Abstract: Apparatus to purify air, which consists of a recipient (2) with water in its interior, in which is introduced, submerged in its interior an end, perforated section (5) of the smoke circulation conduct (6), which is pushed by a turbine, and sucked in by a smoke collector (7) to collect the smoke, with transversal and parallel axes (12) in its interior, with blades (13) which are turned with the aid of a transmission, consisting of sprockets (14) and a chain (15) connected to the axis sprocket (16) of the motor outlet (17).