CN1990427A - Hexagonal-cell honeycomb structure - Google Patents
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- CN1990427A CN1990427A CN 200610165913 CN200610165913A CN1990427A CN 1990427 A CN1990427 A CN 1990427A CN 200610165913 CN200610165913 CN 200610165913 CN 200610165913 A CN200610165913 A CN 200610165913A CN 1990427 A CN1990427 A CN 1990427A
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Abstract
A hexagonal-cell honeycomb structure having a plurality of cell walls having a hexagonal shape in cross-section and forming a plurality of hexagonal cell passages, and a tubular skin layer surrounding the cell walls, The thickness of the basic cell walls is 140 mum or less and an inscribed circle diameter Da inscribed at an intersectional portion of the basic cell walls 2 and an cell pitch P having the relationship Da/P>=0.13.
Description
Technical field
The hexagonal-cell honeycomb structure that the present invention relates to have high mechanical strength and have thin mesh walls thickness.
Background technology
In the waste gas cleaning system of automobile, the purpose of the ceramic honeycomb structure that uses as support of the catalyst is to activate entrained catalyzer early.Therefore, need ceramic honeycomb structure to have 140 μ m or littler walled thickness, so that reduce thermal capacity by the minimizing of overall weight.
Generally speaking, accept external pressure to a certain extent as the ceramic honeycomb structure of support of the catalyst.Because thin wall thickness has reduced resistance to rupture, what need concern is that the intensity of ceramic honeycomb structure opposing external pressure will reduce.Especially, there is more serious problem in hexagonal-cell honeycomb structure, and promptly the strength ratio triangular mesh of its resistance to rupture or square net reduce manyly.
Description to raising honeycomb structure intensity is known in the prior art.
For example, Japanese patent application No.54-110189 has described a kind of structure, and its grid thickness reduces gradually towards the center.
Another example and for example, Japanese patent application No.10-264125 has described a kind of structure, this structure comprises: contain the first area and the second area that is positioned at the outside, first area at the center of structure, and the reinforcing section that is formed on each place, angle of the grid that is arranged in second area.
Yet in these prior art reference, because the thickness of interior outside mesh walls there are differences, its shrinkage is different in sintering process.
Therefore, it should be noted that the accurate dimension of described structure can not be guaranteed, and the homogeneity of the end surface of described structure can not be guaranteed in extrusion process.
A kind of structure has been described by Japan unexamined patent open source literature No.3466862, described structure comprises regular grid and irregular grid, regular grid has excellent in shape, the cross-sectional area that irregular grid has lacks 80% than the cross-sectional area of regular grid, and only be not orthogonal to outer wall irregular grid thickness greater than the residue grid thickness 9-100%.
Japanese patent application No.11-277653 has described the thickness " tr " of external mesh dividing plate, and the thickness " tc " of basis (basic) dividing plate and the thickness " ts " of outer wall have following relation:
0.7≤tc/tr≤0.9，0.3≤tr/ts≤0.7。
As above-mentioned, description of the Prior Art outside grid thickness greater than interior volume grid thickness.Though these technology can guarantee the physical strength of square net structure, they can not guarantee the physical strength of hexagonal mesh structure.
Japanese patent application No.2002-46117 has described the interior section radius (Rc) of the interior section radius (Rr) of outer wall greater than each mesh walls.
Japanese patent application No.2003-269131 has described a kind of structure with such grid, in each angle that faces with each other in the described grid, has a diagonal angle bigger than another angle curvature of facing.
Though these technology can guarantee the physical strength of square net structure, these can not guarantee the intensity of hexagonal mesh structure.
As above-mentioned, because these technology relate to the square net structure, even these technology are used in the hexagonal mesh structure, the physical strength of hexagonal mesh structure can not improved fully yet.
Summary of the invention
In view of the above problems, an object of the present invention is to provide a kind of improved hexagonal-cell honeycomb structure, it has high physical strength and has 140 μ m or littler walled thickness.
According to an aspect of of the present present invention, a kind of hexagonal-cell honeycomb structure is provided, it has high mechanical strength, and comprises: a plurality of cross sections are hexagonal shape and the mesh walls that forms a plurality of hexagonal mesh passages; Tubulose top layer around described a plurality of mesh walls; And the thickness that forms basis (basic) mesh walls of described hexagonal shape is 140 μ m or littler, and inscribed circle diameter Da that connects in the intersection of described basic grid wall and the pass of mesh spacing P are Da/P 〉=0.13.
Described purpose also can realize by a kind of hexagonal-cell honeycomb structure of following content that comprises is provided: a plurality of cross sections are hexagonal shape and constitute the mesh walls of a plurality of hexagonal mesh passages; Tubulose top layer around described a plurality of mesh walls; And be hexagonal shape and do not comprise that the thickness of the basic grid wall on described tubulose top layer is 140 μ m or littler by six mesh walls structures, the mean value Dax of a circular diameter Da and the pass of mesh spacing P are Dax/P 〉=0.13, and the mutual close hexagonal mesh passage of three of this circle contacts is at the outline of the cross-shaped portion office of three basic grid walls.
Described purpose also can realize by a kind of hexagonal-cell honeycomb structure of following content that comprises is provided: a plurality of cross sections are hexagonal shape and constitute the mesh walls of a plurality of hexagonal mesh passages; Tubulose top layer around described a plurality of mesh walls; The shape that has is similar to the first area S1 of the outer circumferential shape on described tubulose top layer, and this zone comprises the center of honeycomb structure; Be limited to the second area S2 of the outside of described first area; Wherein six mesh walls structures are hexagonal shape and do not comprise that the thickness of the basic grid wall on described tubulose top layer is 140 μ m or littler; When the pass that described first area S1 and described second area S2 have is S2/S1=0.2, constitute in all intersection of second area S2 80% relation that meets Dax/P 〉=0.13, at this moment Dax is restricted to a circular diameter, the mutual close hexagonal mesh passage of three of this circle contacts is at the outline of the cross-shaped portion office of three basic grid walls, and P is restricted to mesh spacing.
As used herein, " hexagonal shape " is not limited to have the perfect hexagonal shape of geometrical shape.The wording meaning of the present invention is the universal of hexagonal shape, does not promptly connect the hexagon that the top layer constitutes by connecting six mesh walls lines.
In other words, the mesh walls of the strictly all rules except the irregular grid wall that contains the top layer is essentially hexagonal shape.
Description of drawings
Other purpose of the present invention, feature and advantage from following with reference to becoming more obvious the circumstantial letter of accompanying drawing, wherein:
Fig. 1 is the skeleton view according to the hexagonal-cell honeycomb structure of first embodiment of the invention;
Fig. 2 is the partial elevation view of the hexagonal-cell honeycomb structure of Fig. 1;
Fig. 3 is the example that limits according to Da of the present invention;
Fig. 4 is the example that limits according to Da of the present invention;
Fig. 5 is the example that limits according to Da of the present invention;
Fig. 6 is the example that limits according to Da of the present invention;
Fig. 7 is the skeleton view according to the hexagonal-cell honeycomb structure of second embodiment of the invention;
Fig. 8 is the figure according to the waste gas purification apparatus of the oil engine of third embodiment of the invention.
The specific embodiment mode
＜embodiment 1 〉
With reference to accompanying drawing, wherein identical among each figure with reference to the identical part of label indication, particularly for Fig. 1, drawn according to the hexagonal-cell honeycomb structure 1 of first embodiment of the invention.
As shown in Figure 1, hexagonal-cell honeycomb structure 1 is the support of the catalyst that is used for system for automobile exhaust gas purification.
Described hexagonal-cell honeycomb structure 1 comprises a plurality of mesh walls 2, and its cross section is hexagonal shape basically and constitutes a plurality of hexagonal mesh passages 3 and around the tubulose top layer 4 of outmost circumference circumference mesh walls 2.
The thickness t of basic grid wall 2a on the cross section that constitutes intact substantially hexagonal shape is 140 μ m or littler.
In addition, as shown in Figure 2, in the cross-shaped portion office that constitutes by three basic grid walls, the profile of the opening c1-c3 of the mutual close hexagonal mesh passage of three of inscribeds, described circular diameter is defined as Da (mm), and mesh spacing is restricted to P (mm).Mean value at the circular diameter Da of all cross-shaped portion offices is restricted to Dax.
By constitute the interior friendship part place that cross section is the outmost mesh walls of irregular hexagonal mesh shape with tubulose top layer 4, perhaps in the cross-shaped portion office of outmost mesh walls and basic grid wall, in connect the opening profile of three grid passages circle be restricted to Cb, the diameter of circle Cb is defined as Db (mm).In all cross-shaped portion offices, the mean value of circular diameter Db is restricted to Dbx.
The table 1 of back shows Dax/P, the value of Dbx/Dax, and the length of each sampling.
In this example, provide the hexagonal-cell honeycomb structure of the mean value Dax with the same substantially inscribed circle diameter Da and described circular diameter Da.
Shown in Fig. 3-6, inscribed circle diameter Da is restricted to the diameter of the round Ca of the profile that contacts each mesh openings part c1-c3 in the cross-shaped portion office of basic grid wall 2a.That is, justify at least three basic grid wall surfaces of Ca contact.Though position in the contact part of justifying Ca and mesh openings part c1-c3, change along with the fine structure residual quantity difference of the angle of intersection or mesh walls thickness, but contact the greatest circle of the profile of grid opening portion c1-c3 by drawing, can calculate diameter Da.
The method of making hexagonal-cell honeycomb structure will be described now.
The stupalith of honeycomb structure is provided.In this embodiment, the quantity of ceramic powder is by the kaolin powder, fused quartz, aluminium-hydroxide powder, aluminium powder form, the quantity of talcum powder and carbon dust is regulated, so being the main component that is called trichroite (cordierite), the final composition of honeycomb structure forms, it comprises the SiO2 that accounts for mass percent 45-55%, accounts for the Al2O3 of mass percent 33-42% and accounts for the MgO of mass percent 12-18%.
Described ceramic powder is mixed with water and binding agent, then these materials are stirred and produce stupalith.
Described stupalith is to extrude by the mould (not drawing) that use has a slit pattern of corresponding mesh walls 2 patterns to form, and forms so described honeycomb structure is molded.
Afterwards, by cutting described molded honeycomb structure, at the 90-100 ℃ of described honeycomb structure of drying, and under about 1400 ℃, fire the technology of described honeycomb structure, thereby obtained hexagonal-cell honeycomb structure 1.
The equilibrium of each hexagonal-cell honeycomb structure (equipressure) intensity is by following program, measures according to car gage (JASO) M505-78 of Japanese car IEEE.
The sample of each ceramic honeycomb structure is prepared by aluminium sheet being installed in its two end surfaces and rubber plate being installed in its external peripheral surface.Each sample is packed in the pressurized vessel, and described container has been filled water and pressurized so that the sample fracture.Pressure during fracture is called as high isostatic strength.
The result who measures each sample is presented in the table 1.Evaluation to described high isostatic strength is defined as follows.
Less than 1.5: defective (*)
More than or equal to 1.5 and less than 2: somewhat defective (△)
More than or equal to 2 and less than 3: qualified (zero)
3 or greater than 3: good (◎)
As shown in table 1, as embodiments of the invention, all sample E1-12 are coincidence formula Dax/P 〉=0.13.Because sample E1-12 has the required high isostatic strength of enough practical applications, it is qualified that these samples can be judged as.More specifically, as sample E3,6,9 and 12 coincidence formula Dax/P 〉=0.16 o'clock, sample E3,6,9 and 12 high isostatic strength is high especially.
On the other hand, as a comparison case, because sample C1-C12 does not meet formula Dax/P 〉=0.13, the high isostatic strength of these samples is not high enough.
Table 1
| ?P(mm) | Mesh walls thickness (μ m) | Dax(m m) | Dbx(m m) | ?Dax/P | ?Dbx/Dax | High isostatic strength (Mpa) | Estimate | ||
| Comparative Examples embodiment | C1 | ?1.35 | ?120 | ?0.16 | ?0.15 | ?0.119 | ?0.94 | ?1.3 | × |
| C2 | ?1.35 | ?120 | ?0.17 | ?0.18 | ?0.126 | ?1.06 | ?1.6 | △ | |
| C3 | ?1.35 | ?120 | ?0.17 | ?0.19 | ?0.126 | ?1.12 | ?1.9 | △ | |
| E1 | ?1.35 | ?120 | ?0.20 | ?0.20 | ?0.148 | ?1.00 | ?2.9 | ○ | |
| E2 | ?1.35 | ?120 | ?0.19 | ?0.24 | ?0.141 | ?1.26 | ?4.1 | ◎ | |
| E3 | ?1.35 | ?120 | ?0.24 | ?0.26 | ?0.178 | ?1.08 | ?4.8 | ◎ | |
| Comparative Examples embodiment | C4 | ?1.10 | ?100 | ?0.13 | ?0.12 | ?0.118 | ?0.92 | ?0.8 | × |
| C5 | ?1.10 | ?100 | ?0.14 | ?0.13 | ?0.127 | ?0.93 | ?1.2 | × | |
| C6 | ?1.10 | ?100 | ?0.12 | ?0.16 | ?0.109 | ?1.33 | ?1.7 | △ | |
| E4 | ?1.10 | ?100 | ?0.15 | ?0.14 | ?0.136 | ?0.93 | ?3.2 | ◎ | |
| E5 | ?1.10 | ?100 | ?0.17 | ?0.18 | ?0.155 | ?1.06 | ?3.8 | ◎ | |
| E6 | ?1.10 | ?100 | ?0.20 | ?0.22 | ?0.182 | ?1.10 | ?4.3 | ◎ | |
| Comparative Examples embodiment | C7 | ?1.10 | ?80 | ?0.12 | ?0.12 | ?0.109 | ?1.00 | ?0.7 | × |
| C8 | ?1.10 | ?80 | ?0.13 | ?0.12 | ?0.118 | ?0.92 | ?1.0 | × | |
| C9 | ?1.10 | ?80 | ?0.14 | ?0.15 | ?0.127 | ?1.07 | ?1.3 | × | |
| E7 | ?1.10 | ?80 | ?0.16 | ?0.15 | ?0.145 | ?0.94 | ?2.6 | ○ | |
| E8 | ?1.10 | ?80 | ?0.17 | ?0.19 | ?0.155 | ?1.12 | ?3.3 | ◎ | |
| E9 | ?1.10 | ?80 | ?0.18 | ?0.21 | ?0.164 | ?1.17 | ?4.1 | ◎ | |
| Comparative Examples embodiment | C10 | ?0.90 | ?65 | ?0.10 | ?0.09 | ?0.111 | ?0.90 | ?1.1 | × |
| C11 | ?0.90 | ?65 | ?0.11 | ?0.10 | ?0.122 | ?0.91 | ?1.3 | × | |
| C12 | ?0.90 | ?65 | ?0.11 | ?0.13 | ?0.122 | ?1.18 | ?1.9 | △ | |
| E10 | ?0.90 | ?65 | ?0.12 | ?0.12 | ?0.133 | ?1.00 | ?2.2 | ○ | |
| E11 | ?0.90 | ?65 | ?0.12 | ?0.15 | ?0.133 | ?1.25 | ?2.9 | ○ | |
| E12 | ?0.90 | ?65 | ?0.15 | ?0.16 | ?0.167 | ?1.07 | ?3.7 | ◎ | |
Therefore, even the thickness that the basic grid wall 2a of hexagonal-cell honeycomb structure has is 140 μ m or littler, by using the present invention, described structure also can have enough intensity, is applied to the support of the catalyst in the waste gas cleaning system.
In addition, though the main flow of legacy cellular structure is to use square net, by using the present invention, these main flow structures can use hexagonal-cell honeycomb structure to replace.Therefore, described hexagonal-cell honeycomb structure can produce described advantage effectively.For example, the surface-area of the entrained catalyzer of hexagonal-cell honeycomb structure can be greater than the surface-area of square net honeycomb structure.
In described embodiment, preferably, the maximum value of Da/P is 0.3.When described maximum value greater than 0.3 the time, reduce the loss that the front end area of opening can pressure boost.
The relation that preferably, should meet Db/Da 〉=1.05 or Dbx/Dax 〉=1.05.Therefore, can improve resistance to rupture intensity better.More specifically, by meeting above-mentioned formula, the intensity of outmost circumference can be greater than the intensity of inboard.As a result, because improved outmost hoop strength and then improved one-piece construction, can access and have more high strength structure.
Preferably, in the measurement of mercury porosimetry, the voidage of described hexagonal-cell honeycomb structure is 40% or littler.When voidage greater than 40% the time, the problem of existence is the reduction of the strength of materials.
Preferably, because need to guarantee the quantity of the catalyzer that carries in catalytic process, the minimum aperture rate is 10%.
Preferably, described hexagonal-cell honeycomb structure is made by trichroite.Described cordierite material has lower intensity than the another kind of support of the catalyst SiC material of knowing.Adopt the present invention can overcome this low strength of cordierite material.
＜embodiment 2 〉
In this embodiment, under the situation that limits first area and second area, the relation between research diameter Da and the spacing P.
As shown in Figure 7, the shape that first area S1 has is similar to around the shape on the tubulose top layer 4 (shown in Fig. 1-2) of mesh walls 2, and comprises the center O of honeycomb structure 1.Second area S2 is restricted to the outside of first area S1 and the inside on top layer 4.
The analogy method of seeking described relation is as follows.Suppose that the top layer shape is intact circle, after each size that limits described structure, make graphical model, and this model is analyzed by a kind of graphic modeling software PATRAN (trade mark).Afterwards, be used for the SOLVER data processing of computation model, and carry out aftertreatment by PATRAN by a kind of Stress Analysis Software MARC.
When Dax/P in the S1 of first area less than 0.13 the time, can bear outside stress the S2/S1 value and all intersection that second area forms 80% or more than meet and concern Da/P 〉=0.13.
According to Simulation result, occur when the S2/S1 value be 0.2 or when bigger, honeycomb structure has satisfied intensity.Therefore, when the ratio (S2/S1) of second area S2 and first area S1 when being 0.2,80% or above satisfied Dax/P 〉=0.13 that concerns of the intersection in second area, wherein Dax is the mean diameter of the circle of three mesh openings profiles of contact, P is a mesh spacing.Structure with above-mentioned condition can have the required enough using strengths of support of the catalyst of waste gas cleaning system.
＜embodiment 3 〉
As shown in Figure 8, this embodiment relates to waste gas cleaning system 5, and described system is equipped with the first and second waste- gas cleaning parts 51,52, and described various piece is carried the catalyzer that is positioned on the ceramic honeycomb structure.
The first waste-gas cleaning part 51 is arranged in the upstream of waste gas cleaning system 5, comprises the hexagonal-cell honeycomb structure 1 according to embodiment 1.
Described waste gas cleaning system 5 is installed in the vapor pipe of oil engine 50.More specifically, the first waste-gas cleaning part 51 is connected with vapor pipe 59, the second waste-gas cleaning parts 52 of stretching out from oil engine 50 and is connected with the vapor pipe 58 that is arranged in the first waste-gas cleaning part, 51 downstreams.The oxygen sensor 61,62 that is used for detecting the oxygen concn of waste gas is installed in the vapor pipe 58,59.
The first waste-gas cleaning part 51 comprises housing 515 that flows through waste gas and the carrier 510 that is fixed in the described housing 515.
The second waste-gas cleaning part 52 comprises housing 525 that flows through waste gas and the carrier 520 that is fixed in the described housing 525.Described carrier 520 carries the catalyzer of purifying exhaust air.
In this embodiment, the carrier 510 that is arranged in the first waste-gas cleaning part 51 has hexagonal-cell honeycomb structure.More specifically, the external diameter of hexagonal-cell honeycomb structure described in the 3rd embodiment is 103mm, and its axial length is 105mm, and mesh spacing is 1.11mm, and the mean thickness of basic grid is 90 μ m, Dax/P=0.17.
The carrier 520 that is arranged in the second waste-gas cleaning part 52 has the square net honeycomb structure.More specifically, the external diameter of described square net honeycomb structure is 103mm, and axial length is 105mm, and grid thickness is 4mil, and mesh-density is 400cpsi.
The first waste-gas cleaning part 51 that is arranged in waste gas cleaning system 5 upstreams must have high purifying property.On the other hand, because be arranged in the described structure 1 acceptant intensive thermal shocking of described upstream side, structure 1 must have high physical strength.Therefore, because the square net honeycomb structure is better than hexagonal-cell honeycomb structure usually aspect physical strength, so described square net honeycomb structure is easy to be applied in the prior art.
Yet, in the present embodiment,, compare the advantage that described structure 1 can bring bigger support of the catalyst area to be caused effectively because hexagonal-cell honeycomb structure 1 is used the first waste-gas cleaning part 51 with the square net honeycomb structure.
By adopting improved hexagonal-cell honeycomb structure, can provide good waste gas cleaning system 5.In addition, described honeycomb structure has good thermal shock resistance, and stable performance in use.In addition, because the entrained catalyst layer thickness of described hexagonal-cell honeycomb structure is almost consistent, described catalyzer can be carried by described structure 1 effectively.Therefore, the premium properties of purifying exhaust air can be provided.Because the temperature of waste gas uprises near oil engine, pressure-losses value is also higher.Because the pressure-losses of hexagonal mesh is lower than the square net,, near oil engine, can provide low pressure-losses structure by adopting structure 1 of the present invention.
Compare with square net, good heating (warm up) performance also can be provided.
Although with reference to accompanying drawing, in conjunction with the preferred embodiments, the present invention has been described fully, it may be noted that for those skilled in the art it is obvious that various changes and modifications will become.
Claims (18)
1, a kind of hexagonal-cell honeycomb structure comprises:
A plurality of mesh walls, its cross section are hexagonal shape and form a plurality of hexagonal mesh passages;
The tubulose top layer, it is around described a plurality of mesh walls; Wherein
The thickness of basic grid wall on the cross section that forms described hexagonal shape is 140 μ m or littler, is Da/P 〉=0.13 at the diameter Da of the inscribed circle of the cross-shaped portion office of basic grid wall and the relation that mesh spacing P has.
2, hexagonal-cell honeycomb structure as claimed in claim 1, wherein said relation are Da/P 〉=0.16.
3, hexagonal-cell honeycomb structure as claimed in claim 1 or 2, wherein constituting the cross-shaped portion office that cross section is the outmost mesh walls of irregular hexagonal mesh shape with the tubulose top layer, perhaps in the cross-shaped portion office of outmost mesh walls and basic grid wall, the diameter Db of the round Ca of the opening profile of three walls of contact and the relation that described diameter Da has are Db/Da 〉=1.05.
4, hexagonal-cell honeycomb structure as claimed in claim 1 or 2, wherein said basic grid wall thickness are 110 μ m or littler.
5, hexagonal-cell honeycomb structure as claimed in claim 1 or 2, the voidage of wherein said mesh walls are 40% or littler.
6, hexagonal-cell honeycomb structure as claimed in claim 1 or 2, wherein said mesh walls is made by cordierite material.
7, a kind of hexagonal-cell honeycomb structure comprises:
A plurality of mesh walls, its cross section are hexagonal shape substantially and form a plurality of hexagonal mesh passages;
The tubulose top layer, it is around described a plurality of mesh walls; Wherein
Form described hexagonal shape and do not comprise that the thickness of the basic grid wall on described tubulose top layer is 140 μ m or littler by six mesh walls, in the cross-shaped portion office that described three basic grid walls form, contacting the circular diameter Da mean value Dax of opening profile of described three hexagonal mesh passages and the relation that mesh spacing P has is Dax/P 〉=0.13.
8, hexagonal-cell honeycomb structure as claimed in claim 7, wherein said formula relation is Dax/P 〉=0.16.
9, as claim 7 or 8 described hexagonal-cell honeycomb structures, wherein said basic grid wall thickness is 110 μ m or littler.
10, as claim 7 or 8 described hexagonal-cell honeycomb structures, wherein constituting the cross-shaped portion office that cross section is the outmost mesh walls of irregular hexagonal mesh shape with the tubulose top layer, perhaps in the cross-shaped portion office of outmost mesh walls and basic grid wall, the mean diameter Dbx of the round Ca of the opening profile of three mesh walls of contact, the relation that has with described diameter Da is Dbx/Dax 〉=1.05.
11, as claim 7 or 8 described hexagonal-cell honeycomb structures, wherein said mesh walls is made by cordierite material.
12, a kind of hexagonal-cell honeycomb structure comprises:
A plurality of mesh walls, its cross section are hexagonal shape substantially and form a plurality of hexagonal mesh passages;
The tubulose top layer is around described a plurality of mesh walls;
First area, its shape that has are similar to the outer circumferential shape on described tubulose top layer and comprise the center of honeycomb structure;
Second area, it is limited between described top layer and the described first area;
Forming the cross section by six mesh walls is described hexagonal shape and do not comprise that the thickness of the basic grid wall on described tubulose top layer is 140 μ m or littler, the pass that described first area S1 and described second area S2 have is S2/S1=0.2,80% relation that meets Dax/P 〉=0.13 in forming all intersection of described second area S2, wherein Dax is restricted to a circular diameter, this circle is at the opening profile of three the grid passages of cross-shaped portion office contact that formed by three basic grid walls, and P is restricted to mesh spacing.
13, hexagonal-cell honeycomb structure as claimed in claim 12, wherein said basic grid wall thickness are 110 μ m or littler.
14, as claim 12 or 13 described hexagonal-cell honeycomb structures, the voidage of wherein said mesh walls is 40% or littler.
15, as claim 12 or 13 described hexagonal-cell honeycomb structures, wherein said mesh walls is made by cordierite material.
16, a kind of waste gas cleaning system comprises:
The first waste-gas cleaning part;
The second waste-gas cleaning part, it is arranged in the described first waste-gas cleaning portion downstream;
Hexagonal-cell honeycomb structure, it is arranged in described first waste-gas cleaning part; Wherein
The cross section that forms described hexagonal-cell honeycomb structure is that the thickness of the basic grid wall of hexagonal shape is 140 μ m or littler, is Da/P 〉=0.13 at the diameter Da of the inscribed circle of the cross-shaped portion office of described basic grid wall and the relation of mesh spacing P.
17, a kind of waste gas cleaning system comprises:
The first waste-gas cleaning part;
The second waste-gas cleaning part, it is arranged in the described first waste-gas cleaning portion downstream;
Hexagonal-cell honeycomb structure, it comprises: the cross section is hexagonal shape substantially and forms a plurality of mesh walls of a plurality of hexagonal mesh passages and around the tubulose top layer of described a plurality of mesh walls; Wherein
Described hexagonal-cell honeycomb structure is arranged in described first waste-gas cleaning part, forming the cross section by six mesh walls is described hexagonal shape and do not comprise that the thickness of the basic grid wall on described tubulose top layer is 140 μ m or littler, in the cross-shaped portion office that described three basic grid walls form, contacting the circular diameter Da mean value Dax of opening profile of described three hexagonal mesh passages and the relation that mesh spacing P has is Dax/P 〉=0.13.
18, a kind of waste gas cleaning system comprises:
The first waste-gas cleaning part;
The second waste-gas cleaning part, it is arranged in the described first waste-gas cleaning portion downstream;
Hexagonal-cell honeycomb structure, it comprises: the cross section is hexagonal shape substantially and forms a plurality of mesh walls of a plurality of hexagonal mesh passages and around the tubulose top layer of described a plurality of mesh walls; Wherein
Described hexagonal-cell honeycomb structure is arranged in described first waste-gas cleaning part, forming the cross section by six mesh walls is described hexagonal shape, and the thickness that does not comprise the basic grid wall on described tubulose top layer is 140 μ m or littler, the pass that described first area S1 and described second area S2 have is S2/S1=0.2,80% relation that meets Dax/P 〉=0.13 in forming all intersection of described second area S2, wherein Dax is restricted to a circular diameter, this circle is at the opening profile of three the grid passages of cross-shaped portion office contact that formed by three basic grid walls, and P is restricted to mesh spacing.
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| CN103212451A (en) * | 2013-04-19 | 2013-07-24 | 中电投远达环保工程有限公司 | Honeycomb catalyst unit and honeycomb catalyst module |
| CN103506169A (en) * | 2012-06-29 | 2014-01-15 | 康奈可关精株式会社 | Method for producing metallic catalyst support |
| CN104080533A (en) * | 2012-01-27 | 2014-10-01 | 株式会社电装 | Honeycomb structure |
| CN104080533B (en) * | 2012-01-27 | 2016-11-30 | 株式会社电装 | Honeycomb molded body |
| CN107489492A (en) * | 2016-06-10 | 2017-12-19 | 日本碍子株式会社 | Honeycomb structured body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS54110189A (en) * | 1978-02-17 | 1979-08-29 | Ngk Insulators Ltd | Ceramic honeycomb structure |
| JPS60137436A (en) * | 1983-12-23 | 1985-07-22 | Toyota Motor Corp | Monolithic carrier |
| JP2892258B2 (en) * | 1993-07-29 | 1999-05-17 | 日本碍子株式会社 | Ceramic honeycomb structure |
| JPH10264125A (en) * | 1997-03-28 | 1998-10-06 | Ngk Insulators Ltd | Ceramic honeycomb structure |
| JP3126697B2 (en) * | 1998-03-31 | 2001-01-22 | 日本碍子株式会社 | High strength thin-walled honeycomb structure |
| JP5052717B2 (en) * | 2001-05-02 | 2012-10-17 | 日本碍子株式会社 | Honeycomb structure, and honeycomb filter and converter system using the same |
| JP2003095768A (en) * | 2001-09-18 | 2003-04-03 | Ngk Insulators Ltd | Honeycomb structure and method of manufacturing the same |
| JP2004181458A (en) * | 2004-01-21 | 2004-07-02 | Ngk Insulators Ltd | Hexagonal cell honeycomb structure |
| JP4788497B2 (en) * | 2005-12-27 | 2011-10-05 | 株式会社デンソー | Hex honeycomb structure |
-
2006
- 2006-12-11 CN CNB2006101659134A patent/CN100439292C/en active Active
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- 2011-04-20 JP JP2011093892A patent/JP2011156537A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104080533A (en) * | 2012-01-27 | 2014-10-01 | 株式会社电装 | Honeycomb structure |
| CN104080533B (en) * | 2012-01-27 | 2016-11-30 | 株式会社电装 | Honeycomb molded body |
| CN103506169A (en) * | 2012-06-29 | 2014-01-15 | 康奈可关精株式会社 | Method for producing metallic catalyst support |
| CN103212451A (en) * | 2013-04-19 | 2013-07-24 | 中电投远达环保工程有限公司 | Honeycomb catalyst unit and honeycomb catalyst module |
| CN107489492A (en) * | 2016-06-10 | 2017-12-19 | 日本碍子株式会社 | Honeycomb structured body |
| CN107489492B (en) * | 2016-06-10 | 2021-03-09 | 日本碍子株式会社 | Honeycomb structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100439292C (en) | 2008-12-03 |
| JP2011156537A (en) | 2011-08-18 |
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