A corrugated sheet and a lightweight turbulent flow structure metal honeycomb carrier

Abstract

This application relates to a corrugated sheet and a lightweight turbulent flow structure metal honeycomb carrier, belonging to the technical field of exhaust gas treatment devices. It includes several crests, troughs, and several rows of recesses and protrusions. The crests and troughs are continuously arranged in an alternating sequence along the transverse direction of the corrugated sheet. Recesses are located on the crests, and protrusions are located on the troughs. Several rows of recesses and protrusions are continuously arranged in an alternating sequence along the longitudinal direction of the corrugated sheet. Each crest has a first cut corresponding to a recess, and each trough has a second cut corresponding to a protrusion. At least one crest is separated between two adjacent first cuts in the same row, and at least one trough is separated between two adjacent second cuts in the same row. This application has the effect of reducing the density of the first and second cuts on the corrugated sheet, thereby improving the strength of the corrugated sheet.

Description

Technical Field

[0001] This application relates to the field of exhaust gas treatment device technology, and in particular to a corrugated sheet and a lightweight turbulent flow structure metal honeycomb carrier. Background Technology

[0002] As the core component of the honeycomb carrier, the corrugated sheet is rolled up with the flat sheet to form a honeycomb structure. Its crests and troughs form tiny airflow channels, which increase the contact area between the exhaust gas and the catalyst coating through a large number of dense channels, thus significantly improving the catalytic reaction efficiency.

[0003] Existing utility model patent CN212958817U discloses a metal honeycomb foil strip with turbulent flow effect. In this patent, the protrusions and recesses on the foil strip are arranged in a matrix, which is beneficial for the uniform distribution of the protrusions and recesses on the foil strip. According to the accompanying drawings, the recesses in the same row are evenly distributed on each crest, and the protrusions in the same row are evenly distributed on each trough, with each crest and trough corresponding to a cut. In the prior art, because the recesses in the same row are evenly distributed on each crest and the protrusions in the same row are evenly distributed on each trough, the density of cuts on the corrugated sheet is too high, resulting in a decrease in the strength of the corrugated sheet. Summary of the Invention

[0004] To address the problem of excessively high density of cuts on a corrugated sheet leading to reduced strength, this application provides a corrugated sheet and a lightweight turbulent flow structure metal honeycomb carrier.

[0005] The corrugated sheet provided in this application adopts the following technical solution:

[0006] A corrugated sheet and a lightweight turbulent flow structure metal honeycomb carrier include a plurality of crests, troughs, and a plurality of rows of recesses and protrusions. The crests and troughs are arranged in a continuous alternating sequence along the transverse direction of the corrugated sheet. The recesses are disposed on the crests, and the protrusions are disposed on the troughs. The plurality of rows of recesses and protrusions are arranged in a continuous alternating sequence along the longitudinal direction of the corrugated sheet. The crests are provided with first cuts corresponding to the recesses, and the troughs are provided with second cuts corresponding to the protrusions. There is at least one crest between two adjacent first cuts in the same row, and there is at least one trough between two adjacent second cuts in the same row.

[0007] By adopting the above technical solution, the crests and troughs are alternately and continuously arranged along the transverse direction of the corrugated sheet, and the recesses and protrusions are alternately and continuously arranged along the longitudinal direction of the corrugated sheet. In the same row, there is at least one trough between two adjacent protrusions and at least one crest between two adjacent recesses. This increases the distance between the first and second cuts in the same row and reduces the density of the first and second cuts on the corrugated sheet, thereby improving the strength of the corrugated sheet.

[0008] Preferably, the recessed portion is symmetrically arranged with respect to the crest portion, and the protruding portion is symmetrically arranged with respect to the trough portion.

[0009] By adopting the above technical solution, the concave part is symmetrically arranged with respect to the crest part, and the protruding part is symmetrically arranged with respect to the trough part, so that the resistance encountered by the exhaust gas during the flow process is more balanced, the airflow distribution is optimized, and the turbulence effect is enhanced.

[0010] Preferably, the recesses in two adjacent rows and the protrusions in two adjacent rows are staggered.

[0011] By adopting the above technical solution, the recesses and protrusions in adjacent rows are staggered. While ensuring the strength of the corrugated sheet, this increases the number of recesses and protrusions, making their distribution on the corrugated sheet more rational. The staggered arrangement also optimizes the airflow path within the corrugated sheet, further enhancing the turbulence effect.

[0012] Preferably, the cross-sectional trajectories of the protrusion and the depression are both sinusoidal curves, the two ends of the protrusion are smoothly connected to the trough by a circular arc, and the two ends of the depression are smoothly connected to the crest by a circular arc.

[0013] By adopting the above technical solution, the cross-sections of the protrusions and depressions are designed as sinusoidal curves, which can effectively guide the airflow direction, increase the complexity of the airflow path, and thus improve the turbulence effect. The protrusions and troughs, and the depressions and crests are connected by smooth arcs, which improves the overall structural strength of the corrugated sheet and avoids the risk of damage caused by stress concentration.

[0014] Preferably, the protrusion and the recess facing the exhaust gas flow end face are the leading surface. The leading surface includes a first end face and a second end face symmetrically arranged about the recess or the protrusion. The distance between the first end face and the second end face along the transverse direction of the corrugated sheet is L, and L gradually decreases along the exhaust gas flow direction.

[0015] By adopting the above technical solution, when the exhaust gas flows through the protrusion or depression, the exhaust gas flows along the first end face and the second end face, so that the exhaust gas forms a gradually changing flow path when entering the protrusion or depression, reducing the resistance of the exhaust gas flow through the depression and protrusion, and reducing the back pressure of the exhaust gas.

[0016] Preferably, both the first end face and the second end face are planar, and the first end face and the second end face are smoothly connected by an arc surface.

[0017] By adopting the above technical solution, both the first end face and the second end face are designed as planes and smoothly connected by arc surfaces, so that the exhaust gas can transition more smoothly during the flow process, reducing the stress concentration of the airflow at the first end face and the second end face, and improving the uniformity of the force on the recessed and protruding parts.

[0018] Preferably, each of the protrusions and recesses has a turbulent flow section at its rear end. The end face of the turbulent flow section facing the exhaust gas flow is the front face. The front face is symmetrical about the leading face. The middle gas channel of the protrusion or the recess is opposite to the front face, so that the exhaust gas flowing in the protrusion or the recess can flow to the inside and outside of the turbulent flow section.

[0019] By adopting the above technical solution, the exhaust gas flowing through the protrusion and the exhaust gas flowing through the depression pass through the turbulent section again. When the exhaust gas passes through the front end face, it is diverted to the inner and outer sides of the turbulent section, which again disrupts the laminar flow of the exhaust gas, increases the intensity of the turbulence of the exhaust gas, and improves the turbulence effect of the exhaust gas.

[0020] Preferably, the front end face includes a first guide surface and a second guide surface that are symmetrical about the turbulent section. The distance between the first guide surface and the second guide surface in the transverse direction of the corrugated sheet is M, and M gradually increases along the direction of exhaust gas flow. A tip is formed at the connection between the first guide surface and the second guide surface, and the intermediate gas channel of the protrusion or the recess is opposite to the tip.

[0021] By adopting the above technical solution, the first and second guide surfaces are symmetrical about the turbulent section, ensuring a uniform distribution of the force exerted by the exhaust gas on the turbulent section. The distance M between the first and second guide surfaces gradually increases, resulting in a conical structure where the tip faces the protrusion or depression of the turbulent section. When the exhaust gas flows through the turbulent section along the first and second guide surfaces, the resistance encountered by the exhaust gas is reduced, lowering the back pressure. Simultaneously, the tip punctures loose aggregates mixed in the exhaust gas, reducing the possibility of blockage in the corrugated sheet's gas flow channels.

[0022] A lightweight turbulent flow structure metal honeycomb carrier, using the corrugated sheet, also includes a flat sheet, the corrugated sheet being laid on the flat sheet to form a layered honeycomb structure, and several of the layered honeycomb structures being stacked.

[0023] Preferably, the flat sheet has several through holes so that exhaust gas can flow between different layered honeycomb structures.

[0024] By adopting the above technical solution, the numerous through holes on the flat sheet allow exhaust gas to circulate between different layered honeycomb structures, increasing the variation in the path and direction of exhaust gas flow, thereby further enhancing the turbulence effect of the overall structure. Simultaneously, the through holes on the flat sheet reduce material usage, helping to lower the overall weight of the metal honeycomb carrier.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. By setting recesses and protrusions at the crests and troughs respectively, and by separating two adjacent recesses or protrusions in the same row by at least one crest or trough, the spacing between the first cuts and the spacing between the second cuts in the same row is increased, the density of the first cuts and the second cuts is reduced, thereby significantly improving the overall strength of the corrugated sheet.

[0027] 2. When the exhaust gas flows through the protrusion or depression, the exhaust gas flows along the first end face and the second end face, so that the exhaust gas forms a gradually changing flow path when entering the protrusion or depression, reducing the resistance of the exhaust gas flow through the depression and protrusion, and reducing the back pressure of the exhaust gas.

[0028] 3. The first and second guide surfaces are symmetrical about the turbulent section, ensuring a uniform distribution of the force exerted by the exhaust gas on the turbulent section. The distance M between the first and second guide surfaces gradually increases, resulting in a conical structure where the tip faces the protrusion or depression of the turbulent section. As the exhaust gas flows through the turbulent section along the first and second guide surfaces, the resistance encountered by the exhaust gas is reduced, lowering the back pressure. Simultaneously, the tip punctures loose aggregates in the exhaust gas, reducing the possibility of blockage in the gas flow channels of the corrugated sheet. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a corrugated sheet according to Embodiment 1 of this application.

[0030] Figure 2 This is a front view of the corrugated sheet of Embodiment 1 of this application.

[0031] Figure 3 This is a top view of the corrugated sheet of Embodiment 1 of this application.

[0032] Figure 4This is a schematic diagram of the positions of the first tangent, the second tangent, and the third tangent on the trough of Embodiment 2 of this application.

[0033] Figure 5 This is a schematic diagram of the corrugated sheet structure of Embodiment 2 of this application.

[0034] Figure 6 yes Figure 5 Enlarged view of section A.

[0035] Figure 7 This is a top view of the corrugated sheet of Embodiment 2 of this application.

[0036] Figure 8 yes Figure 7 Enlarged view of section B in the middle.

[0037] Figure 9 This is a front view of the corrugated sheet of Embodiment 2 of this application.

[0038] Figure 10 It is along Figure 9 A cross-sectional view of the CC line.

[0039] Figure 11 This is a schematic diagram of a lightweight turbulent flow structure metal honeycomb carrier according to an embodiment of this application.

[0040] Figure 12 It is a structural schematic diagram used to illustrate the arrangement of through holes in a flat plate.

[0041] Explanation of reference numerals in the attached drawings: 1. Corrugated sheet; 11. Crest; 12. Trough; 13. Recess; 14. Protrusion; 15. First cut; 16. Second cut; 21. Cutting line; 22. First tangent; 23. Second tangent; 24. Third tangent; 3. Leading surface; 31. First end face; 32. Second end face; 4. Turbulent section; 41. Front end face; 411. First guide surface; 412. Second guide surface; 413. Tip; 5. Flat sheet; 51. Through hole; 52. Layered honeycomb structure. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-12 This application will be described in further detail.

[0043] This application discloses a corrugated sheet.

[0044] Example 1

[0045] Reference Figure 1 , Figure 2A corrugated sheet includes a plurality of crests 11, troughs 12, and a plurality of rows of recesses 13 and protrusions 14. The crests 11 and troughs 12 are arranged continuously and alternately along the transverse direction of the corrugated sheet 1. A single flat plate-shaped substrate is formed into continuous crests 11 and troughs 12 by stamping. The trajectory of the cross-section of the crests 11 and troughs 12 is a sine curve. In this embodiment, the flow direction of exhaust gas in the crests 11 or troughs 12 is taken as the longitudinal direction of the corrugated sheet 1, and the transverse direction of the corrugated sheet 1 is taken as perpendicular to the exhaust gas flow direction. The recessed portions 13 and the protrusions 14 are arranged in rows. The recessed portions 13 are arranged on the crest portion 11, and the protrusions 14 are arranged on the trough portion 12. Several rows of recessed portions 13 and protrusions 14 are arranged in an alternating sequence along the longitudinal direction of the corrugated sheet 1. Specifically, a row of protrusions 14 is arranged between two adjacent rows of recessed portions 13, or a row of recessed portions 13 is arranged between two adjacent rows of protrusions 14.

[0046] Reference Figure 1 , Figure 2 The crest portion 11 is provided with a first cut 15 corresponding to the recessed portion 13, and the trough portion 12 is provided with a second cut 16 corresponding to the protrusion 14. Specifically, the formation process of the recessed portion 13 and the protrusion 14 is as follows: taking the recessed portion 13 as an example, two cutting lines 21 are first cut on the crest portion 11 by laser cutting along the transverse direction of the corrugated sheet 1. The size of the first cut 15 is between the two cutting lines 21. Then, the portion between the two cutting lines 21 is stamped by a specific template to form a recessed portion 13 of a specific shape. The recessed portion 13 is symmetrically arranged about the symmetrical surface of the crest portion 11, and the first cut 15 is formed between the two cutting lines 21. Both ends of the recessed portion 13 are smoothly connected to the protrusion 14 by arc. In this embodiment, the trajectory of the cross section of the recessed portion 13 is a sine curve. The protrusion 14 is formed on the same principle as the recess 13. The protrusion 14 is symmetrically arranged about the trough 12, and the trajectory of the cross section of the protrusion 14 is also a sine curve. The two ends of the protrusion 14 are smoothly connected to the trough 12 by arcs. The smooth arc connection between the protrusion 14 and the trough 12, and between the recess 13 and the crest 11, improves the overall structural strength of the corrugated sheet 1 and avoids the risk of damage caused by stress concentration.

[0047] Reference Figure 2 , Figure 3 In the same row, two adjacent first cuts 15 are separated by at least one crest portion 11. In this embodiment, one crest portion 11 is used as an example. In the same row, two adjacent second cuts 16 are separated by at least one trough portion 12. In this embodiment, one trough portion 12 is used as an example. Compared with the cut arrangement in the prior art, this arrangement increases the distance between the first cuts 15 and the second cuts 16 in the same row and reduces the density of the first cuts 15 and the second cuts 16 on the corrugated sheet 1, thereby improving the strength of the corrugated sheet 1.

[0048] Reference Figure 2 , Figure 3 The recesses 13 and protrusions 14 in adjacent rows are staggered. Specifically, the recesses 13 in the second row are located between two other recesses 13 in the second row. The protrusions 14 are arranged in the same way as the recesses 13. This arrangement increases the number of recesses 13 and protrusions 14 while ensuring the strength of the corrugated sheet 1, making the distribution of recesses 13 and protrusions 14 on the corrugated sheet 1 more reasonable. The staggered arrangement can also optimize the flow path of airflow in the corrugated sheet 1, further enhancing the turbulence effect.

[0049] The implementation principle of Embodiment 1 is as follows: by setting recessed portions 13 and protrusions 14 in the crest portion 11 and trough portion 12 respectively, and by separating two adjacent recessed portions 13 or protrusions 14 in the same row by at least one crest portion 11 or trough portion 12, the spacing between the first cuts 15 and the spacing between the second cuts 16 in the same row is increased, the setting density of the first cuts 15 and the second cuts 16 is reduced, thereby significantly improving the overall strength of the corrugated sheet 1.

[0050] Example 2

[0051] Reference Figure 4 The difference between this embodiment and Embodiment 1 is that, taking the protrusion 14 as an example, a first tangent 22 is first cut at the front end of the protrusion 14 on the trough portion 12. The first tangent 22 is V-shaped. Then, a second V-shaped tangent 23 is cut at the rear end of the protrusion 14. Then, a third tangent 24 is cut at intervals along the transverse direction. The substrate between the first tangent 22 and the second tangent 23 on the trough portion 12 is stamped to form the protrusion 14. Then, the substrate between the second tangent 23 and the third tangent 24 is stamped to form the turbulent flow portion 4. In the attached figure, the direction of the arrow F indicates the flow direction of the exhaust gas.

[0052] Reference Figure 5 , Figure 6 The first tangent 22 forms a leading surface 3 on the end face of the protrusion 14 opposite to the exhaust gas flow. The leading surface 3 includes a first end face 31 and a second end face 32 that are symmetrically arranged about the recess 13 or the protrusion 14.

[0053] Reference Figure 7 , Figure 8 The angle between the projections of the first end face 31 and the second end face 32 onto the horizontal plane is 120°. Let the distance between the first end face 31 and the second end face 32 along the transverse direction of the corrugated sheet 1 be L, and let L gradually decrease along the direction of exhaust gas flow.

[0054] When the exhaust gas flows through the protrusion 14, the exhaust gas flows along the first end face 31 and the second end face 32. The first end face 31 and the second end face 32 are planes that are inclined to the direction of exhaust gas flow, so that the exhaust gas forms a gradually changing flow path when it enters the protrusion 14, reducing the resistance of the exhaust gas flow through the recess 13 and the protrusion 14, and reducing the back pressure of the exhaust gas.

[0055] Reference Figure 7 , Figure 8 The first end face 31 and the second end face 32 are smoothly connected by an arc surface. Both the first end face 31 and the second end face 32 are designed as planes and are smoothly connected by an arc surface, so that the exhaust gas can transition more smoothly during the flow process, reducing the stress concentration of the airflow at the first end face 31 and the second end face 32, and improving the uniformity of the force on the recessed part 13 and the protrusion 14.

[0056] Reference Figure 9 , Figure 10 The second tangent 23 forms a front face 41 on the turbulent section 4, facing the exhaust gas flow. The front face 41 is symmetrical about the leading face 3. The impact amplitude of the turbulent section 4 is smaller than that of the protrusion 14, so that the front face 41 faces the exhaust gas flow channel in the protrusion 14. The front face 41 includes a first guiding face 411 and a second guiding face 412 that are symmetrical about the turbulent section 4.

[0057] Reference Figure 6 , Figure 7 The angle between the projections of the first guide surface 411 and the second guide surface 412 on the horizontal plane is 120°. The distance between the first guide surface 411 and the second guide surface 412 along the transverse direction of the corrugated sheet 1 is M, and M gradually increases along the direction of exhaust gas flow. A tip 413 is formed at the connection between the first guide surface 411 and the second guide surface 412. The tip 413 is opposite to the flow channel on the protrusion 14. When the exhaust gas passes through the flow channel on the protrusion 14, the turbulent section 4 stratifies the exhaust gas. A part of the exhaust gas flows to the inside of the turbulent section 4, and another part of the exhaust gas flows to the outside of the turbulent section 4, which again disrupts the laminar flow of the exhaust gas, increases the turbulence intensity of the exhaust gas, and improves the turbulence effect of the exhaust gas.

[0058] Reference Figure 6 , Figure 7 The first guide surface 411 and the second guide surface 412 are symmetrical about the turbulent section 4, ensuring a uniform distribution of the force exerted by the exhaust gas on the turbulent section 4. The distance M between the first guide surface 411 and the second guide surface 412 gradually increases, resulting in a conical structure with the tip 413 pointing towards the protrusion 14 or the recess 13. When the exhaust gas flows through the turbulent section 4 along the first guide surface 411 and the second guide surface, the resistance encountered by the exhaust gas is reduced, lowering the back pressure of the exhaust gas. At the same time, the tip 413 can pierce loose agglomerates mixed in the exhaust gas, reducing the possibility of blockage in the gas flow channel of the corrugated sheet 1.

[0059] The leading surface 3 and the corresponding turbulence section 4 on the recessed portion 13 are arranged in the same way as the protruding portion 14, with only the orientation of the structure being adjusted adaptively.

[0060] The implementation principle of Example 2 is as follows: When the exhaust gas flows through the protrusion 14 or the recess 13, the exhaust gas flows along the first end face 31 and the second end face 32. The first end face 31 and the second end face 32 are planes that are inclined to the direction of exhaust gas flow, so that the exhaust gas forms a gradually changing flow path when it enters the protrusion 14, reducing the resistance of the exhaust gas flow through the recess 13 and the protrusion 14, and reducing the back pressure of the exhaust gas.

[0061] When the exhaust gas passes through the protrusion 14 or the recess 13, the turbulence section 4 separates the exhaust gas into layers. Part of the exhaust gas flows to the inside of the turbulence section 4, and another part flows to the outside of the turbulence section 4, which again disrupts the laminar flow of the exhaust gas, increases the intensity of the turbulence, and improves the turbulence effect of the exhaust gas.

[0062] This application discloses a lightweight turbulent flow structure metal honeycomb carrier.

[0063] Reference Figure 11 , Figure 12 A lightweight turbulent flow structure metal honeycomb carrier, using the corrugated sheet 1 from Embodiment 2 above, also includes a flat sheet 5. The corrugated sheet 1 is laid flat on the flat sheet 5 to form a layered honeycomb structure 52, with several layers of layered honeycomb structures 52 stacked together. The flat sheet 5 has several through holes 51, allowing exhaust gas to circulate between different layered honeycomb structures 52, increasing the path and direction of exhaust gas flow, thereby further enhancing the overall turbulent flow effect. Simultaneously, the through holes 51 on the flat sheet 5 reduce material usage, helping to reduce the overall weight of the metal honeycomb carrier.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A corrugated sheet, characterized in that: It includes several crests (11), troughs (12), and several rows of recesses (13) and protrusions (14). The crests (11) and troughs (12) are arranged continuously in an alternating sequence along the transverse direction of the corrugated sheet (1). The recesses (13) are disposed on the crests (11), and the protrusions (14) are disposed on the troughs (12). Several rows of recesses (13) and protrusions (14) are arranged along the transverse direction of the corrugated sheet (1). The longitudinal alternating sequence is continuously arranged, the crest part (11) is provided with a first cut (15) corresponding to the recess part (13), the trough part (12) is provided with a second cut (16) corresponding to the protrusion part (14), two adjacent first cuts (15) in the same row are separated by at least one crest part (11), and two adjacent second cuts (16) in the same row are separated by at least one trough part (12); The protrusion (14) and the recess (13) facing the exhaust gas flow are the leading surface (3). The leading surface (3) includes a first end surface (31) and a second end surface (32) symmetrically arranged with respect to the recess (13) or the protrusion (14). The distance between the first end surface (31) and the second end surface (32) along the transverse direction of the corrugated sheet (1) is L, and L gradually decreases along the exhaust gas flow direction. Each of the protrusions (14) and the recesses (13) has a turbulent flow section (4) at its rear end. The end face of the turbulent flow section (4) facing the exhaust gas flow is the front face (41). The front face (41) is symmetrical about the leading face (3). The middle gas passage of the protrusions (14) or the recesses (13) is opposite to the front face (41) so that the exhaust gas flowing in the protrusions (14) or the recesses (13) can flow to the inside and outside of the turbulent flow section (4). The front end face (41) includes a first guide surface (411) and a second guide surface (412) that are symmetrical about the turbulent part (4). The distance between the first guide surface (411) and the second guide surface (412) along the transverse direction of the corrugated sheet (1) is M, and M gradually increases along the direction of exhaust gas flow. A tip (413) is formed at the connection between the first guide surface (411) and the second guide surface (412). The intermediate gas channel of the protrusion (14) or the recess (13) is opposite to the tip (413).

2. The corrugated sheet according to claim 1, characterized in that: The recessed portion (13) is symmetrically arranged with respect to the crest portion (11), and the protruding portion (14) is symmetrically arranged with respect to the trough portion (12).

3. The corrugated sheet according to claim 1, characterized in that: The recesses (13) in two adjacent rows and the protrusions (14) in two adjacent rows are all staggered.

4. The corrugated sheet according to claim 1, characterized in that: The cross-sectional trajectories of the protrusion (14) and the depression (13) are both sinusoidal curves. The two ends of the protrusion (14) are smoothly connected to the trough (12) by an arc, and the two ends of the depression (13) are smoothly connected to the crest (11) by an arc.

5. The corrugated sheet according to claim 1, characterized in that: Both the first end face (31) and the second end face (32) are planar, and the first end face (31) and the second end face (32) are smoothly connected by an arc surface.

6. A lightweight turbulent flow structure metal honeycomb carrier, using the corrugated sheet according to any one of claims 1-5, characterized in that: It also includes a flat sheet (5), on which the corrugated sheet (1) is laid to form a layered honeycomb structure (52), and several of the layered honeycomb structures (52) are stacked.

7. The lightweight turbulent flow structure metal honeycomb carrier according to claim 6, characterized in that: The flat plate (5) has several through holes (51) so that exhaust gas can flow between different layered honeycomb structures (52).

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