CN109297742B - Cooking fume generator - Google Patents
Cooking fume generator Download PDFInfo
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- CN109297742B CN109297742B CN201811392459.5A CN201811392459A CN109297742B CN 109297742 B CN109297742 B CN 109297742B CN 201811392459 A CN201811392459 A CN 201811392459A CN 109297742 B CN109297742 B CN 109297742B
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- oil
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- 239000003517 fume Substances 0.000 title claims abstract description 15
- 238000010411 cooking Methods 0.000 title claims description 4
- 239000000779 smoke Substances 0.000 claims abstract description 79
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 239000012159 carrier gas Substances 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000003860 storage Methods 0.000 claims abstract description 21
- 239000006233 lamp black Substances 0.000 claims abstract description 10
- 239000011261 inert gas Substances 0.000 claims abstract description 9
- 238000005192 partition Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 2
- 239000004509 smoke generator Substances 0.000 claims description 2
- 239000004071 soot Substances 0.000 claims 6
- 239000003921 oil Substances 0.000 description 195
- 239000002245 particle Substances 0.000 description 13
- 239000003595 mist Substances 0.000 description 10
- 238000001514 detection method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 239000008157 edible vegetable oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a catering lampblack generator, which comprises an oil storage tank, a horizontally placed heating mechanism, a vertically arranged carrier gas channel and an oil outlet channel, wherein the top of the oil storage tank is provided with an oil inlet communicated with external air, one end of the oil outlet channel is communicated with the bottom of the oil storage tank, the other end of the oil outlet channel is provided with an atomizing nozzle, the atomizing nozzle extends into the heating mechanism along the vertical direction, and the oil outlet channel is also provided with an oil pump and a flow limiting valve; the oil inlet of the flow limiting valve is communicated with the oil outlet of the oil pump; one end of the heating mechanism is closed, and the other end is provided with an oil smoke outlet; the oil fume outlet is communicated with the carrier gas channel; the lower end of the carrier gas channel is communicated with a high-pressure inert gas source, and the upper end of the carrier gas channel is provided with a lampblack test port; a pressure reducing valve is also arranged on the carrier gas channel below the oil smoke outlet; the heating temperature of the heating mechanism is higher than the smoke point temperature of the oil in the oil storage tank. The catering lampblack generator can generate continuous and uniform lampblack sources under the normal opening state.
Description
Technical Field
The invention relates to a metering detection technology, in particular to a catering lampblack generator.
Background
In the daily life and working process of people, the catering oil smoke waste gas brings more and more serious air pollution problem, and purification treatment is unprecedented. At present, the oil smoke purifier is mainly utilized to effectively reduce the oil smoke emission, so that the quality and performance indexes of the oil smoke purifier are ensured to meet the requirements of related technical standards under the detection condition of unified standards.
When the catering oil fume purifier is tested or detected, a stable oil fume generating source is required to generate smoke, and the smoke generation state of the oil fume generating source has great influence on the detection result. In the prior art, the fuming mode is mainly used for directly dripping the oiling material on the heater to carry out heated fuming, and has the following obvious defects:
1) In practice, quantitative control is difficult;
2) The concentration of the generated oil smoke is unstable in different time and space;
3) The fuming persistence is poor, and the lampblack is discontinuous;
4) The repeatability and reproducibility of the oil smoke concentration are poor;
5) Some electric heating equipment has a fusing protection function, the fusing protection time is too long, and the heating state is discontinuous, so that the lampblack has volatility and discontinuity;
6) The oil smoke is generated in a mode that the heating equipment is heated by open fire, the actual flame heating state (such as flame size, heating temperature, flame disturbance and the like) of the open fire is difficult to quantitatively reproduce, the actual heating state of the oil is caused to have great randomness, and when the heating temperature is high and the oil smoke concentration is high, fire disasters are easy to occur in a narrow and sealed oil smoke pipeline, and potential safety hazards are generated.
Therefore, the existing fuming mode is difficult to carry out experimental use under the same condition and equipment detection and result judgment under the unified standard condition on the same site or different sites, and is more difficult to popularize and use in a large scale.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a catering lampblack generator.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the catering oil fume generator comprises an oil storage tank, a horizontally placed heating mechanism, a vertically arranged carrier gas channel and an oil outlet channel, wherein an oil inlet communicated with the outside air is formed in the top of the oil storage tank, one end of the oil outlet channel is communicated with the bottom of the oil storage tank, an atomizing nozzle is arranged at the other end of the oil outlet channel, the atomizing nozzle stretches into the heating mechanism along the vertical direction, and an oil pump and a flow limiting valve are further arranged on the oil outlet channel; an oil inlet of the flow limiting valve is communicated with an oil outlet of the oil pump;
one end of the heating mechanism is closed, and the other end of the heating mechanism is provided with an oil smoke outlet; the oil smoke outlet is communicated with the carrier gas channel, and the lower end of the carrier gas channel is communicated with a high-pressure inert gas source; the upper end of the carrier gas channel is provided with an oil smoke test port;
a pressure reducing valve is also arranged on the carrier gas channel below the oil smoke outlet;
the heating temperature of the heating mechanism is higher than the smoke point temperature of the oil in the oil storage tank.
The atomizing nozzle comprises a base and a conical oil cover, and the bottom surface of the oil cover is fixedly connected with the top surface of the base; oil outlet openings are uniformly arranged on the side face of the oil cover at intervals.
The oil outlet opening is rectangular in shape, and the axes of the rectangle are all arranged on a conical bus of the oil cover; the number of the rectangular oil outlet openings is more than or equal to 2.
Partitions are uniformly arranged in the rectangle at intervals.
The oil outlet opening is in the shape of a round hole, and the round hole is distributed on the conical side surface of the oil cover.
The included angle between the conical generatrix of the oil cover and the conical bottom surface is less than or equal to 60 degrees.
The atomizing nozzle and the oil outlet channel adopt a split structure.
And a reflux branch is further arranged between the oil inlet and the oil outlet of the oil pump.
The atomizing nozzle is arranged at the closed end of the heating mechanism.
The oil pump adopts a constant-power oil pump.
Compared with the prior art, the catering oil fume generator has the advantages that the oil pump pumps out the oil in the oil storage tank, the oil flows to the heating mechanism at a stable flow under the adjustment action of the flow limiting valve, the oil with high flow rate is atomized into normal-temperature oil mist at first under the cutting action of the atomizing nozzle, the normal-temperature oil mist exchanges energy with the heating mechanism, and the heating mechanism sufficiently heats and atomizes the normal-temperature oil mist sprayed out of the atomizing nozzle at high speed at high temperature for two times to form oil fume. The high-pressure inert gas is used as carrier gas through the decompression of the decompression valve, the oil smoke outlet is connected with the carrier gas channel as a branch, when the high-speed carrier gas flow passes through the carrier gas pipeline, partial vacuum negative pressure is generated on the oil smoke outlet, so that one-way suction flow effect is generated on oil smoke in the heating mechanism, on one hand, oil mist in the heating mechanism is changed into oil smoke through heating and then directionally flows out to be mixed with the carrier gas, the oil smoke is discharged through the oil smoke test port, and on the other hand, the atomization effect of the atomizing nozzle on oil materials is promoted. The catering oil smoke generator can generate continuous and uniform oil smoke sources under the normal opening state, and the oil smoke sources are continuously sprayed out through the oil smoke test port, so that the stable and continuous detection of the oil smoke purifier is facilitated, the purpose of truly and reasonably evaluating various indexes of the oil smoke purifier is further achieved, and the error problem caused by factors such as unstable initial oil smoke concentration and uncontrollable oil smoke concentration when the oil smoke purifier is detected and evaluated under the simulated actual oil smoke environment is solved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a front view of embodiment 1 of the atomizing nozzle of FIG. 1;
FIG. 3 is a top view of the atomizing nozzle of FIG. 2;
fig. 4 is a front view of embodiment 2 of the atomizing nozzle in fig. 1;
FIG. 5 is a top view of the atomizing nozzle of FIG. 4;
FIG. 6 is a front view of embodiment 3 of the atomizing nozzle of FIG. 1;
fig. 7 is a top view of the atomizing nozzle of fig. 6.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
Referring to fig. 1, a cooking fume generator includes a housing 18, including:
the oil storage tank 4, the top of oil storage tank is equipped with the oil import 1 with outside air intercommunication, is equipped with shield 2 on the oil import, still is equipped with the drainage board 3 that sets up perpendicularly in the cavity of oil storage tank, and the upper end and the oil import of drainage board are connected fixedly, and the oil storage tank still links to each other with liquid level display 5.
The shield is not sealed, but ordinary shielding prevents to fall into the dust, and the drainage board is stainless steel material, but directional drainage oil prevents the unordered nature of the turbulent degree and the flow direction of reinforced, makes reinforced more stable, and the scale of liquid level display can in time reflect the inside oil level height of oil storage tank.
The heating mechanism that the level was placed, the one end of heating mechanism is sealed, and the other end is equipped with the oil smoke export, and heating mechanism can adopt the structure as shown in fig. 1, and it includes the shell, is equipped with heat preservation 8 and hot plate 9 in the shell, and the heat preservation is located between shell and the hot plate, forms the heating chamber between the hot plate, and the axis in heating chamber keeps at horizontal position, and the one end in heating chamber is sealed, and the other end is the oil smoke export. The heating temperature in the heating cavity is higher than the smoke point temperature of the oil in the oil storage tank.
The oil outlet channel, one end of which is communicated with the bottom of the oil storage tank, is provided with an atomizing nozzle 10 at the other end, and extends into the heating cavity along the vertical direction, and is also provided with an oil pump 6 and a flow limiting valve 7; the oil inlet of the flow limiting valve is communicated with the oil outlet of the oil pump.
The lower end of the carrier gas channel is provided with a carrier gas inlet 14 which is communicated with a high-pressure inert gas source (not shown in the figure), and the upper end of the carrier gas channel is provided with a lampblack test port 15; the fume outlet is communicated with the carrier gas channel, and a pressure reducing valve 13 is arranged on the carrier gas channel below the fume outlet. The oil smoke test port is arranged outside the box body, a fireproof cover 16 is arranged outside the oil smoke outlet, and an oil collecting box 17 is arranged outside the fireproof cover.
The exhaust fan 11 is arranged on the side surface of the heating mechanism, and the box body corresponding to the exhaust fan is provided with a ventilation grid 12.
The use of an inert gas as a gas pressure source has the following benefits:
1. inert gas is not inflammable and combustion-supporting, so that potential safety hazards (fire) caused by high-concentration oil smoke in a closed pipeline can be avoided;
2. the oil can undergo thermal oxidation and cracking reactions at high temperature, and inert gas can avoid serious carbon deposition at the heating cavity and the oil smoke outlet, which affects the heating stability and smoke outlet stability of the equipment.
In this embodiment, nitrogen in inert gas is used as a high-pressure gas source.
The outer layer of the oil smoke test port is protected by a fireproof cover, after long-term use, a little oil smoke residues are collected by the oil collecting box, and the oil collecting box can be detached and cleaned regularly.
The oil in the oil storage tank can be any edible oil available in the market.
Referring to fig. 2 and 3 again, embodiment 1 of the atomizing nozzle includes a base 31 and a conical oil cover 32, wherein the bottom surface of the oil cover is fixedly connected with the top surface of the base; the side surface of the oil cover is uniformly provided with 3 rectangular oil outlet openings at intervals, and the axes of the rectangles are all arranged on the conical bus of the oil cover; the included angle between the conical generatrix and the conical bottom surface is less than or equal to 60 degrees, wherein the number of rectangular oil outlet openings is the number for generating oil jet flow streams; the included angle is used to control the jet direction of oil and the included angle between the jet streams. When the number of rectangular oil outlet openings is larger, the oil has correspondingly more jet flow streams; when the included angle is larger, the included angle between the oil jet flow streams is larger, and the oil jet flow streams are more dispersed. The width of the rectangular oil outlet opening is reduced, so that better cutting atomization can be carried out on oil, further oil mist with smaller and more uniform particle size is obtained, the oil mist with smaller and more uniform particle size is easier to be heated fully in the heating cavity, and the oil mist with smaller and more uniform particle size is easier to become oil fume. The number of rectangular oil outlet openings is more than 2.
Referring to embodiment 2 of the atomizing nozzle shown in fig. 4 and 5, the difference from embodiment 1 is that the rectangular oil outlet openings are uniformly provided with partitions 34 at intervals, so that the oil has more jet streams along the axial direction of the rectangular oil outlet openings, and the oil is further cut and atomized.
Referring to fig. 6 and 7 again, embodiment 3 of the atomizing nozzle includes a base 35 and a conical oil cover 36, wherein the bottom surface of the oil cover is fixedly connected with the top surface of the base; embodiment 3 is different from embodiment 1 in that the oil outlet opening is in a circular hole shape instead of a rectangular shape, the side surface of the oil cover is uniformly provided with the circular hole-shaped oil outlet openings 37 at intervals, the circular holes are distributed on the conical side surface of the oil cover to form honeycomb holes, when the opening degree of the flow limiting valve is increased, the flow rate of atomized oil can be increased, and the concentration of oil fume at the outlet is increased. If the number of holes is increased, the aperture size is reduced, better cutting atomization can be carried out on oil, and then oil mist with smaller and more uniform particle size is obtained.
Example 3 is identical to the remainder of example 1.
Through observing the oil smoke test port, can also find that when the oil smoke particle diameter is more inhomogeneous, can more obvious observe that oil smoke test port department has the splash of tiny particle form oil granule, the short touch export oil smoke of heart of a hand, the tiny particle existence of oil smoke that can obviously feel scalding the hand, keep off in the oil smoke test port with the paper handkerchief for a short time, the cluster form oil smoke granule imprinting of inhomogeneous on the discovery paper handkerchief can be obvious. When the oil smoke particle size is finer and more uniform, the small granular oil particles are harder to be observed to splash out at the oil smoke test port, when the oil smoke is discharged by touching the outlet oil smoke with the palm of the hand for a short time, the existence of the small oil smoke particles which scald the hand is harder to be perceived, the hand feeling of the oil smoke is softer, and when the paper towel is blocked at the oil smoke test port for a short time, the phenomenon that the large cluster oil smoke particles are marked on the paper towel is not found, and the tiny oil smoke marks are uniformly dispersed is avoided.
Preferably, the atomizing nozzle and the oil outlet channel can also adopt a split structure, so that the atomizing nozzle with different structures can be preset according to different requirements on the oil smoke concentration and the oil smoke particle size under different working conditions, and can be replaced in time when needed conveniently.
In addition, the atomizing nozzle should be located near the blind end in heating chamber for atomizing nozzle spun oil mist has longer heating path to oil smoke exit, can guarantee that atomizing nozzle spun oil mist heats fully.
As a further improvement, the oil pump adopts a constant-power oil pump, a backflow branch is further arranged between the oil inlet of the oil pump and the oil outlet of the oil pump, the constant-power oil pump can ensure sufficient supply of oil and meet the use condition, the oil can not change due to different oil materials and different temperature throughout the year, the flow of the oil is controlled by a flow limiting valve in specific practical use, and redundant oil flows back to the inlet of the oil pump through the backflow branch and can not generate pressure holding to influence the normal work of the oil pump. The backflow branch can ensure the normal smoothness of oil in the oil pipe on one hand, and prevent the excessive pressure of local oil from influencing the safety of equipment; on the other hand, the oil pump can be protected, and the oil pump is prevented from being empty to be pumped, so that the oil pump is damaged. The normal working oil pump has stable oil pumping flow, stable kinetic energy of the oil is endowed, and the oil flow of the oil outlet channel flowing to the atomizing nozzle can be stably controlled under the specific opening scale of the flow limiting valve, so that the oil pump is a foundation for ensuring stable oil smoke concentration at the outlet of the smoke generating equipment and good reproducibility.
When the device is used, the atomizing nozzle can be selected and replaced according to working condition requirements, a power supply is connected, nitrogen is introduced, carrier gas flow is regulated, then a heating power supply of a heating cavity is turned on, the temperature of the heating cavity is set to 450 ℃ (the smoke point of edible oil in the market is lower than 300 ℃, and certain special oil can exist, and the smoke point exceeds 300 ℃, so that the temperature of the heating cavity can be regulated by a button, generally 350-500 ℃, but the temperature of the heating cavity is ensured to be higher than the smoke point temperature of oil, in order to ensure full secondary high-temperature atomization in the heater, generally the temperature of the heating cavity is higher, after the temperature in the heating cavity is stable, a constant-power oil pump is started, a flow limiting valve is regulated to a preset scale, then normal smoke is generated for 30 minutes, after the purpose of measuring smoke is stable, the smoke can be sampled for many times at a smoke outlet, the smoke concentration and the smoke particle size distribution of the smoke are ensured, then the test is carried out, and when the index meets the working condition requirements, the subsequent test work can be carried out.
It will be appreciated by persons skilled in the art that the above embodiments are provided for the purpose of illustrating the invention and are not intended to be limiting, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true scope of the invention.
Claims (8)
1. A catering oil smoke generator is characterized in that,
the device comprises an oil storage tank, a horizontally placed heating mechanism, a vertically arranged carrier gas channel and an oil outlet channel, wherein the top of the oil storage tank is provided with an oil inlet communicated with external air, one end of the oil outlet channel is communicated with the bottom of the oil storage tank, the other end of the oil outlet channel is provided with an atomizing nozzle, the atomizing nozzle stretches into the heating mechanism along the vertical direction, and the oil outlet channel is also provided with an oil pump and a flow limiting valve; an oil inlet of the flow limiting valve is communicated with an oil outlet of the oil pump;
one end of the heating mechanism is closed, and the other end of the heating mechanism is provided with an oil smoke outlet; the oil smoke outlet is communicated with the carrier gas channel; the lower end of the carrier gas channel is communicated with a high-pressure inert gas source, and the upper end of the carrier gas channel is provided with a lampblack test port;
a pressure reducing valve is also arranged on the carrier gas channel below the oil smoke outlet;
the heating temperature of the heating mechanism is higher than the smoke point temperature of the oil in the oil storage tank;
the atomizing nozzle and the oil outlet channel adopt a split structure;
the oil pump adopts a constant-power oil pump.
2. The catering soot generator according to claim 1, wherein,
the atomizing nozzle comprises a base and a conical oil cover, and the bottom surface of the conical oil cover is fixedly connected with the top surface of the base; the side of the conical oil cover is uniformly provided with oil outlet openings at intervals.
3. The catering soot generator according to claim 2, wherein,
the shape of the oil outlet opening is rectangular, and the axes of the rectangle are all arranged on the conical bus of the oil cover.
4. A catering cooking fume generator according to claim 3, wherein,
partitions are uniformly arranged in the rectangular oil outlet openings at intervals.
5. The catering soot generator according to claim 2, wherein,
the oil outlet opening is in the shape of a round hole, and the round hole is distributed on the conical side surface of the oil cover.
6. The catering soot generator according to claim 2, wherein,
the included angle between the conical generatrix of the oil cover and the conical bottom surface is less than or equal to 60 degrees.
7. The catering soot generator according to claim 1, wherein,
and a reflux branch is further arranged between the oil inlet and the oil outlet of the oil pump.
8. The catering soot generator according to claim 1, wherein,
the atomizing nozzle is arranged at the closed end of the heating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392459.5A CN109297742B (en) | 2018-11-21 | 2018-11-21 | Cooking fume generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392459.5A CN109297742B (en) | 2018-11-21 | 2018-11-21 | Cooking fume generator |
Publications (2)
| Publication Number | Publication Date |
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| CN109297742A CN109297742A (en) | 2019-02-01 |
| CN109297742B true CN109297742B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811392459.5A Active CN109297742B (en) | 2018-11-21 | 2018-11-21 | Cooking fume generator |
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| CN (1) | CN109297742B (en) |
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| AU4311185A (en) * | 1984-06-13 | 1985-12-19 | Ashland Oil, Inc. | Residual oil cracking process using dry gas as lift gas initially in riser reactor |
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2018
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| CN109297742A (en) | 2019-02-01 |
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