A compressor in the intake tractate of an internal combustion engine has a compressor chamber and a compressor wheel arranged in the compressor chamber. A drive unit with shaft is provided, wherein the compressor wheel is coupled to the shaft. An intermediate chamber separate from the compressor chamber is provided. A centrifugal separator is arranged in the intermediate chamber and coupled to the shaft. The intermediate chamber has an inlet for supplying separator gases and also has at least one connecting opening that connects the intermediate chamber to the compressor chamber.