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US 10,851,801 B2Granted
Centrifugal compressor system and diffuser
AssigneeIngersoll-Rand Industrial U.S., Inc.
InventorsMikhail M. Grigoriev, William T. Tierney
Life of this patent
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Abstract
A centrifugal compressor system includes a centrifugal impeller a shroud in cooperative engagement with the impeller; and a diffuser. The diffuser has a hub surface; a shroud surface; a plurality of diffuser vanes extending between the hub surface and the shroud surface; and a common splitter ring disposed between the hub surface and the shroud surface and intersecting each of the diffuser vanes along a span of each of the diffuser vanes.
Claims20
A centrifugal compressor system, comprising
- a single-sided centrifugal impeller having a front side that includes a plurality of compressor blades and a back side that lacks a plurality of compressor blades;
- a shroud in cooperative engagement with the impeller;
- and
- a diffuser having a hub surface adjacent to the back side of the single-sided centrifugal impeller;
- a shroud surface adjacent to the front side of the single-sided centrifugal impeller;
- a plurality of diffuser vanes extending between the hub surface and the shroud surface;
- and a common splitter ring disposed between the hub surface and the shroud surface and intersecting each of the diffuser vanes at a point of the diffuser vanes located between a hub surface end of the diffuser vanes and a shroud surface end of diffuser vanes such that a flow into the diffuser is split by the common splitter ring into a first portion and a second portion;
- wherein the common splitter ring is structured to increase compression efficiency by reducing motion of flow between the hub surface and shroud surface, the compression efficiency being increased relative to a centrifugal compressor system that lacks the common splitter ring.
5 more elements
A centrifugal compressor system, comprising:
- a single-sided centrifugal impeller having a front side that includes a plurality of compressor blades and a back side that lacks a plurality of compressor blades,
- a hub surface disposed on the back side of the single-sided centrifugal impeller;
- a shroud surface disposed on the front side of the centrifugal impeller;
- a common splitter ring disposed in a diffuser space of the centrifugal compressor system between the hub surface and the shroud surface and structured to receive an out flow from the single-sided centrifugal impeller during operation of the single-sided centrifugal impeller;
- and
- a plurality of diffuser vanes extending between the hub surface and the shroud surface and where the common splitter ring intersects each of the plurality of diffuser vanes at a point of each of the plurality of diffuser vanes between the hub surface and the shroud surface such that a flow into the diffuser space is split by the common splitter ring into a first portion and a second portion;
- wherein pressure recovery is increased in the diffuser space relative to a configuration of the centrifugal compressor system that lacks the common splitter ring.
4 more elements
Dependencies are inferred from the claim text.