ventilation box

Abstract

Ventilation box with a housing (1) comprising an air inlet chamber (3) and an air outlet chamber (6), wherein the air outlet chamber (Ü6) has an air outlet surface (12) which is or can be provided with a perforation, and the air outlet chamber (6) has a region whose flow cross-section extending perpendicular to the air outlet surface (12) narrows in the outlet flow direction (10), preferably continuously, and which is bounded by an inclined wall (7) which forms an angle of 5-20° with the air outlet surface (12), wherein the air outlet chamber (6) has at least one discharge opening (9), preferably a series of discharge openings (9), adjacent to the inclined wall, with which a partial volume flow can be discharged from the air outlet chamber (6) in the outlet flow direction (10).