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US 7,255,530 B2Granted
Vane and throat shaping
AssigneeHoneywell International Inc.
InventorsCostas Vogiatzis, Nidal A. Ghizawi
Life of this patent
Estimating the term…
Abstract
An exemplary vane for a radial turbine assembly includes a hub end and a shroud end that define vane height, a leading edge and a trailing edge that define vane length along a camberline and an inner surface and an outer surface that extend from the hub end to the shroud end and meet at the leading edge and the trailing edge and that define vane thickness wherein, for at least a portion of the vane, vane length and vane thickness vary with respect to vane height. Other exemplary vanes, assemblies, methods, etc., are also disclosed.
Claims17
A vane for a radial turbine assembly, the vane comprising:
- a hub end and a shroud end that define vane height with respect to a radial turbine;
- an arcuate leading edge and an arcuate trailing edge that define vane length and that define a minimum vane length along a camberline, the minimum vane length located between the hub end and the shroud end;
- and
- an inner surface and an outer surface that extend from the hub end to the shroud end and meet at the leading edge and the trailing edge and that define vane thickness;
- wherein, for at least a portion of the vane, vane length and vane thickness vary with respect to vane height.
2 more elements
A variable geometry mechanism for a radial turbine, the mechanism comprising:
- a plurality of vanes wherein each vane includes
- a hub end and a shroud end that define vane height with respect to a radial turbine,
- an arcuate leading edge and an arcuate trailing edge that define vane length and that define a minimum vane length along a camberline, the minimum vane length located between the hub end and the shroud end, and
- an inner surface and an outer surface that extend from the hub end to the shroud end and meet at the leading edge and the trailing edge and that define vane thickness wherein, for at least a portion of each vane, vane length and vane thickness vary with respect to vane height and wherein adjacent vanes form a throat defined by a trailing edge of one vane and an inner surface of another vane;
- and
- adjustment means for adjusting the plurality of vanes.
3 more elements
A turbine assembly comprising:
- a radial turbine wheel having an axis of rotation;
- and
- a variable geometry mechanism that comprises
- a plurality of vanes wherein each vane includes
- a hub end and a shroud end that define vane height parallel to the axis of rotation of the turbine wheel,
- an arcuate leading edge and an arcuate trailing edge that define vane length and that define a minimum vane length along a camberline, the minimum vane length located between the hub end and the shroud end, and
- an outer surface substantially facing away from the turbine wheel and an inner surface substantially facing the turbine wheel that extend from the hub end to the shroud end and meet at the leading edge and the trailing edge and that define vane thickness wherein, for at least a portion of each vane, vane length and vane thickness vary with respect to vane height and wherein adjacent vanes form a throat defined by a trailing edge of one vane and an inner surface of another vane wherein the throat has a maximum width between the hub end and the shroud end;
- and
- adjustment means for adjusting the plurality of vanes to thereby adjust throats with respect to the turbine wheel.
6 more elements
A turbine assembly comprising:
- a radial turbine wheel having an axis of rotation;
- and
- a variable geometry mechanism that comprises
- a plurality of vanes wherein each vane includes
- a hub end and a shroud end that define vane height parallel to the axis of rotation of the turbine wheel,
- an arcuate leading edge and an arcuate trailing edge that define vane length and that define a minimum vane length along a camberline, the minimum vane length located between the hub end and the shroud end, and
- an outer surface substantially facing away from the turbine wheel and an inner surface substantially facing the turbine wheel that extend from the hub end to the shroud end and meet at the leading edge and the trailing edge and that define vane thickness wherein, for at least a portion of each vane, vane stagger angle varies with respect to vane height and wherein adjacent vanes form a throat defined by a trailing edge of one vane and an inner surface of another vane;
- and
- adjustment means for adjusting the plurality of vanes to thereby adjust throats with respect to the turbine wheel.
6 more elements
Dependencies are inferred from the claim text.