IMPELLER OF CENTRIFUGAL COMPRESSOR Russian patent published in 2014 - IPC F04D29/28 

FIELD: machine building.

SUBSTANCE: invention relates to compressor building, in particular, to design of impellers. The impeller of the centrifugal compressor comprises the main disc with blades; a cover disc fixed on end surfaces of the blades, the inner surface of which is made as conical with a rectilinear generatrix, and a blade-to-blade channel formed by inner surfaces of the main and cover discs. The inner conical surface of the cover disc is made as conical with an angle near the top, which is equal to 180°-α, the inner surface of the main disc is also made as conical with an angle near the top equal to 180°-α, which provides for meridian symmetry of the gas flow and increased external diameter of the impeller from D₂ to D₃, which provides for development of a mobile vaneless diffuser on the impeller.

EFFECT: invention is aimed at increasing energy characteristics of an impeller: flow rate, head, efficiency, reduced pulsations and turbulence at the output of the impeller.

3 dwg