Patent ID: 7726453
Filing Date: 2010-06-01
Classification: F04C,F16D

Abstract:
1. A device for controlling the operation of a vacuum pump, comprising: a blade pump comprising a rotor having at least one blade, a rotary body housing said rotor, a pumping chamber defined by said rotary body, said pumping chamber having no fluid outlet other than by leakage at seals of said pumping chamber, one of the rotor and rotary body being adapted to connect to an input shaft to the vacuum pump and the other of the rotor and rotary body being adapted to connect to a rotor of the vacuum pump; and a liquid supply device adapted to supply a liquid to said pumping chamber, said liquid supply device being controllable between a first state in which said liquid supply device supplies liquid to the pumping chamber in an amount sufficient to fill the pumping chamber and a second state in which said liquid supply device supplies liquid to the pumping chamber in an amount insufficient to fill the pumping chamber, response to a determination of whether the vacuum pump is to be actuated.