Patent ID: 8613605

Claim:
A centrifugal pump comprising: a pump unit comprising a volute and an impeller disposed in a chamber of the volute; and a drive unit comprising a stator and a rotor including a shaft; wherein the volute comprises an inlet and an outlet in communication with the chamber; the shaft of the drive unit extends into the chamber of the volute and the impeller is attached to and driven by the shaft; and the volute further comprises a transition part communicating the outlet with the chamber, an axis of the transition part being angled to an axis of the outlet, the transition part being arranged between the outlet and an exit aperture of the chamber; wherein in use the pump is mounted such that the axis of wherein in use the pump is mounted such that the axis of the outlet is located below a center of the impeller for reducing noise caused by fluid contained in the outlet preventing air in the volute chamber from escaping via the outlet.