Separator for a gaseous fluid

A separator for a gaseous fluid adapted to separate liquid or solid pollutants entrained by a flow of the gaseous fluid, the separator comprising:

• a protective casing comprising an inlet port and an outlet port, wherein the inlet port is hollowed in a vertical wall of the protective casing;
• an upper outlet disk and a lower discharge disk arranged inside the protective casing, wherein the upper outlet disk comprises a central through opening at the outlet port, the lower discharge disk comprises multiple first discharge ports and multiple second discharge ports, the first multiplicity of discharge ports are hollowed inside the lower discharge disk, and the second discharge ports are hollowed on an annular edge of the lower discharge disk;
• and
• a separator device arranged inside the protective casing between the upper outlet disk and the lower discharge disk, wherein the upper outlet disk is separated by an upper space from the separator device,
• wherein the inlet port is adapted to let the flow of the gaseous fluid pass into the upper space, and
• wherein the separator device comprises vertical walls wound around a vertical longitudinal geometric axis leaving a central longitudinal space therein so as to form at least one spiral that comprises multiple turns spaced from each other by a predefined pitch and forms a conduit comprising a rectangular longitudinal section in which a short side of the longitudinal section is a transverse distance between two of the vertical walls which are adjacent and a long side of the longitudinal section is a height of the vertical walls.