SPRINKLING FINELY-DIVIDING SPRAYER Russian patent published in 1998 - IPC

FIELD: fire extinguishing with water sprinkling sprayers. SUBSTANCE: sprayer has hollow cylindrical body with water supplying channel accommodating valve for forward motion and connected with thermal lock flask, spray injectors connected with body internal space and installed in several horizontal rows in body. Each spray injector has double coaxial channels to pass liquid and one inlet nozzle formed by partial crossing the side surface of double coaxial channels by body external conical recess. The lowest row of spray injectors is provided with double coaxial channels whose axes are located at acute angle to body vertical axis, and nozzle outlet beginning from this lower row of injectors is made with increasing flow area towards next rows. Installed in each row are three spray injectors in conical recesses of body and their axes from row to row are displaced through 60 deg. Flow area of supplying channel is larger than total flow area of spray injector outlet nozzles, but not more than by a factor of 2, and body conical recesses are made with angle of opening within 60-90 deg. EFFECT: provision of uniform flow of drops with diameter of 30-150 mcm at pressure of supplied water not is excess of 1 MPa and minimum time (20-40 s) taken for fire extinguishing. 6 cl, 1 dwg, 1 tbl