CN110186534A - A kind of chip-shaped fluid sensor - Google Patents
A kind of chip-shaped fluid sensor Download PDFInfo
- Publication number
- CN110186534A CN110186534A CN201910565536.0A CN201910565536A CN110186534A CN 110186534 A CN110186534 A CN 110186534A CN 201910565536 A CN201910565536 A CN 201910565536A CN 110186534 A CN110186534 A CN 110186534A
- Authority
- CN
- China
- Prior art keywords
- air
- chip
- shaped fluid
- pcb board
- pressure sensor
- Prior art date
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/18—Indicating, recording or alarm devices actuated electrically
Abstract
The present invention relates to sensor technical fields, especially a kind of chip-shaped fluid sensor, including link together intake cover, upper capping, the intake cover bottom is equipped with air inlet pipe, horizontally disposed pcb board is fixed with inside the upper capping, the pcb board side is connected with terminal, and the terminal runs through upper capping, pressure sensor is connected among the pcb board, the connecting pipe of the pressure sensor is connected to by connecting hose with air inlet pipe.The fluid sensor of this kind of structure has a long-life, and high stable, high reliability are widely portable to automobile, the detection inside household electrical appliances for fluid.
Description
Technical field
The present invention relates to sensor technical field more particularly to a kind of chip-shaped fluid sensors.
Background technique
Water level sensor of washing machine simple structure, convenient control is widely used in low and middle-end, middle-end, in high-end washing machines.
Water level sensor of washing machine is supplied to one LC tank resonance frequency of computer board of washing machine, and computer board of washing machine is according to the vibration
Swing loop resonance frequency signal automatic control and adjustment water level of washing machine.
Ventional water level sensor is jacked up magnetic core by gel silica membrane upwards, and the electromagnetism of inductance coil is cut when magnetic core is mobile
Line, so that the inductance of inductance coil be driven to change, washing machine internal water level is higher, and the height that magnetic core moves upwards is got over
Height, it is on the contrary then lower, this kind of signal is then passed into washing machine water level controller and judges height of water level, this kind of sensor is machine
Tool oscillatory type water level sensor, detection accuracy is lower, narrow scope of application, while service life is shorter.
Summary of the invention
The purpose of the present invention is to solve mechanical-vibration type water level sensors in the prior art, and detection accuracy is lower, fit
It is relatively narrow with range, while the disadvantage that service life is shorter, and a kind of chip-shaped fluid sensor proposed.
To achieve the goals above, present invention employs following technical solutions:
Design a kind of chip-shaped fluid sensor, including link together intake cover, upper capping, the intake cover bottom
Equipped with air inlet pipe, horizontally disposed pcb board is fixed with inside the upper capping, the pcb board side is connected with terminal, the end
Son runs through upper capping, and pressure sensor is connected among the pcb board, and the connecting pipe of the pressure sensor passes through connection hose
It is connected to air inlet pipe.
Preferably, the intake cover, upper capping are fixed together by way of clamping.
Preferably, the pressure sensor is 2SMPP-02MEMS pressure sensor.
Preferably, the intake cover inner hub location is integrally formed with the air-flow conduction column to raise upward, the air-flow
Conduction column is connected to air inlet pipe, and the air-flow conduction column is with the coaxial arrangement of the connecting pipe of pressure sensor and the air-flow is connected
Installation gap is installed between top end and connecting pipe bottom end, the connection hose bottom end, which is arranged, to be sealed on air-flow conduction column,
The connection hose top is arranged on the connecting pipe for being sealed in pressure sensor.
Preferably, the connection hose is PVC hose or silica gel hose or is tightly connected by O-ring.
Preferably, air-flow conducting top end is spherical shape.
Preferably, side of the pcb board far from terminal is integrally formed with chucking lug, the upper capping inner top wall one
Form the first support rim, the second support rim, the second support rim face pressure sensor and the pcb board back side with
Second support rim end face is in contact, and first support rim is flushed with the second support rim, first support rim end
Portion is integrally formed with positioning pluging rod, and the positioning pluging rod runs through chucking lug, and one side end face of the pcb board with terminal is flat
The face and plane is overlapped with upper capping inner wall.
Preferably, the air-flow conduction column and air inlet pipe are coaxially disposed.
Preferably, the air inlet pipe axis is arranged radially along air-flow conduction column.
Preferably, O-ring seal, the connection hose are equipped between connection hose and the connecting pipe of pressure sensor
It is interference fitted with air-flow conduction column.
A kind of chip-shaped fluid sensor proposed by the present invention, beneficial effect are: when air inlet pipe air inlet, passing through company
Connecing hose makes air stream transportation to pressure sensor, and air-flow is transferred to pressure sensor inside chip, the gas of collection by connecting pipe
Pressure is converted into electric signal output by pcb board internal integrated circuit, alternative mechanical movable LC oscillation mode water level sensor
Repertoire, pressure sensor are 2SMPP-02MEMS pressure sensor, and built-in pressure chip has temperature compensation function, precision
Error is can be controlled within %, and the fluid sensor of this kind of structure has the long-life, and high stable, is broadly applicable high reliability
For the detection of fluid inside automobile, household electrical appliances.
Detailed description of the invention
Fig. 1 is vertical air inlet formula overall structure diagram of the invention；
Fig. 2 is vertical air inlet formula schematic diagram of internal structure of the invention；
Fig. 3 is horizontal air admission type overall structure diagram of the invention；
Fig. 4 is horizontal air admission type schematic diagram of internal structure of the invention；
Fig. 5 is upper capping schematic diagram of internal structure of the invention；
Fig. 6 is pcb board structural schematic diagram of the invention；
Fig. 7 is intake cover schematic diagram of internal structure of the invention；
Fig. 8 is that connection hose and pressure sensor of the invention use sealing ring attachment structure schematic diagram.
In figure: intake cover 1, positioning pluging rod 2, the first support rim 3, pcb board 4, the second support rim 5, upper capping 6, pressure
Force snesor 7, connection hose 8, air-flow conduction column 9, air inlet pipe 10, chucking lug 11.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-8, a kind of chip-shaped fluid sensor, including link together intake cover 1, it is upper capping 6, intake cover
1 bottom is equipped with air inlet pipe 10, is fixed with horizontally disposed pcb board 4 inside upper capping 6,4 side of pcb board is connected with terminal, terminal
Through upper capping 6, be connected with pressure sensor 7 among pcb board 4, the connecting pipe of pressure sensor 7 by connection hose 8 with into
Tracheae 10 is connected to, and connection hose 8 is PVC hose or silica gel hose.
Working principle: when 10 air inlet of air inlet pipe, make air stream transportation to pressure sensor 7, air-flow by connecting hose 8
It is transferred to pressure sensor inside chip by connecting pipe, the air pressure of collection is converted into telecommunications by 4 internal integrated circuit of pcb board
Number output, the repertoire of alternative mechanical movable LC oscillation mode water level sensor, pressure sensor 7 is 2SMPP-02MEMS
Pressure sensor, built-in pressure chip has temperature compensation function, trueness error is can be controlled within 1%, the stream of this kind of structure
Body sensor has a long-life, and high stable, high reliability are widely portable to automobile, the detection inside household electrical appliances for fluid.
For the ease of the installation of entire fluid sensor, while the requirement of assembly precision is reduced, reduces manufacture difficulty, air inlet
Lid 1, upper capping 6 are fixed together by way of clamping.
1 inner hub location of intake cover is integrally formed with the air-flow conduction column 9 to raise upward, air-flow conduction column 9 and air inlet
Pipe 10 is connected to, connecting pipe coaxial arrangement and air-flow conduction column 9 top and connecting pipe bottom of the air-flow conduction column 9 with pressure sensor 7
Installation gap is installed between end, connection 8 bottom end of hose, which is arranged, to be sealed on air-flow conduction column 9, and connection 8 top of hose is arranged close
It is enclosed on the connecting pipe of pressure sensor 7, by connecting hose 8 for the pilot seal of tube of air-flow conduction column 9 and pressure sensor 7
It links together, guarantees that air pressure will not be revealed, detection accuracy is improved, while reducing assembly difficulty and manufacturing cost, due to air-flow
The connecting pipe of conduction column 9 and pressure sensor 7 is coaxially disposed, and is guaranteed that the transmission of stable and uniform is capable of in air pressure, is made pressure sensor 7
Sensor chip obtain the metastable air pressure of essence.
It with reference to Fig. 8, connects and is equipped with O-ring seal between hose 8 and the connecting pipe of pressure sensor 7, connect hose 8 and gas
Conductance through post 9 is interference fitted
It is set on air-flow conduction column 9 for the ease of connection hose 8,9 top of air-flow conduction column is spherical shape.
Side of the pcb board 4 far from terminal is integrally formed with chucking lug 11, and 6 inner top walls of upper capping are integrally formed with first
Support rim 3, the second support rim 5,5 face pressure sensor 7 of the second support rim and 4 back side of pcb board and the second support are convex
5 end face of platform is in contact, and the first support rim 3 is flushed with the second support rim 5, and 3 end of the first support rim is integrally formed with fixed
Position inserted link 2, positioning pluging rod 2 run through chucking lug 11, and one side end face of the pcb board 4 with terminal is plane and the plane and upper envelope
6 inner wall of lid is overlapped, and can preferably be limited to pcb board 4, while effectively pcb board 4 under gas pressure being avoided bending occur
Situation.
Air-flow conduction column 9 and air inlet pipe 10 are coaxially disposed or 10 axis of air inlet pipe is arranged radially along air-flow conduction column 9,
Meet different installation requirements, installs and uses more flexible.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to technical solution, design obtained from equivalent substitution or change, design, should all cover in protection model of the invention
Within enclosing.
Claims (10)
1. a kind of chip-shaped fluid sensor, including link together intake cover (1), upper capping (6), which is characterized in that institute
Intake cover (1) bottom is stated equipped with air inlet pipe (10), the upper capping (6) is internal to be fixed with horizontally disposed pcb board (4), described
Pcb board (4) side is connected with terminal, and the terminal runs through upper capping (6), is connected with pressure sensor among the pcb board (4)
(7), the connecting pipe of the pressure sensor (7) is connected to by connecting hose (8) with air inlet pipe (10).
2. a kind of chip-shaped fluid sensor according to claim 1, which is characterized in that the intake cover (1), upper capping
(6) it is fixed together by way of clamping.
3. a kind of chip-shaped fluid sensor according to claim 1, which is characterized in that the pressure sensor (7) is
2SMPP-02 MEMS pressure sensor.
4. a kind of chip-shaped fluid sensor according to claim 1 or 3, which is characterized in that the intake cover (1) is internal
Center is connected to integrally formed with the air-flow conduction column (9) to raise upward, the air-flow conduction column (9) with air inlet pipe (10),
The connecting pipe coaxial arrangement of the air-flow conduction column (9) and pressure sensor (7) and air-flow conduction column (9) top with lead
Installation gap is installed between pressure pipe bottom end, connection hose (8) bottom end, which is arranged, to be sealed on air-flow conduction column (9), described
Connection hose (8) top is arranged on the connecting pipe for being sealed in pressure sensor (7).
5. a kind of chip-shaped fluid sensor according to claim 4, which is characterized in that the connection hose (8) is PVC
Hose or silica gel hose.
6. a kind of chip-shaped fluid sensor according to claim 4, which is characterized in that air-flow conduction column (9) top
End is spherical shape.
7. a kind of chip-shaped fluid sensor according to claim 1, which is characterized in that the pcb board (4) is far from terminal
Side integrally formed with chucking lug (11), upper capping (6) inner top wall is integrally formed with the first support rim (3),
Two support rims (5), the second support rim (5) face pressure sensor (7) and pcb board (4) back side and the second support are convex
Platform (5) end face is in contact, and first support rim (3) flushes with the second support rim (5), first support rim (3)
Chucking lug (11) are run through integrally formed with positioning pluging rod (2), the positioning pluging rod (2) in end, and the pcb board (4) has terminal
One side end face be that plane and the plane are overlapped with upper capping (6) inner wall.
8. a kind of chip-shaped fluid sensor according to claim 4, which is characterized in that the air-flow conduction column (9) with
Air inlet pipe (10) coaxial arrangement.
9. a kind of chip-shaped fluid sensor according to claim 4, which is characterized in that air inlet pipe (10) the axis edge
Air-flow conduction column (9) is arranged radially.
10. a kind of chip-shaped fluid sensor according to claim 5, which is characterized in that the connection hose (8) and pressure
O-ring seal is equipped between the connecting pipe of force snesor (7), the connection hose (8) and air-flow conduction column (9) are interference fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565536.0A CN110186534A (en) | 2019-06-27 | 2019-06-27 | A kind of chip-shaped fluid sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565536.0A CN110186534A (en) | 2019-06-27 | 2019-06-27 | A kind of chip-shaped fluid sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110186534A true CN110186534A (en) | 2019-08-30 |
Family
ID=67723713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910565536.0A Pending CN110186534A (en) | 2019-06-27 | 2019-06-27 | A kind of chip-shaped fluid sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110186534A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250943A (en) * | 1996-03-14 | 1997-09-22 | Saginomiya Seisakusho Inc | Water level sensor |
| KR20110077721A (en) * | 2009-12-30 | 2011-07-07 | 주식회사 케이이씨 | Pressure sensor module for water level detecting |
| CN202066555U (en) * | 2011-04-21 | 2011-12-07 | 杭州神林电子有限公司 | Water level sensor for household electric appliance equipment |
| KR20120139039A (en) * | 2011-06-16 | 2012-12-27 | 대한중천산업 주식회사 | Sensor assembly for washing machine |
| CN202903411U (en) * | 2012-10-19 | 2013-04-24 | 杭州神林电子有限公司 | Pressure sensor |
| CN205981493U (en) * | 2016-08-08 | 2017-02-22 | 比亚迪股份有限公司 | Intake -temperature pressure transducer |
| CN107389136A (en) * | 2017-08-28 | 2017-11-24 | 浙江沃得尔科技股份有限公司 | A kind of inlet manifold sensor construction |
| CN109029825A (en) * | 2018-08-13 | 2018-12-18 | 芜湖乐佳电器有限公司 | A kind of use in washing machine micro-pressure sensor |
| KR101937879B1 (en) * | 2017-08-30 | 2019-01-14 | 세종공업 주식회사 | Chip Anti-Deformation type Pressure Sensor |
| CN109706698A (en) * | 2019-02-27 | 2019-05-03 | 芜湖乐佳电器有限公司 | Water level sensor of washing machine |
| CN109708722A (en) * | 2019-02-27 | 2019-05-03 | 芜湖乐佳电器有限公司 | A kind of water level sensor |
| CN209841124U (en) * | 2019-06-27 | 2019-12-24 | 芜湖乐佳电器有限公司 | Chip type fluid sensor |
-
2019
- 2019-06-27 CN CN201910565536.0A patent/CN110186534A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250943A (en) * | 1996-03-14 | 1997-09-22 | Saginomiya Seisakusho Inc | Water level sensor |
| KR20110077721A (en) * | 2009-12-30 | 2011-07-07 | 주식회사 케이이씨 | Pressure sensor module for water level detecting |
| CN202066555U (en) * | 2011-04-21 | 2011-12-07 | 杭州神林电子有限公司 | Water level sensor for household electric appliance equipment |
| KR20120139039A (en) * | 2011-06-16 | 2012-12-27 | 대한중천산업 주식회사 | Sensor assembly for washing machine |
| CN202903411U (en) * | 2012-10-19 | 2013-04-24 | 杭州神林电子有限公司 | Pressure sensor |
| CN205981493U (en) * | 2016-08-08 | 2017-02-22 | 比亚迪股份有限公司 | Intake -temperature pressure transducer |
| CN107389136A (en) * | 2017-08-28 | 2017-11-24 | 浙江沃得尔科技股份有限公司 | A kind of inlet manifold sensor construction |
| KR101937879B1 (en) * | 2017-08-30 | 2019-01-14 | 세종공업 주식회사 | Chip Anti-Deformation type Pressure Sensor |
| CN109029825A (en) * | 2018-08-13 | 2018-12-18 | 芜湖乐佳电器有限公司 | A kind of use in washing machine micro-pressure sensor |
| CN109706698A (en) * | 2019-02-27 | 2019-05-03 | 芜湖乐佳电器有限公司 | Water level sensor of washing machine |
| CN109708722A (en) * | 2019-02-27 | 2019-05-03 | 芜湖乐佳电器有限公司 | A kind of water level sensor |
| CN209841124U (en) * | 2019-06-27 | 2019-12-24 | 芜湖乐佳电器有限公司 | Chip type fluid sensor |
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