CN109001086A - A kind of oil smoke detection device and its detection method - Google Patents

A kind of oil smoke detection device and its detection method Download PDF

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Publication number
CN109001086A
CN109001086A CN201810467877.XA CN201810467877A CN109001086A CN 109001086 A CN109001086 A CN 109001086A CN 201810467877 A CN201810467877 A CN 201810467877A CN 109001086 A CN109001086 A CN 109001086A
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China
Prior art keywords
oil smoke
module
sampling box
sampling
pipe
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CN201810467877.XA
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Chinese (zh)
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马颖杰
牛军丽
陈吕军
陆志强
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Hangzhou Mingrui Intelligent Detection Technology Co Ltd
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Hangzhou Mingrui Intelligent Detection Technology Co Ltd
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Priority to CN201810467877.XA priority Critical patent/CN109001086A/en
Publication of CN109001086A publication Critical patent/CN109001086A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/06Investigating concentration of particle suspensions
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/06Investigating concentration of particle suspensions
    • G01N2015/0693Investigating concentration of particle suspensions by optical means, e.g. by integrated nephelometry

Abstract

The invention discloses a kind of oil smoke detection device and its detection methods, 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.Substantial effect of the invention is: make the process for detecting soot gas be in stable and closed dark surrounds by oil smoke sampling module, reduces the interference of stray light, increase 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;Oil smoke detection method can obtain the content data of each granularity in precise measurement soot gas molecule.

Description

A kind of oil smoke detection device and its detection method
Technical field
The present invention relates to the detection field of smoke more particularly to a kind of oil smoke detection devices and its detection method.
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.
Summary of the invention
The technical problem to be solved by the present invention is to how to design it is a kind of reduction smoke discharging pipe in light disturbance and raising The oil smoke detection device of signal light intensity.
Used technical solution is the present invention in order to solve the above problem: a kind of oil smoke detection device, including light emitting mould Block, optical receiver module and processing module further include oil smoke sampling module, and the oil smoke sampling module includes air inlet pipe, escape pipe And sampling box, the sampling box are located at outside smoke exhaust pipe, for store sampling soot gas, and for install optical transmitter module 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 from row Smoke pipeline 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 oil smoke Gas flows out to smoke discharging pipe from sampling box.The process for detecting soot gas is made to be in a stabilization by oil smoke sampling module And closed dark surrounds is added significantly to oil smoke inspection so that external stray light is preferably minimized the interference of optical receiver module The accuracy of survey.Oil smoke detection device in the prior art is located inside smoke discharging pipe, since sampling box is located at row in this patent Outside smoke 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 Complete installation.
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;The air inlet pipe protrudes into smoke discharging pipe and is equipped with smoke discharging pipe air intake vent direction windward Facial canal mouth;The escape pipe protrudes into smoke discharging pipe and is equipped with the leeward nozzle of smoke discharging pipe direction of air outlet.Light-receiving mould Block and optical transmitter module are staggered relatively, and scattering light of the angle of scattering less than 45 ° enters optical receiver module, so that optical receiver module receives Be forward scatter laser intensity signal, the intensity of the backscatter signal of forward scatter signal than in the prior art is strongly very It is more, the signal light intensity of oil smoke detection greatly improved, the setting of multiple laser emitters is so that detection light intensity further mentions It is high.When there is flow of flue gas in smoke discharging pipe, windward side nozzle and leeward nozzle can generate pressure difference, and pressure difference can drive cigarette Gas enters air inlet pipe, by sampling box, is then back in smoke discharging pipe from escape pipe.
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 pumping cells are located at the air inlet pipe side of the connector of air inlet pipe and smoke discharging pipe, including fan Leaf exhaust fan and filter screen unit, are controlled by processing module, and the filter screen unit is the adjustable filter covered on air inlet pipe nozzle The strainer of net mesh size.The mesh aperture of strainer is set in 2 μm ~ 45 μm, which includes two panels identical 270 mesh hole ruler Very little sieve and rotary unit, the rotor of rotary unit are fixed therein on a sieve, when two panels sieve hole is overlapped, net Hole aperture is 45 μm, and when the mesh of two panels sieve is staggered, aperture of filter screen becomes smaller, and controls mesh aperture by rotation amount.
A kind of detection method of oil smoke detection device is suitable for a kind of oil smoke detection device as claimed in claim 9, including Following steps:
S1: the preparation stage opens Blow off module and reaches maximum power, and the mesh aperture for adjusting filter screen unit reaches 2 μm, opening door-leaf Leaf exhaust fan empties the bulky grain soot gas of sampling box internal residual, while opening optical transmitter module and optical receiver module, when Oil smoke content closes flabellum exhaust fan when being less than setting value, and turns down the operating power of Blow off module;
S2: sample phase, the mesh aperture for adjusting filter screen unit reach setting value X, flabellum exhaust fan are opened, so that granularity is less than The soot gas molecule of X enters sampling box by air inlet pipe, is then back to smoke discharging pipe from escape pipe, while opening lower-left end Laser emitter and optical receiver module, when oil smoke content increase to fluctuated in ± 5% range in maximum value measured value it is steady When curve, terminate sample phase;
S3: detection-phase, while the laser emitter of lower-left end and bottom righthand side is opened, so that the sampled signal of optical receiver module reaches To maximum, and draw sampling curve;
S4: tail is blown the stage, is opened Blow off module and is reached maximum power and adjust the mesh aperture arrival minimum-value aperture of filter screen unit. This oil smoke detection method can obtain the content data of each granularity in precise measurement soot gas molecule, for example, set X as At 2.5 μm, the content of PM2.5 in oil smoke can be measured.
Substantial effect of the invention is: 1, by oil smoke sampling module make the process that detects soot gas be in one 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;2, the intensity of the backscatter signal of forward scatter signal than in the prior art is strongly very much, greatly improves The 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 essence Degree;4, the installation difficulty of oil smoke detection device is reduced;5, oil smoke detection method can obtain in precise measurement soot gas molecule The content data of each granularity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of oil smoke detection device of the invention.
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, a specific embodiment of the invention is further described in detail.
Used technical solution is the present invention in order to solve the above problem: Fig. 1 is the knot of oil smoke detection device of the invention Structure schematic diagram, the oil smoke detection device include optical transmitter module, optical receiver module, processing module, oil smoke sampling module and air blowing Module 10, oil smoke sampling module include air inlet pipe 2, escape pipe 4, sampling box 3 and pumping cells 12.Sampling box 3 is located at smoke exhaust pipe Outside, be 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 are that longitudinal section is octagonal box, and inside is coated with light absorbent, sampling The left side of case 3 is connected to air inlet pipe 2, and the right side of sampling box 3 is connected to escape pipe 4, inside be coated with the sampling box 3 of light absorbent into One step has ensured the dark surrounds in detection process, reduces the influence of external stray light.Optical transmitter module includes two laser Transmitter 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 condenser lens 8, The lens barrel of condenser lens 8 is opened on the surface of sampling box 3, and photoelectric sensor 9 is located near the rear focus of condenser lens 8, For the shoot laser 6 of optical transmitter module transmitting after the scattering of soot gas 1 in sampling box 3, scattering laser 7 passes through condenser lens 8 converge on photoelectric sensor 9, and photoelectric sensor 9 is electrically connected with processing module.Pumping cells 12 are flabellum exhaust fan, installation In 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 enter air inlet pipe 2, enter back into the left side hole of sampling box 3, then enter escape pipe 4 from the right side hole of sampling box 3, last oil Flue gas body 1 is back to smoke discharging pipe 11 by escape pipe 4.The increases of pumping cells 12 so that soot gas 1 in sampling box 3 with Soot gas 1 in smoke discharging pipe 11 keeps component consistency, improves sampling accuracy.To examine by oil smoke sampling module The process for surveying soot gas 1 is in a stable and closed dark surrounds, so that external stray light is to optical receiver module Interference is preferably minimized, and is added significantly to the accuracy of oil smoke detection, in addition, smoke discharging pipe 11 is with exhaust blower due to connecting, often Vibration can be generated, so that detection process is affected, such as, if photoelectric sensor 9 is mounted on smoke discharging pipe 11, smoke evacuation The vibration of pipeline 11 so that 7 signal of scattering laser that condenser lens 8 acquires deviates photoelectric sensor 9, and by optical transmitter module and Optical receiver module is mounted on inside sampling box 3, so that detection process obtains a detection environment not affected by vibration, thus Improve detection accuracy.Blow off module 10 is located at the emission port of optical transmitter module and 8 mirror of condenser lens of optical receiver apparatus At head, for avoiding soot gas 1 from polluting.Air inlet pipe 2 protrudes into smoke discharging pipe 11 and is equipped with 11 air intake vent direction of smoke discharging pipe Windward side nozzle, escape pipe 4 protrude into smoke discharging pipe 11 and be equipped with 11 direction of air outlet of smoke discharging pipe leeward nozzle.When When having flow of flue gas in smoke discharging pipe 11, windward side nozzle and leeward nozzle can generate pressure difference, and pressure difference can drive flue gas Into air inlet pipe 2, by sampling box 3, then it 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.
Pumping cells are located at the air inlet pipe side of the connector of air inlet pipe and smoke discharging pipe, including flabellum exhaust fan and strainer Unit, is controlled by processing module, and filter screen unit is the strainer of the adjustable filtering screen mesh size covered on air inlet pipe nozzle.Filter The mesh aperture of net is set in 2 μm ~ 45 μm, which includes the sieve and rotary unit of the identical 270 mesh pore size of two panels, The rotor of rotary unit is fixed therein on a sieve, and rotary unit is controlled by processing module, when two panels sieve hole is overlapped When, mesh aperture is 45 μm, and when the mesh of two panels sieve is staggered, aperture of filter screen becomes smaller, and controls mesh aperture by rotation amount.
A kind of detection method of oil smoke detection device is suitable for aforementioned oil smoke detection device, comprising the following steps:
S1: the preparation stage opens Blow off module and reaches maximum power, and the mesh aperture for adjusting filter screen unit reaches 2 μm, opening door-leaf Leaf exhaust fan empties the bulky grain soot gas of sampling box internal residual, while opening optical transmitter module and optical receiver module, when Oil smoke content closes flabellum exhaust fan when being less than setting value, and turns down the operating power of Blow off module;
S2: sample phase, the mesh aperture for adjusting filter screen unit reach setting value X, flabellum exhaust fan are opened, so that granularity is less than The soot gas molecule of X enters sampling box by air inlet pipe, is then back to smoke discharging pipe from escape pipe, while opening lower-left end Laser emitter and optical receiver module, when oil smoke content increase to fluctuated in ± 5% range in maximum value measured value it is steady When curve, terminate sample phase;
S3: detection-phase, while the laser emitter of lower-left end and bottom righthand side is opened, so that the sampled signal of optical receiver module reaches To maximum, and draw sampling curve;
S4: tail is blown the stage, is opened Blow off module and is reached maximum power and adjust the mesh aperture arrival minimum-value aperture of filter screen unit. This oil smoke detection method can obtain the content data of each granularity in precise measurement soot gas molecule, for example, set X as At 2.5 μm, the content of PM2.5 in oil smoke can be measured.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.

Claims (10)

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;The air inlet pipe protrudes into smoke evacuation Pipeline and the windward side nozzle for being equipped with smoke discharging pipe air intake vent direction;The escape pipe protrudes into smoke discharging pipe and is equipped with smoke evacuation The leeward nozzle of pipeline direction of air outlet.
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 8, which is characterized in that the pumping cells be located at air inlet pipe with The air inlet pipe side of the connector of smoke discharging pipe, including flabellum exhaust fan and filter screen unit are controlled by processing module, the filter Net unit is the strainer of the adjustable filtering screen mesh size covered on air inlet pipe nozzle.
10. a kind of detection method of oil smoke detection device is suitable for a kind of oil smoke detection device as claimed in claim 9, special Sign is, comprising the following steps:
S1: the preparation stage opens Blow off module and reaches maximum power, and the mesh aperture for adjusting filter screen unit reaches 2 μm, opening door-leaf Leaf exhaust fan empties the bulky grain soot gas of sampling box internal residual, while opening optical transmitter module and optical receiver module, when Oil smoke content closes flabellum exhaust fan when being less than setting value, and turns down the operating power of Blow off module;
S2: sample phase, the mesh aperture for adjusting filter screen unit reach setting value X, flabellum exhaust fan are opened, so that granularity is less than The soot gas molecule of X enters sampling box by air inlet pipe, is then back to smoke discharging pipe from escape pipe, while opening lower-left end Laser emitter and optical receiver module, when oil smoke content increase to fluctuated in ± 5% range in maximum value measured value it is steady When curve, terminate sample phase;
S3: detection-phase, while the laser emitter of lower-left end and bottom righthand side is opened, so that the sampled signal of optical receiver module reaches To maximum, and draw sampling curve;
S4: tail is blown the stage, is opened Blow off module and is reached maximum power and adjust the mesh aperture arrival minimum-value aperture of filter screen unit.
CN201810467877.XA 2018-05-16 2018-05-16 A kind of oil smoke detection device and its detection method Pending CN109001086A (en)

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CN201810467877.XA CN109001086A (en) 2018-05-16 2018-05-16 A kind of oil smoke detection device and its detection method
CN201910164026.2A CN109856023A (en) 2018-05-16 2019-03-05 A kind of oil smoke detection device
CN201910163998.XA CN109856022A (en) 2018-05-16 2019-03-05 A kind of high-efficient oil smoke detection device
CN201910164402.8A CN109856024A (en) 2018-05-16 2019-03-05 A kind of oil smoke sampling detector for multifunctional and its method of sampling

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CN201810467877.XA Pending CN109001086A (en) 2018-05-16 2018-05-16 A kind of oil smoke detection device and its detection method
CN201910164026.2A Withdrawn CN109856023A (en) 2018-05-16 2019-03-05 A kind of oil smoke detection device
CN201910164402.8A Pending CN109856024A (en) 2018-05-16 2019-03-05 A kind of oil smoke sampling detector for multifunctional and its method of sampling
CN201910163998.XA Withdrawn CN109856022A (en) 2018-05-16 2019-03-05 A kind of high-efficient oil smoke detection device

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CN201910164402.8A Pending CN109856024A (en) 2018-05-16 2019-03-05 A kind of oil smoke sampling detector for multifunctional and its method of sampling
CN201910163998.XA Withdrawn CN109856022A (en) 2018-05-16 2019-03-05 A kind of high-efficient oil smoke detection device

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CN110361311A (en) * 2019-07-30 2019-10-22 蓝天白云清洁服务有限公司 A kind of oil smoke concentration detection sensor and detection method
CN110487688A (en) * 2019-09-06 2019-11-22 宁波方太厨具有限公司 The particulate matter detection means and detection method of kitchen ventilator
CN110608984A (en) * 2019-09-25 2019-12-24 佛山市顺德区美的洗涤电器制造有限公司 Oil smoke detection component and kitchen appliance
CN111307682A (en) * 2020-03-16 2020-06-19 陕西环研环保产品检验有限公司 Catering industry oil smoke detection equipment and detection method
CN111735746A (en) * 2020-06-10 2020-10-02 杭州明瑞智能检测科技有限公司 Handheld oil smoke detector
WO2021238569A1 (en) * 2020-05-26 2021-12-02 江苏友穗传感科技股份有限公司 Oil smoke sensor having air curtain structure

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CN110361311A (en) * 2019-07-30 2019-10-22 蓝天白云清洁服务有限公司 A kind of oil smoke concentration detection sensor and detection method
CN110487688A (en) * 2019-09-06 2019-11-22 宁波方太厨具有限公司 The particulate matter detection means and detection method of kitchen ventilator
CN110608984A (en) * 2019-09-25 2019-12-24 佛山市顺德区美的洗涤电器制造有限公司 Oil smoke detection component and kitchen appliance
CN111307682A (en) * 2020-03-16 2020-06-19 陕西环研环保产品检验有限公司 Catering industry oil smoke detection equipment and detection method
CN111307682B (en) * 2020-03-16 2022-06-14 陕西环研环保产品检验有限公司 Catering industry oil smoke detection equipment and detection method
WO2021238569A1 (en) * 2020-05-26 2021-12-02 江苏友穗传感科技股份有限公司 Oil smoke sensor having air curtain structure
CN111735746A (en) * 2020-06-10 2020-10-02 杭州明瑞智能检测科技有限公司 Handheld oil smoke detector

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Application publication date: 20181214