Patent ID: 7704300

Claim:
A device for cleaning of a gas containing particulate impurities, the device being arranged to be mounted to a combustion engine for receiving and cleaning gas from a crankcase of the combustion engine; wherein the device includes a main separator having an inlet for the gas, an outlet for the gas and a rotating member which is arranged between the inlet and the outlet and includes a rotor spindle and a number of rotating separation discs attached to the rotor spindle wherein the rotating member is adapted to bring the gas to rotate for separating by means of centrifugal forces a main amount of the particulate impurities from the gas, wherein a remaining amount of the particulate impurities remains in the gas, and wherein the device includes an additional separator which is adapted to separate substantially the remaining amount, wherein the additional separator includes an electrostatic filter; wherein the electrostatic filter includes a first pole element, a second pole element, and a voltage unit, which provides an electric potential difference between the first pole element and the second pole element in such a way that the first pole element charges the particulate impurities in the gas with an electric potential in relation to the second pole element and that the second pole element attracts the charged particulate impurities for separating them from the gas.