CENTRIFUGAL PUMP Russian patent published in 1995 - IPC

FIELD: fan engineering. SUBSTANCE: inlet part of the fan branch pipe is cylindrical. The shell is provided with the manifold at its inlet and mounted on the branch pipe by way of spokes to define a ring passageway. The passageway connects the space of the working wheel in the zone of the covering disk with the space of the housing. The branch pipe can be telescopic for changing its length within the shell collector. EFFECT: improved design. 2 cl, 2 dwg