TURBINE
A turbine includes a housing including an inlet (61), an outlet (62), and a shroud section having a shroud surface (6) extending between the inlet and the outlet; and a turbine impeller housed in the housing and including a hub (221) and a plurality of blades (223) disposed on an outer peripheral su...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | A turbine includes a housing including an inlet (61), an outlet (62), and a shroud section having a shroud surface (6) extending between the inlet and the outlet; and a turbine impeller housed in the housing and including a hub (221) and a plurality of blades (223) disposed on an outer peripheral surface of the hub, each of the blades having a side edge (7) extending along the shroud surface. The side edge of each of the blades has a side-edge upstream portion (73) disposed on a side of the inlet, and a side-edge downstream portion (74) disposed on a side of the outlet. The shroud surface has a shroud upstream portion (63) disposed on the side of the inlet and extending along the side-edge upstream portion, and a shroud downstream portion (64) disposed on the side of the outlet and extending along the side-edge downstream portion. The shroud upstream portion has a meridional cross-sectional shape whose inclination angle (¸ 1 ) with respect to an axis (L) of the hub at the side of the inlet is smaller than in a case where the shroud upstream portion has a meridional cross-sectional shape of an arc shape and the shroud downstream portion has a meridional cross-sectional shape of a linear shape along a direction of the axis of the hub. |
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