Axial flow machine with bladed rotor - incorporates flow control zone with step having dia. change

摘要

The axial flow machine has a hub with blades arranged as an impeller inside a housing. The housing (28) has a zone in the region of the impeller and/or axially spaced from the immediate vicinity of the impeller, which varies the through flow surface. The zone consists of a step (30) with a dia. change axially positioned in the suction direction. The step itself is axially displaceable. USE/ADVANTAGE - Axial flow machine with bladed rotor is designed so that blade tip eddy is reduced, has simple construction and gives high degree of efficiency.