KOCHETOV MOBILE UNIT WITH TWO-PHASE FIRE SPRAY Russian patent published in 2016 - IPC B05B7/00 B05B1/02 A62C31/02 

FIELD: fire safety.

SUBSTANCE: invention relates to a fire extinguishing agents, particularly portable (knapsack). Mobile fire extinguishing unit with two-phase sprayer comprises a container with extinguishing liquid, which is mounted on backpack knapsack operator displacing fluid system type. System includes high-pressure cylinder with compressed gas, compressed gas feed line in tank gas chamber with shutoff valve and gas-pressure reducer, fluid sprayer installed on shaft with trigger valve mechanism. Sprayer made double-phase and is connected to tank by two pipes: first supply line to a supply nozzle sprayer and connected in series and coaxial with it confusor and a cylindrical nozzle, and second supply line - with annular chamber. Annular chamber performs tangential supply of liquid through coaxial with cylindrical nozzle, which is made in form of a cylindrical sleeve. Vortex circular chamber with a branch for supply of liquid is secured on a cylinder section of sleeve. Two rows of liquid supplying tangential channels are made on ends of circular chamber. In each row there are least three tangential channels connecting annular chamber with cylindrical cavity of mixing chamber of housing. To mixing chamber housing coaxially to round plate is located perpendicular to axis of vortex annular chamber and rigidly connected with housing cylindrical chamber in its end section. Perpendicular to round plate is attached a slotted nozzle, which is made combined and consists of two mutually perpendicular rectangular parallelepipeds with throttle through holes of rectangular section, connected to cavity of housing.

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

1 cl, 2 dwg