Turbine
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsTakao Yokoyama, Seiichi Ibaraki, Ricardo Martinez-Botas, Mingyang Yang
Life of this patent
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Abstract
A turbine is provided with a turbine rotor blade, and a turbine housing having a scroll part extending along a circumferential direction of the turbine rotor blade. The scroll part is configured such that an A/R ratio of a flow passage area A to a distance R between an axis of the turbine rotor blade and a flow passage center of the scroll part has a concave distribution at least in a part of a graph where an abscissa represents a circumferential position around the axis of the turbine rotor blade and an ordinate represents the A/R ratio.
Claims4
A turbine comprising:
- a turbine rotor blade;
- and
- a turbine casing having,
- an introducing part, and
- a scroll part extending along a circumferential direction of the turbine rotor blade, an outer peripheral wall of the scroll part extending continuously from an outer peripheral wall of the introducing part,
- wherein the outer peripheral wall of the scroll part has a tongue part in contact with a virtual circle around an axis of the turbine rotor blade, and
- wherein when a flow passage of an exhaust gas is defined by the outer peripheral wall of the scroll part and the virtual circle, an A/R ratio of a flow passage area A to a distance R between an axis of the turbine rotor blade and a flow passage center of the scroll part has a concave distribution at least in a part of a graph where an abscissa represents a circumferential position around the axis of the turbine rotor blade and an ordinate represents the A/R ratio.
Dependencies are inferred from the claim text.