US5157010A
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Metallic honeycomb as catalyst carrier with microstructures for flow mixing
Assignee: Vitesco Technologies Lohmar Verwaltungs GmbH
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Filing: 1991-07-17
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Granted: 1992-10-20
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Expires: 2011-07-17
Abstract
Abstract A metallic honeycomb body, such as a catalyst carrier body for the exhaust system of a motor vehicle, includes 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. The at least one macrostructure determines a shape of the honeycomb body, an average channel width and essential mechanical properties of the honeycomb body. At least a part of the sheet metal layers have at least partial regions with microstructures. The microstructures have a height being substantially from 0.01 to about 0.3 times the average channel width and being at least 15 μm. The microstructures extend transversely or at an angle relative to the given flow direction and are spaced substantially from 1-10 mm apart from each other in the given flow direction.
Inventors
- 👤 Wolfgang Maus
- 👤 Ludwig Wieres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:53
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; F01N3/2821; B; B01; B01J; B01J35/00; B01J35/50; B01J35/56; B01J35/57; F01N2330/00; F01N2330/02; F01N2330/30; F01N2330/32; F01N2330/321; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/1234
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
122 words
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 μm, 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.
Claim 2
Dependent Claim
122 words
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 μm, 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.
Claim 3
Dependent Claim
17 words
The honeycomb body according to claim 1, wherein said microstructures extend transversely to said given flow direction.
Claim 4
Dependent Claim
33 words
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.
Claim 5
Dependent Claim
31 words
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.
Claim 6
Dependent Claim
47 words
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.
Claim 7
Dependent Claim
17 words
The honeycomb body according to claim 5, wherein said grooves extend transversely to said given flow direction.
Claim 8
Dependent Claim
47 words
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.
Claim 9
Dependent Claim
17 words
The honeycomb body according to claim 7, wherein said beads extend transversely to said given flow direction.
Claim 10
Dependent Claim
47 words
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.
Claim 11
Dependent Claim
17 words
The honeycomb body according to claim 9, wherein said nubs extend transversely to said given flow direction.
Claim 12
Dependent Claim
47 words
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.
Claim 13
Dependent Claim
17 words
The honeycomb body according to claim 11, wherein said channels extend transversely to said given flow direction.
Claim 14
Dependent Claim
26 words
The honeycomb body according to claim 1, wherein said microstructures extend at an angle of substantially from 75° to 105° relative to said given flow direction.
Claim 15
Dependent Claim
23 words
The honeycomb body according to claim 1, wherein said microstructures extend at an angle of about 90° relative to said given flow direction.
Claim 16
Dependent Claim
25 words
The honeycomb body according to claim 1, wherein said microstructures extend at an angle of substantially ±15° to 75° relative to said given flow direction.
Claim 17
Dependent Claim
23 words
The honeycomb body according to claim 1, wherein said microstructures extend at an angle of substantially 45° relative to said given flow direction.
Claim 18
Dependent Claim
40 words
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.
Claim 19
Dependent Claim
40 words
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.
Claim 20
Dependent Claim
24 words
The honeycomb body according to claim 1, wherein said microstructures are mutually spaced apart by a spacing of substantially from 2 to 8 mm.
Claim 21
Dependent Claim
24 words
The honeycomb body according to claim 1, wherein said microstructures are mutually spaced apart by a spacing of substantially from 4 to 6 mm.
Claim 22
Dependent Claim
27 words
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.
Claim 23
Dependent Claim
28 words
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.
Claim 24
Dependent Claim
24 words
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.
Claim 25
Dependent Claim
43 words
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.
Claim 26
Dependent Claim
112 words
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 μm, 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.
Claim 27
Dependent Claim
112 words
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 μm, 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.
Claim 28
Dependent Claim
17 words
The honeycomb body according to claim 25, wherein said microstructures extend transversely to said given flow direction.
Claim 29
Dependent Claim
131 words
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 μm, 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.
Claim 30
Dependent Claim
131 words
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 μm, 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.
Claim 31
Dependent Claim
19 words
The honeycomb catalyst carrier body according to claim 27, wherein said microstructures extend transversely to said given flow direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |