EP3976206A1 - Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson - Google Patents

Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson

Info

Publication number
EP3976206A1
EP3976206A1 EP20732132.4A EP20732132A EP3976206A1 EP 3976206 A1 EP3976206 A1 EP 3976206A1 EP 20732132 A EP20732132 A EP 20732132A EP 3976206 A1 EP3976206 A1 EP 3976206A1
Authority
EP
European Patent Office
Prior art keywords
spray
fire
fighting system
spray nozzle
hood
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20732132.4A
Other languages
German (de)
English (en)
Other versions
EP3976206C0 (fr
EP3976206B1 (fr
Inventor
Frank Rönnfeldt
Stefan Schnell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minimax Viking Patent Management GmbH
Original Assignee
Minimax Viking Research and Development GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minimax Viking Research and Development GmbH filed Critical Minimax Viking Research and Development GmbH
Priority to EP25180009.0A priority Critical patent/EP4628170A1/fr
Publication of EP3976206A1 publication Critical patent/EP3976206A1/fr
Application granted granted Critical
Publication of EP3976206C0 publication Critical patent/EP3976206C0/fr
Publication of EP3976206B1 publication Critical patent/EP3976206B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

  • Fire-fighting systems are used in many places to monitor rooms and objects so that in the event of a fire, extinguishing agents can be deployed quickly and in a targeted manner to contain and ideally extinguish the fire.
  • a special application of such fire-fighting systems is fire-fighting by means of an extinguishing agent discharge in flues.
  • These can be, for example, exhaust ducts of air conditioning systems, ventilation systems or exhaust ducts for discharging cooking vapors, so-called vapors.
  • Cooking vapors are often a mixture of room air, water vapor and carbonaceous solids and fats entrained by water vapor.
  • the extinguishing agent itself is a limited resource in many applications, for example to a particularly high degree on ships, since it is not always guaranteed that it can be extinguished with seawater, which, due to its salt content, would severely attack the pipes of a pipe system of a fire-fighting system so that its service life is impaired becomes.
  • the operating pressure with which the extinguishing agent can be made available to the extinguishing agent dispensing devices is largely responsible for the installation costs of the fire fighting system. Higher operating pressure requires greater stability of the built-in components as well as higher energy costs with regard to the power supply of the water supply and the generators, especially on ships.
  • the invention was consequently based on the object of improving a fire-fighting system of the type specified at the outset such that the aforementioned disadvantages are overcome as far as possible.
  • the invention was based on the object of specifying a fire-fighting system for an exhaust duct of a hob which overcomes the above-mentioned disadvantages as far as possible.
  • the invention solves the problem on which it is based by in the
  • Fire-fighting system is installed at least one spray nozzle, preferably several spray nozzles are installed, each with several separate
  • the spray mist outlets each having a predetermined K-factor and being oriented at an angle to one another.
  • the K-factor is defined in the context of the invention as a key figure which is determined according to the following equation: with Q- as the volume flow in l / min, p and p as the static pressure in front of the nozzle in bar.
  • the invention is based on the approach that by using spray nozzles each with several spray mist outlets, the extinguishing agent can spread over a significantly larger area within the channel than with nozzles that have only a single spray mist outlet.
  • the distance between the spray nozzles can be selected to be as large as possible, which results in reduced installation work for the fire fighting system.
  • the spray mist outlets allow the spray characteristics to be adapted to the respective structural conditions.
  • the invention is advantageously developed in that the fire-fighting system has a hood arranged on the inlet side of the exhaust duct, in particular associated with the cooking area, for receiving cooking vapors from the cooking area, the inlet side of the channel being connected to the hood in a fluid-conducting manner, and wherein a spray nozzle is installed in the hood, which has several separate spray outlets, each of which has a predetermined K-factor and is oriented at an angle to one another.
  • the term “hood” is generally understood to mean that component which receives the mixture of substances to be conveyed away through the exhaust duct, for example room air or, in particular, cooking vapors.
  • Such a hood can be opened to the side and / or downwards. It can be attached to the ceiling of a room, hang down from the ceiling or be arranged on a side wall of a room.
  • a hood in the context of the invention also means receiving openings for the substance mixture to be conveyed away which are not vertically above the point of origin of the mixture of substances to be conveyed away, but on the same level or below, and which initially convey the mixture of substances downwards before it enters the exhaust duct.
  • the hood preferably has two opposing side walls and the hood spray nozzle is installed on one of the side walls and is adapted to emit spray toward the opposite side wall.
  • the spray mist outlets of the hood spray nozzle are aligned in one plane, preferably horizontally. This applies in particular to configurations in which the inlet opening of the hood faces upwards or downwards, that is to say is arranged above or below a cooking area, for example.
  • the plane in which the spray mist outlets of the hood spray nozzle are arranged is preferably parallel to the inlet opening of the hood.
  • the hood spray nozzle has a first spray mist outlet which is oriented perpendicularly to the opposite side wall, and two second spray mist outlets which are each oriented at a predetermined angle to the first spray mist outlet. This ensures that the cross section of the channel should be traversed with the first spray nozzle, while the two second spray outlets can be aligned with the third and fourth side walls of the hood in order to be able to cover the entire opening area of the hood with spray, and in particular also the corresponding side walls.
  • the K-factor of the first spray mist outlet is higher than the K-factors of the second spray mist outlets. This is a particular advantage that the inventors have recognized. Due to the higher K-factor of the first spray mist outlet, the first spray mist outlet has a greater throw than the second spray mist outlets. The second spray mist outlets have a finer atomization characteristic.
  • the fine spray mist of the second spray mist outlets is partially entrained by the spray mist from the first spray mist outlet, so that the differentiation of the K-factors according to the invention means that finer spray mist continues into Toward the second sidewall than would be the case if all of the spray outlets had the same K-factors. This achieves a higher fire fighting effect with the same water requirement.
  • the K-factor of the first spray mist outlet of the hood spray nozzle is in a range from 0.6 to 0.9
  • the K factor of the first spray mist outlet is three to four times as high as the k factor of the second spray mist outlets of the hood spray nozzle, with the K factor of the second spray mist outlets of the hood spray nozzle in a range from 0.15 to 0.25.
  • the invention has been described above on the basis of a first aspect.
  • the invention proposes in a fire fighting system of the type mentioned that one or more duct spray nozzles are installed in the duct, in particular downstream of the hood , wherein the duct spray nozzle has a plurality of separate spray mist outlets each, which each have a predetermined K-factor and are oriented at an angle to one another.
  • the preferred embodiments and advantages of the fire-fighting system according to the second aspect described below are at the same time preferred embodiments and advantages of the fire-fighting system according to the first aspect, as well as the advantages and preferred embodiments of FIG.
  • Fire-fighting system according to the first aspect are preferred embodiments and advantages for the second aspect.
  • the duct of the fire fighting system has two opposite side walls, and the duct spray nozzle is installed on one of the side walls and is adapted to emit spray mist in the direction of the opposite side wall.
  • the spray nozzle in the duct is preferably installed in a vertical side wall.
  • the spray mist outlets of the channel spray nozzle are preferably aligned in a plane, preferably parallel to the direction of the channel. In the case of a horizontal channel, the spray mist outlets are therefore aligned in a horizontal plane. However, if the channel is slightly inclined relative to the horizontal, which is often the case in practice, the spray mist outlets are preferably aligned in an equally slightly inclined plane.
  • the alignment of the spray nozzles is carried out as follows in a preferred embodiment:
  • the channel preferably has a mounting opening in that side wall in which the spray nozzle is to be installed, and the spray nozzle is mounted from the outside through the mounting opening in the side wall, the Channel having a first positioning element on an outer side of the side wall and wherein the channel spray nozzle has a corresponding second positioning element, the first positioning element being positioned relative to the mounting opening such that the two positioning elements, when they are aligned with one another, a correct alignment of the plane of the spray outlets relative to the direction of the channel.
  • the positioning elements can be, for example, optical indicators that are aligned with one another or facing one another or that interlock with one another in a form-fitting manner.
  • the spray nozzle can preferably only be mounted on the channel if the positioning elements are correctly aligned with one another.
  • the positioning elements By providing the positioning elements, the risk of misalignment of the spray nozzle is reduced. A visual inspection of the inside of the duct becomes superfluous, the installation effort and the installation quality are thereby significantly optimized.
  • the duct spray nozzle has a first spray mist outlet, which is oriented perpendicular to the opposite side wall, and two second spray mist outlets, which are each oriented at a predetermined angle to the first spray mist outlet, one of the second spray mist outlets in the opposite direction the exhaust air flow is directed and the other of the second spray mist outlets is directed in the direction of the exhaust air flow.
  • the direction of the exhaust air flow is essentially the direction of the duct.
  • the K-factor of the first and second spray mist outlets of the duct spray nozzle is preferably identical in each case and is preferably in a range from 0.2 to 0.5.
  • the K-factor of the first spray mist outlet of the duct spray nozzle is higher than the K-factor of the second spray mist outlets of the duct Spray nozzle, and that the sum of the K-factors of the first and second spray mist outlets is in a range from 0.9 to 1.5.
  • the advantage of a first spray outlet with a higher K-factor is, as described above for the first aspect, a greater throw of the spray from the first spray outlet and the more finely atomized extinguishing agent from the second
  • the invention in a third aspect, relates to a particularly preferred parameterization of the fire fighting system.
  • the advantages and preferred embodiments of the first and second aspects are at the same time advantages and preferred embodiments of the third aspect, and therefore to avoid repetition of the above
  • the hood preferably has an inlet cross section in a range from 3 m 2 to 5 m 2 and a maximum distance between horizontally opposite side walls in a range from 2 m to 4 m.
  • the channel has a flow cross-section in a range from 1 m 2 to 2 m 2 , and a maximum distance between horizontally opposite side walls in a range from 1 m to 2 m.
  • the hood spray nozzle and a duct spray nozzle installed adjacent to it preferably have a distance in the direction of the exhaust air flow in a range of 1 m to 3 m.
  • channel spray nozzles are installed in the channel and are spaced from one another in the direction of the exhaust air flow in a range of 9 m to 11 m.
  • the spray nozzles are fluidly connected to an extinguishing fluid supply, the spray nozzles and the extinguishing fluid supply being designed for an operating pressure at the spray nozzles in a range of 70 bar or less, preferably in a range from 50 bar to 65 bar.
  • the duct has a bend, a duct spray nozzle being installed downstream and / or upstream of the bend and being at a distance of 6 m or less from the bend.
  • a bend is understood here to mean a component which effects a change in direction of the channel, for example about a vertical axis or a horizontal axis, preferably by 45 ° or more, particularly preferably by 90 ° or more.
  • the above parameters of the third aspect are implemented together, which achieves an efficiency in the use of the extinguishing agent that is superior to previous systems, with little installation effort and yet undiminished high fire fighting performance.
  • the spray nozzle or nozzles are made partially or completely of stainless steel.
  • the use of stainless steel as the nozzle material significantly increases the permissible temperature range compared to the copper nozzles or copper components known from the prior art. This provides a much higher temperature reserve.
  • the spray nozzles are designed as open extinguishing nozzles.
  • one or more fire parameter sensors are installed on the hood and / or on the duct, the fire fighting system having a triggering device which is directly or indirectly connected to the fire parameter sensors in a signal-conducting manner and is set up to start the extinguishing agent supply to the spray nozzles, as soon as the reaching or exceeding of a predetermined fire parameter threshold value or the presence of a fire parameter has been detected by the fire parameter sensors.
  • fire parameters include, for example, temperatures, smoke aerosols, electromagnetic radiation from flames, sparks or embers or fire gases
  • FIG. 1 a schematic three-dimensional view of a fire-fighting system according to a preferred exemplary embodiment
  • Figures 2a to c schematic detailed views of the fire fighting system according to Figure 1
  • FIGS. 3a to g further schematic detailed views of the fire-fighting system according to FIGS. 1 to 2c
  • FIGS. 4a-4c various schematic representations of a spray nozzle according to a preferred exemplary embodiment
  • Figure 5 is a schematic cross-sectional view through a nozzle insert for the spray nozzle according to Figures 4a-4c,
  • Figures 6a-6c various schematic representations of a base body of the
  • FIGS. 7a-7e various schematic representations of a swirl body for the
  • Nozzle insert according to Figures 4a-6c.
  • a fire-fighting system 100 is shown in FIG.
  • the fire-fighting system 100 has a hood 3 which is set up to receive mixtures of substances to be conveyed away, for example to receive cooking fumes from a hotplate located under the hood.
  • a bend 4 is connected to the hood 3, which deflects the incoming substance mixture flow by approx. 90 ° around a horizontal axis and then transfers it into a channel 5, also referred to as a discharge channel.
  • the channel 5 extends from its hood-side inlet side 7 to an outlet side 9, on which one or more flow generators for forced extraction can optionally be arranged.
  • the channel 5 defines a flow direction A of the exhaust air which is essentially the same as the orientation of the channel 5.
  • the hood 3 has a hood spray nozzle 11. At a distance from the hood spray nozzle 11, at least one channel spray nozzle 13 is arranged in the channel 5. In the present exemplary embodiment there are three duct spray nozzles 13.
  • the channel 5 has a bend 6 in which the course of the channel 5 is deflected by 90 ° about a vertical axis. From a first duct spray nozzle 13 to the Elbow 6 is a distance in a range from 4 m to 6 m. On the downstream side of the bend 6 is a second duct spray nozzle 13 which is arranged at a distance in a range of 4 m to 6 m from the bend.
  • a third channel spray nozzle is arranged further downstream, which is arranged at a distance in a range of 9 m to 12 m from the second channel spray nozzle 13.
  • the channel spray nozzles 13 are preferably mounted in a first side wall 21 of the channel 5 and are set up to emit a spray mist in the direction of the opposite second side wall 23 of the channel 5. Details on the alignment of the spray nozzles emerge from the following figures.
  • the hood spray nozzle 11 has a plurality of spray mist outlets which lie in a common plane E2.
  • the plane E2 is parallel to a plane Ei which defines the inlet cross section to the hood 3.
  • the hood spray nozzle 11 is positioned in a first side wall 17 of the hood 3 and is set up to emit spray mist through the spray mist outlets in the direction of the opposite side wall 19, cf.
  • Figure 3a is a first side wall 17 of the hood 3 and is set up to emit spray mist through the spray mist outlets in the direction of the opposite side wall 19, cf.
  • the channel spray nozzles 13, one of which is shown in Figures 2a and c, are arranged in such a way that the spray mist outlets are each arranged in a common plane E3 parallel to the flow direction A of the exhaust air and thus to the direction of the channel 5.
  • the plane E3 in which the spray mist outlets of the channel spray mist nozzle 13 are located would also be horizontal.
  • a first spray mist outlet is oriented transversely to the direction of flow A of the exhaust air, while a second spray mist outlet is arranged opposite to the flow direction and a further second spray mist outlet is angled in the flow direction relative to the first spray mist outlet. This is explained in more detail in FIGS. 4 a and the following for the hood spray nozzle 11 and the channel spray nozzles 13.
  • Figure 3a which shows a plan view of the fire fighting system according to Figure 1, the dimensions of the hood 3 relative to the channel 5 can be seen.
  • the hood 3 has a cross section Bi-B2 of approximately 3m 2 to 5m 2 . From the hood 3 it merges into the channel 5 with a reduced cross-section, which has a width B3 and a height Hi, preferably in the range from 1 m 2 to 2 m 2 .
  • the channel 5 is at least partially inclined by an angle ⁇ relative to the horizontal, so that the flow direction A of the exhaust air does not run exactly horizontally.
  • the alignment of the spray nozzles preferably takes this into account.
  • Figures 3c to 3g illustrate the alignment of the hood spray nozzle 11 with the spray mist outlets in the plane E2, in the direction essentially towards the opposite second side wall 19.
  • the hood viewed from the hood spray nozzle 11, is preferably in the direction of the inlet cross section
  • a V-shaped separator is arranged in the egg level.
  • FIGS. 1 to 3g basically show the structure of the fire fighting system and the positioning of the spray nozzles 11, 13, the following figures show an exemplary preferred structure of the spray nozzles 11, 13 themselves.
  • FIG. 4a shows an example of a spray nozzle which can be used as a hood spray nozzle 11 or a duct spray nozzle 13.
  • the spray nozzle 11, 13 has a housing 27 into which a first nozzle insert 29a and two second nozzle inserts 29b are inserted.
  • the spray nozzle 11, 13 is shown in a side view.
  • the spray nozzle 11, 13 has a screen body 31.
  • the housing 27 is threaded 33 for installing the spray nozzle.
  • a sealing ring 35 is provided for sealing the housing 27 against the installation body.
  • the housing has a convexly curved, preferably partially spherical surface section 37, which is adjoined by a frustoconical surface section 39.
  • the housing 27 Towards the inlet side, the housing 27 has a cylindrical surface section 41. The nozzle inserts are essentially flush with the surface of the housing 27.
  • FIG. 4c a cross-sectional view through the housing 27 of the spray nozzle 11, 13 is shown.
  • the housing 27 has an extinguishing fluid inlet 45.
  • an internal thread 43 is provided for mounting the screen body 31 (see FIG. 1).
  • the housing has several recesses 47 for receiving a nozzle insert 29a, b.
  • the recesses 47 each have an internal thread for screwing in the nozzle inserts 29a, b.
  • the nozzle inserts 29a, 29a, b are connected to the extinguishing fluid inlet 45 in a fluid-conducting manner.
  • One of the recesses 47 is aligned coaxially to an assembly direction M defined by the extinguishing fluid insert 45, so that the longitudinal axis L of the nozzle insert 29a to be inserted into the recess 47 is also aligned coaxially to the assembly direction.
  • the remaining recesses 47 are aligned at an angle ⁇ to the assembly direction M.
  • the angle ⁇ is preferably in a range between 50 ° and 70 °, particularly preferably 60 ° or 65 °.
  • FIG. 5 now shows the nozzle insert 29a, b, which is to be inserted into the recesses 47.
  • the nozzle insert 29a, b has a base body 49.
  • a swirl body 51 is inserted in the base body 49 and aligned coaxially to the longitudinal axis L.
  • the swirl body 51 is fixed in the base body 49 by means of a screwed-in retaining ring 53.
  • the base body 49 has an external thread 55 for screwing into the respective recess 47.
  • recesses 57 for attaching a screwing tool are provided on the outlet end of the nozzle insert 29a, b.
  • the base body 49 has a spray mist outlet 24/25 through which the extinguishing fluid entering through the extinguishing fluid inlet 23 leaves the spray mist nozzle 1 in spray mist form after flowing through the nozzle insert 29a, b.
  • the spray mist is generated in that a first part Ti of the extinguishing fluid entering is deflected in the direction of the arrows Ti by the swirl body 51 outwards in its circumferential area and in the vicinity of a wall of the base body 49, in order to then flow into a Vertebrae to be steered.
  • a second partial flow T2 passes through the swirl body 51 in its center through a passage opening (cf. FIGS. 7a-e).
  • the base body 49 is discussed further below with reference to FIGS. 6a-6c.
  • the base body 49 of the nozzle insert 29a, b has an inlet-side end face 61 and an outlet-side end face 65.
  • a through opening 63, into which the swirl body 51 extends, extends between these two end faces 61, 65 is recorded (see FIG. 2) and opens into the spray mist outlet 24/25.
  • the spray mist outlet 24/25 is shown in detail in Figure 6c.
  • the base body 49 Upstream of the spray mist outlet 24/25, the base body 49 has a seat 67 against which the swirl body 51 is supported.
  • the seat surface 67 merges into the spray mist outlet 24/25 at one point.
  • the cross section at which the seat 67 merges into the cross section of the spray mist outlet 24/25 is the so-called
  • Inflow cross section 69 In the inflow cross section 69, the spray mist outlet 24/25 has a diameter dan. The transition from the seat 67 to the spray mist outlet 24/25 is preferably continuous. The spray mist outlet 24/25 has a minimal flow cross-section 71 at its narrowest point. The minimum flow cross section 71 is offset inward from the outlet-side end face 65 at a depth T.
  • the spray mist outlet 24/25 Downstream of the minimum flow cross section 71, the spray mist outlet 24/25 is widened along a convex curvature and has a diameter d out at an outlet cross section 73 which is greater than the diameter at the minimum flow cross section 71.
  • Flow cross section 71 is marked with dmin.
  • the transition from the inflow cross-section 69 to the minimum flow cross-section 71 preferably takes place along a convexly curved surface with a radius of curvature R.
  • the transition from the minimal one preferably takes place
  • Flow cross-section 71 up to outlet cross-section 73 likewise along a convexly curved surface, in the present exemplary embodiment also with the radius of curvature R.
  • the convexly curved surface is continuous from inflow cross-section 69 to outlet cross-section 69, i.e. H. formed without kinks.
  • the course of curvature is particularly preferably designed to be uninterrupted and constant with the same radius of curvature R.
  • the contour of the spray mist outlet 24/25 rounded off by the convex curvature produces an unexpectedly clear stabilization of the K factor of the nozzle insert 29a, b.
  • FIGS. 7a-7e The swirl body 51 for the nozzle insert 29a, b of the present exemplary embodiment is described in more detail below in FIGS. 7a-7e.
  • Figure 7a a side view of the swirl body 51 is shown with a partially exposed cross section.
  • the swirl body 51 is on a first, inlet-side end face 75 of extinguishing fluid flowed towards.
  • a first part Ti is diverted to the outer circumference of the swirl body 51 through a plurality of radially extending grooves 79. This is also shown in Figure 7b.
  • a second part T2 flows without being deflected to the outer circumference through a through opening 81 to a second end face 83 of the swirl body 51.
  • FIG. 7a a side view of the swirl body 51 is shown with a partially exposed cross section.
  • the swirl body 51 is on a first, inlet-side end face 75 of extinguishing fluid flowed towards.
  • a first part Ti is diverted to the outer circumference of the swirl
  • the first partial flow Ti is conveyed again in the direction of the spray mist outlet 24/25 through several vortex channels 85 arranged eccentrically and radially parallel relative to the longitudinal axis L, with a vortex flow in the eccentric arrangement of the vortex channels 85 the volume between the swirl body 51 and the base body 49 is generated upstream of the spray mist outlet.
  • the two partial flows Ti and T2 are combined again and expelled together through the spray mist outlet 24/25.
  • the vertebral canals 85 are preferably all offset by the same offset V to a respective radial.
  • the vortex channels 85 are inclined relative to the outlet-side, second end face 83 of the swirl body 51 by an angle g.
  • the vertebral channels 85 or the groove bases of the vertebral channels 85 are preferably 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 also pivoted by an angle 5 to the longitudinal axis L.
  • a high-pressure spray nozzle 1 with a total of three nozzle inserts 29a, b has been shown.
  • the invention also includes spray nozzles which have a different number of nozzle inserts, for example five, seven or more nozzle inserts, and in which either one nozzle insert is aligned coaxially to the assembly direction M, or in which all nozzle inserts are at an angle ⁇ to Mounting direction M are aligned, or in which one or more recesses 47 are not provided with a nozzle insert 29a, b or are closed with a blind plug or similar closure element.
  • T 1 , T 2 partial flow, extinguishing fluid T depth, minimum flow cross-section

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  • 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)

Abstract

L'invention concerne une installation de lutte contre le feu (100) pour un conduit d'évacuation (5), en particulier d'une zone de cuisson, comprenant un conduit (5) qui présente un côté d'entrée (7) ainsi qu'un côté de sortie (9) espacé du côté d'entrée (7), et qui définit une direction (A) d'écoulement d'air d'évacuation depuis le côté d'entrée (7) vers le côté de sortie (9). Selon l'invention, au moins une buse de brouillard de pulvérisation, de préférence plusieurs buses de brouillard de pulvérisation (11, 13) sont en outre installées dans l'installation de lutte contre le feu (100), lesquelles présentent chacune plusieurs sorties de brouillard de pulvérisation séparées (24, 25), les sorties de brouillard de pulvérisation (24, 25) présentant chacune un facteur K prédéterminé et étant orientées suivant un certain angle les unes par rapport aux autres.
EP20732132.4A 2019-06-03 2020-06-03 Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson Active EP3976206B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP25180009.0A EP4628170A1 (fr) 2019-06-03 2020-06-03 Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019114873.1A DE102019114873A1 (de) 2019-06-03 2019-06-03 Brandbekämpfungsanlage für einen Abzugskanal, insbesondere einer Kochstelle
PCT/EP2020/065262 WO2020245139A1 (fr) 2019-06-03 2020-06-03 Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP25180009.0A Division EP4628170A1 (fr) 2019-06-03 2020-06-03 Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson
EP25180009.0A Division-Into EP4628170A1 (fr) 2019-06-03 2020-06-03 Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson

Publications (3)

Publication Number Publication Date
EP3976206A1 true EP3976206A1 (fr) 2022-04-06
EP3976206C0 EP3976206C0 (fr) 2025-12-24
EP3976206B1 EP3976206B1 (fr) 2025-12-24

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP20732132.4A Active EP3976206B1 (fr) 2019-06-03 2020-06-03 Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson
EP25180009.0A Pending EP4628170A1 (fr) 2019-06-03 2020-06-03 Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson

Family Applications After (1)

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EP25180009.0A Pending EP4628170A1 (fr) 2019-06-03 2020-06-03 Installation de lutte contre le feu pour un conduit d'évacuation, en particulier d'une zone de cuisson

Country Status (5)

Country Link
US (1) US20230044995A1 (fr)
EP (2) EP3976206B1 (fr)
CN (1) CN219090917U (fr)
DE (1) DE102019114873A1 (fr)
WO (1) WO2020245139A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102019114868A1 (de) 2019-06-03 2020-12-03 Minimax Viking Research & Development Gmbh Sprühnebeldüse für Brandbekämpfungsanlagen, sowie Brandbekämpfungsanlagen selbiger
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EP4628170A1 (fr) 2025-10-08
EP3976206C0 (fr) 2025-12-24
EP3976206B1 (fr) 2025-12-24
DE102019114873A1 (de) 2020-12-03
US20230044995A1 (en) 2023-02-09
WO2020245139A1 (fr) 2020-12-10
CN219090917U (zh) 2023-05-30

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