CN108286466A - A kind of ceramic honeycomb filter of high thermal shock stability - Google Patents
A kind of ceramic honeycomb filter of high thermal shock stability Download PDFInfo
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- CN108286466A CN108286466A CN201711451086.XA CN201711451086A CN108286466A CN 108286466 A CN108286466 A CN 108286466A CN 201711451086 A CN201711451086 A CN 201711451086A CN 108286466 A CN108286466 A CN 108286466A
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- Prior art keywords
- outlet
- exit passageway
- thermal shock
- import
- honeycomb filter
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention relates to ceramic honeycomb filter fields, disclose a kind of ceramic honeycomb filter of high thermal shock stability, including：Import ceramic honey comb face and outlet ceramic honey comb face, import ceramic honey comb face is equipped with intake channel, it exports ceramic honey comb face and is equipped with exit passageway, intake channel is connected to exit passageway, the outlet end of intake channel and the input end of exit passageway block, the cross section of exit passageway is square, and equipped with outlet chamfering or outlet fillet.A kind of ceramic honeycomb filter of high thermal shock stability provided by the invention, by the structure design for changing exit passageway angle, the thermal stress generated in regenerative process can be reduced, in the case where not influencing other performance, ceramic honeycomb filter there can be superior thermal shock resistance.
Description
Technical field
The present invention relates to ceramic honeycomb filter fields, more particularly to a kind of honeycomb ceramic filter of high thermal shock stability
Device.
Background technology
Ceramic honey comb wall-flow filter can remove the carbon black in gasoline engine and diesel engine vent gas.Filtering traditional at present
Device designs, it has import ceramic honey comb face and outlet ceramic honey comb face as inlet and outlet, and will import and export separate it is more
Hole wall.Filter is divided into intake channel (referred to as by these walls being connected with each other：I) and exit passageway (referred to as：O).To capture
The outlet end of carbon black and ash, intake channel is blocked, and the import of exit passageway is blocked.It is such be spaced the structure that is blocked as
The chessboard of chess.This design can force tail gas to pass through from porous wall so that particulate matter is deposited in channel or on wall.
In general, inlet and outlet channel has the square section of same area.When amount of carbon blacks reaches a certain level, regenerative process occurs, meeting
These carbon blacks of burning-off.
In practical applications, the thermal stress generated in regenerative process can cause filter prodigious problem.Work as thermal stress
When very big, it can cause filter to crack, to meet the needs of environmentally friendly.A solution be when carbon carries few again
It is raw, but this can cause the oil consumption of vehicle to increase.Therefore, the method for reducing thermal stress is preferably by filter material and design
It improves.
Currently, in the region (between 20 to 70 degree) of selection, intake channel and exit passageway diagonal line are vertical or close vertical
Outlet chamfering directly is made in the angle of skin, to play the effect for reinforcing anti-thermal shock intensity.Although the thermal stress in this region can
To reduce, but the thermal stress in other region does not reduce.In addition, the region selected herein, not all is diagonal all in height
Under thermal stress.So some outlet chamferings are excessively to devise, increasing for filter backpressure can be caused.
Therefore, it is necessary to make the region of high thermal stress clear, and in the case where not influencing other performances, how honeycomb is improved
The structure of ceramic filter, increasing its thermal shock resistance becomes urgent problem to be solved.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of ceramic honeycomb filters of high thermal shock stability, solve honeycomb in the prior art
Ceramic filter thermal shock resistance is low and the high problem of back pressure.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of ceramic honeycomb filters of high thermal shock stability, special
Sign is, including：Import ceramic honey comb face and outlet ceramic honey comb face, import ceramic honey comb face and outlet honeycomb pottery
Porcelain facing is equipped with intake channel and is equipped with exit passageway, and the intake channel is connected to the exit passageway, the intake channel
Outlet end and the input end of the exit passageway block, the cross section of the exit passageway is square, and is fallen equipped with outlet
Angle or outlet fillet.
Wherein, when the cross section of the exit passageway is square, and is equipped with outlet fillet, the half of the outlet fillet
Diameter is more than 0.2 times of the wall thickness between the intake channel and the exit passageway, and is less than 0.35mm.
Wherein, described to export the oblique of chamfering when the cross section of the exit passageway is square, and is equipped with outlet chamfering
The 5%-30% of the length of side of the ranging from described exit passageway of edge lengths.
Wherein, the cross section of the intake channel is square.
Wherein, the intake channel is additionally provided with import fillet.
Wherein, the radius of the import fillet is less than 0.125mm.
Wherein, the radius of the import fillet is less than the radius of the outlet fillet.
(3) advantageous effect
The ceramic honeycomb filter of a kind of high thermal shock stability provided by the invention, by the structure for changing exit passageway angle
Design, can reduce the thermal stress generated in regenerative process, in the case where not influencing other performance, ceramic honeycomb filter can
With superior thermal shock resistance.
Description of the drawings
Fig. 1 is the import ceramic honey comb face structure chart of the embodiment of the present invention 1；
Fig. 2 is I detail view of Fig. 1 import ceramic honey combs face；
Fig. 3 is II detail view of Fig. 2 exit passageways；
Fig. 4 is the import ceramic honey comb face structure chart of the embodiment of the present invention 2；
Fig. 5 is I detail view of Fig. 4 import ceramic honey combs face；
Fig. 6 is II detail view of Fig. 5 exit passageways；
Fig. 7 is the import ceramic honey comb face structure chart of the embodiment of the present invention 3；
Fig. 8 is I detail view of Fig. 7 import ceramic honey combs face；
Fig. 9 is II detail view of Fig. 8 exit passageways；
Figure 10 is the import ceramic honey comb face structure chart of the embodiment of the present invention 4；
Figure 11 is I detail view of Figure 10 import ceramic honey combs face；
Figure 12 is II detail view of Figure 11 exit passageways.
In figure, 1, intake channel；2, exit passageway；3, import fillet；4, fillet is exported；5, chamfering is exported.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Fig. 1-Figure 12, import ceramic honey comb face and outlet ceramic honey comb face, import ceramic honey comb face and institute
Outlet ceramic honey comb face to be stated to be equipped with intake channel and be equipped with exit passageway, the intake channel is connected to the exit passageway,
The input end of the outlet end of the intake channel and the exit passageway blocks, and the cross section of the exit passageway is square,
And equipped with outlet chamfering or outlet fillet.
Specifically, it can be round, oval or other shapes that this filter, which has skin (i.e. lateral wall), this filter,.It crosses
The composition of filter is the inlet and outlet channel that the porous wall of a series of interconnection is constituted.Inlet and outlet channel is always
Extend to the both ends of entire filter.This filter is formed by expressing technique.In general, the material of this filter is ceramic material
Material, such as cordierite, silicon carbide, aluminium titanates and mullite etc., but other extrudable materials are can also be, and such as glass, glass pottery
Porcelain, plastics and metal.
Ceramic honeycomb filter has intake channel, and tail gas is allowed to enter；Also there is exit passageway, tail gas is allowed to flow out.To import
For channel, outlet end is blocked, and input end does not block up；For exit passageway, input end is blocked, and outlet end is not
It is stifled.Inlet and outlet channel is separated by wall.In general, the porosity of filter is between 20% to 70%.To gasoline engine and
Diesel exhaust filtration device, stomata average-size is between 5 to 50 microns, between preferably 10 to 30 microns.Ceramic honeycomb filter is every
Square inch has 50 to 350 grid, preferably 100 to 300 grid.Wall thickness can from 0.05 to 0.5 millimeter, preferably 0.1 to 0.4
Millimeter.
To improve the anti-thermal shock intensity of exit passageway, the angle of exit passageway is designed.About intake channel, because
In the temperature jump of regenerative process, they are under compression, so It is not necessary to carrying out thermodynamics reinforcement.To keep the low back of the body
Pressure is preferably maintained in square shape or only carries out small round corner processing.
Embodiment 1：
As shown in Figure 1-Figure 3, the cross section of intake channel is square, and does not set fillet.The cross section of exit passageway is just
It is rectangular, and equipped with outlet fillet, and the radius for exporting fillet is more than the wall thickness between the intake channel and the exit passageway
0.2 times, and be less than 0.35mm.
Embodiment 2：
As shown in Figure 4-Figure 6, the cross section of intake channel is square, and does not set fillet.The cross section of exit passageway is just
It is rectangular, and equipped with outlet chamfering, export the 5%-30% of the length of side of the ranging from described exit passageway of the length of the hypotenuse of chamfering.
Embodiment 3：
As shown in figs. 7 to 9, the cross section of intake channel is square, and is equipped with import fillet.Exit passageway it is transversal
Face is square, and equipped with outlet fillet, and the radius for exporting fillet is more than between the intake channel and the exit passageway
0.2 times of wall thickness, and be less than 0.35mm.
Embodiment 4：
As shown in Figure 10-Figure 12, the cross section of intake channel is square, and is equipped with import fillet.The cross of exit passageway
Section is square, and equipped with outlet chamfering, exports the 5%- of the length of side of the ranging from described exit passageway of the length of the hypotenuse of chamfering
30%.
Embodiment 5：
The present embodiment is substantially the same manner as Example 3, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 3 is described, only illustrates the present embodiment difference from Example 3：Wherein, the half of import fillet
Diameter is less than 0.125mm.
Embodiment 6：
The present embodiment is substantially the same manner as Example 4, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 4 is described, only illustrates the present embodiment difference from Example 4：Wherein, the half of import fillet
Diameter is less than 0.125mm.
Embodiment 7：
The present embodiment is substantially the same manner as Example 5, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 5 is described, only illustrates the present embodiment difference from Example 5：Wherein, the import fillet
Radius be less than it is described outlet fillet radius.
Embodiment 8：
The present embodiment is substantially the same manner as Example 6, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 6 is described, only illustrates the present embodiment difference from Example 6：Wherein, the import fillet
Radius be less than it is described outlet fillet radius.
It forms or is realized using grinding tool polishing specifically, the fillet of above example is electrical discharge machining.
It is tested according to above-described embodiment, detects the maximum thermal stress of this filter, if inlet and outlet is
Square, and corners and fillets is not set as the comparative example of the prior art；Exit passageway is equipped with fillet, and radius of corner is 0.25mm
For the embodiment of the present invention 1；Exit passageway is equipped with chamfering, and it is of the embodiment of the present invention that the length of the hypotenuse of chamfering, which is 0.25mm,
2.It is Experimental comparison below：
It can be seen that with calculating, by changing the design at exit passageway angle, can reduce in regenerative process from the explanation above
The thermal stress of generation.Therefore, in the case where not influencing other performance, ceramic honeycomb filter can have superior anti-thermal shock
Performance.
The ceramic honeycomb filter of a kind of high thermal shock stability provided by the invention, by the structure for changing exit passageway angle
Design, can reduce the thermal stress generated in regenerative process, in the case where not influencing other performance, ceramic honeycomb filter can
With superior thermal shock resistance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (7)
1. a kind of ceramic honeycomb filter of high thermal shock stability, which is characterized in that including：Import ceramic honey comb face and outlet bee
Nest ceramic plane, import ceramic honey comb face and the outlet ceramic honey comb face are equipped with intake channel and are equipped with exit passageway,
The intake channel is connected to the exit passageway, the import end seal of the outlet end of the intake channel and the exit passageway
Stifled, the cross section of the exit passageway is square, and equipped with outlet chamfering or outlet fillet.
2. the ceramic honeycomb filter of high thermal shock stability as described in claim 1, which is characterized in that when the exit passageway
Cross section be square, and equipped with outlet fillet when, it is described outlet fillet radius be more than the intake channel with it is described go out
0.2 times of wall thickness between mouthful channel, and it is less than 0.35mm.
3. the ceramic honeycomb filter of high thermal shock stability as described in claim 1, which is characterized in that when the exit passageway
Cross section be square, and when equipped with outlet chamfering, the length of the hypotenuse ranging from described exit passageway of the outlet chamfering
The 5%-30% of the length of side.
4. the ceramic honeycomb filter of high thermal shock stability as claimed in claim 2 or claim 3, which is characterized in that the import is logical
The cross section in road is square.
5. the ceramic honeycomb filter of high thermal shock stability as claimed in claim 4, which is characterized in that the intake channel is also
Equipped with import fillet.
6. the ceramic honeycomb filter of high thermal shock stability as claimed in claim 5, which is characterized in that the import fillet
Radius is less than 0.125mm.
7. the ceramic honeycomb filter of high thermal shock stability as claimed in claim 6, which is characterized in that the import fillet
Radius is less than the radius of the outlet fillet.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451086.XA CN108286466A (en) | 2017-12-27 | 2017-12-27 | A kind of ceramic honeycomb filter of high thermal shock stability |
| CN201811375065.9A CN109630236A (en) | 2017-12-27 | 2018-11-19 | A kind of ceramic honeycomb filter of high thermal shock stability |
| PCT/CN2018/116703 WO2019128560A1 (en) | 2017-12-27 | 2018-11-21 | Honeycomb ceramic filter having high thermal shock resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451086.XA CN108286466A (en) | 2017-12-27 | 2017-12-27 | A kind of ceramic honeycomb filter of high thermal shock stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108286466A true CN108286466A (en) | 2018-07-17 |
Family
ID=62832469
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711451086.XA Pending CN108286466A (en) | 2017-12-27 | 2017-12-27 | A kind of ceramic honeycomb filter of high thermal shock stability |
| CN201811375065.9A Pending CN109630236A (en) | 2017-12-27 | 2018-11-19 | A kind of ceramic honeycomb filter of high thermal shock stability |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811375065.9A Pending CN109630236A (en) | 2017-12-27 | 2018-11-19 | A kind of ceramic honeycomb filter of high thermal shock stability |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN108286466A (en) |
| WO (1) | WO2019128560A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128560A1 (en) * | 2017-12-27 | 2019-07-04 | 山东国瓷功能材料股份有限公司 | Honeycomb ceramic filter having high thermal shock resistance |
| CN110107379A (en) * | 2019-06-10 | 2019-08-09 | 常州浩蔚环保科技有限公司 | A kind of asymmetric chamfering structure of ceramic honey comb particle trap |
| CN110173328A (en) * | 2019-06-18 | 2019-08-27 | 常州浩蔚环保科技有限公司 | A kind of edge chamfer structure of ceramic honey comb particle trap |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4417908A (en) * | 1982-02-22 | 1983-11-29 | Corning Glass Works | Honeycomb filter and method of making it |
| CN1322909C (en) * | 2002-09-13 | 2007-06-27 | 揖斐电株式会社 | Honeycomb structure |
| US7393377B2 (en) * | 2004-02-26 | 2008-07-01 | Ngk Insulators, Ltd. | Honeycomb filter and exhaust gas treatment apparatus |
| WO2013186922A1 (en) * | 2012-06-15 | 2013-12-19 | イビデン株式会社 | Honeycomb filter |
| WO2014054159A1 (en) * | 2012-10-04 | 2014-04-10 | イビデン株式会社 | Honeycomb filter |
| JP6239303B2 (en) * | 2013-07-31 | 2017-11-29 | イビデン株式会社 | Honeycomb filter |
| CN106076625B (en) * | 2016-08-11 | 2017-06-16 | 天津大学 | A kind of micro- electrostatic filter of cylindrical shape |
| CN106179751B (en) * | 2016-08-31 | 2018-01-30 | 天津大学 | A kind of plate shaped micro- electrostatic filter |
| CN108286466A (en) * | 2017-12-27 | 2018-07-17 | 山东国瓷功能材料股份有限公司 | A kind of ceramic honeycomb filter of high thermal shock stability |
-
2017
- 2017-12-27 CN CN201711451086.XA patent/CN108286466A/en active Pending
-
2018
- 2018-11-19 CN CN201811375065.9A patent/CN109630236A/en active Pending
- 2018-11-21 WO PCT/CN2018/116703 patent/WO2019128560A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128560A1 (en) * | 2017-12-27 | 2019-07-04 | 山东国瓷功能材料股份有限公司 | Honeycomb ceramic filter having high thermal shock resistance |
| CN110107379A (en) * | 2019-06-10 | 2019-08-09 | 常州浩蔚环保科技有限公司 | A kind of asymmetric chamfering structure of ceramic honey comb particle trap |
| CN110173328A (en) * | 2019-06-18 | 2019-08-27 | 常州浩蔚环保科技有限公司 | A kind of edge chamfer structure of ceramic honey comb particle trap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109630236A (en) | 2019-04-16 |
| WO2019128560A1 (en) | 2019-07-04 |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180717 |
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