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Controlled centrifuge systems

  • US 20090105059A1
  • Filed: 08/29/2008
  • Published: 04/23/2009
  • Est. Priority Date: 11/06/2002
  • Status: Active Grant
First Claim
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1. A method for controlling a centrifuge system, the centrifuge system includinga bowl,a bowl motor system for rotating the bowl, rotation of the bowl resulting in a G-force applied to the bowl,a bowl variable frequency drive for driving the bowl motor,a conveyor rotatable within the bowl,a conveyor motor for rotating the conveyor,a conveyor variable frequency drive for driving the conveyor motor,a pump for pumping material to be centrifuged in the bowl,a pump motor for driving the pump,a pump variable frequency drive for driving the pump motor,a control system for controlling the bowl variable frequency drive, the conveyor variable frequency drive, and the pump variable frequency drive, the control system including computer apparatus,the computer apparatus configured to control the centrifuge system in a G-force differential control mode, the computer apparatus programmed with a pre-set maximum G-force to be applied to the bowl,the G-force differential control mode includingcontrolling the G-force on the bowl as the bowl is rotated by the bowl motor system driven by the bowl VFD so that the G-force on the bowl does not exceed the pre-set maximum G-force, andsaid controlling of the G-force accomplished by one of adjusting the G-force on the bowl and adjusting the speed of the bowl.

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