JET Russian patent published in 1994 - IPC

FIELD: production processes. SUBSTANCE: length of tapered outlet portion of jet working chamber is equal to 0.2 to 0.3 of working chamber diameter. Diameter of central channel of insert is selected to range within 0.03 to 0.04 of insert diameter. It has tangential involute six-start channels inclined in relation to longitudinal plane at angle of 40 to 45 deg. Their inlet portions are connected in pairs by diametral channels of the same size. Cross sectional area of each involute channel is selected so that it is equal to 5 to 7 areas of cross section of central channel, diameter of which should be equal to diameter of central orifice of nozzle. Length of insert is selected to be from 0.35 to 0.45 of its diameter. Length of central orifice of nozzle is selected to be 0.5 to 1.0 of its diameter. Tangential involute channels of insert are rectangular with depth equaling to 0.4 to 0.6 of their width. Inlet portion of working chamber in front of insert is made in the form of reversed cone. Diameter of central channel of insert is selected from the range of 0.5 to 0.8 of diameter of central orifice of nozzle. EFFECT: improved quality of atomizing. 6 cl, 3 dwg