CN217276370U - Flow sensor mounting structure - Google Patents
Flow sensor mounting structure Download PDFInfo
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- CN217276370U CN217276370U CN202220288103.2U CN202220288103U CN217276370U CN 217276370 U CN217276370 U CN 217276370U CN 202220288103 U CN202220288103 U CN 202220288103U CN 217276370 U CN217276370 U CN 217276370U
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- sensor
- sensor body
- mounting structure
- flow sensor
- pcb
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Abstract
The utility model belongs to the technical field of sensor and specifically relates to a flow sensor mounting structure, including sensor body and PCB board, the sensor body is fixed on the PCB board, its characterized in that still includes the aviation baffle, the aviation baffle is equipped with two, the aviation baffle is fixed on the PCB board, and is located the both sides of sensor body, the top surface of aviation baffle with the top surface parallel and level of sensor body. The utility model provides a pair of flow sensor mounting structure adopts and increases the surface that two equal high aviation baffles made the sensor detect in the both sides of sensor to be a plane, and there is not the difference in height in the air current on the sensor surface of flowing through, and the air current is steady, can not produce the swirl, has guaranteed the precision that detects to simple structure, with low costs.
Description
Technical Field
The utility model relates to a sensor, especially a flow sensor mounting structure.
Background
The MEMS flow sensor chip is usually assembled in 2 ways to mount the sensor on the PCB, one is to attach the sensor to the PCB surface, and the other is to dig a pit on the PCB with a thickness similar to the thickness of the chip, and then attach the chip to the pit. In use a gas flow is passed over the sensor surface to measure the gas flow rate. Bond the form on PCB surface with the sensor, the chip surface can be higher than the PCB surface, can form the swirl at PCB and sensor side when the sensor is flowed through to the air current, causes to measure inaccurately. A pit is processed with PCB, bonds the form in the pit with the sensor, and the cost is higher to the precision of PCB processing pit hardly meets the requirement, and there is the sensor and PCB equally and has the difference in height and lead to the inaccurate condition of measurement.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a simple structure, with low costs, can effectively guarantee a flow sensor mounting structure of sensor detection precision, concrete technical scheme is:
the flow sensor mounting structure comprises a sensor body and a PCB, wherein the sensor body is fixed on the PCB, and the flow sensor mounting structure is characterized by further comprising two air deflectors which are fixed on the PCB and located on two sides of the sensor body, and the top surfaces of the air deflectors are flush with the top surface of the sensor body.
Preferably, the air deflectors are symmetrically arranged on two sides of the sensitive area of the sensor body.
Further, the width of the air deflector is not less than the width of the sensitive area of the sensor body.
Preferably, the air deflector is one of a metal plate, a plastic plate or a silicon wafer.
Compared with the prior art the utility model discloses following beneficial effect has:
the utility model provides a pair of flow sensor mounting structure adopts and increases the surface that two equal high aviation baffles made the sensor detect in the both sides of sensor to be a plane, and there is not the difference in height in the air current on the sensor surface of flowing through, and the air current is steady, can not produce the swirl, has guaranteed the precision that detects to simple structure, with low costs.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1, a flow sensor mounting structure, including sensor body 2, PCB board 1 and aviation baffle 3, sensor body 2 fixes on PCB board 1, and aviation baffle 3 is equipped with two, and aviation baffle 3 fixes on PCB board 1, and the symmetric position is in the both sides of the sensitive region 21 of sensor body 2, and the width of aviation baffle 3 is not less than the width of the sensitive region 21 of sensor body 2, and the top surface of aviation baffle 3 and the top surface parallel and level of sensor body 2. The air deflector 3 is made of silicon wafers.
The silicon chip is convenient to process, the processed size precision is very high, so that the difference between the thickness of the air deflector 3 and the thickness of the sensor chip can be almost ignored, the height difference of air flow flowing through the surface of the sensor does not exist, the air flow is stable, and the measurement precision can be improved. The air deflector 3 can also be made of metal or plastic.
Because the PCB board 1 does not need to dig the pit, the cost is reduced. The surface of the PCB 1 is flat, so that the thickness of the air deflector 3 is consistent with that of the sensor body 2, and the processing and the installation are convenient.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the claims of the present invention.
Claims (4)
1. The flow sensor mounting structure comprises a sensor body (2) and a PCB (printed circuit board) (1), wherein the sensor body (2) is fixed on the PCB (1), the flow sensor mounting structure is characterized by further comprising two air deflectors (3), the two air deflectors (3) are fixed on the PCB (1) and located on two sides of the sensor body (2), and the top surface of each air deflector (3) is flush with the top surface of the sensor body (2).
2. A flow sensor mounting arrangement according to claim 1, characterised in that the air deflectors (3) are symmetrically located on both sides of the sensitive area (21) of the sensor body (2).
3. A flow sensor mounting arrangement according to claim 2, characterised in that the width of the air deflector (3) is not less than the width of the sensitive area (21) of the sensor body (2).
4. A flow sensor mounting structure according to any one of claims 1 to 3, wherein the air deflector (3) is one of a metal plate, a plastic plate, or a silicon wafer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220288103.2U CN217276370U (en) | 2022-02-14 | 2022-02-14 | Flow sensor mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220288103.2U CN217276370U (en) | 2022-02-14 | 2022-02-14 | Flow sensor mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217276370U true CN217276370U (en) | 2022-08-23 |
Family
ID=82854151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220288103.2U Active CN217276370U (en) | 2022-02-14 | 2022-02-14 | Flow sensor mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217276370U (en) |
-
2022
- 2022-02-14 CN CN202220288103.2U patent/CN217276370U/en active Active
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