Turbomachine with double-faced rotor-shroud seal structure
AssigneeSiemens Automotive Corporation
InventorsSylvain Nadeau, William Holmes
Life of this patent
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Abstract
A turbomachine for moving air includes a shroud 12 disposed about an axis A. The shroud 12 has a pair of opposing faces 14 and 16 defining a gap 18 therebetween. The opposing faces are disposed generally transversely with respect to the axis. A rotor assembly 13 is mounted for rotation about the axis. The rotor assembly has a plurality of blades 22 with tips of the blades being coupled to an annular band 30. At least a portion 32 of the annular band is disposed in the gap 18. Seal structure 36 extends from each opposing face of the shroud and into the gap to reduce swirl and minimize air leakage across the gap.
Claims19
A turbomachine for moving air comprising:
- a shroud disposed about an axis, the shroud having a pair of opposing faces defining a gap therebetween, the opposing faces being disposed generally transversely with respect to the axis,
- a rotor assembly mounted for rotation about the axis, the rotor assembly having a plurality of blades, tips of the blades being coupled to an annular band, at least a portion of the annular band being disposed in said gap, and
- seal structure extending from each opposing face of the shroud and into the gap to reduce swirl and minimize air leakage across the gap.
A method of reducing effects of air flow between a shroud and a rotor assembly, the shroud being disposed about an axis and having a pair of opposing faces defining a gap therebetween, the opposing faces being disposed generally transversely with respect to the axis, the rotor assembly being mounted for rotation about the axis, the rotor assembly having a plurality of blades, tips of the blades being coupled to an annular band, at least a portion of the annular band being disposed in said gap, the method including:
- providing seal structure extending from each opposing face and into the gap to reduce swirl and minimize air leakage across the gap.
A turbomachine for moving air comprising:
- a shroud disposed about an axis, the shroud having a pair of opposing faces defining a gap therebetween, the opposing faces being disposed generally transversely with respect to the axis,
- a rotor assembly mounted for rotation about the axis, the rotor assembly having a plurality of blades, tips of the blades being coupled to an annular band, at least a portion of the annular band being disposed in said gap, and
- a plurality of bristles extending from each opposing face of the shroud, into the gap and toward the portion of the annular band to reduce swirl and minimize air leakage across the gap.
Dependencies are inferred from the claim text.