CN208255015U - A kind of oil smoke detection device - Google Patents
A kind of oil smoke detection device Download PDFInfo
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- CN208255015U CN208255015U CN201820728603.7U CN201820728603U CN208255015U CN 208255015 U CN208255015 U CN 208255015U CN 201820728603 U CN201820728603 U CN 201820728603U CN 208255015 U CN208255015 U CN 208255015U
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- sampling box
- oil smoke
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- sampling
- discharging pipe
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Abstract
The utility model discloses a kind of oil smoke detection devices, it includes optical transmitter module, optical receiver module, processing module and oil smoke sampling module, and oil smoke sampling module includes air inlet pipe, escape pipe and sampling box, and sampling box is located at outside smoke exhaust pipe；One end of air inlet pipe is connected to smoke discharging pipe, and the other end is connected to sampling box, is flowed into sampling box from smoke discharging pipe for soot gas；One end of escape pipe is connected to sampling box, and the other end is connected to smoke discharging pipe, flows out to smoke discharging pipe from sampling box for soot gas.The beneficial effects of the utility model are: making the process for detecting soot gas be in stable and closed dark surrounds by oil smoke sampling module, the interference of stray light is reduced, increases the accuracy of oil smoke detection；The intensity of the backscatter signal of forward scatter signal than in the prior art is strongly very much, and the signal light intensity of oil smoke detection greatly improved.
Description
Technical field
The utility model relates to the detection field of smoke more particularly to a kind of oil smoke detection devices.
Background technique
In food cooking and process, grease and food materials organic matter are thermally decomposed or are cracked, and in food materials
Moisture sharply vaporizes, meanwhile, burning thermal decomposition produces fine particle and pernicious gas, ultimately forms under grease and food materials high temperature
Volatile matter, aerosol, oil smoke composed by steam and fine particle.The body that oil smoke not only directly endangers the periphery masses is strong
Health, and have become the important pollution sources of urban atmosphere, and the use of accurate detection of the oil smoke detector to kitchen fumes is to control
Manage the necessary basic link of oil smoke.
205481203 U of Chinese patent Authorization Notice No. CN authorized announcement date on 08 17th, 2016, discloses one kind
Laser oil smoke sensing device, for detecting the oil smoke concentration in smoke discharging pipe, comprising: optical transmitting set, for emitting light source irradiation
Sooty substance in smoke discharging pipe；Optical receiver, for receiving by the scattering light of sooty substance in smoke discharging pipe, and according to scattering
The intensity of light and the corresponding relationship of sooty substance concentration, convert electric signal for scattered light intensity information；Follower is used for basis
The size of the electric signal calculates the concentration of sooty substance and output in smoke discharging pipe.The sensing device and its detection oil smoke side
It is smaller that there is method output signal to be influenced by site environment, and anti-pollution ability is strong, sensitivity, the higher advantage of precision.But it is above-mentioned
Oil smoke detection device in patent detects oil smoke by the way of back scattering, which has the disadvantage that 1, smoke evacuation
Stray light in pipeline easily interferes optical receiver, reduces the accuracy of oil smoke measurement；2, the signal that back scattering generates
Light is weaker, causes optical receiver received signal luminous intensity weaker.
Utility model content
The technical problems to be solved in the utility model be how to design it is a kind of reduction smoke discharging pipe in light disturbance and
Improve the oil smoke detection device of signal light intensity.
Used technical solution is the utility model in order to solve the above problem: a kind of oil smoke detection device, including light hair
Module, optical receiver module and processing module are penetrated, further includes oil smoke sampling module, the oil smoke sampling module includes air inlet pipe, goes out
Tracheae and sampling box, the sampling box are located at outside smoke exhaust pipe, for storing sampling soot gas, and for installing light emitting mould
Block and optical receiver module；One end of the air inlet pipe is connected to smoke discharging pipe, and the other end is connected to sampling box, is used for soot gas
Sampling box is flowed into from smoke discharging pipe；One end of the escape pipe is connected to sampling box, and the other end is connected to smoke discharging pipe, is used for
Soot gas flows out to smoke discharging pipe from sampling box.The process for detecting soot gas is made to be in one by oil smoke sampling module
Stable and closed dark surrounds is added significantly to oil so that external stray light is preferably minimized the interference of optical receiver module
The accuracy of cigarette detection.Oil smoke detection device in the prior art is located inside smoke discharging pipe, due to sampling box position in this patent
In outside smoke exhaust pipe, so that installation difficulty when installation oil smoke detection device reduces, it is only necessary to open two thieff hatch on smoke discharging pipe
Installation can be completed.
Preferably, the optical transmitter module includes several laser emitters, positioned at the downside of sampling box；The light connects
Receive the upside that module is located at sampling box.Optical receiver module and optical transmitter module are staggered relatively, scattering light of the angle of scattering less than 45 ° into
Enter optical receiver module so that optical receiver module it is received be forward scatter laser intensity signal, forward scatter signal is than existing
The intensity of backscatter signal in technology is strongly very much, and the signal light intensity of oil smoke detection, multiple Laser emissions greatly improved
The setting of device is so that detection light intensity further improves.
Preferably, it is octagonal box that the sampling box, which is longitudinal section, inside is coated with light absorbent, the sampling
The left side of case is connected to air inlet pipe, and the right side of the sampling box is connected to escape pipe.Inside be coated with the sampling box of light absorbent into
One step has ensured the dark surrounds in detection process, reduces the influence of external stray light.
Preferably, the optical transmitter module includes two laser emitters, it is located at the lower-left end and the right side of sampling box
Lower end.
Preferably, the sampling module further includes pumping cells, soot gas enters air inlet pipe from smoke discharging pipe, then into
Enter sampling box, enter back into escape pipe, be finally back to smoke discharging pipe, the pumping cells are used for above-mentioned soot gas flow process
Power is provided.The increases of pumping cells is so that the soot gas in soot gas and smoke discharging pipe in sampling box keeps component one
Cause property, improves sampling accuracy.
Preferably, the optical receiver module includes photoelectric sensor and condenser lens, the photoelectric sensor is located at poly-
Near the rear focus of focus lens, the signal light of optical transmitter module transmitting is after the scattering of soot gas in sampling box, scattering
Light converges on photoelectric sensor by condenser lens, and the photoelectric sensor is electrically connected with processing module.
Preferably, the optical receiver module includes Fibre Optical Sensor unit and condenser lens, the condenser lens is used for will
Collected scattered light signal converges on Fibre Optical Sensor unit, and the Fibre Optical Sensor unit includes coupled waveguide and fiber coupling
Device, the coupled waveguide are SOI ridge waveguide, end coupling of the scattered light signal that condenser lens acquires from SOI ridge waveguide
Enter SOI ridge waveguide；The fiber coupler is transmission-type fibre optic grating coupler, the scattered light signal in SOI ridge waveguide
Enter transmission-type fibre optic grating coupler by optical coupling effect, processing module is then transferred to by optical fiber and is carried out at signal
Reason.Use that Fibre Optical Sensor unit makes that processing module receives is optical signal, and processing module processing is logical in the prior art
The electric signal that photoelectric conversion obtains is crossed, small-signal will lead to due to the detection threshold of photoelectric sensor during photoelectric conversion
The distortion of detectable signal improves detection accuracy by the transmission of pure optical signal so that oil smoke detects more accurate.
Preferably, the oil smoke detection device further includes Blow off module, the Blow off module is located at optical transmitter module
Emission port and optical receiver apparatus condenser lens camera lens at, for avoiding soot gas from polluting.
Preferably, the facial canal windward that the air inlet pipe protrudes into smoke discharging pipe and is equipped with smoke discharging pipe air intake vent direction
Mouthful, the escape pipe protrudes into smoke discharging pipe and is equipped with the leeward nozzle of smoke discharging pipe direction of air outlet.When in smoke discharging pipe
When having flow of flue gas, windward side nozzle and leeward nozzle can generate pressure difference, and pressure difference can drive flue gas to enter air inlet pipe, warp
Over-sampling case, is then back in smoke discharging pipe from escape pipe.
The beneficial effects of the utility model are: 1, by oil smoke sampling module make detect soot gas process be in one
A stabilization and closed dark surrounds is added significantly to so that external stray light is preferably minimized the interference of optical receiver module
The accuracy of oil smoke detection；2, the intensity of the backscatter signal of forward scatter signal than in the prior art is strongly very much, substantially mentions
The high signal light intensity of oil smoke detection；3, by the transmission of pure optical signal so that oil smoke detection it is more accurate, improve detection
Precision；4, the installation difficulty of oil smoke detection device is reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the oil smoke detection device of the utility model.
In figure: 1, soot gas, 2, air inlet pipe, 3, sampling box, 4, escape pipe, 5, laser emitter, 6, shoot laser, 7,
Scattering laser, 8, condenser lens, 9, photoelectric sensor, 10, Blow off module, 11, smoke discharging pipe, 12, pumping cells.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, specific embodiment of the present utility model is made further specific
Explanation.
Used technical solution is the utility model in order to solve the above problem: Fig. 1 is that the oil smoke of the utility model detects
The structural schematic diagram of device, the oil smoke detection device include optical transmitter module, optical receiver module, processing module, oil smoke sampling mould
Block and Blow off module 10, oil smoke sampling module include air inlet pipe 2, escape pipe 4, sampling box 3 and pumping cells 12.Sampling box 3
In the outside of smoke exhaust pipe, it is mounted on smoke discharging pipe 11 by two sampling holes, for storing sampling soot gas 1, and
For installing optical transmitter module and optical receiver module, sampling box 3 is that longitudinal section is octagonal box, and inside is coated with extinction material
Material, the left side of sampling box 3 are connected to air inlet pipe 2, and the right side of sampling box 3 is connected to escape pipe 4, and inside is coated with adopting for light absorbent
Sample case 3 has further ensured the dark surrounds in detection process, reduces the influence of external stray light.Optical transmitter module includes two
A laser emitter 5, is located at lower-left end and the bottom righthand side of sampling box 3, and optical receiver module includes photoelectric sensor 9 and focuses
Lens 8, the lens barrel of condenser lens 8 are opened on the surface of sampling box 3, and photoelectric sensor 9 is located at the rear focus of condenser lens 8
Near, the shoot laser 6 of optical transmitter module transmitting is after the scattering of soot gas 1 in sampling box 3, and scattering laser 7 is by poly-
Focus lens 8 converge on photoelectric sensor 9, and photoelectric sensor 9 is electrically connected with processing module.Pumping cells 12 are flabellum exhaust
Fan, is mounted on air inlet pipe 2 or escape pipe 4 close to the position of smoke discharging pipe 11.Soot gas 1 is influenced by pumping cells 12, from
Smoke discharging pipe 11 enters air inlet pipe 2, enters back into the left side hole of sampling box 3, then enter escape pipe from the right side hole of sampling box 3
4, last soot gas 1 is back to smoke discharging pipe 11 by escape pipe 4.The increases of pumping cells 12 is so that oil in sampling box 3
Soot gas 1 in flue gas body 1 and smoke discharging pipe 11 keeps component consistency, improves sampling accuracy.It is sampled by oil smoke
Module makes the process for detecting soot gas 1 be in a stable and closed dark surrounds, so that external stray light is to light
The interference of receiving module is preferably minimized, be added significantly to oil smoke detection accuracy, in addition, smoke discharging pipe 11 due to exhaust blower
Connection often generates vibration, so that detection process is affected, such as, if photoelectric sensor 9 is mounted on smoke discharging pipe
On 11, the vibration of smoke discharging pipe 11 is so that 7 signal of scattering laser that condenser lens 8 acquires deviates photoelectric sensor 9, and light is sent out
It penetrates module and optical receiver module is mounted on inside sampling box 3, so that detection process obtains a detection not affected by vibration
Environment, to improve detection accuracy.Blow off module 10 is located at the emission port of optical transmitter module and gathering for optical receiver apparatus
At 8 camera lens of focus lens, for avoiding soot gas 1 from polluting.
The windward side nozzle that air inlet pipe 2 protrudes into smoke discharging pipe 11 and is equipped with 11 air intake vent direction of smoke discharging pipe, escape pipe 4
It protrudes into smoke discharging pipe 11 and is equipped with the leeward nozzle of 11 direction of air outlet of smoke discharging pipe.When there is flue gas stream in smoke discharging pipe 11
When dynamic, windward side nozzle and leeward nozzle can generate pressure difference, and pressure difference can drive flue gas to enter air inlet pipe 2, through over-sampling
Then case 3 is back in smoke discharging pipe 11 from escape pipe 4.
Optical receiver module and optical transmitter module are staggered relatively, and scattering laser 7 of the angle of scattering less than 45 ° enters light-receiving mould
Block so that optical receiver module it is received be forward scatter laser intensity signal, the back of forward scatter signal than in the prior art
The intensity of scattered signal is strongly very much, and the signal light intensity of oil smoke detection greatly improved, and the setting of two laser emitters 5 makes
Light intensity must be detected further to improve.
Embodiment described above is a kind of preferable scheme of the utility model, is not made to the utility model any
Formal limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (9)
1. a kind of oil smoke detection device, including optical transmitter module, optical receiver module and processing module, which is characterized in that further include
Oil smoke sampling module, the oil smoke sampling module include air inlet pipe, escape pipe and sampling box,
The sampling box is located at outside smoke exhaust pipe, for storing sampling soot gas, and for installing optical transmitter module and light connects
Receive module；
One end of the air inlet pipe is connected to smoke discharging pipe, and the other end is connected to sampling box, is used for soot gas from smoke discharging pipe
It is flowed into sampling box；
One end of the escape pipe is connected to sampling box, and the other end is connected to smoke discharging pipe, is used for soot gas from sampling box stream
Smoke discharging pipe is arrived out.
2. a kind of oil smoke detection device according to claim 1, which is characterized in that the optical transmitter module includes several
Laser emitter, positioned at the downside of sampling box；The optical receiver module is located at the upside of sampling box.
3. a kind of oil smoke detection device according to claim 1, which is characterized in that the sampling box is that longitudinal section is eight sides
The box of shape, inside are coated with light absorbent, and the left side of the sampling box is connected to air inlet pipe, the right side of the sampling box with go out
Tracheae connection.
4. a kind of oil smoke detection device according to claim 2 or 3, which is characterized in that the optical transmitter module includes two
A laser emitter is located at lower-left end and the bottom righthand side of sampling box.
5. a kind of oil smoke detection device according to claim 1, which is characterized in that the sampling module further includes that pumping is single
Member, soot gas enter air inlet pipe from smoke discharging pipe, enter back into sampling box, enter back into escape pipe, are finally back to smoke discharging pipe,
The pumping cells provide power for above-mentioned soot gas flow process.
6. a kind of oil smoke detection device according to claim 5, which is characterized in that the optical receiver module includes photoelectric transfer
Sensor and condenser lens, the photoelectric sensor are located near the rear focus of condenser lens, the signal of optical transmitter module transmitting
Light is after the scattering of soot gas in sampling box, and scattering light converges on photoelectric sensor by condenser lens, the photoelectricity
Sensor is electrically connected with processing module.
7. a kind of oil smoke detection device according to claim 5, which is characterized in that the optical receiver module includes that optical fiber passes
Feel unit and condenser lens, the condenser lens is used to collected scattered light signal converging to Fibre Optical Sensor unit,
The Fibre Optical Sensor unit includes coupled waveguide and fiber coupler, and the coupled waveguide is SOI ridge waveguide, is focused saturating
The scattered light signal of mirror acquisition enters SOI ridge waveguide from the end coupling of SOI ridge waveguide；
The fiber coupler is transmission-type fibre optic grating coupler, and the scattered light signal in SOI ridge waveguide passes through optical coupling
Effect enters transmission-type fibre optic grating coupler, is then transferred to processing module by optical fiber and carries out signal processing.
8. a kind of oil smoke detection device according to claim 6 or 7, which is characterized in that it further include Blow off module, it is described to blow
Gas module is located at the emission port of optical transmitter module and the condenser lens camera lens of optical receiver apparatus, for avoiding soot gas
Pollution.
9. a kind of oil smoke detection device according to claim 1, which is characterized in that the air inlet pipe protrudes into smoke discharging pipe simultaneously
And it is equipped with the windward side nozzle in smoke discharging pipe air intake vent direction, the escape pipe protrudes into smoke discharging pipe and says equipped with smoke exhaust pipe
The leeward nozzle in air port direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820728603.7U CN208255015U (en) | 2018-05-16 | 2018-05-16 | A kind of oil smoke detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820728603.7U CN208255015U (en) | 2018-05-16 | 2018-05-16 | A kind of oil smoke detection device |
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| Publication Number | Publication Date |
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| CN208255015U true CN208255015U (en) | 2018-12-18 |
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| CN201820728603.7U Active CN208255015U (en) | 2018-05-16 | 2018-05-16 | A kind of oil smoke detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752490A (en) * | 2019-01-15 | 2019-05-14 | 深圳市诺德智联机器有限公司 | A kind of band automatically cleaning soot gas detection device |
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2018
- 2018-05-16 CN CN201820728603.7U patent/CN208255015U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752490A (en) * | 2019-01-15 | 2019-05-14 | 深圳市诺德智联机器有限公司 | A kind of band automatically cleaning soot gas detection device |
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