MOBILE FIRE-EXTINGUISHING INSTALLATION Russian patent published in 2013 - IPC A62C15/00 

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to portable backpack fire fighting means. The mobile fire-extinguishing installation comprises a container with liquid, a pressurised liquid supply system, a liquid flow swirler with guide elements, a liquid sprayer connected through the supply pipeline to the container. The sprayer housing is designed in the form of a feeding fitting with a central opening, and rigidly connected to it and a coaxial cylindrical sleeve. On the lower part of the housing a nozzle is connected through the sleeve. The nozzle is made in the form of a centrifugal liquid flow swirler with tangential inlets in the form of cylindrical openings. The sleeve is a part of the nozzle and is mounted coaxially and in alignment with respect to the centrifugal swirler in the end surface of which a cylindrical orifice is made. The centrifugal swirler is mounted in a cylindrical housing chamber to form an annular cylindrical liquid supply chamber and is connected to the diffuser outlet chamber. The tangential inlets are made in the form of channels which are located to the inner surface of the cylindrical insert. The confusor is coaxially attached to the sleeve, the inner cavity of which through the openings, formed on its side surface, connect its cavity to the outside air. At the outlet of the confusor the choke is fixed in the form of a cylindrical shell, which increases the flow long-range capability of the whole unit.

EFFECT: increased efficiency of fire extinguishing due to fine dispersion of droplets in the flow and range of stream of gas-droplet flow.

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