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US 4,900,225 AGranted
Centrifugal compressor having hybrid diffuser and excess area diffusing volute
AssigneeUnion Carbide Corporation
InventorsJames B. Wulf, Timothy D. Craig, Alfred P. Evans, Ross H. Sentz
Life of this patent
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Abstract
A centrifugal compressor having a two section diffuser which has a tapered section having a constant diffusing area along its radial length, and a straight section having an increasing diffusing area along its radial length, and a diffusing volute having a throat area significantly larger than conventional designs.
Claims6
A centrifugal compressor comprising:
- (A) a rotatable shaft;
- (B) an impeller wheel mounted on the shaft;
- (C) a diffuser extending radially from a diffuser entrance at the impeller wheel to a diffuser exit at a volute, said diffuser having a tapered section extending from the diffuser entrance to an intermediate point and a straight section extending from the intermediate point to the diffuser exit, said tapered section having a constant diffusing area along its radial length and said straight section having an increasing diffusing area along its radial length;
- and
- (D) a volute throat area within the range of from 70 to 90 percent of the area of the diffuser exit.
2 more elements
Dependencies are inferred from the claim text.