The present invention relates to a liquid separation device for a compressor system, comprising a coarse separator, which has at least one separation surface and at least one mixture supply designed to supply an air-liquid mixture to the separation surface, wherein the mixture supply a mixture feed outlet which faces the separation surface and is arranged relative to the separation surface of the coarse separator such that a mixture flow impinging on the separator surface is guided substantially tangentially over at least one portion of the separation surface.