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    • 9. 发明申请
    • HANDHELD FIRE EXTINGUISHING EQUIPMENT FOR THE FORMATION OF A TWO-PHASE BUBBLE-STRUCTURED STREAM AND THE METHOD OF EXTINGUISHING
    • WO2023056994A1
    • 2023-04-13
    • PCT/CZ2022/000026
    • 2022-06-14
    • JETEX INNOVATION S.R.O.
    • LEPESHINSKY, Igor AlexandrovichSNOZA, RadimMIGACHEV, Alexander AnatolyevichZOTIKOVA, Polina Viktorovna
    • A62C31/12A62C5/00A62C5/02B01F25/312A62C5/008B01F23/235B01F25/3121B01F25/31242B01F25/4521
    • Small and light handheld fire extinguishing equipment with an accumulator battery (4) and a high-pressure water pump (2). The fire extinguishing equipment has a firefighting nozzle (1) suctioning on a regulated basis the outside atmospheric air through first suction orifices (14), using a regulator (13) into a mixing chamber (12), and through second suction orifices (17) into an adapter (9). The mixing chamber (12) is connected on one end to a conical inlet nozzle (19) for the supply of pressurized water from the high-pressure water pump (2), and on the opposite end to an outlet channel (20), linked to an outlet chamber (22), fitted with an outlet partition (23) with outlet orifices (24). The outlet chamber (22) is linked to the outlet channel (20), which has its variable sections symmetrically rotationally aligned to the longitudinal axis (21) of the firefighting nozzle(1). The sections of the outlet channel (20) are selected from a group, including the shapes of a truncated cone, composed truncated cones, rotating ellipsoid, rotating paraboloid and rotating hyperboloid. The two-phase flow of air and water behind the mixing chamber (12) on the inlet into the outlet channel (20) has a volume structure of air with drops of water, where the volume concentration of air is higher than 0.523; the two-phase bubble-structured flow on the outlet from the widened end part of the outlet channel (20) has a volume structure of droplets of water and bubbles of air, where the volume concentration of air is lower than 0.523. The pressure of pressurized water, inletting into the inlet nozzle (19), is 2 MPa. The extinguishing stream on the outlet (7) of adapter (9) of the fire extinguishing equipment has an outlet speed of up to 36 m.s--1 and a reach up to 25 m. The high-pressure water pump (2) at 10 000 revolutions per minute, has a displacement on the outlet (26) from the pump (2) of 1 liter of pressurized water per 1 second at the pressure of 2 MPa and power of the electric engine (3) of 3,5 kW and voltage of 60 V. · this pressurized water suctions on a regulated basis the ambient atmospheric air without pressure through the first suction orifices (14) into the mixing chamber (12), in which air and water get mixed into the mixture of a two- phase flow of air and drops of water; • the obtained stream of air and drops of water behind the mixing chamber (12) gets reformed into a two-phase bubble-structured flow of droplets of water and bubbles of air by passing through the indent sections of outlet elements of the firefighting nozzle(1); where · into the outlet adapter (9) outside air is suctioned on a regulated basis through the outlet orifices (24) of the outlet partition (23); and · the generated two-phase flow of a turbulent character and bubble structure of dispersed drops of sizes 10 to 300 pm comes out of the outlet (7) from the firefighting nozzle(1) of the fire extinguishing equipment to the place of fire at the speed of up to 36 m.s-1 and maximum reach up to 25 m. The high-pressure water pump (2) at 10 000 revolutions per minute, has a displacement on the outlet (26) from the pump (2) of 1 liter of pressurized water per 1 second at the pressure of 2 MPa and power of the electric engine (3) of 3,5 kW and voltage of 60 V.