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US 2014/0369804 A1Published application
Variable bleed slot in centrifugal impeller
AssigneeUnited Technologies Corporation
InventorBenjamin E. Fishler
Life of this patent
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Abstract
The present disclosure relates to shroud bleed in centrifugal compressors. An air-limiting component 130 may be located adjacent to a shroud 120. The shroud 120 may have a primary bleed slot 210, and the air-limiting component 130 may have a secondary bleed slot 310. The primary bleed slot 210 and the secondary bleed slot 310 may overlap at an effective bleed slot location. The air-limiting component 130 may rotate relative to the shroud 120, which may change a streamwise location of the effective bleed slot.
Claims20
A system comprising:
- a shroud comprising a primary bleed slot;
- an air-limiting component comprising a secondary bleed slot positioned at an angle relative to the primary bleed slot, wherein the air-limiting component is disposed adjacent to the shroud.
A centrifugal compressor comprising:
- a shroud located adjacent to an impeller, the shroud comprising a plurality of primary bleed slots;
- an air-limiting component located adjacent to the shroud, the air-limiting component comprising a plurality of secondary bleed slots overlapping the plurality of primary bleed slots;
- a plurality of bearings located between the shroud and the air-limiting component;
- and
- an actuator configured to rotate the air-limiting component, wherein, in response to the actuator rotating the air-limiting component, an overlapping position of the plurality of primary bleed slots and the plurality of secondary bleed slots varies.
2 more elements
A method comprising:
- determining an optimal shroud bleed location in a centrifugal compressor;
- and
- rotating an air-limiting component relative to a shroud, such that a bleed slot in the air-limiting component overlaps a bleed slot in the shroud at the optimal shroud bleed location.
Dependencies are inferred from the claim text.