CN204556452U - A kind of laser dust sensor adopting aerofoil fan - Google Patents
A kind of laser dust sensor adopting aerofoil fan Download PDFInfo
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- CN204556452U CN204556452U CN201520058933.6U CN201520058933U CN204556452U CN 204556452 U CN204556452 U CN 204556452U CN 201520058933 U CN201520058933 U CN 201520058933U CN 204556452 U CN204556452 U CN 204556452U
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- aerofoil fan
- lower casing
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- emission element
- sensor
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Abstract
The utility model relates to a kind of laser dust sensor adopting aerofoil fan, comprises PCB, lower casing, upper casing, laser emission element, condenser lens, aerofoil fan and radome.Described upper casing and lower casing are mould processing, form a laser emission element holder, a condenser lens holder and an air ventilation passage after installing combination.The gas outlet being arranged at lower casing is connected with aerofoil fan, circulates for making the gas with dust; Described radome is for shielding the noise that in PCB, components and parts bring measuring-signal.The utility model adopts aerofoil fan to solve traditional use air pump and to bleed short problem in sensor serviceable life of bringing; Adopt radome can get rid of the interference of noise, improve the precision of measurement; The mould and die accuracy that is fitted through of laser emission element and condenser lens ensures fixed position, improves the consistance of sensor batch production, greatly enhances productivity and produce disposable qualification rate.
Description
Technical field
The utility model relates to a kind of laser dust sensor, particularly relates to a kind of laser dust sensor adopting aerofoil fan.
Background technology
Laser dust monitor to be widely used in the industry fields such as thermoelectricity, chemical industry, waste incineration in fume emission solid particulate matter as the detection of dust.And along with the deterioration of environment, the weather phenomena such as haze are also more and more common, the detection of dust concentration become increasingly to the needs of daily life, and demand will be increasing.And laser dust sensor is the kernel component of laser dust monitor, the quality of its performance on laser dust monitor product has conclusive impact.
And traditional laser dust sensor suction element employing is that air pump is bled, bleed as adopted air pump, according to the type selecting of air pump and the operation characteristic of laser dust monitor, need long-play, and operation can cause air pump to generate heat for a long time, very easily burn out after air pump heating, thus cause the serviceable life of laser dust sensor very short; Meanwhile, in traditional similar dust sensor, if the larger sensor cost having high group only is higher, raises the price comparatively large, and be unfavorable for mass automatic production, be also unfavorable for the application popularization of the particle concentration detection technique as air quality indexes.
Summary of the invention
The utility model fundamental purpose is to provide a kind of laser dust sensor adopting aerofoil fan, adopts aerofoil fan to solve traditional use air pump and to bleed short problem in sensor serviceable life of bringing; Adopt radome can get rid of the interference of noise, improve the precision of measurement; The mould and die accuracy that is fitted through of laser emission element and condenser lens ensures fixed position, improves the consistance of sensor batch production, greatly enhances productivity and produce disposable qualification rate.
The utility model technical solution problem adopts following technical scheme:
Adopt a laser dust sensor for aerofoil fan, comprise PCB, the lower casing be screwed in PCB, the upper casing equipped with lower casing;
Described lower casing is provided with and is fixed on the upper laser emission element of lower casing by laser emission element holder and is fixed on lower casing by focus lens holder and is positioned at the condenser lens in laser emission element front; The air ventilation passage one end be arranged on lower casing is venthole, the other end be arranged on the enterprising pore of upper casing and communicate; The external aerofoil fan in venthole place.Air ventilation passage is provided with photoelectric sensor emptiness avoiding hole;
Described PCB is provided with and is positioned at immediately below photoelectric sensor emptiness avoiding hole for the photoelectric sensor that is received in the reacted laser signal of gas channel and the electronic component installing zone be connected with photoelectric sensor 140 for installing signal processing component;
At above-mentioned a kind of laser dust sensor adopting aerofoil fan, described radome is provided with air admission hole empty avoiding for wrapping up the radome of a part for upper casing also to comprise one, and described air admission hole empty avoiding overlaps with the air admission hole of upper casing.
At above-mentioned a kind of laser dust sensor adopting aerofoil fan, described PCB is also provided with two slots of external data line when using for photoelectric sensor.
Therefore, the utility model tool has the following advantages: solve traditional use air pump and to bleed short problem in sensor serviceable life of bringing; Adopt radome can get rid of the interference of noise, improve the precision of measurement; The mould and die accuracy that is fitted through of laser emission element and condenser lens ensures fixed position, improves the consistance of sensor batch production, greatly enhances productivity and produce disposable qualification rate.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation adopting the laser dust sensor of aerofoil fan.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises PCB 1, lower casing 2, lower casing 4, laser emission element 3, condenser lens 7, aerofoil fan 6 and radome 5.
Introduce concrete structure successively below:
One, PCB is provided with:
Two slots 110,130: external data line when using for sensor;
One electronic component installing zone 120: the electronic component in all signal processing components is installed in electronic component installing zone and does not expose, it should be noted that, the signal processing component be connected with photoelectric sensor 140 adopted in the utility model is all present known conventional signal processing units, and its principle is all light signal is converted to electric signal to carry out analyzing and processing after carrying out filter and amplification;
The laser that described laser emission element is launched reacts through the laggard air inlet chamber of lens focus, and the photoelectric sensor be arranged in PCB receives this laser signal, and signal is sent to PCB and carries out calculation process by sensor
One photoelectric sensor 140: for being received in reacted laser signal in gas channel.
Two, lower casing is provided with:
One electronic component installing zone empty avoiding 210: the projection being installed on the electronic devices and components in PCB for empty avoiding; One laser emission element holder 220: condenser lens holder 230: air ventilation passage 240: photoelectric sensor emptiness avoiding hole 250: venthole 260:
Three, upper casing 4 coordinates with lower casing 2 and is provided with an air admission hole 410: radome 5 is provided with an air admission hole empty avoiding 510; Lower casing 2 is screwed in PCB 1, laser emission element 3 is fixed on lower casing 2 by laser emission element holder 220, condenser lens 7 is fixed on lower casing 2 by focus lens holder 230, upper casing 4 and lower casing 2 are equipped with, radome 5 installation kit wraps a part for shell 4, and air admission hole empty avoiding 510 is overlapped with the air admission hole 410 of upper casing 4, the external aerofoil fan 6 in venthole 260 place on lower casing 2.
Four, during work, dust crosses air ventilation passage 240 by aerofoil fan 6 suction through air admission hole 410, the laser that laser emission element is launched reacts through the laggard air inlet chamber of lens focus, the photoelectric sensor be arranged in PCB receives this laser signal, the signal processing component that signal is sent to PCB by sensor carries out calculation process, and dust is finally extracted out by aerofoil fan 6 and discharged through venthole 260.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (3)
1. one kind adopts the laser dust sensor of aerofoil fan, it is characterized in that, comprise PCB (1), the lower casing (2) be screwed in PCB (1), the upper casing (4) equipped with lower casing (2);
Described lower casing (2) is provided with and is fixed on the upper laser emission element (3) of lower casing (2) by laser emission element holder (220) and is fixed on lower casing (2) is gone up and the condenser lens (7) being positioned at laser emission element (3) front by focus lens holder (230); Air ventilation passage (240) one end be arranged on lower casing (2) is venthole (260), the other end be arranged on upper casing (4) enterprising pore (410) and communicate; The external aerofoil fan in venthole (260) place (6); Air ventilation passage (240) is provided with photoelectric sensor emptiness avoiding hole (250);
Described PCB (1) is provided with and is positioned at immediately below photoelectric sensor emptiness avoiding hole (250) for the photoelectric sensor (140) that is received in the reacted laser signal of gas channel and the electronic component installing zone (120) be connected with photoelectric sensor (140) for installing signal processing component.
2. a kind of laser dust sensor adopting aerofoil fan according to claim 1, it is characterized in that, also comprise one for wrapping up the radome (5) of a part for upper casing (4), described radome (5) is provided with air admission hole empty avoiding (510), and described air admission hole empty avoiding (510) overlaps with the air admission hole (410) of upper casing (4).
3. a kind of laser dust sensor adopting aerofoil fan according to claim 1, it is characterized in that, described PCB is also provided with two slots (110,130) of external data line when using for photoelectric sensor (140).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520058933.6U CN204556452U (en) | 2015-01-28 | 2015-01-28 | A kind of laser dust sensor adopting aerofoil fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520058933.6U CN204556452U (en) | 2015-01-28 | 2015-01-28 | A kind of laser dust sensor adopting aerofoil fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204556452U true CN204556452U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520058933.6U Active CN204556452U (en) | 2015-01-28 | 2015-01-28 | A kind of laser dust sensor adopting aerofoil fan |
Country Status (1)
| Country | Link |
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| CN (1) | CN204556452U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572008A (en) * | 2016-03-03 | 2016-05-11 | 张银虎 | Laser dust sensor |
| CN105606506A (en) * | 2016-03-17 | 2016-05-25 | 武汉四方光电科技有限公司 | Low-noise laser dust sensor and control method |
| CN105758997A (en) * | 2016-03-28 | 2016-07-13 | 河北巢乐环保科技有限公司 | Improved harmful gas detecting equipment |
| CN106872325A (en) * | 2017-03-24 | 2017-06-20 | 北京绿刻度科技有限公司 | A kind of dust sensor |
| CN107036949A (en) * | 2017-05-19 | 2017-08-11 | 武汉四方光电科技有限公司 | Dust concentration detection means and provided with dust concentration detection means air cleaning facility |
| CN107449700A (en) * | 2016-05-30 | 2017-12-08 | 上海圆天电子科技有限公司 | PM2.5 laser sensors |
-
2015
- 2015-01-28 CN CN201520058933.6U patent/CN204556452U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572008A (en) * | 2016-03-03 | 2016-05-11 | 张银虎 | Laser dust sensor |
| CN105606506A (en) * | 2016-03-17 | 2016-05-25 | 武汉四方光电科技有限公司 | Low-noise laser dust sensor and control method |
| CN105758997A (en) * | 2016-03-28 | 2016-07-13 | 河北巢乐环保科技有限公司 | Improved harmful gas detecting equipment |
| CN107449700A (en) * | 2016-05-30 | 2017-12-08 | 上海圆天电子科技有限公司 | PM2.5 laser sensors |
| CN106872325A (en) * | 2017-03-24 | 2017-06-20 | 北京绿刻度科技有限公司 | A kind of dust sensor |
| CN107036949A (en) * | 2017-05-19 | 2017-08-11 | 武汉四方光电科技有限公司 | Dust concentration detection means and provided with dust concentration detection means air cleaning facility |
| CN107036949B (en) * | 2017-05-19 | 2024-04-26 | 四方光电股份有限公司 | Dust concentration detection device and air purification equipment with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430205, 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: 430205, 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 |