SPRAYING HEAD HAVING BORED NOZZLES Russian patent published in 2005 - IPC

FIELD: spraying devices to create liquid fog preferably used to extinguish fires.

SUBSTANCE: spraying head comprises body 1'''', inlet orifice 2''' and channel 7'''''a, 7'''' leading to at least one nozzle 6''''a having through orifice 3''''a. Through orifice 3''''a comprises the first bore 4''''a and the second bore 5''''a. The first bore has the first diameter, the second one has the second diameter, wherein the first diameter is 0.1 - 0.9 of the second one. The first bore has length equal to 0.25 - 15 diameters of the first bore. The second bore has length approximately equal to 1 - 15 diameters of the second bore. The first and the second bores extend substantially along single line. Body 1'''' comprises main channel 7''''. Nozzle 6''''a extends from main channel 7'''' at angle θ to it so that medium flow along the first bore 4''''a and the second bore 5''''a passes at an angle to main flow moving through main channel. Method of nozzle production of blank is also disclosed.

EFFECT: increased efficiency, simplified structure, provision of liquid discharge in fog form at low pressure and high angular momentum at high pressure.

30 cl, 9 dwg