CN110023602A - Selective catalytic reduction device mixing arrangement - Google Patents
Selective catalytic reduction device mixing arrangement Download PDFInfo
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- CN110023602A CN110023602A CN201780072698.XA CN201780072698A CN110023602A CN 110023602 A CN110023602 A CN 110023602A CN 201780072698 A CN201780072698 A CN 201780072698A CN 110023602 A CN110023602 A CN 110023602A
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- Prior art keywords
- main body
- catalytic reduction
- selective catalytic
- reduction device
- blade
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Technical problem of the invention is to provide a kind of selective catalytic reduction device mixing arrangement, and decomposition and the evaporation activation of reducing agent drop can be made to improve the reaction of the catalysis in selective catalytic reduction device.Thus, selective catalytic reduction device is to mix the reducing agent and exhaust gas ejected by injector with mixing arrangement in the present invention, and the selective catalytic reduction device mixing arrangement guided to selective catalytic reduction device, comprising: shell, it has the injector, and rear end is connected to the selective catalytic reduction device；And mixer, be set to the shell inside, and be set between the injector and the rear end of the shell, the mixer includes: mixer main body, and outer peripheral surface is supported on the inner peripheral surface of the shell, and be in and with hollow portion cylindrical shape；Central axis is set to the center of the hollow portion of the mixer main body, and the central axis being arranged longlyer along the length direction of the mixer main body；And three or more blades, the inner peripheral surface of the mixer main body and the outer peripheral surface of the central axis are connected, when from the length direction of the mixer main body, each blade is overlapped.
Description
Technical field
The present invention relates to a kind of selective catalytic reduction device mixing arrangements.
Background technique
Being typically chosen property is catalyzed reductor (SCR:Selective Catalytic Reduction-catalysator)
Be will use catalytic reducer when generate nitrogen oxides (such as: NO, NO2 etc. be referred to as NOx, for cause acid rain, photochemical fog etc.
The harmful substance of problem) before being discharged into air (exhaust back segment) be converted to the innocuous substances such as nitrogen (N2) or water (H2O)
Device.
Selective catalytic reduction device is applied especially in diesel car, so that the direction spray flowed by injector to exhaust gas
The reducing agent of injection hydrolyzes ammonification (NH3) because of the heat of exhaust gas, and is reacted with the catalysis of nitrogen oxides and ammonia in exhaust gas by nitrogen
Oxide is converted to nitrogen (N2) and water (H2O).In addition, in order to which the reducing agent ejected in injector is introduced to selective catalysis
It can be mixed in a period of reductor, mixing arrangement is set to before selective catalytic reduction device.
Fig. 1 is the cross-sectional view of previous selective catalytic reduction device mixing arrangement, and Fig. 2 is the selective catalytic reduction of Fig. 1
The perspective view of mixer in device mixing arrangement.
Previous mixing arrangement 30 disclosed in Ebrean Registered Patent the 10-1416478th is as depicted in figs. 1 and 2 comprising
Outer peripheral surface with multiple through holes 340 and be formed as cylindrical tube conduit 34 and set on conduit 34 rear end and have it is multiple
The mixer 35 of blade 351.Thus, it is sprayed from the reducing agent that injector 32 ejects towards conduit 34, mixes, pass through with exhaust gas
The inside of conduit 34 is moved to mixer 35, and each blade 351 of reducing agent and mixer 35 bumps against later, thus further with it is useless
Gas mixing, is distributed to selective catalytic reduction device.
However, there are the following problems for previous mixing arrangement 30.
As shown in Fig. 2, be between each blade 351 of mixer 35 on the basis of the circumferencial direction of mixer 35 in sunder,
It both had been that in sunder, therefore there are partial reduction agent from each leaf between each blade 351 when mixer 35 from its length direction
The problem of gap between piece 351 directly passes through.Finally, it will lead to the decomposition (break up) of reducing agent drop (droplet)
It can not be normally carried out to fail to be successfully generated urging in the selective catalytic reduction device of ammonia etc. with evaporation (evaporation)
Change the problem of reaction reduces.
Further more, as shown in Figure 1, length direction of the injector 32 perpendicular to mixing arrangement 30, the space utilization of other component
Rate can be reduced due to being vertically exposed to 32 part of injector outside mixing arrangement.
Summary of the invention
Technical problem
Technical problem of the invention is to provide a kind of selective catalytic reduction device mixing arrangement, can make reducing agent liquid
The decomposition and evaporation of drop activate, to improve the reaction of the catalysis in selective catalytic reduction device.
Other technologies problem of the invention is to provide a kind of selective catalytic reduction device mixing arrangement, can be minimized
The deformation because of caused by the pressure change (pulsation) of exhaust gas.
Another technical problem of the invention is to provide one kind in selective catalytic reduction device mixing arrangement, can change
The space utilization rate of other component around kind mixing arrangement.
Technical solution
In order to achieve the above objectives, the selective catalytic reduction device mixing arrangement of the embodiment of the present invention passes through for mixing
The reducing agent that injector ejects is guided with exhaust gas and to selective catalytic reduction device comprising: shell has the injection
Device, and rear end is connected to the selective catalytic reduction device；And mixer, it is set to the inside of the shell, and be set to institute
It states between injector and the rear end of the shell, the mixer includes: mixer main body, and outer peripheral surface is supported on described
The inner peripheral surface of shell, in the cylindrical shape with hollow portion；Central axis is set to the hollow portion of the mixer main body
Center, and be arranged longlyer along the length direction of the mixer main body；And three or more blades, described in connection
The outer peripheral surface of the inner peripheral surface of mixer main body and the central axis, it is each when from the length direction of the mixer main body
The blade is overlapped.
Each blade may include: radial direction front end, extend from the front end of the central axis to radial direction,
It is set to the inner peripheral surface of the front end of the mixer main body, and is parallel to the front end of the mixer main body；After radial direction
End extends from the center shaft rear end to radial direction, is set to the inner peripheral surface of the rear end of the mixer main body, and parallel
In the rear end of the mixer main body, and it is located relative to the position that the radial direction front end has rotated first angle；And
Center vane body, connects the radial direction front end and the radial direction rear end, and from the front end of the central axis to rear
End is gradually curved, and generally forms curved surface.
Described three or more blades may include: the first blade, the second blade, third blade, from above-mentioned mixer master
When the length direction observation of body, the radial direction rear end of first blade can be weighed by the center vane body of the second blade
Folded, the radial direction rear end of second blade can be overlapped by the center vane body of third blade, and the third blade
Radial direction rear end can be overlapped by the center vane body of first blade.
The first angle can make 135 degree.
Can have fixed lobe in the outer peripheral surface of the mixer main body.
By casting, the mixer main body, the central axis, each blade and the fixed lobe can lead to
It crosses casting and forms a main body.
The shell can have stage portion, can have the injector in the stage portion, which is arranged to tilt
In the length direction of the mixer main body.
The effect of invention
As described above, selective catalytic reduction device mixing arrangement according to an embodiment of the present invention can have following effect
Fruit.
According to an embodiment of the invention, mixer includes mixing since the technological maheup of offer includes shell and mixer
The blade of device main body and central axis and three or more, and each blade is mutual when from the length direction of mixer main body
Overlapping, therefore a part flowed into from the length direction of mixer will not own directly from passing through between each blade
Reducing agent can just be passed through after all bumping against with each blade, so that the decomposition of reducing agent drop be enable actively to carry out with evaporation
Go down.Finally, it decomposes and evaporates by these, reacted with exhaust gas generation, can actively generate ammonia, promote selective catalysis
The catalysis of reductor is reacted.
In addition, according to an embodiment of the invention, due to the invention provides mixer main body, central axis, each blade with
And fixed lobe forms the technological maheup of a main body by casting, there is no the other engaging portion for bearing load, structures
Stablize, the deformation due to pressure change (pulsation) generation of exhaust gas can be reduced to the full extent.
In addition, according to an embodiment of the invention, the technological maheup that the invention provides is that shell has stage portion, stage portion tool
Standby injector, and the length direction of mixer main body is favoured, therefore injector will not occupy in large quantities for a change
Space around mixing arrangement can improve the space utilization rate of other component.
Detailed description of the invention
Fig. 1 is the cross-sectional view of previous selective catalytic reduction device mixing arrangement.
Fig. 2 is the perspective view of mixer in the selective catalytic reduction device mixing arrangement of Fig. 1.
The selective catalytic reduction device that Fig. 3 outlined one embodiment of the invention is mounted on diesel car with mixing arrangement
Exhaust system (exhaust system) state.
Fig. 4 is that the partial sectional that a part of the selective catalytic reduction device mixing arrangement in cut away view 3 indicates is three-dimensional
Figure.
Fig. 5 is the perspective view of the mixer in the selective catalytic reduction device mixing arrangement for outlined Fig. 4.
Fig. 6 is the perspective view of the central axis and each blade in the mixer for outlined Fig. 5.
Fig. 7 is from the figure of the mixer from its length direction in Fig. 5.
Fig. 8 is (b), it is mixed from the selective catalytic reduction device use in Fig. 3 (c) successively to show reducing agent and exhaust gas by (a)
Attach together the figure for the case where setting choice of flow direction catalysis reductor.
Specific embodiment
The embodiment of the present invention is described in detail with reference to the accompanying drawings, so as to one in the technical field of the invention
As technical staff be easy implement.However the present invention may be implemented as a variety of different forms, however it is not limited to reality described herein as
Apply example.
The selective catalytic reduction device that Fig. 3 outlined one embodiment of the invention is mounted on diesel oil vapour with mixing arrangement
The state of vehicle exhaust system (exhaust system), Fig. 4 are the selective catalytic reduction device mixing arrangements in cut away view 3
The partial sectional perspective view that a part indicates.Fig. 5 is in the selective catalytic reduction device mixing arrangement for outlined Fig. 4
The perspective view of mixer, Fig. 6 are the perspective views of the central axis and each blade in the mixer for outlined Fig. 5, Fig. 7 be from
Its length direction observes the figure of the mixer in Fig. 5.Fig. 8 is (b), (c) successively to show reducing agent and exhaust gas from Fig. 3 by (a)
In selective catalytic reduction device with mixing arrangement choice of flow direction be catalyzed reductor the case where figure.
Selective catalytic reduction device mixing arrangement 100 according to an embodiment of the invention is as shown in Figures 3 to 8 mixed
Close the reducing agent and exhaust gas ejected by injector 10, and the selective catalytic reduction guided to selective catalytic reduction device 3
Device mixing arrangement comprising shell 110 and mixer 120.It continues with and each component is described in detail referring to Fig. 3 to Fig. 8.
Shell 110 is to be set to exhaust aftertreatment device 2 (DPF:Diesel Particulate Filter) in exhaust system
Composition between selective catalytic reduction device 3 (SCR:Selective Catalytic Reduction-catalysator)
Element.Specifically, the flow direction of exhaust gas is subject to, as shown in figure 3, the front end of shell 110 can be filled with exhaust after-treatment
2 connections are set, the rear end of shell 110 can be connected to selective catalytic reduction device 3.Such shell 110 is as shown in Figure 3 and Figure 4,
It can be tubulose, and injector 10 and mixer 120 can be installed.
In turn, as shown in Figure 3 and Figure 4, shell 110 can have stage portion 111, which can favour mixing
Has injector 10 to the length direction of device main body 121.Therefore the technology different from the past of injector 10 is not take up a large amount of mixed
The space set around 100 is attached together, the space utilization rate of other parts can be improved.
Mixer 120 is the reducing agent in order to make to eject by the exhaust gas of exhaust aftertreatment device 2 and from injector 10
Reactivity between (such as urea), at the same for make in reaction the substance (such as ammonia) that generates can selective catalysis also
The entrance side end face of prototype 3 is integrally evenly distributed the constituent element being arranged (referring to Fig. 8).Such mixer 120 such as Fig. 3
With shown in Fig. 4, it can be set to inside shell 110 and be set between injector 10 and the rear end of shell 110.
Specifically, as shown in figs. 4 and 7, mixer 120 may include mixer main body 121, central axis 122 and three
A above blade B.Mixer main body 121 is the cylindrical shape with hollow portion, and outer peripheral surface is supported on the inner circumferential of shell 110
Face, central axis 122 can be set to the center of the hollow portion of mixer main body 121, and along the length direction of mixer main body 121
It is arranged longlyer, and three or more blade B can connect the inner peripheral surface of mixer main body 121 and the outer peripheral surface of central axis 122.
In particular, as shown in fig. 7, [both towards from the front end of central axis 122 when from the length direction of mixer main body 121
When], each blade B can be overlapped.It therefore will not be direct from a part of reducing agent that the length direction of mixer 12 flows into
Pass through between each blade B, but can just be passed through after all reducing agents bump against with each blade B, to make reducing agent
The decomposition of drop can be carried out actively with evaporation.Finally, the decomposition and evaporation of sample are generated with exhaust gas and are reacted in this way, can be with
Ammonia is actively generated, the catalysis reaction of selective catalytic reduction device is promoted.
In addition, each blade B may include radial direction front end 123a, radial direction rear end as shown in Fig. 5 and Fig. 7
123b and center vane body 123c.Radial direction front end 123a can extend from the front end of central axis 122 to its radial direction,
Inner peripheral surface set on the front end of mixer main body 121, and it is parallel to the front end of mixer main body 121.Radial direction rear end 123b
It can extend from the rear end of central axis 122 to its radial direction, the inner peripheral surface set on the rear end of mixer main body 121, and parallel
In the rear end of mixer main body 121, and can be set in the position for having rotated first angle θ relative to radial direction front end 123a
It sets.Center vane body 123c can connect radial direction front end 123a and radial direction rear end 123b, and before central axis 122
It holds to rear end and is gradually curved, generally form curved surface.Therefore reducing agent can with center vane body 123c bump against while with
Exhaust gas is moved along the curved surface of center vane body 123c together, is actively reacted to each other, and then makes the ammonia generated in reaction
Gas circles round along the curved surface of center vane body 123c, is distributed as uniformly as possible in the entrance side of selective catalytic reduction device 3
Face (refers to Fig. 8).
In addition, three or more blade B may include the first blade, the second blade and third blade B1, B2, B3, from mixed
When the length direction observation of clutch main body 121 [when both being observed towards the front end of mixer main body 121], the radius of the first blade B1
Direction rear end 123b can be overlapped by the center vane body 123c of the second blade B2, the radial direction rear end 123b of the second blade B2
It can be overlapped by the center vane body 123c in third blade B3, and the radial direction rear end 123b of third blade B3 can be by first
The center vane body 123c of blade B1 is overlapped.For example, radial direction rear end 123b can be located relative to radial direction front end
123a rotates both 135 degree of the positions first angle θ.
In addition, the outer peripheral surface of mixer main body 121 can have fixed lobe 124.So as to avoid leading because exhaust gas flows
Cause the rotation of mixer main body 121.
In addition, mixer main body 121, central axis 122, each blade B and fixed lobe 124 can be formed by casting
One main body.Therefore there is no the engaging portion in addition bearing load, stable structure can be reduced to the full extent due to useless
The deformation that the pressure change (pulsation) of gas generates.
The desirable embodiment of the present invention has been described in detail above, however interest field of the invention is not limited only to this, ability
Field technique personnel pass through the various modifications that carry out using basic conception of the invention defined in claims and improvement shape
State also belongs within interest field of the invention.
A possibility that being utilized in industry
The present invention relates to a kind of selective catalytic reduction device mixing arrangements, can be applied to diesel car etc., have production
A possibility that being utilized in industry.
Claims (7)
1. a kind of selective catalytic reduction device mixing arrangement is used to mix the reducing agent and exhaust gas ejected by injector
And guided to selective catalytic reduction device, the selective catalytic reduction device mixing arrangement is characterized in that,
Include:
Shell, has the injector, and rear end is connected to the selective catalytic reduction device；And
Mixer is set to the inside of the shell, and is set between the injector and the rear end of the shell,
The mixer includes:
Mixer main body, outer peripheral surface are supported on the inner peripheral surface of the shell, in the cylindrical shape with hollow portion；
Central axis is set to the center of the hollow portion of the mixer main body, and along the length of the mixer main body
Degree direction is arranged longlyer；And
Three or more blades connect the inner peripheral surface of the mixer main body and the outer peripheral surface of the central axis,
Each blade is overlapped when from the length direction of the mixer main body.
2. selective catalytic reduction device mixing arrangement according to claim 1, which is characterized in that
Each blade includes:
Radial direction front end extends from the front end of the central axis to radial direction, before being set to the mixer main body
The inner peripheral surface at end, and it is parallel to the front end of the mixer main body；
Radial direction rear end extends from the rear end of the central axis to radial direction, after being set to the mixer main body
The inner peripheral surface at end, and it is parallel to the rear end of the mixer main body, and be located relative to the radial direction front end rotation first
The position of angle；And
Center vane body, connects the radial direction front end and the radial direction rear end, and from the front end of the central axis
It is gradually curved to rear end, generally forms curved surface.
3. selective catalytic reduction device mixing arrangement according to claim 2, which is characterized in that
Described three or more blades include: the first blade, the second blade and third blade,
When from the length direction of the mixer main body,
The radial direction rear end of first blade is overlapped by the center vane body of the second blade,
The radial direction rear end of second blade is overlapped by the center vane body of third blade, and
The radial direction rear end of the third blade is overlapped by the center vane body of first blade.
4. selective catalytic reduction device mixing arrangement according to claim 3, which is characterized in that
The first angle is 135 degree.
5. selective catalytic reduction device mixing arrangement according to claim 1, which is characterized in that
Has fixed lobe in the outer peripheral surface of the mixer main body.
6. selective catalytic reduction device mixing arrangement according to claim 5, which is characterized in that
The mixer main body, the central axis, each blade and the fixed lobe form a master by casting
Body.
7. selective catalytic reduction device mixing arrangement according to claim 1, which is characterized in that
The shell has stage portion,
Has the injector in the stage portion, which is configured obliquely relative to the length direction of the mixer main body.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2016-0160252 | 2016-11-29 | ||
| KR1020160160252A KR101898235B1 (en) | 2016-11-29 | 2016-11-29 | Mixing apparatus for selective catalytic reduction-catalysator |
| PCT/KR2017/013476 WO2018101678A1 (en) | 2016-11-29 | 2017-11-24 | Mixing device for selective catalytic reduction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110023602A true CN110023602A (en) | 2019-07-16 |
Family
ID=62241527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780072698.XA Pending CN110023602A (en) | 2016-11-29 | 2017-11-24 | Selective catalytic reduction device mixing arrangement |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101898235B1 (en) |
| CN (1) | CN110023602A (en) |
| WO (1) | WO2018101678A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523843A (en) * | 2020-11-17 | 2021-03-19 | 江苏大学 | Control device and method for actively regulating and controlling working environment of diesel engine SDPF system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102195085B1 (en) * | 2019-02-12 | 2020-12-24 | 포레시아코리아 유한회사 | Mixer for exhaust system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372929A (en) * | 2007-08-24 | 2009-02-25 | 丰田纺织株式会社 | Swirl generator |
| JP2011111927A (en) * | 2009-11-25 | 2011-06-09 | Honda Motor Co Ltd | Exhaust emission control device of internal combustion engine |
| CN103764266A (en) * | 2011-08-24 | 2014-04-30 | 波森公司 | Mixer device |
| US20160032809A1 (en) * | 2014-07-31 | 2016-02-04 | Eberspächer Exhaust Technology GmbH & Co. KG | Mixer and mixing device for an exhaust system |
| US20160312679A1 (en) * | 2015-04-23 | 2016-10-27 | Nelson Global Products, Inc. | Engine Exhaust System Decomposition Tube |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR980008504U (en) * | 1996-07-19 | 1998-04-30 | 박한문 | Exhaust System of Internal Combustion Engine |
| DE102007019878A1 (en) * | 2007-04-25 | 2008-11-06 | J. Eberspächer GmbH & Co. KG | Mixing and / or evaporating device and associated production method |
| KR20120130603A (en) * | 2011-05-23 | 2012-12-03 | 세종공업 주식회사 | Apparatus for mixing reducing agent of scr system |
| KR101416478B1 (en) | 2012-08-17 | 2014-07-09 | 세종공업 주식회사 | Mixing module for post treatment exhaust contamination gas decreasing system in diesel engine |
| JP6306306B2 (en) * | 2013-09-12 | 2018-04-04 | フタバ産業株式会社 | Diffusion plate and manufacturing method thereof |
| CN106460621B (en) * | 2014-05-30 | 2019-02-01 | 双叶产业株式会社 | It is vented agitating device |
-
2016
- 2016-11-29 KR KR1020160160252A patent/KR101898235B1/en active IP Right Grant
-
2017
- 2017-11-24 WO PCT/KR2017/013476 patent/WO2018101678A1/en active Application Filing
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372929A (en) * | 2007-08-24 | 2009-02-25 | 丰田纺织株式会社 | Swirl generator |
| JP2011111927A (en) * | 2009-11-25 | 2011-06-09 | Honda Motor Co Ltd | Exhaust emission control device of internal combustion engine |
| CN103764266A (en) * | 2011-08-24 | 2014-04-30 | 波森公司 | Mixer device |
| US20160032809A1 (en) * | 2014-07-31 | 2016-02-04 | Eberspächer Exhaust Technology GmbH & Co. KG | Mixer and mixing device for an exhaust system |
| US20160312679A1 (en) * | 2015-04-23 | 2016-10-27 | Nelson Global Products, Inc. | Engine Exhaust System Decomposition Tube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523843A (en) * | 2020-11-17 | 2021-03-19 | 江苏大学 | Control device and method for actively regulating and controlling working environment of diesel engine SDPF system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20180060587A (en) | 2018-06-07 |
| KR101898235B1 (en) | 2018-09-12 |
| WO2018101678A1 (en) | 2018-06-07 |
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