FIELD: removal of gas, air or smoke. SUBSTANCE: proposed device is provided with vortex chamber with at least one supply aperture and at least two suction branch pipes connected with vortex chamber and at least one evacuation system made in form of collector as part of housing; vortex chamber is connected with collector by means of suction branch pipes; during operation, steady-state vortex flow is formed in vortex chamber between suction branch pipes; outer surfaces of collectors partially performs function of guide surfaces. In area of collectors, housing and vortex chamber have S- shaped form in section for aerodynamic optimization. EFFECT: enhanced aerodynamic optimization of unit. 20 cl, 6 dwg
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