SWIRL NOZZLE Russian patent published in 2018 - IPC B05B17/06 

FIELD: devices for spraying or atomizing liquids.

SUBSTANCE: invention relates to devices for liquids, solutions spraying. Swirl nozzle comprises a housing with a swirling chamber and a nozzle, the housing is in the form of a supply fitting with a central hole and rigidly connected thereto and a coaxial cylindrical sleeve with an internal thread and an expansion chamber coaxial to the housing. Coaxially with the body, a nozzle, in the form of an inverted cup, is connected to the sleeve by means of a thread, in the bottom of which there is a turbulent swirler of the liquid flow with at least two inclusions to the axis of the nozzle in the form of cylindrical openings, which are located in the end surface of the nozzle, where a central cylindrical throttle opening is also connected to the mixing chamber of the nozzle, in series connected to the diffuser outlet chamber, a divider is provided in the diffuser outlet chamber in the form of at least three spokes, each of which is fixed at one end to the outer surface of the diffuser outlet chamber perpendicular to the surface forming it, and at the other end – in the surface of the body of revolution, for example, a ball whose axis coincides with the axis of the diffuser outlet chamber, and the body of rotation itself is located in the lower part behind the cutoff of the diffuser outlet chamber, a diffuser is attached, coaxial to the diffuser chamber, to the end surface of a cylindrical sleeve coaxial with the housing, and the cutoff surface of this diffusor lies in a plane below the surface of the body of revolution of the divider, and the divider is made in the form of two spokes, each of which is fixed at one end to the outer surface of the diffuser outlet chamber, perpendicular to the surface forming it, and at the other end – to the axis on which a body of revolution in a form of a ball, the center of which lies on the axis of the diffuser outlet chamber, is mounted, while the surface of the body of revolution is made in the form of a ball mounted on the axis, is rotatable and is perforated, to the surface of the body of revolution made in the form of a ball mounted on the axis, rotatable elements are installed that make it rotate, for example, in the form of segments of helical blades, on the inner surface of the central cylindrical throttle opening located in the end surface of the nozzle, screw grooves are provided for performing additional twisting of the liquid flow, in the body of revolution, whose axis coincides with the axis of the diffuser outlet chamber, and the body of rotation itself is located in the lower part behind the cutoff of the diffuser outlet chamber, resonant recesses are made in the form of a cylindrical surface of different diameters and lengths, performing the functions of Helmholtz resonators, their dimensions are determined by the necessary pulsation frequency of the liquid flow to increase the fineness of the sprayed flame. To the diffuser, whose axis coincides with the axis of the diffuser outlet chamber, triangular section ring is coaxially attached at its output, near cutoff, with resonant plate, the outlet opening of which coincides with the outlet opening of the triangular section ring, and cylindrical shell 20 with a perforated disk at the outlet is attached to the resonant plate coaxial with its outlet opening, while the resonant recesses having the form of a cylindrical surface of different diameters and lengths and perform the functions of Helmholtz resonators, the dimensions of which are determined by the necessary pulsation frequency of the liquid flow to increase the fineness of the sprayed flame, are made: in the ring of the triangular section at an angle of 45° to the axis of the nozzle, and in the resonant plate – perpendicular to the axis of the nozzle.

EFFECT: increasing spraying efficiency due to spray cone increasing.

1 cl, 2 dwg