SPRINKLER Russian patent published in 2018 - IPC B05B1/00 A62C31/02 

FIELD: fire safety.

SUBSTANCE: invention relates to firefighting equipment. Sprinkler contains a body in the form of a central bushing with an external hexagonal and an internal cylindrical surfaces. Internal thread is made on the two end faces of the central bushing. One of the end faces is axially symmetrically fastened to the inlet branch pipe by means of a lock nut, and to the other - a spraying element made in the form of a sleeve which inner diameter is equal to the inside diameter of the supply pipe. Socket, which is part of a spherical surface bounded by the inner and outer hemispheres, and having a thickness "s", is fixed to the sleeve by means of arcs arranged along a conical surface. Cross section of the arcs located along the conical surface and connecting the sleeve to the socket is made by profile, screw, to increase the effect of finely dispersed spraying of the foamer solution. Centre of hemisphere lies on line connecting axis of central sleeve and axis of feed pipe. On the spherical surface, from the outside, at least three radial grooves are made, which axes are located on radial lines with respect to the hemisphere, and in the peripheral part of the hemisphere, at least three chokes are formed, the centers of which lie in a plane parallel to the diametral plane of the hemisphere, which is perpendicular to the axis of the inlet nozzle, axisymmetrically to the spraying element. In the cavity of the central bushing there is a glass bulb. Flask is fixed between two poppet valves. In the upper part, it rests against the poppet valve with three spherical arcs, overlapping the cross-section of the inlet branch pipe, and in the lower part it rests against the poppet valve that covers the cross section of the bushing. Poppet valves are made with a high perforation ratio. In the side surface of the central sleeve with the outer hexagonal and internal cylindrical surfaces, made at least, towards the outlet, three inclined throttling holes, whose axes intersect at a point lying on the axis of the central hub, and constitute an acute angle with this axis in the plane of the drawing.

EFFECT: invention makes it possible to increase the efficiency of fire extinguishing.

1 cl, 1 dwg