Patent ID: 8157716

Claim:
A centrifugal separator comprising: a bowl rotatable about an axis of rotation extending in a longitudinal direction of said bowl, a radial direction extending perpendicular to the longitudinal direction; a separation chamber in the bowl; a base provided at a rear longitudinal end of the bowl to define the separation chamber, said base comprising a first outlet opening defined in the radial direction at a first level by a weir, and said base defining a rear longitudinal area of the centrifugal separator; an outlet chamber communicating with the separation chamber through the first outlet opening; the outlet chamber being connected with an outlet chamber outlet opening, which opens at a second level below the first level into an exterior of the bowl in a second longitudinal area in front of the rear longitudinal area, the outlet chamber outlet opening being provided with an outlet nozzle having an outlet direction having a component generally opposite a direction of rotation of the bowl, and wherein an overflow inlet opening is present in the outlet chamber, the overflow inlet opening being placed at a third level between the first and the second level, and the overflow inlet opening communicating with an overflow outlet opening, which opens into the exterior of the bowl in the second longitudinal area.