CN206772925U - Gas sensor - Google Patents
Gas sensor Download PDFInfo
- Publication number
- CN206772925U CN206772925U CN201720197251.2U CN201720197251U CN206772925U CN 206772925 U CN206772925 U CN 206772925U CN 201720197251 U CN201720197251 U CN 201720197251U CN 206772925 U CN206772925 U CN 206772925U
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- shell
- air
- flow
- inner casing
- gas sensor
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Abstract
The utility model discloses a kind of gas sensor, including shell, gas detecting element, the gas detecting element is placed in shell, is the flowing space for steady air flow between the inwall and gas detecting element of shell, it is characterised in that：One section of truncated cone-shaped shell segments is provided with the shell, at least two the first air-flow access apertures for being used to be passed through air-flow into the flowing space are offered in truncated cone-shaped shell segments.The utility model gas sensor shows preferable electric signal and response speed to the gas of different directions, is matched with the blast pipe of different automobile types with preferably compatibility.
Description
Technical field
It the utility model is related to a kind of gas sensor.
Background technology
Because the application environment of automobile exhaust sensor, high temperature, high pollution, so existing automobile exhaust sensor often makes
With a kind of protection Analysis of Nested Design of double shielding, to cause the harmful substance of vehicle exhaust not directly act on sensor sensing member
Part is so as to improving the stability of life of product and signal.But the difference of the blast pipe and installation site due to different automobile types, air-flow
Flow to inconsistent, and the gas sensor of existing side air inlet or top air inlet can not solve under different situations simultaneously
Air flow direction problem.
Utility model content
The purpose of this utility model is to overcome above shortcomings in the prior art, and provides a kind of satisfaction not Tongan City
The gas sensor of gas exchanges problem under holding position.
The technical scheme in the invention for solving the above technical problem is：
A kind of gas sensor, including shell, gas detecting element, the gas detecting element are placed in shell, shell
Inwall and gas detecting element between for the flowing space for steady air flow, it is characterised in that：It is provided with the shell
One section of truncated cone-shaped shell segments, at least two the first gas for being used to be passed through air-flow into the flowing space are offered in truncated cone-shaped shell segments
Flow access apertures.
The utility model for the first air-flow access apertures that air-flow is passed through into the flowing space due to will be arranged on outside wall surface
In inclined truncated cone-shaped shell segments so that when gas sensor is arranged on the blast pipe of different automobile types, although air-flow
Flow to inconsistent, but air-flow can be still acted on the outer wall of truncated cone-shaped shell segments so that the flowing space can obtain enough
The detection gas of amount, so as to meet the gas exchanges problem under different installation sites, the utility model gas sensor is to difference
The gas in direction shows preferable electric signal and response speed, is matched with the blast pipe of different automobile types with preferably simultaneous
Capacitive.
Preferably, the shell is provided with inner casing, inner casing is divided into outer space and inner space by inner casing, described interior
At least two the second air-flow access apertures for being used to be passed through air-flow into inner space are offered on shell.Using this structure, flowing
Space is divided into outer space and inner space, by inner space can more preferable steady air flow, it is more accurate so as to obtain
Gas-monitoring effect.
Preferably, the tail end of the shell and inner casing is each attached to in externally threaded fixed column, opened in fixed column
Provided with the through hole for passing gas detecting element, the tail end of the inner casing is extended with extension edge, the extension banding laterally
Firmly the afterbody port of shell, the edge of the extension edge are fixed in fixed column.Using this structure, the assembly method of product compared with
To be reasonable, processing and manufacturing cost can be controlled.
Preferably, tail end of the second air-flow access apertures with respect to the first air-flow access apertures closer to shell.Using this
Structure, staggered arrangement by the first air-flow access apertures and the second air-flow access apertures so that gas needs to undergo in outer space
Behind one section of space, just enter inner space via the second air-flow, more stable air-flow can be obtained, it is more accurate so as to obtain
Gas-monitoring effect.
Preferably, the inner casing is located on the cylinder of cylindrical inner casing in cylinder, the second air-flow access apertures.
Preferably, hexagonal fixed block in the fixed column.
Preferably, the angle between the truncated cone-shaped shell segments wall and truncated cone-shaped shell segments axis is 20 ° to 70 °.
The utility model compared with prior art, has advantages below and effect：The utility model will be due to that will be used for stream
The first air-flow access apertures that air-flow is passed through in dynamic space is arranged in the inclined truncated cone-shaped shell segments of outside wall surface so that gas
When sensor is arranged on the blast pipe of different automobile types, although flowing to for air-flow is inconsistent, but air-flow can still act on circle
On the outer wall of platform shape shell segments so that the flowing space can obtain the detection gas of sufficient amount, so as to meet different installation sites
Under gas exchanges problem, the utility model gas sensor shows preferable electric signal and sound to the gas of different directions
Speed is answered, is matched with the blast pipe of different automobile types with preferably compatibility.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment gas sensor.
Fig. 2 is the internal structure schematic diagram of the utility model embodiment gas sensor.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in further detail by embodiment, and following examples are pair
It is of the present utility model explanation and the utility model is not limited to following examples.
Referring to Fig. 1-Fig. 2, the present embodiment gas sensor, including shell 2, gas detecting element 1, the gas detection member
Part is placed in shell 2, is the flowing space for steady air flow, the shell between the inwall and gas detecting element 1 of shell 2
One section of truncated cone-shaped shell segments 21 is provided with 2, at least two are offered in truncated cone-shaped shell segments 21 and is used to lead into the flowing space
Enter the first air-flow access apertures 22 of air-flow.The shell 2 is provided with inner casing 4, and inner casing 4 is divided into the He of outer space 31 by inner casing 4
Inner space, at least two the second air-flow access apertures 41 for being used to be passed through air-flow into inner space are offered on the inner casing 4.
The tail end of the shell 2 and inner casing 4 is each attached in the fixed column 5 with external screw thread 51, is offered in fixed column 5 for passing
The through hole 52 of gas detecting element 1, the tail end of the inner casing 4 are extended with extension edge 42 laterally, and the extension edge 42 seals outer
The afterbody port of shell 2, the edge of the extension edge 42 are fixed in fixed column 5.The inner casing 4 is in cylinder, second gas
Stream access apertures 41 is located on the cylinder of cylindrical inner casing 4.Second air-flow access apertures, 41 relative first air-flow access apertures 22 is more leaned on
The tail end of nearly shell 1.Hexagonal fixed block 6 in the fixed column 5.
Angle between the wall of truncated cone-shaped shell segments 21 and the axis of truncated cone-shaped shell segments 21 is 20 ° to 70 °.
Above content described in this specification is only to the utility model example explanation.The utility model
Person of ordinary skill in the field can make various modifications or supplement to described specific embodiment or using class
As mode substitute, content without departing from the utility model specification or surmount model defined in the claims
Enclose, the scope of protection of the utility model all should be belonged to.
Claims (7)
1. a kind of gas sensor, including shell, gas detecting element, the gas detecting element are placed in shell, shell
It is the flowing space for steady air flow between inwall and gas detecting element, it is characterised in that：One is provided with the shell
Section truncated cone-shaped shell segments, at least two the first air-flows for being used to be passed through air-flow into the flowing space are offered in truncated cone-shaped shell segments
Access apertures.
2. gas sensor according to claim 1, it is characterised in that：The shell is provided with inner casing, and inner casing is by inner casing
Outer space and inner space are divided into, at least two are offered on the inner casing and is used to be passed through the of air-flow into inner space
Two air-flow access apertures.
3. gas sensor according to claim 2, it is characterised in that：The tail end of the shell and inner casing is each attached to tool
Have in externally threaded fixed column, offer the through hole for passing gas detecting element in fixed column, the tail end of the inner casing to
Outside is extended with extension edge, and the extension edge seals the afterbody port of shell, and the edge of the extension edge is fixed in fixed column.
4. gas sensor according to claim 2, it is characterised in that：Second air-flow access apertures is passed through with respect to the first air-flow
Tail end of the hole closer to shell.
5. gas sensor according to claim 2, it is characterised in that：The inner casing is in cylinder, second air-flow
Access apertures is located on the cylinder of cylindrical inner casing.
6. gas sensor according to claim 3, it is characterised in that：Hexagonal fixed block in the fixed column.
7. gas sensor according to claim 1, it is characterised in that：Outside the truncated cone-shaped shell segments wall and truncated cone-shaped
Angle between shell section axis is 20 ° to 70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720197251.2U CN206772925U (en) | 2017-03-02 | 2017-03-02 | Gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720197251.2U CN206772925U (en) | 2017-03-02 | 2017-03-02 | Gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206772925U true CN206772925U (en) | 2017-12-19 |
Family
ID=60631995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720197251.2U Active CN206772925U (en) | 2017-03-02 | 2017-03-02 | Gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206772925U (en) |
-
2017
- 2017-03-02 CN CN201720197251.2U patent/CN206772925U/en active Active
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| GR01 | Patent grant |