CN109406352A - Light correlation oil smoke detection device with sheath gas shielded - Google Patents
Light correlation oil smoke detection device with sheath gas shielded Download PDFInfo
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- CN109406352A CN109406352A CN201811436956.0A CN201811436956A CN109406352A CN 109406352 A CN109406352 A CN 109406352A CN 201811436956 A CN201811436956 A CN 201811436956A CN 109406352 A CN109406352 A CN 109406352A
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- 238000001514 detection method Methods 0.000 title claims abstract description 74
- 239000000779 smoke Substances 0.000 title claims abstract description 38
- 230000003287 optical effect Effects 0.000 claims description 30
- 238000009423 ventilation Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000740 bleeding effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 11
- 239000003517 fume Substances 0.000 description 8
- 238000010411 cooking Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003189 isokinetic effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N2015/0238—Single particle scatter
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The light correlation oil smoke detection device with sheath gas shielded that the present invention provides a kind of; it is made of fixed flange, light source generation cavity, light signal chamber and connecting cross beam; the fixed flange, light signal chamber and light source generation cavity are hollow cylinder; successively center of circle arranged in co-axial alignment from left to right; the fixed flange and light signal chamber link together; it is equipped with gap between the light signal chamber and light source generation cavity, connecting cross beam is equipped between the light source generation cavity and light signal chamber.The present invention avoids oil smoke and is attached to detection eyeglass, cause the inaccuracy of data, while substantially increasing the service life of equipment, decrease operation maintenance personnel to the maintenance frequency of equipment by increasing sheath gas air compensating system in whole device.
Description
Technical field
It the present invention relates to the use of the device that light source is measured in real time oil smoke, more particularly to the light pair that installation is simple and convenient
Penetrate formula oil smoke detection device.
Background technique
Oil smoke, grease, organic matter and its heat resolve or pyrolysis product for referring to food cooking, volatilizing in process.It crosses
Amount discharge can be to the pollution of atmospheric environment and living environment.
Cooking fume includes the oil smoke discharge of catering trade unit, newly set up the design of catering trade unit, environmental impact assessment,
The food processing unit of oil smoke discharge, discharge oil smoke during environmental protection installation final acceptance of construction and its operation and non-profit-making list
Position interior employee dining room etc..
Country has also put into effect GB 18483-2001 " cooking fume discharge standard " thus, and this product is directed to these places
The demand for carrying out real-time monitoring designs according to the relevant laws and regulations of country and standard, using light to the mode of penetrating, ensure that data
Stability and accuracy, realize to discharge beyond standards monitor, for environmental protection develop technical support is provided, provide a health for resident
Comfortable environment.
At present both at home and abroad there are mainly two types of the technical solutions of existing technology:
1. extracting the gas in oil smoke exhaust tube with isokinetic sampling's method, oil smoke is adsorbed in collection head.Again with four chlorinations
Carbon solution carries out ultrasonic cleaning finally for solution infrared spectrophotometric determination extracted to sample, obtains oil smoke
Content.
2. the oil smoke that will be collected in detector tube is fixed on filtering level, then is occurred by catalyst action and the concentrated sulfuric acid
Decomposition reaction, the concentration of oil smoke can be obtained by generating dark reactant by estimating the depth of reactant color.
In actual use, poor in timeliness is unable to real-time detector data and obtains result said two products；Data are not
Accurately；Test mode is cumbersome.
This disadvantage there are the reason of essentially consist in:
1. the unstability of oil smoke concentration: oil smoke during actual discharge, when concentration detection mode low, traditional when high
It needs to sample, then is reacted or chemically examined, the deviation of data but will be caused in collection and detection process；
2. the inaccuracy of detection method: using reagents such as chemicals, being carried out to collected oil smoke secondary or more
Secondary detection has had resulted in the deviation of data, and with greater need for multiple multi-point sampler.
Summary of the invention
The purpose of the present invention is to provide a kind of correlation cooking fume device with sheath gas shielded, due to cooking fume
The particularity of device, it is necessary to be mounted in fume pipeline, Long Term Contact oil smoke.A large amount of oil smoke hold very much when passing through detection zone
It is easily adhered to the surface of optical lens, causes data accuracy to give a discount, so how to improve the service efficiency of product, only to the greatest extent may be used
The few pollution eyeglass of energy, is to solve the problems, such as the more reliable solution at present.
Technical program of the present invention lies in:
Light correlation oil smoke detection device with sheath gas shielded, by fixed flange, light source generation cavity, light signal chamber
With connecting cross beam form, the fixed flange, light signal chamber and light source generation cavity are hollow cylinder, successively from a left side to
Right center of circle arranged in co-axial alignment, the fixed flange and light signal chamber link together, and the light signal chamber and light source occur
It is equipped with gap between chamber, connecting cross beam is equipped between the light source generation cavity and light signal chamber, it is characterised in that:
Fixed flange: being equipped with micro air pump inside the fixed flange, the micro air pump include inflatable mouth and
Bleeding point；
Light signal chamber: the intracavitary portion of light signal be successively provided with from left to right photelectric receiver, optical lens and
Detection mouth；
Light source generation cavity: be successively provided with from right to left inside the light source generation cavity light source generator, optical lens and
Detection mouth；
Connecting cross beam: the connecting cross beam both ends are separately connected the inside of light source generation cavity and light signal chamber, with light source
The connected one end in signal chamber side also extends the inside for being connected to the fixed flange, offers and passes through inside the connecting cross beam
The channel at both ends is worn, is the road Qiao Qifu；
Wherein, in the photelectric receiver, optical lens in the intracavitary portion of the light signal, detection mouth and the light source generation cavity
Light source generation cavity, optical lens and the detection mouth center of circle coaxial-symmetrical in portion are arranged, and the detection mouth is hollow cylinder, are perforated through
The side of light signal chamber and light source emission cavity；
The fixed bracket of concave is additionally provided between the detection mouth and optical lens, bottom and the concave of the detection mouth are fixed
Bracket is connected, and the fixed bracket of the concave offers sheath stomata, and the sheath stomata is through-hole, and one end of the sheath stomata is connected to inspection
Mouth is surveyed, the inflatable mouth of the other end and micro air pump in the fixed flange is respectively connected together by tracheae, the concave
Fixed bracket is equipped with through-hole, and the through-hole and optical lens and detection mouth are coaxial.
Further, between the fixed bracket of the concave and the detection mouth, it is additionally provided with fixing lug boss, the concave is fixed
Bracket and detection mouth are linked together by fixing lug boss, and also are provided in fixing lug boss corresponding with the fixed bracket of concave logical
Hole；
The top of fixing lug boss is hollow ring, and internal diameter is slightly larger than the outer diameter of detection mouth bottom, is covered with detection mouth bottom
After being fitted together, sealing is formed；
The lower part of fixing lug boss, to be rectangular, the support bracket fastened upper surface of concave offers corresponding concave notch, and two
When person is bolted together, sealing can be also formed.
Further, the support bracket fastened upper surface of the concave, be equipped with a concave annular air channel, the annular air channel with
Sheath stomata is connected；
At the bottom opening of the fixing lug boss, along its circumference, the ventilation block of several perforations is uniformly offered, it is described
Ventilation block is located at the surface of annular air channel.
It further, further include lens protection device, the lens protection device includes lens fender bracket peace optical lens,
The lower part of the lens fender bracket is inlaid with zero diopter lens, the zero diopter lens setting optical lens and the fixed bracket of concave it
Between, coaxial with the optical lens, the surface of the light source generation cavity and light signal chamber is equipped with aperture, the lens protection dress
It sets and inlays wherein.
Further, the detection mouth inside is in horn-like, and top internal diameter is greater than bottom inner diameter, wide at the top and narrow at the bottom.
Further, it is divided into excessive air drain and oil scupper at the top of the detection mouth, excessive air drain and oil scupper are all from detection mouth
Inner bottom opening extends to detection mouth inner tip, and the inclination angle of the oil scupper is greater than the inclination angle for the air drain that overflows.
The utility model has the advantages that
1) present invention avoids oil smoke and is attached to optical lens, cause by increasing sheath gas air compensating system in whole device
The inaccuracy of data, while the service life of equipment is substantially increased, operation maintenance personnel is decreased to the maintenance frequency of equipment；
2) present invention uses light correlation oil smoke detection device, it is not necessary to which sampling and delivery, timeliness is high, data reading speed
Fastly, real-time monitoring can be carried out；
3) present invention is equipped with protection eyeglass, is designed using drawing and pulling type structure, the actual O&M process after equipment installation
In, it can directly extract wiping removal surface attachments out, avoid and remove complete machine, the big workload safeguarded；
4) present system design is accurate, and equipment design is small and exquisite, easy to install using ring flange fixation, water-inlet-proof gasket with
The design of guiding gutter effectively prevents the entrance of the moisture such as rainwater, and will not deposit portion in the cavity, causes the damage of equipment.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention 1；
Fig. 2 is schematic structural view of the invention 2；
Fig. 3 is partial structure diagram 1 of the present invention；
Fig. 4 is partial structure diagram 2 of the present invention；
Fig. 5 is partial structure diagram 3 of the present invention；
Fig. 6 is partial structure diagram 4 of the present invention；
Fig. 7 is partial structure diagram 5 of the present invention；
Fig. 8 is detection mouth top view；
Fig. 9 is the whole axis side view of the present invention；
Figure 10 is main view of the present invention.
Appended drawing reference:
1- fixed flange, 11- micro air pump, 12- plant-grid connection device, 2- light signal chamber, 21- lens fender bracket,
The fixed bracket of 212- zero diopter lens, 22- concave, 221- sheath stomata, 223- annular air channel, 23- optical lens, 24- detection mouth,
241- fixing lug boss, 242- ventilation block, 25- photelectric receiver, 3- connecting cross beam, the road 31- Qiao Qifu, 4- light source generation cavity, 45-
Light source generator, 111- inflatable mouth, 112- bleeding point, 51- excessive air drain, 52- oil scupper.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The purpose of the present invention is to provide a kind of correlation cooking fume device with sheath gas shielded, due to cooking fume
The particularity of device, it is necessary to be mounted in fume pipeline, Long Term Contact oil smoke.A large amount of oil smoke hold very much when passing through detection zone
It is easily adhered to the surface of optical lens, causes data accuracy to give a discount, so how to improve the service efficiency of product, only to the greatest extent may be used
The few pollution eyeglass of energy, is to solve the problems, such as the more reliable solution at present.
Light correlation oil smoke detection device with sheath gas shielded, by fixed flange 1, light source generation cavity 4, light signal
Chamber 2 and connecting cross beam 3 form, and the fixed flange 1, light signal chamber 2 and light source generation cavity 4 are hollow cylinder, according to
Secondary center of circle arranged in co-axial alignment from left to right, the fixed flange 1 and light signal chamber 2 link together, the light signal chamber 2
It is equipped with gap between light source generation cavity 4, connecting cross beam 3 is equipped between the light source generation cavity 4 and light signal chamber 2, it is special
Sign is:
Fixed flange 1: being equipped with micro air pump 11 inside the fixed flange 1, the micro air pump 11 includes to blow
Port 111 and bleeding point 112；
Light signal chamber 2: it is successively provided with photelectric receiver 25, optical lens from left to right inside the light signal chamber 2
Mirror 23 and detection mouth 24；
Light source generation cavity 4: it is successively provided with light source generator 45, optical lens from right to left inside the light source generation cavity 4
Mirror 23 and detection mouth 24；
Connecting cross beam 3: 3 both ends of connecting cross beam are separately connected the inside of light source generation cavity 4 and light signal chamber 2, with
The connected one end in 2 side of light signal chamber also extends the inside for being connected to the fixed flange 1, inside the connecting cross beam 3
It offers through the channel at both ends, is the road Qiao Qifu 31；
Wherein, the photelectric receiver 25 inside the light signal chamber 2, optical lens 23, detection mouth 24 and the light source
Light source generator 45, optical lens 23 and the setting of 24 center of circle coaxial-symmetrical of detection mouth, the detection mouth 24 inside generation cavity 4 are
Hollow cylinder is perforated through the side of light signal chamber 2 and light source generation cavity 4；
The fixed bracket 22 of concave, the bottom of the detection mouth 24 are additionally provided between the detection mouth 24 and optical lens 23
It is connected with the fixed bracket 22 of concave, the fixed bracket 22 of the concave offers sheath stomata (221), and the sheath stomata (221) is logical
Hole, one end communication with detection mouth 24 of the sheath stomata (221), the other end are blown with micro air pump 11 in the fixed flange 1
Port 111 is respectively connected together by tracheae, and the fixed bracket 22 of the concave is equipped with through-hole, the through-hole and optical lens 23
It is coaxial with detection mouth 24.
Further, between the fixed bracket 22 of the concave and the detection mouth 24, it is additionally provided with fixing lug boss 241, it is described
The fixed bracket 22 of concave and detection mouth 24 pass through fixing lug boss 241 and link together, and also are provided in fixing lug boss 241 and concave
The fixed corresponding through-hole of bracket 22；
The top of fixing lug boss 241 is hollow ring, and internal diameter is slightly larger than the outer diameter of 24 bottom of detection mouth, with detection mouth
After 24 bottoms are set in together, sealing is formed；
The lower part of fixing lug boss 241, to be rectangular, the upper surface of the fixed bracket 22 of concave offers corresponding concave and lacks
Mouthful, when the two is bolted together, it can also form sealing.
Further, the upper surface of the fixed bracket 22 of the concave, is equipped with a concave annular air channel 223, the annular
Air flue 223 is connected with sheath stomata (221)；
At the bottom opening of the fixing lug boss 241, along its circumference, the ventilation block of several perforations is uniformly offered
242, the ventilation block 242 is located at the surface of annular air channel 223.
It further, further include lens protection device, the lens protection device includes that lens fender bracket 21 and zero diopter are saturating
Mirror 212, the lower part of the lens fender bracket 21 are inlaid with zero diopter lens 212, and the zero diopter lens 212 are arranged in optical lens 23
Between the fixed bracket 22 of concave, the surface of the light source generation cavity 4 and light signal chamber 2 coaxial with the optical lens 23
Equipped with aperture, the lens protection device is inlayed wherein.
Further, inside the detection mouth 24 in horn-like, top internal diameter is greater than bottom inner diameter, wide at the top and narrow at the bottom.
Further, the top of the detection mouth 24 is divided into excessive air drain 51 and oil scupper 52, overflow air drain and oil scupper all from
24 inner bottom opening of detection mouth extends to 24 inner tip of detection mouth, and the inclination angle of the oil scupper 52 is greater than the air drain 51 that overflows
Inclination angle.
It is further expalined below with reference to Fig. 1-10 pairs of the principle of the present invention:
This product in actual use, fixed flange 1 is spirally connected by screw and is fixed on walling of flue, fixed flange
1 is equipped with plant-grid connection device 12, and the plant-grid connection device 12 is by electric wire respectively at light source generator 45 and photelectric receiver
25 electrical connections, and enough electric power is provided.
The light source generator 45 of light source emission cavity 4 generates light beam after being powered, by the optical lens 23 in light source generation cavity 4
Focus on light beam is formed, the smoke particle object in sampled air enters between light source generation cavity 4 and light signal chamber 2 with air-flow
Gap.Smoke particle object can form photosensitive area when passing through with focus on light beam, and some light of focus on light beam be reacted, shape
At scattering light.The scattering light feeds back to photelectric receiver 25 after the optical lens 23 in light signal chamber 2 filters,
Photelectric receiver 25 carries out photoelectric conversion to the luminous flux of the light beam, and it is dense to obtain collected smoke particle object after amplification and processing
Equivalent is spent, to form signal output.
Three-way air valve can also be arranged in the inside of fixed flange 1, by the way that tracheae is arranged by the pumping in micro air pump 11
The sheath stomata 221 in sheath stomata 221 and light signal chamber 2 in mouth 112, light source generation cavity 4 connects.Sheath gas is passing through sheath gas
Behind hole 221, it can enter in the annular air channel 223 of the fixed bracket 22 of concave.Due to being provided with annular air channel 223, sheath gas can be more
The inside of detection mouth 24 is uniformly spilled over to from the ventilation block 242 of 241 bottom of fixing lug boss.
The effect in the road Qiao Qifu 31 is may be used as the cabling pipeline in air supply pipe and electric wire.
The inside of detection mouth 24 is in horn-like, inclination angle of the inclination angle greater than the air drain 52 that overflows of oil scupper 51, the small of air drain 52 of overflowing
Angle can improve the accurate application range of sheath gas jet to the greatest extent.And the wide-angle of oil scupper 51, then it can be effective
After avoiding this equipment long-play, oil smoke is attached to 24 medial surface of detection mouth, even if after oil smoke attachment, it also can be with oil scupper
52 wide-angle, is slowly discharged.After long-term use, it still inevasible can be adsorbed onto certain obstinate smoke particle,
It only needs to disassemble lens protection device, wipe clean zero diopter lens 212 and then reinstalls.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. the light correlation oil smoke detection device with sheath gas shielded is believed by fixed flange (1), light source generation cavity (4), light source
Number chamber (2) and connecting cross beam (3) composition, the fixed flange (1), light signal chamber (2) and light source generation cavity (4) are sky
Heart cylindrical body, successively center of circle arranged in co-axial alignment, the fixed flange (1) and light signal chamber (2) link together from left to right,
Gap, the light source generation cavity (4) and light signal chamber (2) are equipped between the light signal chamber (2) and light source generation cavity (4)
Between be equipped with connecting cross beam (3), it is characterised in that:
Fixed flange (1): being equipped with micro air pump (11) inside the fixed flange (1), micro air pump (11) packet
Containing inflatable mouth (111) and bleeding point (112)；
Light signal chamber (2): it is successively provided with photelectric receiver (25), optics from left to right inside the light signal chamber (2)
Lens (23) and detection mouth (24)；
Light source generation cavity (4): it is successively provided with light source generator (45), optics from right to left inside the light source generation cavity (4)
Lens (23) and detection mouth (24)；
Connecting cross beam (3): connecting cross beam (3) both ends are separately connected the interior of light source generation cavity (4) and light signal chamber (2)
Portion, the one end being connected with light signal chamber (2) side also extend the inside for being connected to the fixed flange (1), the connection
It is offered inside crossbeam (3) through the channel at both ends, is the road Qiao Qifu (31)；
Wherein, the internal photelectric receiver (25) of the light signal chamber (2), optical lens (23), detection mouth (24) with it is described
The internal light source generator (45) of light source generation cavity (4), optical lens (23) and the setting of detection mouth (24) center of circle coaxial-symmetrical, institute
Stating detection mouth (24) is hollow cylinder, is perforated through the side of light signal chamber (2) and light source generation cavity (4)；
It is fixed bracket (22) that concave is additionally provided between the detection mouth (24) and optical lens (23), the bottom of the detection mouth (24)
Portion is connected with concave fixed bracket (22), and the concave fixed bracket (22) offers sheath stomata (221), the sheath stomata
(221) be through-hole, one end communication with detection mouth (24) of the sheath stomata (221), the other end with it is micro- in the fixed flange (1)
The inflatable mouth (111) of type air pump (11) is respectively connected together by tracheae, and the concave fixed bracket (22) is equipped with through-hole,
The through-hole and optical lens (23) and detection mouth (24) are coaxial.
2. as described in claim 1 with the light correlation oil smoke detection device of sheath gas shielded, it is characterised in that: the concave
It between fixed bracket (22) and the detection mouth (24), is additionally provided with fixing lug boss (241), the concave fixed bracket (22) and inspection
It surveys mouth (24) to link together by fixing lug boss (241), and also be provided on fixing lug boss (241) and concave is fixed bracket (22)
Corresponding through-hole；
The top of fixing lug boss (241) is hollow ring, and internal diameter is slightly larger than the outer diameter of detection mouth (24) bottom, with detection mouth
(24) after bottom is set in together, sealing is formed；
The lower part of fixing lug boss (241), to be rectangular, the upper surface of concave fixed bracket (22) offers corresponding concave and lacks
Mouthful, when the two is bolted together, it can also form sealing.
3. as claimed in claim 1 or 2 with the light correlation oil smoke detection device of sheath gas shielded, it is characterised in that: described
The upper surface of concave fixed bracket (22), is equipped with a concave annular air channel (223), the annular air channel (223) and sheath stomata
(221) it is connected；
At the bottom opening of the fixing lug boss (241), along its circumference, the ventilation block of several perforations is uniformly offered
(242), ventilation block (242) is located at the surface of annular air channel (223).
4. as described in claim 1 with the light correlation oil smoke detection device of sheath gas shielded, it is characterised in that: further include
Mirror protective device, the lens protection device include lens fender bracket (21) peaceful optical lens (212), the lens fender bracket
(21) lower part is inlaid with zero diopter lens (212), and zero diopter lens (212) setting is in optical lens (23) and the fixed branch of concave
Between frame (22), coaxially with the optical lens (23), the surface of the light source generation cavity (4) and light signal chamber (2) is equipped with
Aperture, the lens protection device are inlayed wherein.
5. as described in claim 1 with the light correlation oil smoke detection device of sheath gas shielded, it is characterised in that: the detection
In horn-like inside mouthful (24), top internal diameter is greater than bottom inner diameter, wide at the top and narrow at the bottom.
6. the light correlation oil smoke detection device as claimed in claim 1 or 5 with sheath gas shielded, it is characterised in that: described
It is divided into excessive air drain (51) and oil scupper (52) at the top of detection mouth (24), excessive air drain and oil scupper are all from detection mouth (24) inner bottom
Extend at end opening to detection mouth (24) inner tip, the inclination angle of the oil scupper (52) is greater than the inclination angle of excessive air drain (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811436956.0A CN109406352A (en) | 2018-11-28 | 2018-11-28 | Light correlation oil smoke detection device with sheath gas shielded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811436956.0A CN109406352A (en) | 2018-11-28 | 2018-11-28 | Light correlation oil smoke detection device with sheath gas shielded |
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| Publication Number | Publication Date |
|---|---|
| CN109406352A true CN109406352A (en) | 2019-03-01 |
Family
ID=65456139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811436956.0A Pending CN109406352A (en) | 2018-11-28 | 2018-11-28 | Light correlation oil smoke detection device with sheath gas shielded |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594455A (en) * | 2019-09-25 | 2019-12-20 | 佛山市顺德区美的洗涤电器制造有限公司 | Check valve component and kitchen appliance |
| CN110617534A (en) * | 2019-09-25 | 2019-12-27 | 佛山市顺德区美的洗涤电器制造有限公司 | Sealing plug, oil smoke sensing device and kitchen equipment |
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| GB0304528D0 (en) * | 2002-03-01 | 2003-04-02 | Msp Corp | Wide-range particle counter |
| CN103257108A (en) * | 2013-05-06 | 2013-08-21 | 许楷楠 | Sheath gas protection method and device for optical gas measurement instrument |
| CN108181213A (en) * | 2017-12-29 | 2018-06-19 | 汉威科技集团股份有限公司 | A kind of outdoor constant current pump suction type laser dust detection device |
| CN209387465U (en) * | 2018-11-28 | 2019-09-13 | 苏州源慧达智能科技有限公司 | Light correlation oil smoke detection device with sheath gas shielded |
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- 2018-11-28 CN CN201811436956.0A patent/CN109406352A/en active Pending
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| CN110617534A (en) * | 2019-09-25 | 2019-12-27 | 佛山市顺德区美的洗涤电器制造有限公司 | Sealing plug, oil smoke sensing device and kitchen equipment |
| CN110594455B (en) * | 2019-09-25 | 2021-10-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Check valve component and kitchen appliance |
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