IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0604957
(2006-11-28)
|
등록번호 |
US-7793494
(2010-10-04)
|
우선권정보 |
DE-10 2006 009 676(2006-03-02); DE-10 2006 024 778(2006-05-27) |
발명자
/ 주소 |
- Wirth, Georg
- Neumann, Felix
|
출원인 / 주소 |
- J. Eberspaecher GmbH & Co., KG
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
81 인용 특허 :
5 |
초록
▼
The invention relates to a static mixer for an exhaust system of an internal combustion engine. The mixer has a wall structure that is arranged across the directional of flow in a pipe and has several layers of a corrugated sheeting material laying across one another in the direction of flow. The ce
The invention relates to a static mixer for an exhaust system of an internal combustion engine. The mixer has a wall structure that is arranged across the directional of flow in a pipe and has several layers of a corrugated sheeting material laying across one another in the direction of flow. The cells through which the flow can pass in the direction of flow are provided between the sheeting material of neighboring layers. The sheeting material has baffles for all or several of the cells. The baffles are arranged on the sheeting material so that they are arranged on their outgoing flow side in the case of said cells and extend in the direction of flow and across it.
대표청구항
▼
The invention claimed is: 1. A static mixer for an exhaust system of an internal combustion engine, comprising: a wall structure arranged across the direction of flow in a pipe; a plurality of layers of a corrugated sheeting material situated one above the other in said wall structure; wherein said
The invention claimed is: 1. A static mixer for an exhaust system of an internal combustion engine, comprising: a wall structure arranged across the direction of flow in a pipe; a plurality of layers of a corrugated sheeting material situated one above the other in said wall structure; wherein said plurality of layers form a plurality of cells through which cells an exhaust flow passes; and a plurality of baffles arranged along the sheeting material and comprising baffle pairs, each baffle pair comprising a first and a second baffle, wherein for each said baffle pair, the first baffle is arranged at a distance of one half-wavelength relative to the second baffle, and wherein the second baffle of a first baffle pair is arranged at a distance of three half-wavelengths from the first baffle of a second baffle pair, and wherein at least one of said plurality of baffles is associated with at least one of said plurality of the cells, said at least one baffle being arranged on at least a first of said plurality of layers of sheeting material in such a way that it is arranged on the outgoing flow side of said cells and extends across the direction of flow. 2. The mixer according to claim 1, wherein said sheeting material is uniform in all layers and has corrugations of the same wavelength and the same amplitude. 3. The mixer according to claim 1, wherein a first and a second of said layers of corrugated sheeting material are so arranged that said first layer is offset by one half wavelength from said second layer. 4. The mixer according to claim 1, wherein said corrugated sheeting material has a sinusoidal or rectangular or trapezoidal shape. 5. The mixer according to claim 1, wherein said sheeting material extends without interruption over at least first and second of said layers and said first layer is bent or folded over into said second layer on the lateral end. 6. The mixer according to claim 1, wherein for each said baffle pair, said first baffle along the sheeting material protrudes away from the sheeting material in an orientation opposite to the orientation of said second baffle with regard to the direction of flow. 7. The mixer according to claim 1, wherein for said plurality of baffles, said first baffle of said first baffle pair protrudes away from said layer of sheeting material with the same orientation as the orientation of said first baffle of said second baffler pair with regard to the direction of flow, said first baffle of said first baffle pair and said first baffle of said second baffle pair being at a distance of two wavelengths apart from one another along the sheeting material. 8. The mixer according to claim 1, wherein first and second baffles associated with first and second of said plurality of cells protrude away from the sheeting material with opposite orientations with respect to the direction of flow. 9. The mixer according to claim 1, wherein first and second baffles associated with first and second of said plurality of cells protrude away from the sheeting material with the same orientation with respect to the direction of flow. 10. A static mixer for an exhaust system of an internal combustion engine, comprising: a wall structure arranged across the direction of flow in a pipe; a plurality of layers of a corrugated sheeting material situated one above the other in said wall structure; wherein said plurality of layers form a plurality of cells through which cells an exhaust flow passes; at least one baffle associated with at least one of said plurality of the cells, said at least one baffle being arranged on at least a first of said plurality of layers of sheeting material in such a way that it is arranged on the outgoing flow side of said cells and extends across the direction of flow, wherein said first of said plurality of layers with baffles and at least a second of said plurality of layers without baffles are alternately opposite one another within said wall structure. 11. The mixer according to claim 1, wherein said baffles are angled by approximately 45 degrees with respect to the direction of flow. 12. The mixer according to claim 10, wherein said baffles are integrally molded on said sheeting material. 13. The mixer according to claim 1, wherein said baffle is of such dimension and is oriented with respect to the direction of flow so that it overlaps and seals one of said plurality of cells by at least 80% to 95% in the direction of flow. 14. The mixer according to claim 1, wherein a diameter of one of said plurality of said cells measured across the direction of flow is larger than its length measured in the direction of flow. 15. The mixer according to claim 1, wherein said baffle has a breakaway edge on its respective outgoing flow end. 16. The mixer according to claim 1, wherein a longitudinal extent of said baffle measured in the direction of flow is approximately equal to the length of one of said plurality of cells measured in the direction of flow. 17. The mixer according to claim 1, wherein a transverse extent of said baffle measured across the direction of flow is approximately equal to a diameter of one of said plurality of cells measured across the direction of flow. 18. The mixer according to claim 1, wherein the at least one baffle has a convex or concave curvature, or a saddle-shaped curvature, on the oncoming flow side. 19. The mixer according to claim 1, wherein in the circumferential direction, said sheeting material is encompassed by a ring that is inserted into the pipe in the installed state of the mixer. 20. The mixer according to claim 19, wherein said sheeting material together with said ring forms a unit that can be preassembled and is arranged in the pipe in the installed state. 21. The mixer according to claim 19, wherein said sheeting material is attached to the pipe or said ring on lateral ends of at least one of said layers. 22. The mixer according to claim 1, wherein said sheeting material is arranged in loose contact between lateral ends of first and second of said plurality of layers. 23. An exhaust gas treatment device for an exhaust system of an internal combustion engine, comprising at least one exhaust gas treatment insert that is arranged in a tubular body of the exhaust gas treatment device; a mixer arranged in said tubular body upstream from said exhaust gas treatment insert, said tubular body of the exhaust gas treatment device forming a pipe; and an injection device for introducing a liquid upstream from the mixer, wherein said mixer comprises: a wall structure arranged across the direction of flow in the pipe; a plurality of layers of a corrugated sheeting material situated one above the other in said wall structure; wherein said plurality of layers form a plurality of cells through which cells an exhaust flow passes; and at least one baffle associated with at least one of said plurality of the cells, said at least one baffle being arranged on at least a first of said plurality of layers of sheeting material in such a way that it is arranged on the outgoing flow side of said cells and extends across the direction of flow, wherein a first of said plurality of layers with baffles and at least a second of said plurality of layers without baffles are alternately opposite one another within said wall structure. 24. The static mixer of claim 1, wherein the corrugated sheeting material extends across the direction of flow. 25. The static mixer of claim 1, wherein the corrugated sheeting material is corrugated wavelike.
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