Patent ID: 8100630
Filing Date: 2012-01-24
Classification: F01D,F02C,F02K,F05D

Abstract:
1. A fluid flow machine, comprising: at least one casing; at least one rotor drum rotatable about a machine axis; an annulus duct formed between the casing and the rotor drum; at least one annular flow divider dividing the annulus duct into an outer annular duct and an inner annular duct; a plurality of outer rotor blades positioned in the outer annular duct and a plurality of inner rotor blades positioned in the inner annular duct, wherein, the outer rotor blades positioned in the outer annular duct are rotatable at a different speed than the inner rotor blades positioned in the inner annular duct; wherein the inner and outer rotor blades partly overlap in an axial direction.