Abstract: A centrifugal pump includes a motor with a shaft and an adapter mounted to the motor. A volute housing mounted to the adapter defines a volute chamber. The adapter and volute housing define a pumping chamber therebetween. The volute housing includes an impeller inlet wall having an orifice. An impeller is disposed within the pumping chamber and a hub of the impeller is mounted on the shaft while a shroud portion coincides with the impeller orifice. An inducer is coupled to the shaft and extends into the inlet dogleg. A first portion of the inducer resides within the shroud portion of the impeller and a second portion of the inducer resides within the inlet orifice. The inducer includes helical blades whereby, upon rotation of the shaft, a fluid within the inlet dogleg is acted upon by the helical blades of the inducer before the fluid enters the impeller shroud portion.

Abstract: The present invention relates to a fluid pump having an improved performance. The pump comprises an impeller, volute housing, inner housing geometry, and an adapter. The impeller is configured to generate fluid flow velocity. The volute housing is configured to improve fluid pump performance while reducing power consumption, the volute housing comprises the inner housing geometry. The inner housing geometry is configured to convert the fluid flow velocity that has been generated into pressure. The adapter is designed to protect the unconnected end of the drive shaft and reduce the negative effects of shaft deflection. The adapter also has a structural rib geometry which is configured to provide superior structural integrity at a minimal mass.