 2015-10-21 | 2016-03-30 | 厦门宏发电力电器有限公司 | Chip type oxygen sensor structure and manufacturing method thereof |
| JP6421771B2 (en) * | 2016-02-29 | 2018-11-14 | トヨタ自動車株式会社 | Sulfur oxide detector |
| JP6542707B2 (en) * | 2016-04-21 | 2019-07-10 | 日本特殊陶業株式会社 | Gas sensor |
| KR101895236B1 (en) * | 2017-12-22 | 2018-09-07 | 주식회사 이엘티센서 | Optical cavity for gas sensor and gas sensor having the same |
| JP7396917B2 (en) * | 2020-02-12 | 2023-12-12 | 日本碍子株式会社 | gas sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818363A (en) * | 1982-02-26 | 1989-04-04 | Robert Bosch Gmbh | Combustion exhaust gas sensor structure, particularly for automotive engine exhaust gases |
| CN1222975A (en) * | 1997-04-07 | 1999-07-14 | 罗伯特·博施有限公司 | Sealing element for sensors |
| US5942092A (en) * | 1996-02-14 | 1999-08-24 | Robert Bosch Gmbh | Sensor |
| US6164120A (en) * | 1997-02-25 | 2000-12-26 | Robert Bosch Gmbh | Detector and method for the production thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001034951A2 (en) * | 1999-10-27 | 2001-05-17 | Delphi Technologies, Inc. | A gas sensor terminal assembly and method of producing same |
| DE10009597B4 (en) * | 2000-02-29 | 2006-12-07 | Robert Bosch Gmbh | Electrochemical sensor and method for its production |
-
2005
- 2005-03-18 DE DE200510012449 patent/DE102005012449A1/en not_active Withdrawn
-
2006
- 2006-03-06 CN CN200680008628XA patent/CN101142477B/en not_active Expired - Fee Related
- 2006-03-06 WO PCT/EP2006/060497 patent/WO2006097414A1/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818363A (en) * | 1982-02-26 | 1989-04-04 | Robert Bosch Gmbh | Combustion exhaust gas sensor structure, particularly for automotive engine exhaust gases |
| US5942092A (en) * | 1996-02-14 | 1999-08-24 | Robert Bosch Gmbh | Sensor |
| US6164120A (en) * | 1997-02-25 | 2000-12-26 | Robert Bosch Gmbh | Detector and method for the production thereof |
| CN1222975A (en) * | 1997-04-07 | 1999-07-14 | 罗伯特·博施有限公司 | Sealing element for sensors |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005012449A1 (en) | 2006-09-21 |
| CN101142477A (en) | 2008-03-12 |
| WO2006097414A1 (en) | 2006-09-21 |
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