Pneumatic atomizing nozzle

A pneumatic atomizing nozzle (10) comprising a nozzle body (11) that defines a flow space (21);

• a gas channel (14) for supplying a gas, said gas channel (14) terminating in the flow space (21);
• a liquid channel (27) for supplying a liquid, said liquid channel (27) having at least one outlet opening (38) through which the liquid is discharged into the flow space (21) in order to be charged with gas from the gas channel (14) and form a liquid film (41) in a flow direction (S) in the flow space (21);
• and
• said at least one outlet opening (38) defining an outlet direction (A) out of the liquid channel (27) for the liquid, said outlet direction (A) being opposite to the flow direction (S) of the liquid film (41) in the flow space (21).

A pneumatic atomizing nozzle (10) comprising

• a nozzle body (11) that defines a flow space (21);
• a gas channel (14) for supplying a gas, said gas channel (14) terminating in the flow space (21);
• a liquid channel (27) for supplying a liquid, said liquid channel (27) having at least one outlet opening (38) through which the liquid is discharged into the flow space (21) in an outlet direction (A) in order to be charged with gas from said gas channel (14) and form a liquid film (41) in the flow space (21);
• and
• said liquid channel (27) and the at least one outlet opening (38) of the liquid channel (27) extend in a manner such that when they project onto a plane that extends transversely through the flow space (21) and perpendicularly to the outlet direction (A), a line is formed that is curved, wound or meandering, at least in some sections.

A method (50) for operating a pneumatic atomizing nozzle comprising the steps:

• supplying (51) liquid to a liquid channel (27);
• ejecting (52) the liquid from the liquid channel (27) into a flow space (21) in a liquid outlet direction (A);
• supplying (53) gas to a flow space (21) for which a gas flow direction (S) has been defined, said gas flow direction being different from the liquid outlet direction (A);
• charging (54) the liquid entering the flow space (21) with the gas in such a manner that the liquid is deflected and a liquid film (41) is formed, said liquid film flowing in a flow direction (S) opposite the liquid outlet direction (A) to a nozzle outlet (17);
• and
• dispensing (55) the liquid through the nozzle outlet (17).