CN209179849U - Engine exhaust post-processes mixing arrangement - Google Patents
Engine exhaust post-processes mixing arrangement Download PDFInfo
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- CN209179849U CN209179849U CN201821969864.4U CN201821969864U CN209179849U CN 209179849 U CN209179849 U CN 209179849U CN 201821969864 U CN201821969864 U CN 201821969864U CN 209179849 U CN209179849 U CN 209179849U
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- inner housing
- engine exhaust
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- post
- mixing arrangement
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- 238000002156 mixing Methods 0.000 title claims abstract description 153
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 241000278713 Theora Species 0.000 claims description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 44
- 239000004202 carbamide Substances 0.000 abstract description 44
- 239000007789 gas Substances 0.000 abstract description 42
- 238000012805 post-processing Methods 0.000 abstract description 31
- 238000011144 upstream manufacturing Methods 0.000 abstract description 14
- 238000002425 crystallisation Methods 0.000 abstract description 6
- 230000008025 crystallization Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 48
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 32
- 239000007788 liquid Substances 0.000 description 24
- 238000010531 catalytic reduction reaction Methods 0.000 description 17
- 230000008020 evaporation Effects 0.000 description 13
- 238000001704 evaporation Methods 0.000 description 13
- 229910021529 ammonia Inorganic materials 0.000 description 12
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 230000002045 lasting effect Effects 0.000 description 6
- 238000000197 pyrolysis Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000002937 thermal insulation foam Substances 0.000 description 5
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
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- 230000015572 biosynthetic process Effects 0.000 description 2
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- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
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- 239000002283 diesel fuel Substances 0.000 description 1
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Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
A kind of engine exhaust post-processing mixing arrangement, including outer housing, outlet deflector, inner housing, air flap and blade mixing tube, by the outer housing, the inner housing and the air flap form inlet chamber, the blade mixing tube is located in the inner housing, the outlet deflector closes the space between the outer housing and inner housing, the outlet deflector is equipped with multiple runners for being connected to space in inner housing, to by the inner housing, the air flap, the blade mixing tube and the outlet deflector form the first mixing chamber, by the outer housing, the outlet deflector forms the second mixing chamber；Thus, the utility model structure is simple, it is easy to operate, it can effectively overcome the deficiencies of existing technologies, with stable mixed, lower production cost and assembly difficulty, and exhaust gases upstream heat can be efficiently used, maintains temperature condition needed for the mixed process of urea and exhaust gas, while there is stronger Crystallization.
Description
Technical field
The utility model relates to the technical field of engine exhaust processing more particularly to a kind of post-processing of engine exhaust are mixed
It attaches together and sets.
Background technique
With the increasing of environmentally friendly dynamics, country constantly upgrades the standard of Engine Emissions object discharge.Discharge standard
Upgrading to the PM (particulate matter) of engine exhaust emission, CO (carbon monoxide), HC (hydrocarbon) and NOX (nitrogen oxides)
It is required that also increasingly tighter.And SCR (selective catalytic reduction) technology can be by selective catalytic reduction reaction by engines tail
Harmful substance NOX (nitrogen oxides) in gas generates innocuous substance N2 (nitrogen) and H2O (water).SCR (selective catalytic reduction)
Working principle are as follows: urea liquid is spurted into the exhaust pipe of engine, by motor exhaust post-processing mixing arrangement mist
Change, is broken, being sufficiently mixed after evaporation with exhaust pipe high temperature tail gas.And urea liquid at this time resolves into NH3 at high temperature
(ammonia) and CO2, NH3 (ammonia) under the action of catalysts selective with the harmful substance NOX (nitrogen oxidation in motor exhaust
Object) it chemically reacts, generate innocuous substance N2 (nitrogen) and H2O (water).Due to this selective catalytic reduction reaction process
It is to be completed inside selective catalytic reduction device.So a kind of engine exhaust is needed to post-process mixing arrangement to help to enter
Urea liquid into exhaust pipe carries out more fully broken, atomization and evaporation.Make NOX as much as possible in motor exhaust
(nitrogen oxides) participates in selective catalytic reduction reaction, improves the transformation efficiency of exhaust system, needs by after engine exhaust
Processing mixing arrangement come make urea liquid at high temperature decomposite come NH3 (ammonia) it is more uniform be distributed to SCR (selectivity
Catalysis reduction) on carrier surface.On the other hand, minimum temperature required by selective catalytic reduction reaction is 200 DEG C.Cause
This, the insulating power that engine exhaust post-processes mixing arrangement is also the technical issues that need to address.If excessive urea is molten
Liquid has little time to evaporate at low temperature and be pyrolyzed, and will cause exhaust wall and post-processing mixing arrangement temperature is too low, to form urine
Element crystallization, can block engine exhaust aftertreatment system, engine power performance is caused to decline when serious.
In existing engine exhaust post-processing mixing arrangement, usually pass through setting porous plate, antipriming pipe and blade etc.
Metal structure reaches the mixing of urea liquid and motor exhaust.When urea liquid and porous plate, antipriming pipe and blade etc. are golden
When category components collide, urea liquid, which generates, to be crushed, so that urea liquid is evaporated and is pyrolyzed.For engine
The heat preservation problem of exhaust aftertreatment mixing arrangement, existing technical solution are usually by additionally increasing on mixing arrangement outer surface
Add heat insulation foam and heat shield to achieve the purpose that post-processing mixing arrangement to engine exhaust keeps the temperature.But these prior arts
It has following defects that
(1) (selective catalytic reduction) the carrier surface flow field SCR and NH3 (ammonia) distributing homogeneity are by upstream gas flow
State is affected, and cannot stablize and maintain ideal uniform state；This is because engine discharge throughput, air pressure and
The size of the amount of injection of urea liquid etc. all can carry out irregular fluctuation and (especially exist as the road conditions of vehicle to run are different
It is especially apparent in the post-processing of diesel engine U-shaped structure.), and available engine exhaust aftertreatment mixing arrangement is to upstream gas flow
State is more sensitive, and urea liquid can not be decomposited steadily to the NH3 (ammonia) come at high temperature and be uniformly distributed in SCR
On (selective catalytic reduction) carrier surface.NH3 (ammonia) crosses multizone on SCR (selective catalytic reduction) carrier, is easy to produce
Ammonifying leakage, pollutes environment.And NH3 (ammonia) thin area can make nitrogen oxides (NOX) transformation efficiency too low, part is harmful
Substance oxynitrides (NOX) is directly discharged into atmosphere, pollutes environment.In addition, prolonged NH3 (ammonia) uneven distribution
It is uneven to will lead to SCR (selective catalytic reduction) carrier degradation degree, to influence the whole of engine exhaust aftertreatment system
Body performance.
(2) increase the cost and assembly difficulty of engine exhaust post-processing mixing arrangement；Engine exhaust is post-processed
The heat preservation problem of mixing arrangement, existing technical solution be usually by additionally increase on mixing arrangement outer surface heat insulation foam and
Heat shield prevents the loss of heat, to achieve the purpose that the internal temperature for improving mixing arrangement.In this way, just needing additionally to increase
Add the parts such as heat insulation foam and heat shield, ultimately increases the cost of engine exhaust aftertreatment system.
(3) engine exhaust aftertreatment system, especially mixing arrangement Crystallization are poor；Currently, with more stringent
Six standard of automobile exhaust regulation state at hand so that the current the amount of injection of urea liquid and the ratio of engine exhaust flow
Example relationship is more radical.For example, in the case of lower temperature, smaller extraction flow, needing to spray into diesel engine
To generate harmful substance nitrogen oxides (NOX) in more NH3 (ammonia) and tail gas chemistry occurs for more urea liquids
Reaction reduces the discharge amount of NOX (nitrogen oxides) to a greater extent.In existing type scheme, excessive urea liquid is lower
At a temperature of have little time evaporate and be pyrolyzed, will cause local tube wall and After-treatment technics mixing arrangement temperature be too low, thus shape
At urea crystals, engine exhaust aftertreatment system can be blocked when serious, engine power performance is caused to decline.
For this purpose, the designer of the utility model, in view of drawbacks described above, by concentrating on studies and designing, synthesis is long-term for many years
It is engaged in the experience and achievement of related industry, researching and designing goes out a kind of engine exhaust post-processing mixing arrangement, to overcome above-mentioned lack
It falls into.
Utility model content
The purpose of this utility model is to provide a kind of engine exhausts to post-process mixing arrangement as a result, and structure is simple,
It is easy to operate, it can effectively overcome the deficiencies of existing technologies, have stable mixed, lower production cost and assembly difficult
Degree.And exhaust gases upstream heat can be efficiently used, temperature condition needed for the mixed process of urea and exhaust gas is maintained.
To achieve the above object, the utility model discloses a kind of engine exhausts to post-process mixing arrangement, including shell
Body, outlet deflector, inner housing, air flap and blade mixing tube, it is characterised in that:
The outer housing is hollow cylindrical member, and the inner housing is positioned at the intracorporal cylindrical member of the shell, institute
Air flap is stated to close the air inlet end face of the inner housing and form multiple gas passages between the outer housing, thus by
The outer housing, the inner housing and the air flap form inlet chamber, and the blade mixing tube is the tubular structure of upper opening
Part, be located at the inner housing in, and the blade mixing tube be equipped with multiple through-holes for being connected to space in inner housing, it is described go out
The periphery of conductance flowing plate is resisted against the space between the inner wall of the outer housing and the closing outer housing and inner housing, it is described go out
Conductance flowing plate is equipped with multiple runners for being connected to space in inner housing, thus by the inner housing, the air flap, the leaf
Piece mixing tube and the outlet deflector form the first mixing chamber, are formed second by the outer housing, the outlet deflector and are mixed
Close chamber.
Wherein: the outlet deflector includes discoid flow guide plate body, and the periphery of the flow guide plate body fits in
The inner wall of outer housing, the middle part of the flow guide plate body be equipped with it is multiple include arc in an opening and covering opening arch upward portion from
Channel or multiple apertures and the arc being connected to inner housing arches upward.
Wherein: the flow guide plate body multiple arcs arch upward channel or aperture periphery be additionally provided with it is multiple circumferentially circumferential
The arc-shaped slot of distribution and multiple through-holes are so that outlet deflector can be connected to first mixing chamber and described second mixed
Close chamber.
Wherein: the arc arch upward channel be four and circumferentially equidistant interval setting or multiple apertures be around conductance out
At least two holes of at least one circle spaced set of flowing plate axis setting.
Wherein: the blade mixing tube includes the mixing tube body of upper opening, and the tube body periphery of the mixing tube body is set
There are multiple through-holes, each through-hole is equipped with the guide vane being in tilted layout.
Wherein: the multiple through-hole is upper and lower spaced multiple rows of through-hole, and the through-hole of odd row is equipped with from top to bottom
To inclined first guide vane in a direction, and the through-hole of even rows is all provided with another oriented direction inclined from top to bottom
Two guide vanes.
Wherein: the air flap includes the round plate of sealed inside case body air inlet end face, the periphery diameter of the round plate
To multiple butting sections are extended, the ora terminalis of the multiple butting section is resisted against the inner wall of outer housing.
Wherein: each butting section is equipped with multiple through-holes, and the position that butting section is connect with round plate is logical equipped with arc
Slot.
Wherein: the axis of the axis and the inner housing of the blade mixing tube is mutually perpendicular to, and the blade mixes
The axis of pipe is overlapped with the axis of the inner housing mounting hole.
Wherein: the inlet chamber is the coaxial structure that is nested with first mixing chamber.
By above structure it is found that the engine exhaust post-processing mixing arrangement of the utility model has the effect that
1, it can be improved the uniformity in (selective catalytic reduction) the carrier surface flow field SCR and NH3 (ammonia) distribution and steady
It is qualitative.And the exhaust gases upstream heat of engine discharge can be efficiently used, engine exhaust post-processing mixing arrangement is reduced
Cost.The Crystallization of engine exhaust aftertreatment system is improved simultaneously.
2, mixed to engine exhaust post-processing to efficiently use exhaust gases upstream bring high-temperature gas by setting inlet chamber
It attaches together to set and carries out lasting heating, to achieve the purpose that the internal temperature for improving mixing arrangement.It does not need additionally to increase heat-insulated
Cotton and heat shield reduce the cost of engine exhaust post-processing mixing arrangement.In addition, exhaust gas flows through inlet chamber outer ring runner,
Initial flow regime is changed, circumferentially to enter the first mixing chamber along annular inlet chamber, this intake method improves mixing
Stability.
3, tail gas urea droplets and engine being discharged by the way that first mixing chamber and second mixing chamber is arranged
It is sufficiently mixed twice.And the air flap and the blade mixing tube are set in mixing chamber, urea liquid is carried out
Adequately broken, evaporation and pyrolysis.Finally by the unique outlet deflector is designed, mixed gas is rectified and is led
Stream.So just urea liquid steadily, fully can be decomposited to next NH3 (ammonia) at high temperature to be uniformly distributed in
On SCR (selective catalytic reduction) carrier surface, thus realize improve (selective catalytic reduction) the carrier surface flow field SCR and
The uniformity and stability of NH3 ammonia distribution.
4, engine exhaust post-processing mixing arrangement obtains continuous high temperature heating, enhances the evaporation of urea liquid, and
By being sufficiently mixed twice for first mixing chamber and second mixing chamber, when extending the evaporation and pyrolysis of urea liquid
Between, to improve the Crystallization of device.
The detailed content of the utility model can be obtained by aftermentioned explanation and institute's attached drawing.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of the engine exhaust post-processing hybrid system of the utility model.
Fig. 2 shows the decomposition diagram of Fig. 1.
Fig. 3 shows the schematic diagram of the engine exhaust post-processing mixing arrangement of the utility model.
Fig. 4 shows the schematic diagram of the engine exhaust post-processing mixing arrangement other direction of the utility model.
Fig. 5 shows the schematic diagram of internal structure of the engine exhaust post-processing mixing arrangement of the utility model.
Fig. 6 shows the decomposition diagram of the engine exhaust post-processing mixing arrangement of the utility model.
Fig. 7 shows the decomposition diagram of the engine exhaust post-processing mixing arrangement other direction of the utility model.
Fig. 8 shows the assembling schematic diagram of the engine exhaust post-processing mixing arrangement of the utility model.
Fig. 9 shows the structural schematic diagram of outlet deflector in the utility model.
Figure 10 shows the structural schematic diagram of blade mixing tube in the utility model.
Figure 11 and 12 shows that the air-flow of the engine exhaust post-processing mixing arrangement of the utility model moves towards figure.
Figure 13 shows the cross-sectional view of the engine exhaust post-processing hybrid system of the utility model.
Figure 14 shows the structural schematic diagram of inner housing in the utility model.
Appended drawing reference:
1, DPF (diesel particulate filter) device；2, engine exhaust post-processes mixing arrangement；3, SCR (selective catalysis
Reduction) device；4, inlet chamber；5, the first mixing chamber；6, the second mixing chamber；7, nozzle carrier；8, outer housing；9, outlet deflector；
10, inner housing；11, air flap；12；Blade mixing tube；13, DPF (diesel particulate filter) carrier；14, SCR (selectivity
Catalysis reduction) carrier；15, jointing clip；101, mounting hole；91, flow guide plate body；92, arc arches upward channel；93, arc is logical
Slot；94, through-hole；121, tube body is mixed；122, mounting flange；123, the first guide vane；124, the second guide vane.
Specific embodiment
Referring to Fig. 1 and 2, it is shown that the engine exhaust of the utility model post-processes hybrid system, the engine exhaust
Post-processing hybrid system includes DPF (diesel particulate filter) device 1, engine exhaust post-processing mixing arrangement 2 and SCR
(selective catalytic reduction) device 3, the arrow direction in figure indicate the dispatch direction of gas, and the DPF device 1 is set to hair
The inlet end of motivation exhaust aftertreatment mixing arrangement 2, the SCR device 3 are set to engine exhaust post-processing mixing arrangement 2
Outlet side, and as shown in Fig. 2, the DPF device 1 and engine exhaust post-processing mixing arrangement 2 are equipped with the flange of connection
And the two flange is attached to fixed jointing clip 15, the SCR device 3 and engine exhaust post-process mixing arrangement
2 are equipped with the flange of connection and the two flange are attached to fixed jointing clip 15, so that three devices be fastened
Link together.
Referring to Fig. 3 to Fig. 8, it is shown that the engine exhaust of the utility model post-processing mixing arrangement 2 wherein one preferably
Embodiment.
In this embodiment, engine exhaust post-processing mixing arrangement may include outer housing 8, outlet deflector 9,
Inner housing 10, air flap 11 and blade mixing tube 12, the outer housing 8 are hollow cylindrical member, and the inner housing 10 is
Cylindrical member in the outer housing 8, and formation certain distance is between the two with for gas to pass through, the blade mixing tube
12 are set in inner housing, and the air flap 11 is set in outer housing and in the air inlet end face of inner housing, the outlet
Deflector 9 is located in the shell and in the gas outlet end face of the inner housing, wherein the outer housing 8 is equipped with and concaves
Nozzle carrier 7.
Wherein, the air flap 12 closes the inner housing 10 air inlet end face and the shape between the outer housing 8
At multiple gas passages, thus by the outer housing 8, the inner housing 10 and the air flap 12 form inlet chamber 4 (referring to
Figure 13), the blade mixing tube 12 is the cylindrical member of upper opening, from the mounting hole 101 of 10 periphery of inner housing (referring to
The inner housing 10 Figure 14) is protruded into, and the blade mixing tube 12 is equipped with multiple through-holes for being connected to space in inner housing 10, institute
State the inner wall that the periphery of outlet deflector 9 is resisted against the outer housing 8 and the sky between the closing outer housing 8 and inner housing 10
Between, the middle part of the outlet deflector 9 is equipped with multiple runners for being connected to space in inner housing 10, thus by the inner housing,
The air flap, the blade mixing tube and the outlet deflector form the first mixing chamber 5 (referring to Figure 13), by described outer
Shell, the outlet deflector form the second mixing chamber 6 (referring to Figure 13), the DPF (diesel oil in the inlet chamber and DPF device 1
Particulate filter) carrier 13 is connected, and is connected by the blade mixing tube with first mixing chamber.Described second is mixed
It closes chamber to be connected with SCR (selective catalytic reduction) carrier 14 in SCR device 1, and passes through outlet deflector and described first
Mixing chamber is connected.The tail gas of engine discharge is directly entered described after coming out first from DPF (diesel particulate filter) carrier
Inlet chamber.Then enter first mixing chamber from the inlet chamber by the blade mixing tube, and mixed in the blade
It is mixed in pipe and first mixing chamber with urea liquid.Last urea liquid and the tail gas of engine discharge pass through first
Second mixing chamber is entered by the arcuate socket gradually swelled on the outlet deflector after secondary mixing, and carries out second and mixes
Enter SCR (selective catalytic reduction) carrier after conjunction.
After enabling the high-temperature gas to come from upstream to first pass through the inlet chamber by inlet chamber in the application as a result,
Enter back into first mixing chamber.In this way, upstream bring high-temperature gas just can be efficiently used to first mixing chamber
Lasting heating is carried out, to achieve the purpose that improve the first mixing chamber internal temperature.It does not need additionally to increase heat insulation foam
And heat shield, reduce the cost of engine exhaust post-processing mixing arrangement.Since the heat of the inlet chamber is to described first
Mixing chamber carries out lasting heating, enhances the evaporation effect of urea droplets in first mixing chamber.
The first mixing chamber and the broken of the second mixing chamber enhancing urea droplets, evaporation and pyrolysis are also utilized simultaneously.By two
Secondary mixing improves the mixed effect of motor exhaust and urea liquid.
Wherein, referring to Fig. 9, it is shown that a preferred embodiment of outlet deflector in the utility model, the conductance out
Flowing plate 9 includes discoid flow guide plate body 91, and the periphery of the flow guide plate body 91 is equipped with axially extending flange, with close
Fit in the inner wall of outer housing 8, the middle part of the flow guide plate body 91 can be equipped with multiple circumferentially circumferentially distributed arcs and arch upward
Channel 92, arc channel 92 of arching upward may include that arc in an opening and covering opening arches upward portion, to be formed and inner casing
The connection of body 10, and preferably, the flow guide plate body 91 multiple arcs arch upward channel 92 periphery can also be equipped with it is multiple
Circumferentially circumferentially distributed arc-shaped slot 93 and the multiple through-holes 94 being set between arc-shaped slot 93, and preferably, it is more
A arc arches upward and can also be equipped with multiple through-holes between channel 92 and as a result, by said structure design outlet deflector is connected
The hole for leading to first mixing chamber and second mixing chamber, and having water conservancy diversion and gas rotating being allowed to act on.It is described have water conservancy diversion and
Can allow gas rotating act on hole gradually swelled from the water conservancy diversion plate washer plane, and with cambered and opening direction with
The axis vertical distribution of the outlet deflector.
Wherein, the arc arch upward portion in flow guide plate body gradually protuberance and with cambered, it is preferred that the arc
The axis vertical distribution that channel 92 is four and opening direction and the outlet deflector that arches upward certainly arches upward four arcs
Channel 92 is changed to other quantity, and the distribution etc. for perhaps changing venthole size or change venthole can reach corresponding effect,
It belongs in the claim of this application protection scope.For example, being distributed on the outlet deflector around outlet water conservancy diversion at present
Plate axis one is enclosed four and is gradually swelled and with cambered venthole.It in addition to this, can also or N circle point N number of with a circle distribution
The N number of hole of cloth, N are positive integer, i.e. N=1,2,3,4 ....
Referring to Figure 10, it is shown that a preferred embodiment of blade mixing tube, the blade mixing tube in the utility model
12 include the mixing tube body 121 of upper opening, the upper end mounting flange with outward extension of the mixing tube body 121
122, to be easily fixed on the mounting hole 101 of inner housing 10, and the tube body periphery of the mixing tube body 121 is equipped with multiple
Through-hole, each through-hole are equipped with the guide vane being in tilted layout, it is preferred that the multiple through-hole is spaced multiple rows of up and down
Through-hole, circumferentially direction interval is arranged every exhausting hole, and the through-hole of odd row is all provided with oriented direction inclination from top to bottom
The first guide vane 123, and the through-hole of even rows is all provided with inclined second guide vane in another oriented direction from top to bottom
124, so that the water conservancy diversion direction of each circle guide vane is contrary with neighbouring flow deflector, wherein regardless of water conservancy diversion leaf
Piece is contrary or identical, and same effect can be all able to achieve by either changing guide vane size or quantity.Therefore, described above
The form of guide vane belongs to the application range.
Wherein, the air flap 11 includes the round plate of 10 air inlet end face of sealed inside case body, the week of the round plate
Edge extends radially outward multiple butting sections, and the ora terminalis of the multiple butting section is resisted against the inner wall of outer housing 8, thus firm progress
It fixes and forms gas passage, it is preferred that each butting section is equipped with multiple through-holes, and butting section is connect with round plate
Position can be equipped with arc-shaped slot, wherein each butting section includes the first butting section of a face nozzle carrier 7, and described first supports
Through-hole in relying part can be round, ellipse or other shapes.
Wherein, the axis of the axis and the inner housing of the blade mixing tube is mutually perpendicular to, and the blade mixes
The axis of pipe is overlapped with the axis of the inner housing mounting hole.
Wherein, the axis of the outer housing is overlapped with the axis of the inner housing.
Wherein, the axis of the interstitial hole of the nozzle carrier 7 is overlapped with the axis of the blade mixing tube 12.
Wherein, the inlet chamber and first mixing chamber are the coaxial structure that is nested.
Wherein, the bottom of the blade mixing tube 12 is equipped with the protuberance with radian, to reach the extra urea of discharge, prevents from sinking
Long-pending effect, belongs to the scope of the invention.
Therefore, referring to Figure 11 and 12, it is shown that flowing of the gas between above-mentioned component.
It can be seen that utility model has the advantages that
1, inlet chamber is entered back into after enabling the high-temperature gas to come from upstream to first pass through the inlet chamber to described
One mixing chamber.Lasting heating is carried out to first mixing chamber in this way, upstream bring high-temperature gas just can be efficiently used,
To achieve the purpose that improve the first mixing chamber internal temperature.It does not need additionally to increase heat insulation foam and heat shield, reduce
The cost of engine exhaust post-processing mixing arrangement.Due to the heat of the inlet chamber first mixing chamber is carried out it is lasting
Heating, enhances the evaporation effect of urea droplets in first mixing chamber.
2, the first mixing chamber and the broken of the second mixing chamber enhancing urea droplets, evaporation and pyrolysis.By mixing twice,
Improve the mixed effect of motor exhaust and urea liquid.
3, the design of outlet deflector has the hole for gradually swelling and having radian characteristic.It is designed in this way, is described in order to realize
The mixed gas of the tail gas of urea liquid and engine discharge in first mixing chamber, and it is not in time for the urea solution of evaporation also
After dripping the arcuate socket gradually swelled from the outlet deflector out, the two surrounds the central axis of the outlet deflector together
Line is rotated, and enters second mixing chamber and carry out second of mixing.On identical space, urea droplets are passed through
Second of mixing after rotary motion, increases the incorporation time of urea droplets and motor exhaust.To increase urine again
The evaporation and pyrolysis effect of plain drop.
4, circumferentially direction is provided with guide vane to blade mixing tube, and the water conservancy diversion direction of each circle guide vane with
Neighbouring guide vane is contrary, is designed in this way the crushing effect that urea droplets not only can be enhanced, and can also make to send out
The tail gas and urea droplets of motivation discharge carried out after being come out from the blade mixing tube axis around the blade mixing tube into
Row rotary motion further increases urea droplets to increase the time that urea droplets are mixed with the tail gas of engine emission
Evaporation and pyrolysis.In blade mixing bottom of the tube setting radian, through-hole and diversion trench, the deposition of urea liquid is prevented.
5, the air flap, feature include the features such as its all holes, hole slot and its corresponding position distribution.So
Design the air flap, in order to which the direction for changing the high-temperature gas to come from upstream by force makes its most of gas
The inlet chamber can be can smoothly enter into, ensure that the function that the inlet chamber heats first mixing chamber.In addition, useless
Air-flow changes initial flow regime through inlet chamber outer ring runner.No matter how exhaust gases upstream flow regime dislikes summary, all
It will be circumferentially to enter first mixing chamber along the annular inlet chamber outer surface.This intake method improves the steady of mixer
It is qualitative.The air flap, feature also particularly including are located at the hole of face nozzle direction, shape can be it is round, oval or
Person's other shapes.The purpose of designing the hole is to prevent from air-flow from being formed at the hole back side to be vortexed.If air-flow is at the hole back side
Vortex is formed, then will have a direct impact on airflow direction, eventually leads to gas flowfield distribution and NH3 (ammonia) distributing homogeneity by shadow
It rings.The position of the air flap support and quantity and the size of through-hole, number and shape, can be according to point of upstream airflow
Cloth situation is adjusted, and increases the flexibility of device.
6, outer housing further includes the platform features on outer shell border and to concave.It is designed in this way, is gas in order to prevent
Stream is formed about low flow velocity area in the indent platform features or forms vortex.If forming low flow velocity area or forming whirlpool
Stream, then have very high urea crystals risk in this region.
7, the flow regime of change incoming flow on the one hand can be forced by the way that the inlet chamber is arranged, enters it more stably
First mixing chamber, and upstream bring high-temperature gas heat can be efficiently used, lasting add is carried out to first mixing chamber
Heat enhances the evaporation of urea droplets.On the other hand by the way that first mixing chamber and second mixing chamber is arranged to urea
Drop and the tail gas of engine discharge are sufficiently mixed twice, and by the way that the blade mixing tube, the air flap is arranged
Urea droplets are evaporated with the outlet deflector etc., are pyrolyzed, and rectification and water conservancy diversion are carried out to mixed gas.It is equipped with this
The After-treatment technics exhaust system of invention device, reduces production cost and assembly difficulty, with more stable, efficient conversion
Efficiency and stronger Crystallization.
It is readily apparent that above description and record is only citing rather than in order to limit the disclosure of the utility model
Content, application or use.Although describing and being described in the accompanying drawings embodiment, the utility model in embodiment
Do not limit by attached drawing example and be described as in embodiment it is now recognized that optimal mode to implement the religion of the utility model
The specific examples led, the scope of the utility model will include any implementation for falling into the description and appended claims of front
Example.
Claims (10)
1. a kind of engine exhaust post-processes mixing arrangement, including outer housing, outlet deflector, inner housing, air flap and leaf
Piece mixing tube, it is characterised in that:
The outer housing is hollow cylindrical member, the inner housing be positioned at the intracorporal cylindrical member of the shell, it is described into
Gas baffle closes the air inlet end face of the inner housing and forms multiple gas passages between the outer housing, thus by described
Outer housing, the inner housing and the air flap form inlet chamber, and the blade mixing tube is the cylindrical member of upper opening,
In the inner housing, and the blade mixing tube is equipped with multiple through-holes for being connected to space in inner housing, the conductance out
The periphery of flowing plate is resisted against the space between the inner wall of the outer housing and the closing outer housing and inner housing, the conductance out
Flowing plate is equipped with multiple runners for being connected to space in inner housing, to be mixed by the inner housing, the air flap, the blade
It closes pipe and the outlet deflector forms the first mixing chamber, the second mixing chamber is formed by the outer housing, the outlet deflector.
2. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: the outlet deflector includes
Discoid flow guide plate body, the periphery of the flow guide plate body fit in the inner wall of outer housing, in the flow guide plate body
Portion be equipped with it is multiple include arc in an opening and covering opening arch upward portion to the arc that is connected to inner housing arch upward channel or
Multiple apertures.
3. engine exhaust as claimed in claim 2 post-processes mixing arrangement, it is characterised in that: the flow guide plate body is more
A arc arch upward channel or aperture periphery be additionally provided with multiple circumferentially circumferentially distributed arc-shaped slots and multiple through-holes to
Outlet deflector is enabled to be connected to first mixing chamber and second mixing chamber.
4. engine exhaust as claimed in claim 3 post-processes mixing arrangement, it is characterised in that: arc channel of arching upward is
Four and circumferentially equidistant interval setting or multiple apertures be around outlet water conservancy diversion plate axis be arranged at least one enclose equidistantly set
At least two holes set.
5. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: the blade mixing tube includes
The mixing tube body of upper opening, the tube body periphery of the mixing tube body are equipped with multiple through-holes, and each through-hole, which is equipped with, to be in tilted layout
Guide vane.
6. engine exhaust as claimed in claim 5 post-processes mixing arrangement, it is characterised in that: the multiple through-hole is upper and lower
Spaced multiple rows of through-hole, the through-hole of odd row is all provided with oriented inclined first guide vane in a direction from top to bottom, and
The through-hole of even rows is all provided with inclined second guide vane in another oriented direction from top to bottom.
7. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: the air flap includes envelope
Close the round plate of inner housing air inlet end face, the periphery of the round plate extends radially outward multiple butting sections, it is the multiple against
The ora terminalis in portion is resisted against the inner wall of outer housing.
8. engine exhaust as claimed in claim 7 post-processes mixing arrangement, it is characterised in that: each butting section is equipped with
Multiple through-holes, and the position that butting section is connect with round plate is equipped with arc-shaped slot.
9. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: the axis of the blade mixing tube
The axis of line and the inner housing is mutually perpendicular to, and the axis of the axis of the blade mixing tube and the inner housing mounting hole
It is overlapped.
10. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: the inlet chamber with it is described
First mixing chamber is the coaxial structure that is nested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821969864.4U CN209179849U (en) | 2018-11-28 | 2018-11-28 | Engine exhaust post-processes mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821969864.4U CN209179849U (en) | 2018-11-28 | 2018-11-28 | Engine exhaust post-processes mixing arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN209179849U true CN209179849U (en) | 2019-07-30 |
Family
ID=67374383
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821969864.4U Active CN209179849U (en) | 2018-11-28 | 2018-11-28 | Engine exhaust post-processes mixing arrangement |
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| CN (1) | CN209179849U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042899A (en) * | 2020-02-18 | 2020-04-21 | 无锡亿利环保科技有限公司 | Aftertreatment mixing arrangement with passive valving |
| CN112796861A (en) * | 2019-11-14 | 2021-05-14 | 无锡恒和环保科技有限公司 | An SCR hybrid exhaust device |
| US11136910B2 (en) | 2017-06-06 | 2021-10-05 | Cummins Emission Solutions Inc. | Systems and methods for mixing exhaust gases and reductant in an aftertreatment system |
| GB2595019A (en) * | 2021-02-01 | 2021-11-17 | Cummins Emission Solutions Inc | Systems and methods for mixing exhaust gas and reductant in an exhaust gas aftertreatment system |
| CN114592949A (en) * | 2021-02-11 | 2022-06-07 | 本特勒汽车有限公司 | Exhaust gas treatment device for arrangement in an exhaust system of a motor vehicle |
| US11828214B2 (en) | 2020-05-08 | 2023-11-28 | Cummins Emission Solutions Inc. | Configurable aftertreatment systems including a housing |
| USD1042544S1 (en) | 2022-04-21 | 2024-09-17 | Cummins Emission Solutions Inc. | Aftertreatment system |
| USD1042545S1 (en) | 2022-04-21 | 2024-09-17 | Cummins Emission Solutions Inc. | Aftertreatment system |
| US12123337B2 (en) | 2021-03-18 | 2024-10-22 | Cummins Emission Solutions Inc. | Aftertreatment systems |
| US12173632B2 (en) | 2020-10-22 | 2024-12-24 | Cummins Emission Solutions Inc. | Exhaust gas aftertreatment system |
| US12188842B2 (en) | 2021-08-23 | 2025-01-07 | Cummins Emission Solutions Inc. | Outlet sampling system for aftertreatment system |
| US12264612B2 (en) | 2020-02-27 | 2025-04-01 | Cummins Emission Solutions Inc. | Mixers for use in aftertreatment systems |
| US12281605B2 (en) | 2021-07-27 | 2025-04-22 | Cummins Emision Solutions Inc. | Exhaust gas aftertreatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11982219B2 (en) | 2017-06-06 | 2024-05-14 | Cummins Emission Solutions Inc. | Systems and methods for mixing exhaust gases and reductant in an aftertreatment system |
| US11136910B2 (en) | 2017-06-06 | 2021-10-05 | Cummins Emission Solutions Inc. | Systems and methods for mixing exhaust gases and reductant in an aftertreatment system |
| US11542847B2 (en) | 2017-06-06 | 2023-01-03 | Cummins Emission Solutions Inc. | Systems and methods for mixing exhaust gases and reductant in an aftertreatment system |
| CN112796861A (en) * | 2019-11-14 | 2021-05-14 | 无锡恒和环保科技有限公司 | An SCR hybrid exhaust device |
| US12503969B2 (en) | 2019-12-03 | 2025-12-23 | Cummins Emission Solutions Inc. | Reductant delivery system for exhaust gas aftertreatment system |
| CN111042899A (en) * | 2020-02-18 | 2020-04-21 | 无锡亿利环保科技有限公司 | Aftertreatment mixing arrangement with passive valving |
| US12264612B2 (en) | 2020-02-27 | 2025-04-01 | Cummins Emission Solutions Inc. | Mixers for use in aftertreatment systems |
| US12123334B2 (en) | 2020-05-08 | 2024-10-22 | Cummins Emission Solutions Inc. | Configurable aftertreatment systems including a housing |
| US11828214B2 (en) | 2020-05-08 | 2023-11-28 | Cummins Emission Solutions Inc. | Configurable aftertreatment systems including a housing |
| US12173632B2 (en) | 2020-10-22 | 2024-12-24 | Cummins Emission Solutions Inc. | Exhaust gas aftertreatment system |
| GB2595019A (en) * | 2021-02-01 | 2021-11-17 | Cummins Emission Solutions Inc | Systems and methods for mixing exhaust gas and reductant in an exhaust gas aftertreatment system |
| US12352196B2 (en) | 2021-02-02 | 2025-07-08 | Cummins Emission Solutions Inc. | Exhaust gas aftertreatment system |
| US11566550B2 (en) | 2021-02-11 | 2023-01-31 | Benteler Automobiltechnik Gmbh | Holder for an electric heating element in an exhaust-gas aftertreatment device |
| CN114592949A (en) * | 2021-02-11 | 2022-06-07 | 本特勒汽车有限公司 | Exhaust gas treatment device for arrangement in an exhaust system of a motor vehicle |
| US12123337B2 (en) | 2021-03-18 | 2024-10-22 | Cummins Emission Solutions Inc. | Aftertreatment systems |
| US12281605B2 (en) | 2021-07-27 | 2025-04-22 | Cummins Emision Solutions Inc. | Exhaust gas aftertreatment system |
| US12188842B2 (en) | 2021-08-23 | 2025-01-07 | Cummins Emission Solutions Inc. | Outlet sampling system for aftertreatment system |
| USD1042544S1 (en) | 2022-04-21 | 2024-09-17 | Cummins Emission Solutions Inc. | Aftertreatment system |
| USD1042545S1 (en) | 2022-04-21 | 2024-09-17 | Cummins Emission Solutions Inc. | Aftertreatment system |
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Address after: 201815 area E, 2nd floor, building 3, No. 1180, Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee after: Puheim Automotive Technology (Shanghai) Co.,Ltd. Address before: 201815 area E, 2nd floor, building 3, No. 1180, Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: EBERSPACHER EXHAUST TECHNOLOGY (SHANGHAI) Co.,Ltd. |