Claims
- 1. A metallic honeycomb body, comprising sheet metal layers at least partly having at least one macrostructure forming a plurality of channels for conveying a fluid in a given flow direction, said at least one macrostructure determining a shape of the honeycomb body, an average channel width and essential mechanical properties of the honeycomb body, and at least a part of said sheet metal layers having at least partial regions with microstructures, said microstructures having a height being substantially from 0.01 to about 0.3 times said average channel width and being at least 15 .mu.m, said microstructures extending at an angle relative to said given flow direction and being spaced substantially from 1-10 mm apart from each other in said given flow direction.
- 2. The honeycomb body according to claim 1, wherein said microstructures extend transversely to said given flow direction.
- 3. The honeycomb body according to claim 1, wherein said sheet metal layers are alternating smooth and corrugated sheet metal layers, and at least some of said corrugated sheet metal layers have said microstructures.
- 4. The honeycomb body according to claim 1, wherein said sheet metal layers are differently corrugated sheet metal layers, and at least some of said corrugated sheet metal layers have said microstructures.
- 5. The honeycomb body according to claim 1, wherein said sheet metal layers have surfaces and sides, and said microstructures are grooves extending at an angle relative to said given flow direction and projecting out of the surface of said sheet metal layers toward at least one side.
- 6. The honeycomb body according to claim 5, wherein said grooves extend transversely to said given flow direction.
- 7. The honeycomb body according to claim 1, wherein said sheet metal layers have surfaces and sides, and said microstructures are beads extending at an angle relative to said given flow direction and projecting out of the surface of said sheet metal layers toward at least one side.
- 8. The honeycomb body according to claim 7, wherein said beads extend transversely to said given flow direction.
- 9. The honeycomb body according to claim 1, wherein said sheet metal layers have surfaces and sides, and said microstructures are nubs extending at an angle relative to said given flow direction and projecting out of the surface of said sheet metal layers toward at least one side.
- 10. The honeycomb body according to claim 9, wherein said nubs extend transversely to said given flow direction.
- 11. The honeycomb body according to claim 1, wherein said sheet metal layers have surfaces and sides, and said microstructures are channels extending at an angle relative to said given flow direction and projecting out of the surface of said sheet metal layers toward at least one side.
- 12. The honeycomb body according to claim 11, wherein said channels extend transversely to said given flow direction.
- 13. The honeycomb body according to claim 1, wherein said microstructures extend at an angle of substantially from 75.degree. to 105.degree. relative to said given flow direction.
- 14. The honeycomb body according to claim 1, wherein said microstructures extend at an angle of about 90.degree. relative to said given flow direction.
- 15. The honeycomb body according to claim 1, wherein said microstructures extend at an angle of substantially .+-.15.degree. to 75.degree. relative to said given flow direction.
- 16. The honeycomb body according to claim 1, wherein said microstructures extend at an angle of substantially 45.degree. relative to said given flow direction.
- 17. The honeycomb body according to claim 15, wherein said angle between said microstructures and said given flow direction is approximately equal in size but of opposite sign for two of said sheet metal layers lying on top of one another.
- 18. The honeycomb body according to claim 16, wherein said angle between said microstructures and said given flow direction is approximately equal in size but of opposite sign for two of said sheet metal layers lying on top of one another.
- 19. The honeycomb body according to claim 1, wherein said microstructures are mutually spaced apart by a spacing of substantially from 2 to 8 mm.
- 20. The honeycomb body according to claim 1, wherein said microstructures are mutually spaced apart by a spacing of substantially from 4 to 6 mm.
- 21. The honeycomb body according to claim 1, wherein said microstructures have an extent or length in said given flow direction of substantially from 0.05 to 8 mm.
- 22. The honeycomb body according to claim 1, wherein said microstructures have an extent or length in said given flow direction of substantially from about 0.5 to 3 mm.
- 23. The honeycomb body according to claim 1, wherein said microstructures have a height from substantially about 0.05 to 0.1 times said average channel width.
- 24. The honeycomb body according to claim 1, wherein said sheet metal layers have contact regions, all of said sheet metal layers have said microstructures, and said microstructures have shapes, spacings and locations assisting in a locking of said microstructures in said contact regions.
- 25. A metallic honeycomb body, comprising sheet metal layers at least partly having at least one macrostructure forming a plurality of channels for conveying a fluid in a given flow direction, said at least one macrostructure determining an average channel width of the honeycomb body, and at least a part of said sheet metal layers having at least partial regions with microstructures, said microstructures having a height being substantially from 0.01 to about 0.3 times said average channel width and being at least 15 .mu.m, said microstructures extending at an angle relative to said given flow direction and being spaced substantially from 1-10 mm apart from each other in said given flow direction.
- 26. The honeycomb body according to claim 25, wherein said microstructures extend transversely to said given flow direction.
- 27. A honeycomb catalyst carrier body for the exhaust system of a motor vehicle, comprising sheet metal layers at least partly having at least one macrostructure forming a plurality of channels for conveying a fluid in a given flow direction, said at least one macrostructure determining a shape of the honeycomb body, an average channel width and essential mechanical properties of the honeycomb body, and at least a part of said sheet metal layers having at least partial regions with microstructures, said microstructures having a height being substantially from 0.01 to about 0.3 times said average channel width and being at least 15 .mu.m, said microstructures extending at an angle relative to said given flow direction and being spaced substantially from 1-10 mm apart from each other in said given flow direction.
- 28. The honeycomb catalyst carrier body according to claim 27, wherein said microstructures extend transversely to said given flow direction.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8900467[U] |
Jan 1989 |
DEX |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation of PCT application Ser. No. PCT/EP90/00086, filed Jan. 16, 1990.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4845073 |
Cyron |
Jul 1989 |
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0136515 |
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EPX |
0298943 |
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Continuations (1)
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Number |
Date |
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Parent |
000086 |
Jan 1990 |
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