CN2837833Y - The oil smoke concentration measurement mechanism - Google Patents
The oil smoke concentration measurement mechanism Download PDFInfo
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- CN2837833Y CN2837833Y CN 200520132940 CN200520132940U CN2837833Y CN 2837833 Y CN2837833 Y CN 2837833Y CN 200520132940 CN200520132940 CN 200520132940 CN 200520132940 U CN200520132940 U CN 200520132940U CN 2837833 Y CN2837833 Y CN 2837833Y
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- pickup apparatus
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Abstract
The oil smoke concentration measurement mechanism, be provided with and detect light emitting devices and detect optical pickup apparatus, to the light path that detects optical pickup apparatus, be provided with detected oil smoke passage at the detection light sending device, detecting optical pickup apparatus is connected with detection light photoelectric switching circuit, light signal is converted to electric signal, detects light photoelectric switching circuit output terminal and be connected with single-chip microcomputer; The utility model also is provided with reference light source and reference light receiving trap, the reference light receiving trap is connected with the reference light photoelectric switching circuit that baseline optical signal can be converted to electric signal, reference light photoelectric switching circuit output terminal connects single-chip microcomputer, single-chip microcomputer is provided with comparing data output unit as a result, described optical devices and between the detected oil smoke passage on the light path, be provided with the air curtain that forms by the high pressure clean gas flow, the utlity model has simple in structure, life-span is long, measuring speed is fast, the advantage that accuracy of detection is high.
Description
Technical field
The utility model belongs to a kind of device that is used for measure gas concentrations, is specifically related to a kind of measurement mechanism of oil smoke discharge concentration.
Background technology
Existing measurement to catering industry smoke stack emission oil smoke, the isokinetic sampling of employing methods extract the gas in the oil smoke aiutage earlier more, oil smoke is adsorbed on the oil smoke sampling head to be gathered in the filter core, the collection filter core that to collect oil smoke again places politef sleeve with cover and sealing, bring back the laboratory and carry out ultrasonic cleaning as solvent with phenixin, move into constant volume in the color comparison tube, carry out the content analysis of oil smoke with infrared measure, and by calculating the oil smoke discharge concentration of tested unit.The content that the smoke evacuation tube is discharged oil smoke is respectively 2930cm by wave number
-1(wavelength 3.41 μ m), (stretching vibration of c h bond in the CH2 gene), 2960cm
-1(wavelength 3.38 μ m), (CH
3The stretching vibration of c h bond in the gene) and 3030cm
-1Absorbance (the A at (wavelength 3.30 μ m), (stretching vibration of aromatic rings c h bond) bands of a spectrum place
2930, A
2960And A
6060) calculate.
Required sampling time of this method and to draw the data time cycle long, one hour nearby sampling time only, and when institute's oil recovery cigarette is extracted, carbon tetrachloride solvent is poisonous volatile organic content, and the diet oil smoke to be environmental protection must survey project, need detected catering enterprise a lot of again, it is big that this just causes monitoring personnel's workload, labour intensity is big, and the meeting of prolonged application carbon tetrachloride solvent extraction simultaneously causes great harm to monitoring personnel health.
Summary of the invention
The technical problems to be solved in the utility model is to overcome above-mentioned deficiency, provides a kind of and can realize on-the-spot in good time, measurement fast, and can obtain detecting the oil smoke concentration measuring instrument of data at once.
The technical scheme that addresses the above problem is: the utility model is provided with and detects light emitting devices and detect optical pickup apparatus, to the light path that detects optical pickup apparatus, be provided with detected oil smoke passage at the detection light sending device, detecting optical pickup apparatus is connected with detection light photoelectric switching circuit, light signal is converted to electric signal, detects light photoelectric switching circuit output terminal and be connected with single-chip microcomputer; The utility model also is provided with reference light source and reference light receiving trap, the reference light receiving trap is connected with the reference light photoelectric switching circuit that baseline optical signal can be converted to electric signal, reference light photoelectric switching circuit output terminal connects single-chip microcomputer, single-chip microcomputer is provided with comparing data output unit as a result, described optical devices and be provided with the air curtain that is formed by the high pressure clean gas flow between the detected oil smoke passage on the light path.
Further scheme of the present utility model is: described detection light emitting devices is provided with infrared light generator (1a) and infrared light can be converted to the convex lens (2a) of directional light, detect optical pickup apparatus and be provided with the convex lens (2b) that detect the light optical filter, directional light can be changed into focused light, with the detection light photoelectric sensing parts (1b) that are located on detection light-receiving convex lens (2b) light path, photoelectric sensing parts (1b) connect and detect light photoelectric switching circuit input end; Described reference light receiving trap is provided with reference light optical filter and reference light convex lens, and the light path of reference light convex lens is provided with reference light photoelectric sensing parts, and reference light photoelectric sensing parts connect reference light photoelectric switching circuit input end.
Principle of work of the present utility model is: make the measured oil plume cross detection oil smoke passage, when detecting light that light emitting devices sends by detected oil smoke, partially absorbed by oil smoke, after arriving optical receiver, judge oil smoke concentration by the signal that detection light photoelectric sensor provides, because the oil smoke molecule has characteristic absorption peak, different oil smoke concentrations has different characteristic absorption peaks, so being input to the electric signal of single-chip microcomputer can change along with the difference of oil smoke concentration, single-chip microcomputer compares the reference light electric signal that itself and baseline optical signal convert to, can converse its absorbance value, and then draw the concentration value of tested oil smoke, and output result of calculation; Optical devices leave by air curtain and the detection oil smoke channel separation that is positioned on the light path, can protect optics to avoid fume pollution, can not influence detection light simultaneously and pass the oil smoke district.The main effect of described detection light and reference light optical filter is the light that filters out in certain wavelength coverage, only allows the light in the wavelength coverage undetermined to pass through.
Compared with prior art, the utility model has saved first sampling, again Cui Qu process, can directly detect the oil smoke concentration that discharges in the chimney, be convenient to environment monitoring department and obtain related data immediately, in time take corresponding measure, and alleviated labour intensity, improved work efficiency.The utlity model has simple in structurely, the life-span is long, and measuring speed is fast, the advantage that accuracy of detection is high.
Description of drawings
Fig. 1, the utility model frame structure synoptic diagram
Fig. 2, the utility model embodiment 1 detect light emitting devices and detect the optical pickup apparatus structural representation
Fig. 3, the utility model embodiment 1 surface structure synoptic diagram
Fig. 4, utility model embodiment 2 detect light emitting devices and detect the optical pickup apparatus structural representation
Fig. 5, the utility model embodiment 2 surface structure synoptic diagram
Fig. 6, the utility model embodiment 1 circuit diagram
1a-detects radiant 1b-and detects light photoelectric sensing parts 2a-convex lens 2b-convex lens 3a, the heat insulation planar lens 4-of 3b- optical filter 5a, 5b-air curtain 6-air pump 7-barrel-type casing 8-detection oil smoke inlet 9-detection oil smoke oil path 10 a-high pressure draught import 10b-high pressure draught outlet 11-mirror surface 12-high pressure draught passage
Specific embodiments
Referring to Fig. 2, Fig. 3, this routine detected oil smoke channel direction is big to vertical with light path, detect light emitting devices and detect the both lateral sides that optical pickup apparatus is separately positioned on detected oil smoke passage 9, concrete structure is: described detection light emitting devices and detection optical pickup apparatus are contained in cylindrical shell 7 two-port positions respectively, have on the cylindrical shell 7 and barrel-type casing axis detection oil smoke inlet 8 in vertical direction, be respectively equipped with and barrel-type casing axis high pressure draught import 10a in vertical direction and corresponding high pressure draught outlet 10b at the barrel-type casing two ends, high pressure gas flows to, the air curtain 5a that forms between the outlet, the 5b gas channel lays respectively at and detects between light emitting devices and the detection oil smoke passage 9, and detect between optical pickup apparatus and the detection oil smoke passage 9, detecting between light emitting devices and the corresponding air curtain 5a, and detect between optical pickup apparatus and the corresponding air curtain 5b, be arranged with heat insulation planar lens 3a, 3b.
Be provided with the gas channel 12 that is communicated with high-pressure pump 6, two high pressure draught import 10a of barrel-type casing 7 are communicated with high pressure draught passage 12.；
Above-mentioned cylindrical shell 13 long 0.6m, diameter 60mm detects the about 30mm of width of oil smoke passage 9 between two air curtain 5a, the 5b, (described circular cylindrical shell body length can in the 0.01-2m scope value).
Referring to Fig. 1, Fig. 2, described detection light emitting devices is provided with infrared light generator 1a and infrared light can be converted to the convex lens 2a of directional light, detect optical pickup apparatus and be provided with the convex lens 2b that detects light optical filter 4, directional light can be changed into focused light, with the detection light photoelectric sensing parts 1b that is located on the detection light-receiving convex lens 2b light path, photoelectric sensing parts 1b connects and detects the light photoelectric switching circuit; Also be provided with reference light light source and reference light receiving trap, the reference light receiving trap is provided with reference light optical filter and reference light convex lens (not shown), the light path of reference light convex lens is provided with the reference light photoelectric sensor, the reference light photoelectric sensor with baseline optical signal can be converted to electric signal the reference light photoelectric switching circuit be connected, detect light photoelectric switching circuit output terminal and reference light photoelectric switching circuit output terminal and connect single-chip microcomputer, carry out data relatively, the single-chip microcomputer output terminal is connected to display and printer.
The focal length of above-mentioned convex lens 2a, 2b is 79mm, radius-of-curvature is 40mm, center thickness 7.9mm, plano-convex lens and planar lens optical glass, described optical glass can be quartz glass or optical quartz glass, also can adopt the high lens plating anti-reflection film of transmissivity.
The basic filter wavelength of reference light receiving trap is 3.90 μ m, bandwidth 0.2 μ m, and the detection light optical filter wavelength that detects optical receiver is 3.41 μ m, bandwidth 0.2 μ m.
During actual detected, allow soot gas from the oil smoke passages 9 that the detection oil smoke inlet 8 of cylindrical shell 7 flows in the housings, flow out from both sides high pressure draught outlet 10b again, by detecting the light path between light emitting devices and the detection optical pickup apparatus by country sampling standard; The infrared light that infrared light generator sends forms directional light by convex lens 2a, arrive the detection optical pickup apparatus through the oil smoke district, be pooled to detection light photoelectric sensor 1b through optical filter and convex lens 2b again, when infrared light passes through tested oil smoke, because the methyl of oil smoke molecule (CH3) and methylene (CH2) absorption peak that has feature in the near-infrared region, when oil smoke concentration changes, the absorbed degree of infrared light also changes, arrive and detect the i.e. variation thereupon of electric signal that is converted to behind the light optical receiver, this is detected electric signal with single-chip microcomputer and reference electrical signal compares, and promptly converses oil smoke concentration.
Because oil smoke has very strong adhesion, so with the air curtain of high pressure draught formation optics is protected, heat insulation plano lens 3a, 3b between air curtain and the optics then play the thermal insulation protection effect.
Fig. 6 is the circuit diagram of present embodiment: be provided with respectively by TIP122, TPL521-1,8,050 two amplifying circuits that structure is identical forming, be respectively applied for the electric signal that electric signal that amplification detection light photoelectric sensing parts 1b converts to and reference light photoelectric sensing parts convert to, two amplification circuit output ends are input in the single-chip microcomputer after the AD conversion respectively again, I/O controller and the peripheral circuit be made up of 8255 (U09) also are connected with single-chip microcomputer 80C32 (U05) input end, single-chip microcomputer is connected and communication with print out equipment by the output circuit of being made up of MAX485 and MAX233 again, and is connected to display lcd.
Its signal flow is: filter through optical filter after detecting the light transmission air chamber again, convex lens 2b focuses on back detected light photoelectric sensor 1b and receives, convert light signal to electric signal, again through NO7, GIO03, the power amplification circuit that NO5 forms amplifies, after analog to digital conversion, be input to single-chip microcomputer 80C32 again, reference light source filters through the reference light optical filter, planoconvex lens is received by the reference light photoelectric sensor after focusing on again, convert light signal to electric signal, again through NO8, GIO04, the power amplification circuit that NO6 forms amplifies, after analog to digital conversion, be input to single-chip microcomputer 80C32 again, single-chip microcomputer will detect the electric signal that electric signal that light converts to and reference light convert to and compare, converse oil smoke concentration, detect data by display or printer output.
This routine difference from Example 1 is: described detection light emitting devices detects optical pickup apparatus and is arranged on the horizontal the same side of detected oil smoke passage 9, detects between light emitting devices and the receiving trap and forms the light path of detection light emitting devices to receiving trap by the reflecting surface 11 that is arranged on detected oil smoke passage 9 horizontal opposite sides.
Concrete structure such as Fig. 4, shown in Figure 5, be provided with detection radiant 1a in detected oil smoke passage 9 horizontal sides, its transmission path is: successively through the band optical filter convex lens 2a, heat insulation planar lens 3a, air curtain 5a, be horizontally through detected oil smoke passage 9, arrive the horizontal opposite side of measured oil cigarette channel, continue to pass through successively air curtain 5b, heat insulation planar lens 3b, turn back through reflecting surface 11 reflections, the path when suitable successively again turns back to and the detection light photoelectric sensing parts 1b of transmitting illuminant in the same side.
Claims (6)
1, oil smoke concentration measurement mechanism, it is characterized in that: be provided with and detect light emitting devices and detect optical pickup apparatus, to the light path that detects optical pickup apparatus, be provided with detected oil smoke passage at the detection light sending device, detecting optical pickup apparatus is connected with detection light photoelectric switching circuit, light signal is converted to electric signal, detects light photoelectric switching circuit output terminal and be connected with single-chip microcomputer; The utility model also is provided with reference light source and reference light receiving trap, the reference light receiving trap is connected with the reference light photoelectric switching circuit that baseline optical signal can be converted to electric signal, reference light photoelectric switching circuit output terminal connects single-chip microcomputer, single-chip microcomputer is provided with comparing data output unit as a result, described optical devices and be provided with the air curtain that is formed by the high pressure clean gas flow between the detected oil smoke passage on the light path.
2, oil smoke concentration measurement mechanism according to claim 1, it is characterized in that: described detection light emitting devices is provided with infrared light generator (1a) and infrared light can be converted to the convex lens (2a) of directional light, detect optical pickup apparatus and be provided with the convex lens (2b) that detect the light optical filter, directional light can be changed into focused light, with the detection light photoelectric sensing parts (1b) that are located on detection light-receiving convex lens (2b) light path, photoelectric sensing parts (1b) connect and detect light photoelectric switching circuit input end; Described reference light receiving trap is provided with reference light optical filter and reference light convex lens, and the light path of reference light convex lens is provided with reference light photoelectric sensing parts, and reference light photoelectric sensing parts connect reference light photoelectric switching circuit input end.
3, oil smoke concentration measurement mechanism according to claim 2 is characterized in that: the basic filter wavelength of described reference light receiver is 3.90 μ m, bandwidth 0.2 μ m, and the detection light optical filter wavelength that detects optical receiver is 3.41 μ m, bandwidth 0.2 μ m.
4, according to claim 1,2 or 3 described oil smoke concentration measurement mechanisms, it is characterized in that: described detection light emitting devices and detection optical pickup apparatus are separately positioned on the both lateral sides of detected oil smoke passage (9).
5, oil smoke concentration measurement mechanism according to claim 4, it is characterized in that: described detection light emitting devices and detection optical pickup apparatus are contained in cylindrical shell (7) two-port position respectively, have on the cylindrical shell (7) and barrel-type casing axis detection oil smoke inlet (8) in vertical direction, be respectively equipped with and high pressure draught import (10a) in vertical direction of barrel-type casing axis and corresponding high pressure draught outlet (10b) at the barrel-type casing two ends, high pressure gas flows to, air curtain (the 5a that forms between the outlet, 5b) gas channel lays respectively at and detects between light emitting devices and the detection oil smoke passage (9), and detect between optical pickup apparatus and the detection oil smoke passage (9), detecting between light emitting devices and the corresponding air curtain (5a), and detect between optical pickup apparatus and the corresponding air curtain (5b), be arranged with heat insulation planar lens (3a, 3b).
6, according to claim 1,2 or 3 described oil smoke concentration measurement mechanisms, it is characterized in that: described detection light emitting devices and detection optical pickup apparatus are arranged on the horizontal the same side of detected oil smoke passage (9), detect between light emitting devices and the receiving trap and detect the light path of light emitting devices to receiving trap by reflecting surface (11) formation that is arranged on the horizontal opposite side of detected oil smoke passage (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520132940 CN2837833Y (en) | 2005-11-15 | 2005-11-15 | The oil smoke concentration measurement mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520132940 CN2837833Y (en) | 2005-11-15 | 2005-11-15 | The oil smoke concentration measurement mechanism |
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|---|---|
| CN2837833Y true CN2837833Y (en) | 2006-11-15 |
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| CN 200520132940 Expired - Lifetime CN2837833Y (en) | 2005-11-15 | 2005-11-15 | The oil smoke concentration measurement mechanism |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226753A (en) * | 2011-01-25 | 2011-10-26 | 广州正虹科技发展有限公司 | Lampblack concentration detection device and detection method |
| CN102435576A (en) * | 2011-09-14 | 2012-05-02 | 武汉市天虹仪表有限责任公司 | Oil smoke on-line monitor used in catering industry |
| CN102435577A (en) * | 2011-09-14 | 2012-05-02 | 武汉市天虹仪表有限责任公司 | Direct-injection type fume online monitor for catering industry |
| CN103983602A (en) * | 2014-06-04 | 2014-08-13 | 江南大学 | Infrared oil fume concentration sensor |
| CN106124406A (en) * | 2016-08-23 | 2016-11-16 | 合肥金星机电科技发展有限公司 | The in situ detection device of flue gas |
| CN106153540A (en) * | 2016-08-23 | 2016-11-23 | 合肥金星机电科技发展有限公司 | The detection probe of flue gas |
| CN107478610A (en) * | 2016-06-07 | 2017-12-15 | 宁波方太厨具有限公司 | A kind of photo-electric oil smoke sensor |
| CN107505242A (en) * | 2017-09-22 | 2017-12-22 | 温州益禾电子科技有限公司 | A kind of oil smoke concentration sensor |
| CN109099486A (en) * | 2018-09-26 | 2018-12-28 | 华帝股份有限公司 | Fume exhaust fan |
| CN109856022A (en) * | 2018-05-16 | 2019-06-07 | 杭州明瑞智能检测科技有限公司 | A kind of high-efficient oil smoke detection device |
| CN110242991A (en) * | 2019-06-12 | 2019-09-17 | 深圳市和遂科技有限公司 | A kind of kitchen ventilator automatically adjusting gear |
| 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 |
-
2005
- 2005-11-15 CN CN 200520132940 patent/CN2837833Y/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226753A (en) * | 2011-01-25 | 2011-10-26 | 广州正虹科技发展有限公司 | Lampblack concentration detection device and detection method |
| CN102435576A (en) * | 2011-09-14 | 2012-05-02 | 武汉市天虹仪表有限责任公司 | Oil smoke on-line monitor used in catering industry |
| CN102435577A (en) * | 2011-09-14 | 2012-05-02 | 武汉市天虹仪表有限责任公司 | Direct-injection type fume online monitor for catering industry |
| CN103983602A (en) * | 2014-06-04 | 2014-08-13 | 江南大学 | Infrared oil fume concentration sensor |
| CN107478610A (en) * | 2016-06-07 | 2017-12-15 | 宁波方太厨具有限公司 | A kind of photo-electric oil smoke sensor |
| CN107478610B (en) * | 2016-06-07 | 2023-09-15 | 宁波方太厨具有限公司 | Photoelectric type oil smoke sensor |
| CN106153540A (en) * | 2016-08-23 | 2016-11-23 | 合肥金星机电科技发展有限公司 | The detection probe of flue gas |
| CN106153540B (en) * | 2016-08-23 | 2020-01-03 | 合肥金星机电科技发展有限公司 | Detection probe of flue gas |
| CN106124406A (en) * | 2016-08-23 | 2016-11-16 | 合肥金星机电科技发展有限公司 | The in situ detection device of flue gas |
| CN107505242A (en) * | 2017-09-22 | 2017-12-22 | 温州益禾电子科技有限公司 | A kind of oil smoke concentration sensor |
| CN109856022A (en) * | 2018-05-16 | 2019-06-07 | 杭州明瑞智能检测科技有限公司 | A kind of high-efficient oil smoke detection device |
| CN109856024A (en) * | 2018-05-16 | 2019-06-07 | 杭州明瑞智能检测科技有限公司 | A kind of oil smoke sampling detector for multifunctional and its method of sampling |
| CN109856023A (en) * | 2018-05-16 | 2019-06-07 | 杭州明瑞智能检测科技有限公司 | A kind of oil smoke detection device |
| CN109099486A (en) * | 2018-09-26 | 2018-12-28 | 华帝股份有限公司 | Fume exhaust fan |
| CN110242991A (en) * | 2019-06-12 | 2019-09-17 | 深圳市和遂科技有限公司 | A kind of kitchen ventilator automatically adjusting gear |
| 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
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| EXPY | Termination of patent right or utility model |