Cyclone separator and compressor

The utility model relates to a cyclone separator, a compressor and a method for separating liquid from liquid and gas flow. A cyclonic separator (1) for separating liquid from a gas and liquid stream(8), the cyclonic separator comprising a housing having a generally tubular inner wall (2), an inlet (3) for the stream being provided in the housing to at least partially tangentially carry the stream onto the inner wall, and an outlet (4) provided at the top of the housing, wherein the housing has an inlet and an outlet, such that a vortex (5) is formed between the inlet and the outlet during operation, and wherein the liquid (6) impinges on the inner wall due to centrifugal force for discharge, characterized in that the housing has a substantially tubular auxiliary wall (7) at least in theregion above the inlet, the outer side of which is spaced apart from the inner wall and faces the inner wall, the vortex is at least partially constrained by the inner side of the auxiliary wall during operation to reduce cont