Centrifugal or mixed flow turbomachines
AssigneesEbara Corporation, Ebara Research Co., Ltd., University College London
InventorsMehrdad Zangeneh, Hideomi Harada, Akira Goto
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Abstract
An impeller in a turbomachine has blades designed such that a reduced static pressure difference .DELTA.Cp between a hub and a shroud on a suction surface of a blade has a tendency to remarkably decrease in the vicinity of an impeller exit as it approaches the impeller exit from an inlet.
Claims36
A turbomachine having an impeller with a plurality of blades supported by a hub on which said blades are circumferentially spaced and covered by a shroud surface which forms an outer boundary to flow of fluid in a flow passage defining a flow direction between two adjacent blades, said impeller having a configuration such that one of a reduced static pressure difference .DELTA.Cp and a relative Mach number difference .DELTA.M between said hub and said shroud surface on a suction surface of each said blade has a tendency to decrease to such a degree as to suppress effectively a meridional component of secondary flow between a location of non-dimensional meridional distance m=0 and a location of non-dimensional meridional distance m=1.0 as said non-dimensional meridional distance increases.
Dependencies are inferred from the claim text.