EP3976206B1 - 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
EP3976206B1
EP3976206B1 EP20732132.4A EP20732132A EP3976206B1 EP 3976206 B1 EP3976206 B1 EP 3976206B1 EP 20732132 A EP20732132 A EP 20732132A EP 3976206 B1 EP3976206 B1 EP 3976206B1
Authority
EP
European Patent Office
Prior art keywords
spray mist
duct
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.)
Active
Application number
EP20732132.4A
Other languages
German (de)
English (en)
Other versions
EP3976206C0 (fr
EP3976206A1 (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 Patent Management 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 Patent Management GmbH filed Critical Minimax Viking Patent Management 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 suppression systems are widely used to monitor rooms and buildings, enabling the rapid and targeted application of extinguishing agents to contain and, ideally, extinguish a fire in the event of a blaze.
  • a particular application of such systems is fire suppression via the application of extinguishing agents in exhaust ducts.
  • These can include, for example, exhaust ducts from air conditioning systems, ventilation systems, or exhaust ducts for extracting cooking fumes.
  • Cooking fumes often consist of a mixture of room air, water vapor, and carbon-containing solids and fats carried along by the water vapor.
  • WO 2017/032918 A1 shows a fire suppression system of a ventilation system with an associated procedure.
  • CN 205245277 U reveals a range hood with a fire suppression system.
  • US 7789165 B1 shows an industrial fire protection system for oil cooking appliances with an associated procedure.
  • CN 208145263 U concerns a "fire alarm and suppression system for the private kitchen”.
  • the invention was therefore based on the objective of improving a fire-fighting system of the type described above in such a way as to overcome the aforementioned disadvantages as far as possible.
  • the invention was based on the objective of providing a fire-fighting system for a cooking range exhaust duct that overcomes the aforementioned disadvantages as far as possible.
  • the invention solves the underlying problem by installing at least one spray mist nozzle in the fire suppression system, preferably several spray mist nozzles, each having several separate spray mist outlets, wherein the spray mist outlets each have a predetermined K-factor and are aligned at an angle to each other, wherein the spray mist nozzle has a first spray mist outlet that is aligned perpendicularly to the opposite side wall, and two second spray mist outlets that are each aligned at a predetermined angle ( ⁇ ) to the first spray mist outlet.
  • the invention is based on the premise that by using spray nozzles with multiple spray outlets, a significantly wider distribution of the extinguishing agent within the duct can be achieved than with nozzles that have only a single spray outlet. Furthermore, the spacing between the spray nozzles can be minimized. Larger sizes are selected, which reduces the installation effort required for the fire suppression system. Furthermore, the spray mist outlets allow the spray pattern to be adjusted to the specific structural conditions.
  • the invention is advantageously further developed in a first aspect by the fire suppression system comprising a hood arranged on the inlet side of the exhaust duct, in particular associated with the cooking area, for receiving cooking fumes from the cooking area, wherein the inlet side of the duct is fluidly connected to the hood, and wherein a spray mist nozzle is installed in the hood, which has several separate spray mist outlets, each having a predetermined K-factor and oriented at an angle to one another.
  • the term "hood” is generally understood to mean the component that receives the mixture of substances to be conveyed through the exhaust duct, for example, room air or, in particular, cooking fumes. Such a hood can be open to the side and/or downwards.
  • a hood also includes receiving openings for the mixture to be conveyed, which are not located vertically above the point of origin of the mixture to be conveyed, but on the same level or below, and which first convey the mixture downwards before it enters the extraction channel.
  • the hood has two opposing side walls, and the hood spray nozzle is installed on one of the side walls and configured to emit spray mist in the direction of the opposite side wall.
  • the spray mist outlets of the hood spray nozzle are aligned horizontally and/or parallel to the hood's inlet opening in a plane. This applies particularly to configurations in which the hood's inlet opening points upwards or downwards, for example, above or below a cooking surface.
  • the spray nozzle is a hood-type spray nozzle with a first spray outlet oriented perpendicularly to the opposite side wall and two second spray outlets, each oriented at a predetermined angle to the first spray outlet. This ensures that the first spray nozzle is designed to selectively traverse the cross-section of the duct, while the two second spray outlets can be directed towards the third and fourth side walls of the hood to cover the entire to be able to cover the opening surface of the hood with spray mist, and in particular the corresponding side walls.
  • the K-factor of the first spray outlet is higher than the K-factors of the second spray outlets.
  • the second spray outlets in turn, have a finer atomization characteristic. Because the spray outlets are aligned at a predetermined angle to each other, the following effect occurs according to the invention: The fine spray from the second spray outlets is partially carried along by the spray from the first spray outlet, so that, due to the differentiation of the K-factors according to the invention, even finer spray is propelled further towards the second side wall than would be the case if all spray outlets had the same K-factors. This results in a higher fire-fighting effect with the same water consumption.
  • the K-factor of the first spray mist outlet of the hood spray mist nozzle is in the range of 0.6 to 0.9. Further preferably, the K-factor of the first spray mist outlet is three to four times higher than the K-factor of the second spray mist outlets of the hood spray mist nozzle, wherein preferably the K-factor of the second spray mist outlets of the hood spray mist nozzle is in a range of 0.15 to 0.25.
  • the invention has been described above with reference to a first aspect.
  • the invention proposes, in a fire-fighting system of the type described above, that one or more duct spray nozzles are installed in the duct, in particular downstream of the hood, wherein the duct spray nozzle each has several separate spray outlets, each having a predetermined K-factor and oriented at an angle to one another.
  • preferred embodiments and advantages of the fire-fighting system described below according to the second aspect are also preferred embodiments and advantages of the fire-fighting system according to the first aspect, as are the advantages and preferred embodiments of the fire-fighting system.
  • preferred embodiments and advantages for the second aspect are:
  • the fire suppression system duct has two opposing side walls, and the duct spray nozzle is installed on one of the side walls and configured to emit spray mist towards the opposite side wall.
  • the spray nozzle in the duct is preferably installed in a vertical side wall.
  • the spray outlets of the duct spray nozzle are preferably aligned in a plane, preferably parallel to the direction of the duct. In a horizontal duct, the spray outlets are therefore aligned in a horizontal plane. However, if the duct is slightly inclined relative to the horizontal, which is frequently encountered in practice, the spray outlets are preferably aligned in a similarly slightly inclined plane.
  • the alignment of the spray nozzles is carried out as follows:
  • the channel has a mounting opening in the side wall in which the spray nozzle is to be installed, and the spray nozzle is mounted in the side wall from the outside through the mounting opening.
  • the channel has a first positioning element on an outer side of the side wall, and the channel spray nozzle has a corresponding second positioning element.
  • the first positioning element is positioned relative to the mounting opening such that, when aligned with each other, the two positioning elements result in correct alignment of the plane of the spray outlets relative to the direction of the channel.
  • the positioning elements can, for example, be optical indicators that are aligned in a straight line with each other or that point towards each other, or that interlock positively.
  • the spray nozzle can preferably only be mounted on the channel if the positioning elements are correctly aligned with each other.
  • the positioning elements By providing the positioning elements, the risk of misalignment of the spray nozzle is reduced. Visual inspection of the channel interior becomes unnecessary, significantly optimizing installation effort and quality.
  • the spray mist nozzle is a channel spray mist nozzle with 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, wherein One of the second mist outlets is directed against the direction of the exhaust airflow, and the other is directed in the direction of the exhaust airflow.
  • the direction of the exhaust airflow is essentially the direction of the duct. Orienting one of the second mist outlets upstream in the duct and the other downstream results in particularly good mist distribution along the duct direction, while the first mist outlet specifically promotes mist distribution perpendicular to the direction of the exhaust airflow.
  • the K-factor of the first and second spray mist outlets of the duct spray mist nozzle is identical and preferably lies in a range of 0.2 to 0.5.
  • the K-factor of the first spray mist outlet of the duct spray mist nozzle is higher than the K-factors of the second spray mist outlets of the duct spray mist nozzle. and the sum of the K-factors of the first and second spray mist outlets is in a range of 0.9 to 1.5.
  • first spray mist outlet with a higher K-factor is, as described above for the first aspect, a greater throw distance of the spray mist from the first spray mist outlet, which carries along more finely atomized extinguishing agent from the second spray mist outlets in a transverse direction to the channel.
  • the invention in a third aspect, relates to a particularly preferred parameterization of the fire suppression system.
  • the advantages and preferred embodiments of the first and second aspects are simultaneously advantages and preferred embodiments of the third aspect; therefore, to avoid repetition, reference is made to the above explanations.
  • the following preferred embodiments of the third aspect are also preferred embodiments of the first and second aspects.
  • the hood has an inlet cross-section in a range of 3 m2 to 5 m2 , and a maximum distance between horizontally opposing side walls in a range of 2 m to 4 m.
  • the channel has a flow cross-section in a range of 1 m2 to 2 m2, and a maximum distance between horizontally opposing side walls in a range of 1 m to 2 m.
  • the hood spray nozzle and a duct spray nozzle installed adjacent to it have a distance in the direction of the exhaust air flow of a range of 1 m to 3 m.
  • duct spray nozzles are installed in the duct and are spaced 9 m to 11 m apart in the direction of the exhaust air flow.
  • the spray nozzles are fluidly connected to a fire extinguishing fluid supply, wherein the spray nozzles and the fire extinguishing fluid supply are designed for an operating pressure at the spray nozzles in a range of 70 bar or less, preferably in a range of 50 bar to 65 bar.
  • the channel has a bend, with a channel spray nozzle installed downstream and/or upstream of the bend at a distance of 6 m or less.
  • a bend is understood here to be a component that causes a change in the direction of the channel, for example about a vertical or horizontal axis, preferably by 45° or more, and particularly preferably by 90° or more.
  • the aforementioned parameters of the third aspect are jointly realized, achieving a superior efficiency in the use of the extinguishing agent compared to previous systems, with low installation effort and yet undiminished high fire-fighting performance.
  • the spray nozzle(s) are partially or completely made of stainless steel.
  • the use of stainless steel as the nozzle material significantly increases the permissible operating temperature range compared to copper nozzles or copper components known from the prior art. This provides a much higher temperature reserve.
  • the spray mist nozzles are designed as open extinguishing nozzles.
  • one or more fire characteristic sensors are installed on the hood and/or on the duct, wherein the fire suppression system has a triggering device that is directly or indirectly connected to the fire characteristic sensors and is configured to start the supply of extinguishing agent to the spray nozzles as soon as the fire characteristic sensors detect that a predetermined fire characteristic threshold has been reached or exceeded, or that a fire characteristic is present.
  • fire characteristics include, for example, temperatures, smoke aerosols, electromagnetic radiation from flames, sparks or embers, or combustion gases.
  • FIG. 1 A fire suppression system 100 is shown.
  • the fire suppression system 100 has a hood 3 which is designed to receive mixtures of substances to be conveyed, for example, cooking fumes from a cooking area located under the hood.
  • a bend 4 is connected to the hood 3, which deflects the incoming mixture flow by approximately 90° around a horizontal axis and then transfers it into a channel 5, also referred to as an exhaust channel.
  • the channel 5 extends from its hood-side inlet 7 to an outlet 9, where one or more flow generators for forced exhaust can optionally be arranged.
  • Channel 5 defines a flow direction A of the exhaust air, which is essentially the same as the orientation of channel 5.
  • the hood 3 has a hood spray nozzle 11. At least one channel spray nozzle 13 is arranged in channel 5 at a distance from the hood spray nozzle 11. In the present embodiment, there are three channel spray nozzles 13.
  • Channel 5 has a bend 6 in which the course of channel 5 is deflected by 90° around a vertical axis. From a first channel spray mist nozzle 13 to the The bend 6 is located at a distance of 4 m to 6 m. On the downstream side of the bend 6 is a second channel spray mist nozzle 13, which is arranged at a distance of 4 m to 6 m from the bend.
  • a third channel spray mist nozzle is arranged at a distance of 9 m to 12 m from the second channel spray mist nozzle 13.
  • the channel spray nozzles 13 are preferably mounted in a first side wall 21 of the channel 5 and configured to emit a spray mist towards the opposite second side wall 23 of the channel 5. Details regarding the alignment of the spray nozzles are shown in the following figures.
  • the hood spray nozzle 11 has several spray mist outlets located in a common plane E2 .
  • Plane E2 is parallel to plane E1 , 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 configured to emit spray mist through the spray mist outlets towards the opposite side wall 19, cf. Figure 3a .
  • channel spray nozzles 13 within channel 5 are the channel spray nozzles 13, one of which is in the Figures 2a and c shown, arranged such that the spray mist outlets are each located in a common plane E 3 parallel to the flow direction A of the exhaust air and thus to the direction of the duct 5.
  • the plane E 3 in which the spray mist outlets of the duct spray mist nozzle 13 are located would also be horizontal.
  • a first spray mist outlet is oriented transversely to the flow direction A of the exhaust air, while a second spray mist outlet is oriented against 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 described in more detail in the Figures 4a and explained below for the hood spray nozzle 11 and the duct spray nozzles 13.
  • FIG 3a which shows a top view of the fire suppression system according to Figure 1
  • the dimensions of hood 3 relative to duct 5 are shown.
  • Hood 3 has a cross-section B1 - B2 of approximately 3m2 to 5m2 .
  • the hood 3 From the hood 3, it transitions into the channel 5, which has a reduced cross-section, a width B 3 and a height H 1 , preferably in the range of 1m 2 to 2m 2 .
  • channel 5 is at least partially inclined at an angle ⁇ relative to the horizontal, so that the exhaust air flow direction A is not exactly horizontal.
  • the orientation of the spray nozzles preferably takes this into account.
  • Figures 3c to 3g Figure 1 illustrates the alignment of the hood spray nozzle 11 with the spray outlets in plane E 2 , in a direction essentially towards the opposite second side wall 19.
  • a V-shaped separator is arranged, preferably in the direction of the inlet cross-section in plane E 1 , as seen from the hood spray nozzle 11.
  • FIG 4a An exemplary spray mist nozzle is shown, which can be used as a hood spray mist nozzle 11 or as a duct spray mist nozzle 13.
  • the spray mist 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 sieve body 31.
  • the housing 27 has a thread 33 for installing the spray nozzle.
  • a sealing ring 35 is provided for sealing the housing 27 against the mounting body.
  • the housing has a convexly curved, preferably partially spherical, surface section 37, to which a frustoconical surface section 39 adjoins.
  • 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.
  • Figure 1 shows a cross-sectional view through the housing 27 of the spray nozzle 11, 13.
  • the housing 27 has a fire extinguishing fluid inlet 45.
  • On the inside of the fire extinguishing fluid inlet 45 is an internal thread 43 for mounting the sieve body 31 (see Figure 2).
  • Figure 1 provided.
  • the housing has several recesses 47 for receiving a nozzle insert 29a, b each.
  • the recesses 47 each have an internal thread for screwing in the nozzle inserts 29a, b.
  • the nozzle inserts 29a, b are fluid-conductingly connected to the extinguishing fluid inlet 45.
  • One of the recesses 47 is aligned coaxially with a mounting direction M defined by the extinguishing fluid insert 45, such that the longitudinal axis L of the nozzle insert 29a to be inserted into the recess 47 is also aligned coaxially with the mounting direction.
  • the remaining recesses 47 are aligned at an angle ⁇ to the mounting direction M.
  • the angle ⁇ is preferably in a range between 50° and 70°, particularly preferably at 60° or 65°.
  • 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 into the base body 49 and aligned coaxially with 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-side end face of the nozzle insert 29a, b.
  • the base body 49 has a spray mist outlet 24/25 through which the extinguishing fluid entering via the extinguishing fluid inlet 23 exits the spray mist nozzle 1 in the form of a spray mist after passing through the nozzle insert 29a, b.
  • the spray mist is generated by deflecting a first portion T1 of the entering extinguishing fluid outwards in the direction of arrows T1 by the swirl body 51 into its circumferential region and towards a wall of the base body 49, in order to then be directed into a vortex upon approaching the spray mist outlet 24/25.
  • a second partial flow T2 passes through the swirl body 51 in its center through a through-opening (see figure). Figures 7a-e ).
  • the main body 49 is discussed further.
  • the main 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 extends between these two end faces 61, 65, into which the swirl body 51 is inserted. is recorded (see above).
  • Figure 2 and which leads into the spray mist outlet 24/25.
  • the spray mist outlet 24/25 is described in detail in Figure 6c shown.
  • the base body 49 Upstream of the spray outlet 24/25, the base body 49 has a seat 67 against which the swirl body 51 is supported.
  • the seat 67 transitions into the spray outlet 24/25 at a single point.
  • the cross-section at which the seat 67 transitions into the cross-section of the spray outlet 24/25 is the so-called inflow cross-section 69.
  • the spray outlet 24/25 Within the inflow cross-section 69, the spray outlet 24/25 has a diameter d.
  • the transition from the seat 67 to the spray outlet 24/25 is preferably continuous.
  • the spray mist outlet 24/25 has a minimum flow cross-section 71.
  • the minimum flow cross-section 71 is offset inwards at a depth T from the outlet-side frontal surface 65.
  • 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 at an outlet cross-section 73 that is larger than the diameter at the minimum flow cross-section 71.
  • the diameter at the minimum flow cross-section 71 is denoted by d min .
  • the transition from the inflow cross-section 69 to the minimum flow cross-section 71 occurs along a convexly curved surface with a radius of curvature R. More preferably, the transition from the minimum flow cross-section 71 to the outlet cross-section 73 also occurs along a convexly curved surface, in the present embodiment also with the radius of curvature R.
  • the convexly curved surface from the inflow cross-section 69 to the outlet cross-section 69 is continuous, i.e., free of kinks.
  • the curvature profile is continuous and constant with the same radius of curvature R. The rounded contour of the spray mist outlet 24/25, resulting from the convex curvature, produces an unexpectedly significant stabilization of the K-factor of the nozzle insert 29a, b.
  • FIG. 7a a side view of the swirl body 51 with a partially isolated cross-section is shown.
  • the swirl body 51 is coated with extinguishing fluid on a first, inlet-side end face 75.
  • the flow is directed towards the surface.
  • a first part T 1 is diverted to the outer circumference of the swirl body 51 by several radially extending grooves 79. This is also shown in Figure 7b shown.
  • a second part T 2 flows without deflection to the outer circumference through a through-opening 81 to a second end face 83 of the swirl body 51.
  • the first partial flow T 1 is, as shown in particular in Figure 7c
  • the air is conveyed back towards the spray outlet 24/25 through several vortex channels 85 arranged eccentrically and radially parallel 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 outlet.
  • the two partial flows T1 and T2 are recombined and expelled together through the spray outlet 24/25.
  • the vortex channels 85 are preferably all offset by the same offset V to a respective radial.
  • the swirl channels 85 are inclined at an angle ⁇ relative to the outlet-side, second end face 83 of the swirl body 51.
  • the swirl channels 85 or the groove bases of the swirl channels 85 are aligned parallel to a seating surface 77 of the swirl body 51.
  • Figure 7e shows that the vortex channels 85 with a width B are provided in the swirl body 51 and are additionally pivoted by an angle ⁇ to the longitudinal axis L.
  • the preceding figures show a high-pressure spray nozzle 1 with a total of three nozzle inserts 29a, b, based on the above embodiment.
  • the invention also encompasses spray nozzles having a different number of nozzle inserts, for example five, seven or more, in which either each nozzle insert is aligned coaxially to the mounting direction M, or in which all nozzle inserts are aligned at an angle ⁇ to the mounting direction M, or in which one or more recesses 47 are not provided with a nozzle insert 29a, b or are closed with a blanking plug or similar sealing element.

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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)

Claims (13)

  1. Installation de lutte contre l'incendie (100) pour un conduit d'évacuation (5), en particulier pour une zone de cuisson, dans laquelle l'installation de lutte contre l'incendie (100) présente
    un conduit (5), qui présente deux parois latérales opposées (21, 23) et un côté d'entrée (7), ainsi qu'un côté de sortie (9) qui est espacé du côté d'entrée (7) et définit une direction (A) du flux d'air d'échappement du côté d'entrée (7) vers le côté de sortie (9), et
    une hotte (3) disposée côté entrée sur le conduit d'évacuation, en particulier associée à la zone de cuisson pour recevoir des vapeurs de cuisson de la zone de cuisson, qui présente deux parois latérales (17, 19) opposées, dans laquelle le côté d'entrée (7) du conduit (5) est relié de manière à acheminer un fluide à la hotte (3), dans laquelle
    au moins une buse de brouillard de pulvérisation (11, 13) est installée dans l'installation de lutte contre l'incendie (100),
    caractérisée en ce que
    - l'au moins une buse de brouillard de pulvérisation (11, 13) est installée sur une paroi latérale (17, 19 ; 12, 23) de la hotte (3) - en tant que buse de brouillard de pulvérisation de hotte (11) - ou du conduit (5) - en tant que buse de brouillard de pulvérisation de conduit (13),
    - dans laquelle la buse de brouillard de pulvérisation (11, 13) présente respectivement plusieurs sorties de brouillard de pulvérisation (24, 25) séparées, dans laquelle les sorties de brouillard de pulvérisation (24, 25) présentent respectivement un facteur K prédéfini et sont orientées selon un angle (β) les unes par rapport aux autres,
    - dans laquelle la buse de brouillard de pulvérisation (11, 13) présente une première sortie de brouillard de pulvérisation (24) qui est orientée verticalement sur la paroi latérale opposée (19) et deux deuxièmes sorties de brouillard de pulvérisation (25) qui sont orientées chacune selon un angle prédéfini (β) vers la première sortie de brouillard de pulvérisation (24),
    - dans laquelle les sorties de brouillard de pulvérisation (24, 25) de la buse de brouillard de pulvérisation de hotte (11) sont orientées horizontalement dans un plan (E2) et/ou parallèlement à l'ouverture d'entrée de la hotte (3), et les sorties de brouillard de pulvérisation (24, 25) de la buse de brouillard de pulvérisation de conduit (13) sont orientées parallèlement à la direction (A) du conduit dans un plan (E3), dans laquelle l'une des deuxièmes sorties de brouillard de pulvérisation (25) est dirigée à l'opposé du sens (A) du flux d'air d'échappement, et l'autre des deuxièmes sorties de brouillard de pulvérisation (25) est dirigée dans la direction (A) du flux d'air d'échappement,
    - dans laquelle le facteur K de la première sortie de brouillard de pulvérisation (24) de la buse de brouillard de pulvérisation de hotte (11) est supérieur aux facteurs K des deuxièmes sorties de brouillard de pulvérisation (25), dans laquelle la somme des facteurs K se situe dans une plage de 0,9 à 1,5,
    - dans laquelle le facteur K des première et deuxième sorties de brouillard de pulvérisation (24, 25) de la buse de brouillard de pulvérisation de conduit (13) est respectivement identique et est compris entre 0,2 et 0,5, ou
    - dans laquelle le facteur K de la première sortie de brouillard de pulvérisation (24) de la buse de brouillard de pulvérisation (13) est supérieur aux facteurs K des deuxièmes sorties de brouillard de pulvérisation (25) de la buse de brouillard de pulvérisation de conduit (13), dans laquelle la somme des facteurs K se situe dans une plage de 0,9 à 1,5.
  2. Installation de lutte contre l'incendie (100) selon la revendication 1,
    dans laquelle le facteur K de la première sortie de brouillard de pulvérisation (24) de la buse de brouillard de pulvérisation de hotte (11) se situe dans une plage de 0,6 à 0,9, et/ou
    dans laquelle le facteur K de la première sortie de brouillard de pulvérisation (24) est trois à quatre fois plus élevé que le facteur K des deuxièmes sorties de brouillard de pulvérisation (25) de la buse de brouillard de pulvérisation de hotte (11), et dans laquelle de préférence le facteur K des deuxièmes sorties de brouillard de pulvérisation (25) de la buse de brouillard de pulvérisation de hotte (11) se situe dans une plage de 0,15 à 0,25.
  3. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle une ou plusieurs buses de brouillard de pulvérisation de conduit (13) sont installées dans le conduit (5).
  4. Installation de lutte contre l'incendie (100) selon la revendication 3,
    dans laquelle la buse de brouillard de pulvérisation de conduit est montée sur le conduit de l'extérieur à travers un orifice de montage dans la paroi latérale, et le conduit présente un premier élément de positionnement sur un côté extérieur de la paroi latérale sur laquelle la buse de brouillard de pulvérisation de conduit est montée, et dans laquelle la buse de brouillard de pulvérisation de conduit présente un deuxième élément de positionnement correspondant, dans laquelle le premier élément de positionnement est positionné de telle manière par rapport à l'ouverture de montage que les deux éléments de positionnement, lorsqu'ils sont alignés l'un sur l'autre, entraînent une orientation en bonne et due forme du plan (Es) des sorties de brouillard de pulvérisation par rapport à la direction (A) du conduit.
  5. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle la hotte (3) présente une section transversale d'entrée dans une plage de 3 m2 à 5 m2 et une distance maximale de parois latérales (17, 19) horizontalement opposées dans une plage de 2 m à 4 m.
  6. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle le conduit (5) présente une section transversale d'écoulement dans une plage de 1 m2 à 2 m 2, et présente une distance maximale de parois latérales (21, 23) opposées horizontalement dans une plage de 1 m à 2 m.
  7. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle la buse de brouillard de pulvérisation de hotte (11) et une buse de brouillard de pulvérisation de conduit (13) installée de manière adjacente à celle-ci présentent une distance dans la direction (A) du flux d'air d'échappement dans une plage de 1 m à 3 m.
  8. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle plusieurs buses de brouillard de pulvérisation de conduit (13) sont installées dans le conduit (5), et présentent les unes par rapport aux autres une distance dans la direction (A) du flux d'air d'échappement dans une plage de 9 m à 11 m.
  9. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle les buses de brouillard de pulvérisation (11, 13) sont reliées de manière à acheminer un fluide à une alimentation en fluide d'extinction, dans laquelle les buses de brouillard de pulvérisation (11, 13) et l'alimentation en fluide d'extinction sont conçues pour une pression de service sur les buses de brouillard de pulvérisation (11, 13) dans une plage de 70 bar ou moins, de préférence dans une plage de 50 bar à 65 bar.
  10. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle le conduit (5) présente un coude (4, 6), et dans laquelle une buse de brouillard de pulvérisation de conduit est installée en aval et/ou en amont du coude (4, 6) et présente une distance par rapport au coude (4, 6) dans une plage de 6 m ou moins.
  11. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle la ou les buses de brouillard de pulvérisation (11, 13) sont réalisées en partie ou en totalité en acier inoxydable.
  12. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle les buses de brouillard de pulvérisation (11, 13) sont réalisées comme des buses d'extinction ouvertes.
  13. Installation de lutte contre l'incendie (100) selon l'une quelconque des revendications précédentes,
    dans laquelle un ou plusieurs capteurs de grandeurs caractéristiques d'incendie (14) sont installés sur la hotte (3) et/ou sur le conduit (5), et dans laquelle l'installation de lutte contre l'incendie (100) présente un dispositif de déclenchement qui est relié indirectement ou directement de manière à acheminer des signaux aux capteurs de grandeurs caractéristiques d'incendie (14) et qui est mis au point pour démarrer l'amenée d'agent d'extinction vers les buses de brouillard de pulvérisation (11, 13) dès que les capteurs de grandeurs caractéristiques d'incendie (14) ont détecté qu'une valeur de seuil de grandeur caractéristique d'incendie prédéfinie a été atteinte ou dépassée ou qu'une grandeur caractéristique d'incendie est présente.
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 EP3976206A1 (fr) 2022-04-06
EP3976206C0 EP3976206C0 (fr) 2025-12-24
EP3976206B1 true EP3976206B1 (fr) 2025-12-24

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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
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

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Country Link
US (1) US20230044995A1 (fr)
EP (2) EP4628170A1 (fr)
CN (1) CN219090917U (fr)
DE (1) DE102019114873A1 (fr)
WO (1) WO2020245139A1 (fr)

Families Citing this family (3)

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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
DE102019115392A1 (de) 2019-06-06 2020-12-10 Minimax Viking Research & Development Gmbh Löschdüsenadapter zur Montage einer Löschdüse an einer Wand, sowie Brandbekämpfungsanlage mit selbigem
DE102020119754A1 (de) * 2020-07-27 2022-01-27 HoZe Solutions GmbH Sprühmodul sowie Vorrichtung und Verfahren zur Bekämpfung eines Vegetationsbrands

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WO2018006000A1 (fr) * 2016-07-01 2018-01-04 Tyco Fire Products Lp Dispositif à buse de pulvérisation de brouillard d'eau à haute pression et procédés de fourniture d'un impact indirect et direct d'un incendie

Also Published As

Publication number Publication date
WO2020245139A1 (fr) 2020-12-10
US20230044995A1 (en) 2023-02-09
EP3976206C0 (fr) 2025-12-24
EP4628170A1 (fr) 2025-10-08
CN219090917U (zh) 2023-05-30
DE102019114873A1 (de) 2020-12-03
EP3976206A1 (fr) 2022-04-06

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