Method of controlling the function of a centrifugal pump and vacuum pump combination, and a gas-separating centrifugal pump

摘要

The present invention relates to a method of controlling the function of a centrifugal pump and vacuum pump combination, and a gas-separating centrifugal pump. The method according to the invention is characterized in that a member restricting the flow controls the gas flow in the gas outlet duct (26) between the centrifugal pump and vacuum pump. The gas-separating centrifugal pump has the flow-restricting control element (100) that is arranged in the gas outlet duct (26).