CN209247733U - A kind of air quality detecting device - Google Patents
A kind of air quality detecting device Download PDFInfo
- Publication number
- CN209247733U CN209247733U CN201821962405.3U CN201821962405U CN209247733U CN 209247733 U CN209247733 U CN 209247733U CN 201821962405 U CN201821962405 U CN 201821962405U CN 209247733 U CN209247733 U CN 209247733U
- Authority
- CN
- China
- Prior art keywords
- air
- circuit board
- detecting device
- airtight cavity
- quality detecting
- 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.)
- Active
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model provides a kind of air quality detecting device, including upper housing, lower case and circuit board, bypass channel is equipped with inside the upper housing of circuit board side, bypass channel inlet end is connected to air inlet, outlet side is connected to venthole, the circuit board other side is equipped with airtight cavity, airtight cavity inlet end is connected to air inlet, outlet side is connected to venthole, tested air-flow is entered by air inlet, a part branches to airtight cavity for being detected and being discharged by venthole by the detector on circuit board, another part branches to bypass channel and is discharged without the detector on circuit board by venthole.The utility model has the beneficial effects that bypass channel shunts the tested air-flow for entering air quality detecting device, keep the air-flow into airtight cavity more stable, it is ensured that normal sample improves the accuracy of testing result, extends device lifetime.
Description
Technical field
The utility model relates to air quality detection technique field more particularly to a kind of air quality detecting devices.
Background technique
With the promotion of health perception, automotive supplier starts to be equipped with air quality detecting device on automobile, so as to energy
It is enough that accurately the air quality in automobile or outside automobile is detected in real time, it is made for user and opens or closes vehicle-mounted purification system
The foundation of system or vehicle window.
Air quality detecting device is applied on automobile, is limited to by installation site, the inspection of Vehicular air quality detection device
It surveys performance and installation site mismatches, be unable to satisfy all kinds of depots and require, such as Vehicular air quality detection device is installed on
At the glove box of automobile, close to the air outlet of on-board air conditioner, being influenced car by speed or on-board air conditioner air-flow, there are negative pressure, vehicles
Normal sample need to just be can ensure that using the air blower of larger suction draught by carrying air quality detecting device, but using larger suction draught
Air blower will lead to the gas flow rate height into sensor internal, influence measurement accuracy.In addition, since automobile is generally in traveling
State, the air environment encountered is more severe, can make the air inlet of air quality detecting device by air soil, hair,
The large particles such as fabric blocking, although also have partial air quality detection device be equipped with strainer, due to strainer setting into
Pipe, large particle can build up at strainer after entering air inlet pipe, lead to filter net jam, sense caused by product
The deterioration of device performance.
Such as patent document CN107655798A discloses a kind of device for detecting automobile interior exterior air quality, disclosed in
The reticulated cell of the acquisition internal member of U-shaped acquisition head cap can play preliminary filtering function, can be different by bulky grain, soil, wool fabric etc.
Object hinders shelves outside, and user can dial lower acquisition cap and clear up, but it does not overcome since detection air-flow is excessive caused
Detect the technological deficiency of inaccuracy.
Such as patent document CN107655798A discloses a kind of device for detecting automobile interior exterior air quality, it discloses
Runner is divided into two channels by gas distribution structure, flow dividing structure, is drawn in the air-flow in a channel without sensor
Detector and be expelled directly out outside device, be drawn into the air-flow in another channel and be detected by the detector of sensor.This scheme
Solve due to detection air-flow it is excessive caused by detection inaccuracy technical problem, but a flow passage structure therein also will be according to
Cooperate by the wind guide tank of another laser socket and complete, structure is complicated, at high cost, has certain limitation.
Utility model content
The embodiments of the present invention provide the Detection of Air Quality dress that a kind of structure is simple, at low cost, accuracy is high
It sets.
The utility model provides a kind of air quality detecting device, including upper housing, the lower casing connecting with the upper housing
Body and the circuit board being set between upper housing and the lower case, the upper housing outside are equipped with air inlet and venthole,
Bypass channel is equipped with inside upper housing described in the circuit board side.
The bypass channel inlet end is connected to the air inlet, and outlet side is connected to the venthole, the circuit
The plate other side is equipped with airtight cavity, and the airtight cavity inlet end is connected to the air inlet, and outlet side and the venthole connect
Logical, tested air-flow is entered by the air inlet, and a part branches to airtight cavity for by the intracorporal detector of the closed chamber
It detects and is discharged by the venthole, another part branches to the bypass runner and is discharged by the venthole.
A kind of air quality detecting device, including side air-out formula suction element, the suction element are set to institute
It states between upper housing and the circuit board, the suction element is electrically connected the circuit board, and the suction element inlet end connects
The air inlet is connect, outlet side is separately connected the airtight cavity inlet end and bypass channel inlet end.
The bypass channel is trench structure made of being enclosed as baffle, and the bypass channel notch is by the circuit board cover
It closes, the bypass channel inlet end is connected with the suction element outlet side, and outlet side is set to immediately below the venthole
And it is linked together with it.
The circuit board be equipped with first through hole and the second through-hole, the first through hole be set to the circuit board with it is described
Suction element outlet side relative position, and the first through hole is opposite with the inlet end of the airtight cavity, second through-hole
It is set to the circuit board and airtight cavity outlet side relative position, and second through-hole is connected to the venthole.
Filter cover is set on the outside of the air inlet, filter screen is equipped with inside the filter cover, outside is equipped with mesh wall, described
The top of mesh wall is equipped with several filter hole, and the aperture of several filter hole is greater than the aperture of the filter screen.
The air inlet is to be detachably connected with the filter cover.
The filter cover is surrounded by several claws, and position corresponding with the filter cover is equipped on the air inlet
One protrude from the annular convex platform of the upper casing external surface, and the annular convex platform is surrounded by several to be matched with the claw
Rotary buckle realizes the fixation between the filter cover and the air inlet by the cooperation of the claw and the rotary buckle
With disassembly.
The circuit board is equipped with laser emission element and photodetector, and the laser emission element and the photoelectricity are visited
It surveys device to be sealed in the airtight cavity, air flow passage is set in the airtight cavity, the photoelectric transfer detector is set
It is placed in the air flow passage, at least one is respectively arranged in the two sides of photoelectric transfer detector described in the air flow passage
Adding thermal resistance, to prevent the vapor in tested air-flow from condensing on photoelectric transfer detector.
The outlet side side of the airtight cavity is equipped with the temperature sensor for detecting the adding thermal resistance heating temperature.
The airtight cavity includes bracket and cover board, and the laser emission element is fixed on the bracket, the cover board
It is covered on the bracket.
Detailed description of the invention
Fig. 1 is a kind of explosive view of air quality detecting device of the utility model；
Fig. 2 is a kind of perspective view of air quality detecting device of the utility model；
Fig. 3 is the external structure of outer housing 1 in Fig. 1；
Fig. 4 is the internal structure chart of outer housing 1 in Fig. 1；
Fig. 5 is the schematic diagram of circuit board 3 in Fig. 1；
Fig. 6 is the schematic diagram of airtight cavity in Fig. 1.
In figure: 1- upper housing, 101- air inlet, 102- venthole, 103- bypass channel, 104- annular convex platform, 105- rotation
Turn buckle, 106- filter cover, 107- filter screen, 108- annular ring, 109- filter hole, 110- claw, 111- mesh wall, 2- lower casing
Body, 201- shielding case, 3- circuit board, 301- laser emission element, 302- communication component, 303- cover board, 304- bracket, 305-
One through-hole, the second through-hole of 306-, 307- air flow passage, 308- airtight cavity, 4- suction element.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is further described.
Fig. 1 and Fig. 2 are please referred to, the embodiments of the present invention provide a kind of air quality detecting device, main to apply
In in the vehicles such as kart, car, bus, truck or lorry, which includes by upper casing
Body 1, lower case 2, circuit board 3 and suction element 4, the upper housing 1 and the lid of the lower case 2 close connection and form device noumenon,
The circuit board 3 and the suction element 4 are set in described device ontology.
Referring to FIG. 3, described device body exterior is equipped with air inlet 101 and venthole 102, the air inlet 101 and institute
Stating venthole can be set in also being can be set on the upper housing 1 in the lower case 2, the air inlet 101 and described
Venthole 102 can be set in the same side of described device ontology, also can be set in the not ipsilateral of device noumenon, does not do herein
It limits, is only all set on the upper housing 1 and is illustrated with the air inlet 101 and the venthole 102 in the present embodiment
Illustrate, and venthole 102 described in the present embodiment is tubular structure, the upper end extends to the outside of upper housing 1, so as to and it is external
Intubation connection.
It is equipped with filter cover 106 on the outside of the air inlet 101, the mesh for air inlet is equipped on the outside of the filter cover 106
Wall 111,111 top of mesh wall are equipped with several filter hole 109, for bulky grains such as soil, hair, fabrics in air
Impurity carries out primary filtration.Filter cover 106 and mesh wall 111 are integrally formed in the present embodiment.
101 edge of air inlet is equipped with a circle annular convex platform 104, lays filter screen on the annular convex platform 104
107, the filter cover 106 is interior to be equipped with annular ring 108, and the filter cover 106 covers conjunction to the venthole 101 and makes the ring
The filter screen 107 is pressed on the annular convex platform 104 by shape circle 108, and the aperture of several filter hole 109 is greater than described
Filter screen 107, in order to improve high temperature resistance and waterproof performance, the filter screen 107 is stainless steel material, the filter screen
107 particulate matters slightly smaller for secondary filter partial size, protect the air quality detecting device.
For the ease of replacing to the filter screen 107, the air inlet 101 and the filter cover 106 are detachable
Connection.Several claws 110 are provided in the surrounding of the filter cover 106 in the present embodiment, the annular convex platform 104 is set to
The air inlet 101 position corresponding with the filter cover 106,104 surrounding of annular convex platform be provided with it is several with it is described
The rotary buckle 105 that claw 110 matches.The strainer is realized by the cooperation of the claw 110 and the rotary buckle 105
Fixation and disassembly between lid 106 and the air inlet 101.
Referring to FIG. 4, be equipped with bypass channel 103 in the upper housing 1, the bypass channel 103 be enclosed by baffle and
At trench structure, the suction element 4 be side air-out formula suction element, be electrically connected the circuit board 3, the suction element 4
It can choose as air blower, the suction element 4 is contained in the upper housing 1 and is located at 103 side of bypass channel, institute
It states suction element 4 and is fixed on 3 side of circuit board, and the bypass channel 103 is covered and closed by the circuit board 3, the bypass
103 inlet end of channel is oppositely arranged with 4 outlet side of suction element, and 103 outlet side of bypass channel is set to the dress
It sets immediately below venthole 102 and the two is linked together, 102 one of bypass channel 103 described in the present embodiment and the venthole
Molding.
Fig. 5 and Fig. 6 are please referred to, 3 other side of circuit board is equipped with airtight cavity 308, and the circuit board 3 is sent out including laser
Unit 301 and photodetector are penetrated, the airtight cavity 308 includes bracket 304 and cover board 303, the laser emission element 301
It is fixed on the bracket 304, the cover board 303 is covered on the bracket 304 and forms the airtight cavity 308, the laser
Transmitting unit 301 and the photodetector are sealed in the airtight cavity 308, set gas in the airtight cavity 308
Circulation passage 307 is flowed, the photodetector is set in the air flow passage 307, and the laser emission element 301 is sent out
The laser direction penetrated intersects with the air flow passage 307, and the laser irradiation tested air-flow that laser emission element 301 emits is simultaneously
It scatters, the photoelectric sensor receives the light scattered on dust particles, and the circuit board 3 further includes communication component 302, uses
In transmission testing result.
At least one adding thermal resistance is respectively arranged in the two sides of photodetector described in the air flow passage 307, to prevent
Only the vapor in tested air-flow condenses on photodetector, influences the detection accuracy of photodetector.The airtight cavity
308 outlet side side is equipped with temperature sensor, the adding thermal resistance heating temperature that can be detected according to the temperature sensor
The adding thermal resistance heating power is controlled, to prevent the temperature of circuit board 3 excessively high, influences the service life of electronic component.
First through hole 305 and the second through-hole 306 are opened up on the circuit board 3, the first through hole 305 is set to the electricity
Road plate 3 and the 4 outlet side relative position of suction element, and the inlet end of the first through hole 305 and the airtight cavity 308
Relatively, for receiving air to be measured, second through-hole 306 is set to the circuit board 3 and 308 outlet side of airtight cavity
Relative position, and second through-hole 306 is connected to the venthole 102, for exporting the air after being measured, the present embodiment
Described in the second through-hole 306 and 102 consistency from top to bottom of venthole.
In order to improve the interference free performance of device, a shielding case 201 is provided between circuit board 3 and lower case 2.In order to
Prevent light from reflecting the influence caused by testing result, by circuit board 3, laser emission element 301, photoelectric sensor, suction element 4
And communication component 302 is disposed as black.In order to improve the leakproofness of device noumenon and reduce the vibration of device, in pumping member
The air inlet surrounding of 4 top surface of part is provided with a circle foam, is provided with one layer of foam in the bottom of suction element 4.
This implements a kind of detection process of novel air quality detecting device are as follows: referring to FIG. 1, described in tested air-flow process
Filter hole 109 is once filtered, and the large granular impurities such as soil, hair, fabric are filtered out, into the mesh wall 111,
Secondary filter is carried out by the filter screen 107 inside the filter cover 106, filters out the slightly smaller particulate matter of filter partial size, then
Tested air-flow is sucked by 4 inlet end of suction element, and is shunted after the outflow of 4 outlet side of suction element.
A part of air flow to be measured is to 103 inlet end of bypass channel, then via 103 outlet side of bypass channel
It flows into the venthole 102 and is expelled directly out the air quality detecting device, another part air to be measured passes through the circuit board 3
On first through hole 305 enter 308 inlet end of airtight cavity, it is described when flowing subsequently through the air flow passage 307
Laser emission element 301 irradiates and generates scattering light, and the photodetector receives scattering light and exports electric signal, the electricity
Processing unit on road plate 3 calculates dust concentration according to the electric signal of output.Tested air-flow is located at the photoelectricity simultaneously
The adding thermal resistance of detector two sides heats, and to prevent tested air-flow from condensing on the photodetector, influences the light
The detection accuracy of electric explorer.Tested air-flow reaches 308 outlet side of airtight cavity after flowing through the photodetector, and leads to
The second through-hole 306 crossed on the circuit board 3 reaches venthole 102, and flows out air quality detecting device through venthole 102.
103 pairs of by-pass flow channel high speed air to be measured shunts, make to stablize air to be measured into airtight cavity 308 described in people for inspection
Survey, improve the accuracy of testing result, 109 spherical structure of the second strainer, effectively filtering stop granule foreign, prevent by
The granule foreign surveyed in air-flow blocks the air inlet 101, extends the service life of air quality detecting device.
Herein, the nouns of locality such as related front, rear, top, and bottom are to be located in figure with components in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (11)
1. a kind of air quality detecting device, it is characterised in that: including upper housing, the lower case being connect with the upper housing, with
And it is set to the circuit board between upper housing and the lower case, and air inlet and venthole are equipped with outside the upper housing, it is described
Bypass channel is equipped with inside upper housing described in circuit board side.
2. a kind of air quality detecting device as described in claim 1, it is characterised in that the bypass channel inlet end and institute
Air inlet connection is stated, outlet side is connected to the venthole, and the circuit board other side is equipped with airtight cavity, the airtight cavity
Inlet end is connected to the air inlet, and outlet side is connected to the venthole, and tested air-flow is entered by the air inlet, a part
Airtight cavity is branched to for being detected and being discharged by the venthole by the intracorporal detector of the closed chamber, another part shunts
It is discharged to the bypass runner by the venthole.
3. a kind of air quality detecting device as claimed in claim 2, it is characterised in that: including side air-out formula suction element,
The suction element is set between the upper housing and the circuit board, and the suction element is electrically connected the circuit board, and
The suction element inlet end connects the air inlet, outlet side be separately connected the airtight cavity inlet end and bypass channel into
Gas end.
4. a kind of air quality detecting device as claimed in claim 3, it is characterised in that: the bypass channel is to be enclosed by baffle
Trench structure made of conjunction, the bypass channel notch are closed by the circuit board cover, the bypass channel inlet end and the pumping
Gas element outlet side is connected, and outlet side is set to immediately below the venthole and is linked together with it.
5. a kind of air quality detecting device as claimed in claim 3, it is characterised in that: it is logical that the circuit board is equipped with first
Hole and the second through-hole, the first through hole are set to the circuit board and suction element outlet side relative position, and described
First through hole is opposite with the inlet end of the airtight cavity, and second through-hole is set to the circuit board and the airtight cavity
Outlet side relative position, and second through-hole is connected to the venthole.
6. a kind of air quality detecting device as described in claim 1, it is characterised in that: strainer is arranged on the outside of the air inlet
Lid, the filter cover inside are equipped with filter screen, and outside is equipped with mesh wall, and the top of the mesh wall is equipped with several filter hole, institute
The aperture for stating several filter hole is greater than the aperture of the filter screen.
7. a kind of air quality detecting device as claimed in claim 6, it is characterised in that: the air inlet and the filter cover
To be detachably connected.
8. a kind of air quality detecting device as claimed in claim 7, it is characterised in that: if the filter cover is surrounded by
Dry claw, position corresponding with the filter cover is equipped with an annular for protruding from the upper casing external surface on the air inlet
Boss, the annular convex platform are surrounded by several rotary buckles matched with the claw, pass through the claw and the rotation
Turn the fixation and disassembly between the cooperation realization filter cover of buckle and the air inlet.
9. a kind of air quality detecting device as claimed in claim 2, it is characterised in that: the circuit board is sent out equipped with laser
Unit and the detector are penetrated, the detector is photodetector, and the laser emission element and the photodetector are equal
It is sealed in the airtight cavity, air flow passage is set in the airtight cavity, the photodetector is set to described
In air flow passage, at least one adding thermal resistance is respectively arranged in the two sides of photodetector described in the air flow passage,
To prevent the vapor in tested air-flow from condensing on photodetector.
10. a kind of air quality detecting device as claimed in claim 9, it is characterised in that: the outlet side of the airtight cavity
Side is equipped with the temperature sensor for detecting the adding thermal resistance heating temperature.
11. a kind of air quality detecting device as claimed in claim 9, it is characterised in that: the airtight cavity includes bracket
And cover board, the laser emission element are fixed on the bracket, the cover plate lid is together in the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821962405.3U CN209247733U (en) | 2018-11-26 | 2018-11-26 | A kind of air quality detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821962405.3U CN209247733U (en) | 2018-11-26 | 2018-11-26 | A kind of air quality detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209247733U true CN209247733U (en) | 2019-08-13 |
Family
ID=67529575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821962405.3U Active CN209247733U (en) | 2018-11-26 | 2018-11-26 | A kind of air quality detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209247733U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866366A (en) * | 2021-10-18 | 2021-12-31 | 浙江吉利控股集团有限公司 | Vehicle and air detector thereof |
| CN114705814A (en) * | 2022-05-24 | 2022-07-05 | 安徽气象信息有限公司 | Equipment for accurately measuring air quality and measuring method thereof |
-
2018
- 2018-11-26 CN CN201821962405.3U patent/CN209247733U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866366A (en) * | 2021-10-18 | 2021-12-31 | 浙江吉利控股集团有限公司 | Vehicle and air detector thereof |
| CN114705814A (en) * | 2022-05-24 | 2022-07-05 | 安徽气象信息有限公司 | Equipment for accurately measuring air quality and measuring method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209247733U (en) | A kind of air quality detecting device | |
| CN210166360U (en) | Air quality detection device for vehicle | |
| CN208888103U (en) | A kind of air quality detecting device and the vehicles | |
| CN206470249U (en) | A kind of binary channels air quality detecting device | |
| CN207182602U (en) | New-energy automobile fire detection alarm | |
| KR102069363B1 (en) | Fine dust measure and abatement system for automobile | |
| CN209167066U (en) | A kind of novel air corpuscular counter | |
| CN211292462U (en) | Aerosol particle collecting and sampling system | |
| CN208476735U (en) | A kind of binary channels sensor of dust concentration and equipment | |
| CN106950335A (en) | A kind of Indoor Environment Detection equipment based on fine particle | |
| CN205879744U (en) | Shielding formula dust concentration laser sensors check out test set | |
| CN209589765U (en) | A kind of PM2.5 monitoring modular | |
| CN205080026U (en) | Highly reliable car air matter level sensor and vehicle air conditioner filter | |
| CN207575994U (en) | The filter of dust accumulation can be detected automatically | |
| CN107255609B (en) | Laser PM2.5 sensor package apparatus and automobile | |
| CN207516230U (en) | A kind of air quality detecting device and the vehicles | |
| CN207423748U (en) | A kind of vehicle-mounted laser dust sensor | |
| CN108613907A (en) | Particulate matter detection means | |
| CN205494720U (en) | Empty gas detection in area surveys nose cup of device | |
| CN208420627U (en) | Particulate matter detection means | |
| CN206848123U (en) | A kind of air suspended particulate detection means | |
| CN113418840A (en) | Gas detection device and vehicle-mounted tail gas detection system | |
| CN108036481A (en) | A kind of air quality detecting device and the vehicles | |
| CN209296674U (en) | Portable vehicle with air quality detecting device | |
| CN206420514U (en) | A kind of vehicle exhaust sensed flow meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430000, No. three, No. 3, Fenghuang garden, Phoenix Industrial Park, East Lake New Technology Development Zone, Hubei, Wuhan Patentee after: Sifang Optoelectronic Co.,Ltd. Address before: 430000, No. three, No. 3, Fenghuang garden, Phoenix Industrial Park, East Lake New Technology Development Zone, Hubei, Wuhan Patentee before: Wuhan Cubic Optoelectronics Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221208 Address after: 430070 Building 5, No. 3, Fenghuangyuan Third Road, Phoenix Industrial Park, Wuhan East Lake New Technology Development Zone, Wuhan, Hubei Province Patentee after: Wuhan Sifang Automotive Electronics Co.,Ltd. Address before: No.3, Fenghuangyuan Third Road, Fenghuangyuan Industrial Park, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee before: Sifang Optoelectronic Co.,Ltd. |
|
| TR01 | Transfer of patent right |