CN206410973U - A kind of accumulatingdust laser module for laser dust sensor - Google Patents
A kind of accumulatingdust laser module for laser dust sensor Download PDFInfo
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- CN206410973U CN206410973U CN201720033442.5U CN201720033442U CN206410973U CN 206410973 U CN206410973 U CN 206410973U CN 201720033442 U CN201720033442 U CN 201720033442U CN 206410973 U CN206410973 U CN 206410973U
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- accumulatingdust
- baffle plate
- emitting hole
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Abstract
The utility model discloses a kind of accumulatingdust laser module for laser dust sensor, including laser module fixing base, the laser module fixing base is provided with laser emitting hole, tunnel inlet, ducting outlet, photodiode hole position, light sensitive area, accumulatingdust baffle plate is provided with the outside of the laser emitting hole, the height of the accumulatingdust baffle plate is higher than the height in laser emitting hole, prevents dust in laser emitting hole building up inside.The utility model before the laser emitting hole of laser module fixing base by increasing accumulatingdust baffle plate, the dust in air is prevented to be fallen into when flowing through light sensitive area in laser emitting hole, the contaminated degree with dust stratification of optics in laser emitting hole is effectively reduced, the service life of laser dust sensor is extended.
Description
Technical field
The utility model is related to laser dust sensor accumulatingdust technical field, and in particular to one kind is used for laser dust and passed
The accumulatingdust laser module of sensor.
Background technology
With the continuous deterioration of environment, turn into every profession and trade field increasingly to the detection of dust concentration so that people live must
Need, and demand will be increasing, and laser dust sensor is used as the kernel component of laser dust detecting instrument, its property
There can be conclusive influence to the quality of detecting instrument.But laser dust sensor is working long hours or dense in dust
When in the high working environment of degree, particulate matter can be gathered in sensor internal, be sticked on light source, light path and photodetector,
Cause to be particularly easy to produce product inside sensor optical path and optical element contaminated or even serious dust stratification, especially laser emitting hole
Ash, when there is dust deposit, the penetrance of optical mirror slip can be reduced because of the obstruction of dust, cause to penetrate the excitation of optical mirror slip
Light source amount is reduced, and the light path of laser can change, and causes laser to produce abnormal reflection so that the collection of optical signal is missed
Difference, causes the measurement result of sensor inaccurate, abnormal or even fails, have a strong impact on the normal service life of sensor.
Therefore, the domestic research for having carried out laser dust sensor accumulatingdust correlation technique：Such as Chinese invention patent
CN20154595.8 discloses a kind of laser dust detection device of anti-dust stratification interference, using preceding scattering detection method, using poly-
The configuration of focus lens and polynary fiber distribution plate, realizes the separation of scattered light and transmitted light, improves accuracy of detection；And utilize dust stratification
Glass is compensated, in real time detection dust stratification degree, mitigate the influence of dust stratification.Although the device alleviates light path window dust stratification to scattering
Light, transmitted light influence, improve accuracy of detection, and extend the service life of sensor to a certain extent, but still suffer from
Problems with：1st, the device need to install the elements such as condenser lens, polynary fiber distribution plate, compensation glass, and cost of manufacture is high, installs
Complex process；2nd, the configuration of each element and debugging process difficulty are big, time-consuming long, and the quality of operating personnel are proposed higher
It is required that；3rd, after the device works long hours, dust stratification is difficult to clear up, and the compensation effect of dust stratification compensation glass elements can be reduced, and be sensed
The measurement result of device can produce influence.
Because laser dust sensor accumulatingdust technology is present, above-mentioned cost of manufacture is high, mounting process is complicated, operation difficulty
Greatly, the problems such as difficult cleaning, further genralrlization and the application of laser dust detecting instrument are constrained, therefore is badly in need of providing a kind of principle
The anti-dust stratification technology of laser dust sensor that is clear, simple in construction, easily nursing, for avoiding influence of the dust stratification to sensor, especially
It is to solve to produce influence of the dust stratification to light path inside laser emitting hole, improves the accuracy of detection of laser dust sensor, extension
The service life of laser dust sensor, the dust detection for making laser dust sensor be applied under various environment.
The content of the invention
The purpose of this utility model be provide a kind of accumulatingdust laser module for laser dust sensor, by
Increase accumulatingdust baffle plate near laser emitting hole, can effectively solve optics in laser emitting hole contaminated serious with dust stratification
Problem, extends the service life of sensor.
To achieve the above object, the technical solution adopted in the utility model is：A kind of preventing for laser dust sensor
Dust stratification laser module, including laser module fixing base, the laser module fixing base provided with laser emitting hole, tunnel inlet,
Ducting outlet, photodiode hole position, light sensitive area, it is characterised in that：Accumulatingdust baffle plate is provided with the outside of the laser emitting hole,
The height of the accumulatingdust baffle plate is higher than the height in laser emitting hole, prevents dust in laser emitting hole building up inside.
Further, the accumulatingdust baffle plate is provided with the outside of card article, the laser emitting hole close to laser emitting hole side
Provided with the groove matched with card article so that the accumulatingdust baffle plate is fastened on the outside of laser emitting hole.
Further, the accumulatingdust baffle plate is one, is arranged on laser emitting hole close to the side of tunnel inlet.
Further, the accumulatingdust baffle plate is two, and two accumulatingdust baffle plates are symmetricly set on the two of laser emitting hole
Side.
Further, the accumulatingdust baffle plate is square baffle plate.
Further, the accumulatingdust baffle plate is parallel with laser emitting direction.
Further, the front end of the accumulatingdust baffle plate is provided with the radian bent into laser emitting hole.
Further, the accumulatingdust baffle plate is tilted towards LASER Light Source exit direction, and angle of inclination is less than 15 °.
Further, the accumulatingdust baffle plate is curved baffle.
Compared with prior art, the beneficial effects of the utility model are：
1st, the utility model sets accumulatingdust baffle plate on the outside of laser emitting hole, is ensureing that light sensitive area air circulation is normal
In the case of, influence of the dust stratification to sensor is effectively alleviated, the anti-dust stratification interference performance of sensor, testing result is improved
It is more stable reliable.
2nd, the utility model accumulatingdust baffle plate is fastened on the outside of laser emitting hole, convenient disassembly, and easy to clean dust stratification, is safeguarded
It is simple with maintenance, extend the service life of laser dust sensor.
3rd, the utility model principle is clear, simple in construction, cheap, it is to avoid existing anti-dust stratification laser dust detection dress
Putting the complicated technology such as needs to configure, debugs.
4th, laser dust sensor after improving is due to high with accuracy of detection, the advantages of anti-dust stratification interference performance is strong, energy
Reliable and stable works in various environment, the working environment for the high concentration dust that is particularly suitable for use in, and disclosure satisfy that different application
Close the demand of detection terminal.
Brief description of the drawings
Fig. 1 is a kind of structural representation of accumulatingdust laser module for laser dust sensor of the utility model；
Fig. 2 is the structural representation of the utility model accumulatingdust baffle plate and connecting portion on the outside of laser emitting hole；
Fig. 3-5 is sectional view of the utility model accumulatingdust baffle plate on AA directions；
Fig. 6 is a kind of structure of accumulatingdust laser module for laser dust sensor of the utility model embodiment 6
Schematic diagram；
In figure：1st, laser module fixing base；2nd, laser emitting hole；3rd, tunnel inlet；4th, ducting outlet；5th, photodiode
Hole position；6th, light sensitive area；7th, accumulatingdust baffle plate；8th, card article；9th, groove.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical solution of the utility model is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole embodiments.
Based on the embodiment in the utility model, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of the utility model protection.
Embodiment 1：As shown in figure 1, a kind of accumulatingdust laser module for laser dust sensor, including laser module
Fixed seat, the laser module fixing base is provided with laser emitting hole 2, tunnel inlet 3, ducting outlet 4, photodiode hole position
5th, accumulatingdust baffle plate 7 is provided with light sensitive area 6, the laser emitting hole 2, the height of the accumulatingdust baffle plate 7 goes out higher than laser
The height of perforation 2, prevents dust in the building up inside of laser emitting hole 2.The accumulatingdust baffle plate 7 is a square baffle plate, fixed
Laser emitting hole 2 is arranged on close to the side of tunnel inlet 3, the accumulatingdust baffle plate 7 is parallel with laser emitting direction.With ash
The air of dirt enters light sensitive area 6 by tunnel inlet 3 along air channel, and due to there is the stop of accumulatingdust baffle plate 7, air is main
Cross laser emitting hole 2 and flowed out by the domain of light sensitive area 6 before accumulatingdust baffle plate 7 through ducting outlet 4, most of dust can heap
Product is in accumulatingdust baffle plate 7 close to the side of tunnel inlet 3, and less air is entered inside laser emitting hole 2, and this is in very big journey
Probability of the air in the building up inside of laser emitting hole 2 is reduced on degree, pollution of the dust stratification to light path is alleviated, effectively prevent product
Influence of the ash interference to laser dust sensor so that testing result is more stable reliable, extends the work of laser dust sensor
Make the life-span.
Embodiment 2：As shown in Fig. 2 a kind of accumulatingdust laser module for laser dust sensor, its laser emitting hole
2 are provided with square accumulatingdust baffle plate 7 close to the side of tunnel inlet 3, and the accumulatingdust baffle plate 7 is set close to the side of laser emitting hole 2
There is a card article 8, the outside of laser emitting hole 2 is provided with the groove 9 matched with card article 8 so that the accumulatingdust baffle plate 7 engages
In the outside of laser emitting hole 2.This have the advantage that：Accumulatingdust baffle plate 7 is fastened on the outside of laser emitting hole 2, installation side
Just, and when the dust stratification produced after working long hours is more, the dust stratification in the outside of laser emitting hole 2 can be directly cleared up, will can also be prevented
Dust stratification baffle plate 7 disassembles cleaning so that the care and maintenance of laser sensor becomes extremely simple, further extends sensing
The service life of device.
Embodiment 3：As shown in figure 3, a kind of accumulatingdust laser module for laser dust sensor, its laser emitting hole
2 are provided with square accumulatingdust baffle plate 7 close to the side of tunnel inlet 3, and the accumulatingdust baffle plate 7 is parallel with laser emitting direction, and
The front end of accumulatingdust baffle plate 7 is provided with the radian bent into laser emitting hole 2.The difference of the present embodiment and above-described embodiment only exists
Different in the front-end architecture of accumulatingdust baffle plate 7, the present embodiment is arranged to curved into laser emitting hole 2 in the front end of accumulatingdust baffle plate 7
Bent radian shape, accumulatingdust is better, also, when the air stream with dust is by the domain of light sensitive area 6 before accumulatingdust baffle plate 7
When will be flowed out along radian through ducting outlet 4, effectively prevent the stop due to accumulatingdust baffle plate 7 to the air flow of light sensitive area 6
Influence, it is ensured that air normally circulates so that testing result is more stable reliable.
Embodiment 4：As shown in figure 4, the present embodiment is used for the accumulatingdust laser module and above-mentioned reality of laser dust sensor
Apply differing only in for example, laser emitting hole 2 is close to the accumulatingdust baffle plate 7 that the side of tunnel inlet 3 is set for one towards laser
The inclined square baffle plate of light source exit direction, angle of inclination is less than 15 °, and it is acted on embodiment 3 in the front end of accumulatingdust baffle plate 7
The effect for being set to radian shape is identical.
Embodiment 5：As shown in figure 5, the present embodiment is used for the accumulatingdust laser module and above-mentioned reality of laser dust sensor
Differing only in for example is applied, laser emitting hole 2 is provided with arc accumulatingdust baffle plate 7 close to the side of tunnel inlet 3, it is acted on and real
Apply example 3 identical in the effect that the front end of accumulatingdust baffle plate 7 is set to radian shape.
Embodiment 6：As shown in fig. 6, the present embodiment is used for the accumulatingdust laser module and above-mentioned reality of laser dust sensor
Apply differing only in for example：The accumulatingdust baffle plate 7 is two, and one of accumulatingdust baffle plate 7 is arranged on laser emitting hole 2 and leaned on
The side of nearly tunnel inlet 3, in addition accumulatingdust baffle plate 7 be symmetricly set on laser emitting hole 2 close to the side of ducting outlet 4.This
Sample do relative to only laser emitting hole 2 close to tunnel inlet 3 side set a baffle plate be advantageous in that：More effectively prevent
Only dusty air, which is flowed across, produces electrostatic adherence on the inside of the baffle plate even in laser emitting hole 2 after accumulatingdust baffle plate 7 so that
Accumulatingdust effect is more preferable.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (9)
1. a kind of accumulatingdust laser module for laser dust sensor, including laser module fixing base（1）, the mode of laser
Group fixed seat（1）It is provided with laser emitting hole（2）, tunnel inlet（3）, ducting outlet（4）, photodiode hole position（5）, it is photosensitive
Sensillary area（6）, it is characterised in that：The laser emitting hole（2）Outside is provided with accumulatingdust baffle plate（7）, the accumulatingdust baffle plate（7）'s
Highly it is higher than laser emitting hole（2）Height, prevent dust in laser emitting hole（2）Building up inside.
2. a kind of accumulatingdust laser module for laser dust sensor according to claim 1, it is characterised in that：Institute
State accumulatingdust baffle plate（7）Close to laser emitting hole（2）Side is provided with card article（8）, the laser emitting hole（2）Outside is provided with and card
Bar（8）The groove matched（9）So that the accumulatingdust baffle plate（7）It is fastened on laser emitting hole（2）Outside.
3. a kind of accumulatingdust laser module for laser dust sensor according to claim 1 or 2, its feature exists
In：The accumulatingdust baffle plate（7）For one, laser emitting hole is arranged on（2）Close to tunnel inlet（3）Side.
4. a kind of accumulatingdust laser module for laser dust sensor according to claim 1 or 2, its feature exists
In：The accumulatingdust baffle plate（7）For two, two accumulatingdust baffle plates（7）It is symmetricly set on laser emitting hole（2）Both sides.
5. a kind of accumulatingdust laser module for laser dust sensor according to claim 1 or 2, its feature exists
In：The accumulatingdust baffle plate（7）For square baffle plate.
6. a kind of accumulatingdust laser module for laser dust sensor according to claim 1 or 2, its feature exists
In：The accumulatingdust baffle plate（7）It is parallel with laser emitting direction.
7. a kind of accumulatingdust laser module for laser dust sensor according to claim 1 or 2, its feature exists
In：The accumulatingdust baffle plate（7）Front end be provided with to laser emitting hole（2）The radian of interior bending.
8. a kind of accumulatingdust laser module for laser dust sensor according to claim 1 or 2, its feature exists
In：The accumulatingdust baffle plate（7）Tilted towards LASER Light Source exit direction, angle of inclination is less than 15 °.
9. a kind of accumulatingdust laser module for laser dust sensor according to claim 1 or 2, its feature exists
In：The accumulatingdust baffle plate（7）For curved baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720033442.5U CN206410973U (en) | 2017-01-12 | 2017-01-12 | A kind of accumulatingdust laser module for laser dust sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720033442.5U CN206410973U (en) | 2017-01-12 | 2017-01-12 | A kind of accumulatingdust laser module for laser dust sensor |
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| Publication Number | Publication Date |
|---|---|
| CN206410973U true CN206410973U (en) | 2017-08-15 |
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ID=59555167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720033442.5U Active CN206410973U (en) | 2017-01-12 | 2017-01-12 | A kind of accumulatingdust laser module for laser dust sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115213A (en) * | 2017-12-25 | 2018-06-05 | 北京中电科电子装备有限公司 | A kind of gas shield device and with its blade detection, scribing machine |
| CN111220576A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Laser self-checking type dust concentration detection device and self-checking method thereof |
| CN112649333A (en) * | 2019-10-09 | 2021-04-13 | 无锡市寨尔空气净化设备有限公司 | Single-channel air quality detection device |
-
2017
- 2017-01-12 CN CN201720033442.5U patent/CN206410973U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115213A (en) * | 2017-12-25 | 2018-06-05 | 北京中电科电子装备有限公司 | A kind of gas shield device and with its blade detection, scribing machine |
| CN112649333A (en) * | 2019-10-09 | 2021-04-13 | 无锡市寨尔空气净化设备有限公司 | Single-channel air quality detection device |
| CN111220576A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Laser self-checking type dust concentration detection device and self-checking method thereof |
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