Classifications

• • A—HUMAN NECESSITIES
  • A62—LIFE-SAVING; FIRE-FIGHTING
  • A62C—FIRE-FIGHTING
  • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
  • A62C3/006—Fire prevention, containment or extinguishing specially adapted for particular objects or places for kitchens or stoves
• • A—HUMAN NECESSITIES
  • A62—LIFE-SAVING; FIRE-FIGHTING
  • A62C—FIRE-FIGHTING
  • A62C31/00—Delivery of fire-extinguishing material
  • A62C31/005—Delivery of fire-extinguishing material using nozzles
• • A—HUMAN NECESSITIES
  • A62—LIFE-SAVING; FIRE-FIGHTING
  • A62C—FIRE-FIGHTING
  • A62C99/00—Subject matter not provided for in other groups of this subclass
  • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
  • A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water

Definitions

• the K-factor of the first spray mist outlet is higher than the K-factors of the second spray mist outlets. This represents a particular advantage recognized by the inventors. Due to the higher K-factor of the first spray mist outlet, the first spray mist outlet has a greater throw distance than the second spray mist outlets. In return, the second spray mist outlets have finer atomization characteristics.
• the first partial flow T 1 is, as shown in particular in Figure 7c
• the fluid is conveyed back toward the spray mist outlet 24/25 through several vortex channels 85 arranged eccentrically and radially parallel relative to the longitudinal axis L.
• the off-center arrangement of the vortex channels 85 generates a vortex flow in the volume between the swirl body 51 and the base body 49 upstream of the spray mist outlet.
• the two partial flows T 1 and T 2 are recombined and expelled together through the spray mist outlet 24/25.
• the vortex channels 85 are preferably all offset by the same offset V to a respective radial.
• the vortex channels 85 are inclined by an angle ⁇ relative to the outlet-side, second end face 83 of the swirl body 51.
• the vortex channels 85 or the groove bases of the vortex channels 85 are aligned parallel to a seat surface 77 of the swirl body 51.
• the vortex channels 85 are provided with a width B in the swirl body 51 and are additionally pivoted to the longitudinal axis L by an angle ⁇
• Embodiment 4 Firefighting system (100) according to embodiment 2 or 3, wherein the spray outlets (24, 25) of the hood spray nozzle (11) are aligned in one plane (E 2 ), preferably horizontally.
• Embodiment 5 Firefighting system (100) according to one of the preceding embodiments, wherein the hood spray nozzle (11) has a first spray outlet (24) aligned perpendicularly to the opposite side wall (19) and two second spray outlets (25) each aligned at a predetermined angle ( ⁇ ) to the first spray outlet (24).
• Embodiment 6 Firefighting system (100) according to embodiment 5, wherein the K-factor of the first spray mist outlet (24) is higher than the K-factors of the second spray mist outlets (25).
• Embodiment 7 Firefighting system (100) according to one of embodiments 5 or 6, wherein the K-factor of the first spray outlet (24) of the hood spray nozzle (11) is in a range of 0.6 to 0.9.
• Embodiment 8 Firefighting system (100) according to one of embodiments 5 to 7, wherein the K-factor of the first spray outlet (24) is three to four times as high as the K-factor of the second spray outlets (25) of the hood spray nozzle (11), and wherein preferably the K-factor of the second spray outlets (25) of the hood spray nozzle (11) is in a range of 0.15 to 0.25.
• Embodiment 9 Firefighting system (100) according to one of the preceding embodiments, wherein one or more channel spray nozzles (13) are installed in the channel (5), wherein the channel spray nozzle (13) each has a plurality of separate spray outlets (24, 25), wherein the spray outlets (24, 25) each have a predetermined K-factor and are aligned at an angle ( ⁇ ) to one another.
• Embodiment 10 Firefighting system (100) according to embodiment 9, wherein the duct (5) has two opposite side walls (21, 23), and the duct spray nozzle (13) is installed on one of the side walls and is configured to emit spray toward the opposite side wall.
• Embodiment 12 Firefighting system (100) according to embodiment 11, wherein the spray nozzle is mounted on the channel from the outside through a mounting opening in the side wall, and the channel is mounted on an outer side of the side wall, on the the duct spray nozzle is mounted, has a first positioning element, and wherein the duct spray nozzle has a corresponding second positioning element, wherein the first positioning element is positioned relative to the mounting opening such that the two positioning elements, when aligned with one another, result in a correct alignment of the plane (E 3 ) of the spray outlets relative to the direction (A) of the duct.
• Embodiment 13 Firefighting system (100) according to one of the preceding embodiments, wherein the duct spray nozzle (13) has a first spray outlet (24) which is oriented perpendicularly to the opposite side wall (23), and two second spray outlets (25), each oriented at a predetermined angle ( ⁇ ) to the first spray outlet (24), wherein one of the second spray outlets (25) is directed opposite to the direction (A) of the exhaust air flow, and the other of the second spray outlets (25) is directed in the direction (A) of the exhaust air flow.
• Embodiment 14 Firefighting system (100) according to embodiment 13, wherein the K-factor of the first and second spray outlets (24, 25) of the duct spray nozzle (13) is identical in each case, and preferably lies in a range of 0.3 to 0.5.
• Embodiment 15 Firefighting system (100) according to embodiment 13, wherein the K-factor of the first spray outlet (24) of the duct spray nozzle (13) is higher than the K-factors of the second spray outlets (25) of the duct spray nozzle (13), and the sum of the K-factors is in a range of 0.9 to 1.5.
• Embodiment 16 Firefighting system (100) according to one of the preceding embodiments, wherein the hood (3) has an inlet cross-section in a range of 3 m 2 to 5 m 2 , and a maximum distance between horizontally opposite side walls (17, 19) in a range of 2 m to 4 m.
• Embodiment 21 Firefighting system (100) according to one of the preceding embodiments, wherein the channel (5) has a bend (4, 6), and wherein a channel spray nozzle is installed downstream and/or upstream of the bend (4, 6) and has a distance of 6 m or less from the bend (4, 6).

Landscapes

• Health & Medical Sciences (AREA)
• Public Health (AREA)
• Business, Economics & Management (AREA)
• Emergency Management (AREA)
• Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
• Nozzles (AREA)

Applications Claiming Priority (3)

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Citations (8)

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• 2019
  • 2019-06-03 DE DE102019114873.1A patent/DE102019114873A1/de active Pending
• 2020
  • 2020-06-03 EP EP25180009.0A patent/EP4628170A1/fr active Pending
  • 2020-06-03 EP EP20732132.4A patent/EP3976206B1/fr active Active
  • 2020-06-03 WO PCT/EP2020/065262 patent/WO2020245139A1/fr not_active Ceased
  • 2020-06-03 US US17/614,162 patent/US20230044995A1/en active Pending
  • 2020-06-03 CN CN202090000637.XU patent/CN219090917U/zh active Active

Patent Citations (8)

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