Ventilation system, room, confined space and building equipped with such a system, and associated method

A ventilation system (1) for a room (2) or a confined space, said ventilation system (1) comprising at least:

• a blowing device (7) for blowing a gas into said room (2) or said confined space, and
• a suction device (8) for drawing out the gas contained in said room (2) or said confined space,
• characterized in that the blowing device (7) and the suction device (8) are placed remote from each other, the suction device (8) comprising at least one suction pipe extending substantially in a longitudinal direction placed substantially vertically, said suction pipe being provided with a plurality of suction mouths (9, 10, 11) distributed one below the other in a substantially vertical direction, the blowing device (7) comprising at least one blowing pipe extending substantially along a longitudinal direction, placed substantially vertically, said blowing pipe being provided with a plurality of blowing mouths (12, 13, 14) distributed vertically one above the other, said ventilation system (1) being also characterized in that said suction mouths (9, 10, 11) are distributed over said suction pipe in such a way as to provide a radial suction of the gas from the room (2) or the confined space and/or in that said blowing mouths (12, 13, 14) are distributed over said blowing pipe (7) in such a way as to provide the gas emitted therefrom with a radial distribution, said ventilation system (1) further comprising an intermediate pipe (19) connecting said blowing (7) and suction (8) devices to each other, in such a way that the gas in the room (2) or the confined space is drawn out by said suction device (8) then sent back at least in part to said blowing device (7) via said intermediate pipe (19).