SPRINKLING NOZZLE FOR FIRE EXTINGUISHING UNITS WITH HIGH PRESSURE FINE SPRAYED LIQUID Russian patent published in 2015 - IPC A62C31/02 B05B1/14 

FIELD: fire safety.

SUBSTANCE: invention relates to the field of fire-prevention equipment, namely to high performance fire extinguishing systems with high pressure finely sprayed water, and can be used for suppression or localisation of fire in industrial and office buildings and rooms where processing equipment is located. The working part of the sprinkling nozzle has two conic sections. One of sections is designed as a truncated cone with an angle from 40° to 120° with the removable nozzle inserts with outlets placed on it. The second conical section is placed on the face wall of the sprinkling nozzle the top of which faces towards the base of the truncated cone. The removable nozzle insert has the cylindrical housing with the outlet in the center of the face wall in which the stepped hollow cylinder and the liquid flow twisting chamber are located. The high pressure liquid supply chamber is placed in the stepped cylinder and is interconnected with the central liquid supply chamber placed in the union located in cylindrical part of the housing. Diameter of the base of the stepped hollow cylinder conforms to diameter of the internal cavity of the nozzle insert housing. The second part of the stepped cylinder is implemented with a smaller diameter, it bears on itself holes and two cuts which are interconnected with the end face wall for supply of liquid into the liquid flow twisting chamber. The liquid flow twisting chamber of the nozzle insert is formed by an internal conic face wall of the housing of a nozzle insert and a face wall of the step cylinder. The central liquid flow twisting chamber is formed by the internal face wall of the spray housing and the cylindrical cavity implemented on the end face wall of the union. The cavity walls are fitted with the grooves implemented with identical shift with reference to the centre of the cylindrical cavity.

EFFECT: obtaining of uniform spraying and distribution in the volume of fire extinguishing substance, and also expansion of arsenal of technical fire extinguishing facilities.

3 cl, 4 dwg