Ventilation nozzle for fluids

Claim 1

A ventilation nozzle for fluid, especially for ventilating and atomizing wort and yeast, having a fluid channel, which is tapered in flow direction, and comprising a gas supply line for adding a gas into the fluid channel and an expansion chamber which is connected to the taper in flow direction, characterized in that the fluid channel (1) is formed of two tube sections (4,6) which engage each other in such a telescopic manner that the overlapping portions of the tube sections (4,6) limit an annular chamber (9) formed by circumferential recesses provided on the inner surface of one of the tube sections (4) and on the outer surface of the other tube section (6), and which is sealed with respect to the fluid channel on (1) one hand by means of seals (12, 15) at the frontal ends of the tube sections (4,6) facing each other and with respect to the environment on the other hand, that the portion of the tube section (6) separating the annular channel (9) from the fluid channel (1) is provided with gas passage apertures (17) with the gas supply line (16) opening into the annual channel (9); and that the two tube sections (4,6) are connected to each other by radially outwardly protruding flanges (5,7) and by fixing screws (8) distributed over their circumference, with the flange (5) of the tube section (4) sealing the annular channel (9) to the outside mounted at its frontal end.