Leaned centrifugal compressor airfoil diffuser

F - Mech Eng,Light,Heat,Weapons – 04 – D

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F04D 29/44 (2006.01)

Patent

CA 2618177

A low solidity vaned airfoil diffuser (2) for a centrifugal compressor wherein each blade has a lean angle (85) greater than zero and wherein the hub stagger angle (70) may be the same as or may be different from the shroud stagger angle (80) for each blade. Preferably the lean angle (85) is in a range from 5- 60 degrees, and the hub stagger angle (70) and the shroud stagger angle (80) is from 13 to 30 degrees. The diffuser can be employed in a centrifugal compressor used in an air separation plant.

La présente invention concerne un diffuseur de déflecteur d~air à ailettes de faible solidité (2) pour compresseur centrifuge, chaque ailette présentant un angle d~inclinaison (85) supérieur à zéro et l~angle de décalage de moyeu (70) pouvant être identique ou différent de l~angle de décalage de flasque (80) pour chaque ailette. De préférence, l~angle d~inclinaison (85) est compris entre 5 et 60 degrés et l~angle de décalage de moyeu (70) ainsi que l~angle de décalage de flasque (80) sont compris entre 5 et 30 degrés. Ledit diffuseur peut être employé dans un compresseur centrifuge utilisé dans une installation de séparation d~air.

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