| 摘要 |
FIELD: fire safety.SUBSTANCE: mobile fire extinguisher comprising a portable extinguishing means, which is a fire extinguisher of rechargeable type, filled with non-flammable liquid, with a lock and release device of manual type and a liquid supply system with a foam generator additionally comprises a gas supply system which comprises a microswitch mounted on the lock and release device so that when starting the fire extinguisher the compact compressor is activated simultaneously, powered by a portable battery unit, and the foam generator comprises a housing made in the form of a cylindrical cup with a horizontal axis coaxial to the axis of the nozzle and the attachment means of the nozzle to the pipeline for supply of water or foam solution, and on the side of the foam output the housing is coaxially attached to the confuser, and at the junction of the housing and the confuser a net or a pack of nets in the cage is mounted, and for easy carrying and use of the foam generator it is provided with a transverse beam and longitudinal handles between which there is a cage with a fitting of supplying compressed air from the compact compressor, closing the openings for supplying compressed air into the housing, which enhances the foam expansion, and the nozzle of the foam generator is attached to the housing by means of variable length elements, to the bottom of the housing by the plates, with which the nozzle is mounted at a predetermined distance relative to the surface of the net, depending on the desired expansion and long-range capability of the jet, and the longitudinal handle is able to be attached to the cylindrical surface of the housing along its generating line at locations corresponding to the changed length of the fastening elements, the nozzle comprises a hollow cylindrical housing connected to the diffuser, in which the orifices are made, the hollow housing consists of a cylindrical part with an external thread for connection to the fitting for supplying liquid and two successively connected and coaxial with it hollow cylinder-conic belts, and coaxially to the housing, in its lower part, the diffuser is fastened made in the form of a cup, in the bottom of which the horizontal and inclined orifices are made at an angle 45° to the axis of the diffuser, and in the cylindrical belt of the housing at least one row of radial openings is made, which axes lie in a plane perpendicular to the axis of the housing. The number of openings in each row is equal to at least three. The housing and the diffuser form between each other several coaxial internal chambers: cylindrical and the conical chamber located between them. One of the cylindrical chambers is used for the sprayed liquid supply, and the conical and cylindrical chambers are the expansion chambers.EFFECT: improving efficiency of extinguishing fires of various classes through the use of high-expansion air filled foam.3 dwg |
