Turbine housing for a turbocharger
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0321190
(2009-01-16)
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등록번호 |
US-7798774
(2010-10-11)
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우선권정보 |
GB-0614392.9(2006-07-20) |
발명자
/ 주소 |
- Allport, John Martin
- Chiu, Georgina
- Martin, Clive Robert
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출원인 / 주소 |
- Cummins Turbo Technologies Limited
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
2 |
초록
▼
A turbine housing (13) for a radial flow turbine, particularly a turbine used in an exhaust gas turbocharger. The housing has a general volute shape with a substantially annular part extending around the turbine axis and an inlet duct (20) extending therefrom. The inlet duct (20) has a first wall fa
A turbine housing (13) for a radial flow turbine, particularly a turbine used in an exhaust gas turbocharger. The housing has a general volute shape with a substantially annular part extending around the turbine axis and an inlet duct (20) extending therefrom. The inlet duct (20) has a first wall facing part of the outer surface of the annular part of the housing, a pair of spaced webs (44) extending from the outer surface of the circular part of the housing to the first wall, the webs defining a valley (45) therebetween. The arrangement renders the housing stiffer and less prone to fatigue cracking.
대표청구항
▼
The invention claimed is: 1. A turbine housing for a radial flow turbine having an axis of rotation, the housing comprising a casting have a generally volute shape with a substantially annular part extending around the axis and an inlet duct extending therefrom, the inlet duct having a first wall f
The invention claimed is: 1. A turbine housing for a radial flow turbine having an axis of rotation, the housing comprising a casting have a generally volute shape with a substantially annular part extending around the axis and an inlet duct extending therefrom, the inlet duct having a first wall facing part of an outer surface of the annular part of the housing, at least two spaced apart webs, each web extending from a portion of the outer surface of the substantially annular part of the housing to the first wall, the webs defining a valley therebetween. 2. A turbine housing according to claim 1, wherein the webs are integrally formed with the rest of the housing. 3. A turbine housing according to claim 1, wherein the webs increase in thickness from the substantially annular part of the housing to the first wall of the inlet duct. 4. A turbine housing according to claim 1, wherein the webs are divergent in the direction from the substantially annular part of the housing to the first wall of the inlet duct. 5. A turbine housing according to claim 1, wherein the webs increase in thickness towards a bottom of the valley. 6. A turbine housing according to claim 1, wherein each web includes at least one facing surface, and wherein the valley is defined by arcuate declivities of facing surfaces of the webs. 7. A turbine housing according to claim 1, wherein the first wall of the inlet duct is arcuate. 8. A turbine housing according to claim 1, wherein there is an arcuate declivity on said first wall extending from a mouth of the inlet to the valley bottom. 9. A turbine housing according to claim 1, wherein the inlet has a mouth with an outwardly extending flange. 10. A turbine housing according to claim 9, wherein the webs are joined to said flange. 11. A turbine housing according to claim 10, wherein the flange is generally rectangular in outline and the each web joins with the flange substantially adjacent to a corner of the flange. 12. A turbine housing according to claim 1, wherein the inlet duct has a second wall opposite said first wall, both the walls having central depressions. 13. A turbine housing according to claim 1, wherein the webs are free of discontinuities. 14. A turbine housing according to claim 1, wherein a casting boss is defined on the outer surface of the annular part of the housing. 15. A turbine housing according to claim 14, wherein the webs extend from the casting boss. 16. A turbine housing according to claim 1 and further comprising an outlet extending axially from the housing. 17. A turbine housing according to claim 1, wherein each web extends from an adjacent portion of the outer surface of the substantially annular part of the housing. 18. A turbine housing according to claim 1, where there are more than two webs and a plurality of valleys defined between the webs. 19. A turbine comprising a turbine wheel disposed in a turbine housing according to claim 1. 20. A turbocharger comprising a compressor connected to a turbine having a turbine housing according to claim 1. 21. A method for casting a turbine housing comprising the steps of providing a casting die defining an aperture into which molten material is poured, the die being shaped to form a turbine housing having a generally volute shape with a substantially annular portion and an inlet duct extending approximately tangentially therefrom, the die having a first surface for defining a first wall of the inlet duct and a second surface for defining an adjacent arcuate surface of the substantially annular portion of the housing that faces the first wall of the inlet duct, including configuring the die so as to have at least two spaced apart channels extending between the first and second surfaces that provide spaced apart flow paths, introducing molten material into the die through the die aperture and allowing a portion of the material to flow along the channels, allowing the material to solidify and then ejecting the solidified material from the die. 22. A method for casting a turbine housing according to claim 21, further comprising providing the channels so that material flows along two flow paths between the aperture and a flange defined on the inlet duct. 23. A method for casting according to claim 21, wherein the flow paths are divergent. 24. A method according to claim 21, wherein channels increase in width in the direction from the first to the second surfaces.
이 특허에 인용된 특허 (2)
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Loffler, Paul; Erdmann, Wolfgang; Fledersbacher, Peter; Sumser, Siegfried; Wirbeleit, Friedrich; Willand, Jurgen, Exhaust gas turbocharger for an internal combustion engine.
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Wood, Terry G., Low-restriction turbine outlet housing.
이 특허를 인용한 특허 (1)
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Prater, David A., Single inlet/outlet connection for turbocharger compressor.
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