EP3359263A1 - Extincteurs pour systèmes d'extinction d'incendie - Google Patents

Extincteurs pour systèmes d'extinction d'incendie

Info

Publication number
EP3359263A1
EP3359263A1 EP16787743.0A EP16787743A EP3359263A1 EP 3359263 A1 EP3359263 A1 EP 3359263A1 EP 16787743 A EP16787743 A EP 16787743A EP 3359263 A1 EP3359263 A1 EP 3359263A1
Authority
EP
European Patent Office
Prior art keywords
sprinkler
sealing
closure element
fluid
sealing surface
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
EP16787743.0A
Other languages
German (de)
English (en)
Other versions
EP3359263B1 (fr
Inventor
Stefan Schnell
Frank Rönnfeldt
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 GmbH and Co KG
Original Assignee
Minimax GmbH and Co KG
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 GmbH and Co KG filed Critical Minimax GmbH and Co KG
Publication of EP3359263A1 publication Critical patent/EP3359263A1/fr
Application granted granted Critical
Publication of EP3359263B1 publication Critical patent/EP3359263B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/68—Details, e.g. of pipes or valve systems
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
    • A62C37/10—Releasing means, e.g. electrically released
    • A62C37/11—Releasing means, e.g. electrically released heat-sensitive
    • A62C37/14—Releasing means, e.g. electrically released heat-sensitive with frangible vessels
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing

Definitions

  • the present invention relates to a sprinkler for fire extinguishing systems according to the preamble of claim 1.
  • Predesigned sprinklers are well known and are used both as high pressure or low pressure sprinklers. These types of sprinklers have in common that they often remain unactuated for very long periods of time after their initial installation. In the best case, such sprinklers are unused due to the absence of fire during their entire life. It has been found in known types of sprinklers that the seals used in the sprinklers tend over time in extreme cases to adhere to the sealing surface and thus complicate an opening of the closure elements or even prevent when the sprinklers are used once in case of fire got to. Furthermore, it has been found that the known seals in some situations in which an opening, although difficult, but not prevented, partially or completely fall apart in extreme cases. Individual parts of the sealing elements then move freely inside the sprinklers and can potentially clog the fluid outlets.
  • the invention has the object to provide a sprinkler, in which the aforementioned disadvantages are mitigated as much as possible.
  • the invention has the object to provide a sprinkler, in spite of the long service life, the error-free operation is not affected.
  • a sprinkler is proposed with a sprinkler housing, a fluid channel provided in the sprinkler housing with a fluid inlet and at least one fluid outlet, a closure element which is movable from a blocking position to a release position, wherein the closure element closes the fluid channel in the blocking position and in the release position releases a thermally activated triggering element, which holds the closure element until the thermal activation in the blocking position, and a sealing element, which is arranged between the sprinkler housing and the closure element, and is adapted to fluid-tightly close the fluid channel in the blocking position, wherein the sealing element is compressed radially and axially in the blocking position for applying the sealing effect.
  • Closing the fluid channel in this context means that a fluid-conducting connection is interrupted from the fluid inlet to the fluid outlet in the blocking position while it is in the release position.
  • the thermal triggering element is preferably such that it is destroyed by thermal action or changes its structure.
  • the thermally activated triggering element of a sprinkler ampoule in particular a fluid-filled glass ampoule is.
  • the thermally activatable triggering element is designed as a fusible link or metal element with memory properties, for example as a bimetallic element
  • the invention is based on the finding that in known seals due to the sometimes very high contact pressures (in particular during operation of the sprinklers as high-pressure sprinklers) over time, changes in the material properties of the sealing elements occur, on the one hand lead to setting operations of the sealing elements on the surface structure of the adjacent sealing surfaces , and on the other hand lead to encrustations or embrittlement of the material itself. If the sprinkler is then actuated, the adhesions, incrustations and the like oppose the opening movement of the closure element to an increased resistance. In addition, it has been recognized that in sprinklers that use known sealing elements, the sealing elements are always compressed either exclusively radially or exclusively axially to produce the sealing effect.
  • the sealing element Especially with radially compressed sealing elements, the sealing element must be moved for releasing the fluid channel a comparatively long distance in the release direction along the sealing surface. As a result, the sealing element is subjected to a high shear load, which firstly results in increased resistance to movement and, secondly, the risk of partial or complete destruction of the sealing element, with the disadvantageous effect of releasing particles inside the sprinkler.
  • the invention applies precisely here, by providing an arrangement of the sealing element, in which the sealing element is compressed both radially and axially.
  • the sprinklers according to the invention designed in this way show, in terms of their opening behavior, an already much reduced susceptibility to errors due to the lower tendency of the sealing elements to adhere and a significantly lower risk of destruction of the sealing elements, which is associated with an increased reliability of the sprinklers.
  • the thermally activatable triggering element is preferably adapted to abandon the resistance to the movement of the closure element from the blocking position when a predefined temperature is exceeded, whereupon the closure element can move from the blocking position into the release position and the extinguishing fluids flow out of the fluid outlets through the fluid channel can.
  • the sprinkler is preferably mounted on the side of the fluid inlet, either directly or indirectly via an adapter, to an extinguishing fluid carrying pipeline.
  • the invention is advantageously developed by the sealing element is pressed in the blocking position against a widening in a release direction A sealing surface. Under the release direction A is in this case understood the direction of movement of the closure element from the blocking position to the release position. Under the widening in the release direction sealing surface is understood that the surface normal of the sealing surface with respect to the release direction A has an angle not equal to 90 °.
  • the widening sealing surface is preferably conical, at least in sections, and / or convexly curved, and / or concavely curved.
  • a convex curvature here means a progressive expansion in the release direction, while a concave curvature means a degressive widening in the release direction A.
  • the common advantage of the different configurations of the widening sealing surface is that the sealing element no longer touches the widening sealing surface after an extremely short stroke out of the blocking position.
  • the sealing element in contrast to known from the prior art, only radially loaded sealing elements so no longer over extended distances in the axial direction (ie in the release direction A) are pushed along the sealing surface. This leads on the one hand to a significantly reduced tripping resistance and on the other hand to a significantly reduced Danger of destruction of the sealing element when opening. Both contribute directly to the increased reliability of the sprinkler in total.
  • the first sealing element is formed from a list consisting of: O-ring, O-ring with support ring, quadring, multi-lip seal, in particular X-ring or V-ring, U-ring, vulcanized sealing element, or as a combination of several of these sealing elements ,
  • the widening sealing surface is preferably formed on the sprinkler housing.
  • the closure element has an axially extending sealing surface, against which the sealing element is pressed in the blocking position. Further preferably, the closure element has a radially extending sealing surface, against which the sealing element is pressed in the blocking position.
  • the axial and / or radial sealing surfaces are in this case mating surfaces to the widening sealing surface, wherein the primary sealing effect is generated at the widening sealing surface, wherein the one or both other sealing surfaces act primarily as an abutment, and secondarily as sealing surfaces. They do, however, make an important contribution to minimizing the size of the primary sealing surface.
  • the cone-shaped section preferably has a cone angle a1 which is in an angular range of 5 ° to 60 °, preferably 10 ° to 40 °, particularly preferably 20 ° to 30 °.
  • the sprinkler housing has a main body and a passage unit.
  • the fluid inlet and / or the widening sealing surface are formed on the passage unit.
  • the passage unit is preferably reversibly detachably connected to the base body, for example by means of a screw connection. This allows an economically favorable production of the base body, for example as a casting, and also an economical machining production of the passage unit.
  • an aperture for the passage of the extinguishing fluid in the direction of the sealing surface or of the closure element in the assembled state is provided on the passage unit.
  • the main body preferably has a connection unit for fastening the sprinkler to an extinguishing fluid supply, ie the extinguishing fluid-carrying piping system, in particular with a receiving channel for receiving the fluid inlet channel, and a nozzle head and a cage, wherein in the interior of the nozzle head, a distribution chamber is formed, from which the at least one fluid outlet extends.
  • the cage preferably defines a cage space for receiving the thermal trigger element.
  • an abutment for receiving and axial positioning of the thermal triggering element in the sprinkler relative to the closure element is provided on the cage, in particular integrally formed.
  • the closure element has a second, in the release direction A tapered sealing surface
  • the sprinkler housing in particular the base body, has a tapered in the release direction A third sealing surface, wherein the second and third sealing surface in the release position of the closure element, preferably fluid-tight, lie against each other.
  • the second and third sealing surfaces tapered in the release direction form an elastomerless seal.
  • the second and third tapered sealing surfaces have substantially corresponding surface contours. If the second and third tapered third surfaces are conical, for example, it is preferred if the cone angle of the two tapered sealing surfaces deviates from one another by only a few degrees, preferably in a range of less than 5 ° in absolute terms.
  • the sprinkler housing has a recess through which the closure element extends at least in the release position, wherein in the release position between the closure element and the recess a protective chamber is defined, in which the sealing element is arranged.
  • the most effective protective measure for the sealing element is to remove it as far as possible in the triggering case, ie when the closure element is in the release position, from the main flow which extends from the fluid inlet to the fluid outlet (s).
  • a protective chamber between the Recess for receiving the closure element and the sealing element created within which the sealing element is arranged.
  • the sealing element is in the release position according to the invention within the recess for receiving the closure element in a flow-calmed area. Due to the inlet into this recess, the sealing element is subjected to less severe stresses by the fluid flow of the extinguishing fluid, and the risk of partial but complete destruction of the sealing element is greatly reduced.
  • the sprinkler housing has a distribution chamber from which both the recess for receiving the closure element and the at least one fluid outlet branch off, wherein the recess for receiving the closure element in a first direction, preferably equal to the release direction A, extends and the at least one fluid outlet extends in a different direction from the first direction of the second direction.
  • the sealing element is in the release position of the closure element de facto outside the distribution chamber in a "side arm" which is due to the fact that the main flow in the direction of the fluid outlets takes place less flowed.
  • turbulence forms around the recess for receiving the closure element in the recess and around the recess, which further reduces the flow load on the sealing element.
  • the at least one fluid outlet is arranged radially outside and / or in the release direction A before the recess for receiving the VerMartinele- element.
  • a dead space is formed below the fluid outlets during operation, in which flow moves primarily turbulent.
  • the closure element has a circumferential groove in which the sealing element is seated.
  • the circumferential groove provides a recess for receiving the sealing element, which receives this radially partially or completely into the closure element, whereby a further shielding of the sealing element is provided by the surrounding fluid flow.
  • the closure element preferably has, opposite to the release direction A adjacent to the circumferential groove receiving the sealing element, a projection for protecting the sealing element from flow influences in the release position. The projection forms the edge of the groove in the direction of the distribution chamber from the groove, in which the sealing element is seated.
  • a flow deflector is formed on the projection.
  • the flow deflector is preferably configured to serve as a baffle element for the extinguishing fluid entering the distribution chamber and to generate turbulence.
  • the flow deflector preferably extends counter to the release direction A into the distribution chamber. Further preferably, the flow deflector is adapted to deflect into the distribution chamber inflowing extinguishing fluid from the first direction in which the recess is aligned.
  • the flow diverter is configured to divert extinguishing fluid entering the distribution chamber to the second direction in which the fluid outlet (s) are aligned.
  • the projection preferably has a diameter of at least the sum of a basic diameter of the groove, which receives the sealing element, and half the material thickness in the radial direction of the sealing element. This ensures good protection and at the same time a reliable seat of the sealing element in the groove.
  • the sprinkler housing is advantageously further developed in that the at least one fluid outlet is formed as a bore, or alternatively as a reversibly releasably coupled insert element, which has a swirl body in particularly preferred embodiments. Due to the design as an insert element, a wide variety of fluid delivery patterns, for example spray cones, can be realized.
  • the sprinkler housing according to the present invention, a cage, which defines a cage space for receiving the closure element in the release position, as well as for receiving a thermally activated triggering element in the blocking position.
  • this embodiment allows the use of the sprinkler housing as an open extinguishing nozzle, if the use of the thermally activated triggering element is dispensed with.
  • the closure element is permanently mounted in the installed position of the sprinkler housing in the release position, which is not disadvantageous because the sealing element is arranged in the protective chamber.
  • this embodiment allows the use of the sprinkler housing together with a thermally activated triggering element inserted into the cage space in a sprinkler, in particular on a high-pressure sprinkler. Consequently, the invention solves its underlying object also in a sprinkler of the type described by a sprinkler housing is used on it, which is designed according to one of the preferred embodiments described above.
  • the invention solves its underlying object in the second aspect by the use of a sprinkler housing according to one of the preferred embodiments described above as an extinguishing nozzle, in particular as extinguishing nozzle for operating pressures in the range of above 16 bar.
  • the invention proposes that the sprinkler housing has a fluid channel with a fluid inlet and at least one fluid outlet, a distributor chamber from which the at least one fluid outlet branches off, and a cage which defines a cage space for accommodating a thermally activatable trigger element the distribution chamber and the cage are formed as a one-piece body and on the cage a repository for axial and preferably radial positioning of the thermally activated trigger element is formed.
  • the cage with its cage space is used in the context of the invention to receive the thermally activated triggering element in a blocking position of the sprinkler housing, and after destruction of the thermally activated triggering element, a closure element that is provided in the sprinkler housing, and of a Locking position is movable into a release position, wherein in the blocking position, the closure element closes the fluid channel and releases in the release position.
  • the invention makes use of the fact that the one-piece design of the distribution chamber and the cage as the basic body together with the rebate formed on the cage creates a component with high functional integration, which can be produced economically and at the same time minimizing the risk of contaminants entering the interior of the sprinkler housing.
  • this approach achieves the result that the thermally activatable triggering element only needs to be inserted into the cage.
  • the cage already contains an abutment for the axial and preferably radial positioning of the thermally activated trigger element, so that a separate adjustment of the axial position and the holding voltage of the thermally activated trigger element relative to the sprinkler housing is no longer necessary.
  • the closure element is adapted to be held in the blocking position with mounted thermally activated triggering element until its release by means of the thermally activated triggering element.
  • the thermally activatable triggering element is held between the closure element and the abutment of the cage, so that the voltage acting on the thermally activatable triggering element results exclusively from the dimensioning of the closure element and the fluid pressure on the inlet side of the fluid channel.
  • Both the fluid pressure and the dimensioning of the closure element can be predefined with high reliability and set in production, so that the risk of incorrect assembly of the thermally activated trigger element, which would have its unwanted failure result, can be largely excluded.
  • the sprinkler housing has a closure element which is movable in a release direction A from a blocking position into a release position, wherein the closure element closes the fluid channel in the blocking position and releases it in the release position, wherein the sprinkler housing, in particular the main body, a recess, through which the closure element extends at least in the release position in the direction of the cage, wherein the closure element is adapted to be held with mounted thermally activated triggering element until its release in the blocking position.
  • the closure element preferably also has an abutment for axial positioning, facing the latter in the assembled state of the thermally activatable triggering element.
  • the recess for receiving the closure element branches off from the distribution chamber, wherein the recess for receiving the closure element preferably extends in the release direction A.
  • the base body consists of one of the following materials: copper alloy, preferably brass, in particular seawater resistant brass, or bronze, in particular seawater resistant bronze; non-alloyed or alloyed, in particular stainless, steel; Cast iron material; Stainless steel; Aluminum or aluminum alloy; Die-cast zinc; Titanium or titanium alloy; Magnesium or magnesium alloy; Sintered metal material; Ceramic material; Plastic, in particular thermoplastic, thermoset, liquid crystal polymer, wherein the plastic preferably each has a melting point above 190 ° C, more preferably above 400 ° C, more preferably above 600 ° C; or composite material, in particular glass fiber reinforced Kusentstoff or carbon fiber reinforced plastic, preferably with the aforementioned melting points.
  • CuZn20Al2As, CuZn36Pb2As, CuZn21Si3P, CuZn38As, CuZn33Pb1AISiAs or CuZn33Pb1, 5AIAs is preferably used.
  • As seawater resistant bronze is preferably lead bronze, for example.
  • the main body of the sprinkler housing at least in the region of the at least one fluid outlet and / or the distribution chamber, and preferably completely, a metallic coating.
  • the metallic coating has a layer thickness in a range of 0, 1 to 125 ⁇ on.
  • the main body is in the range described above or completely chemically metallized.
  • chemical nickel plating has been found. The chemical nickel coating is preferably applied according to DIN EN ISO 4527.
  • a nickel-phosphorus alloy coating is applied over the base material by means of autocatalytic deposition, wherein the surface of the body can be prepared either mechanically or by means of acid treatment (for example, chloric acid treatment) to achieve better adhesion of the coating.
  • acid treatment for example, chloric acid treatment
  • a base body is obtained which can be successfully subjected to a clogging test without being damaged due to the abrasive test medium.
  • the sprinkler housing according to this aspect and the sprinkler housing according to the above-mentioned one-piece aspect preferably have the same preferred embodiments and are preferred embodiments from each other.
  • the base body is heat-treated at least in the region of the at least one fluid outlet and / or the distributor chamber. With the help of a heat treatment, the surface hardness achieved by chemical metallization can be further increased. This is particularly advantageous for those base materials are used, which are not curable out of themselves, for example, the copper alloys.
  • the base body is heat-treated at a temperature below the melting point of the material of the base body, preferably in a range of 190 ° C up to 600 ° C, depending on the material of the base body, and with a holding time of half an hour or more, more preferably in the range of one to twenty hours.
  • the invention solves its underlying object in a sprinkler of the type described, in particular in a high-pressure sprinkler (with operating pressure above 16 bar), with a sprinkler housing according to one of the preferred embodiment described above, and a recorded in the cage thermally activated trigger element, which up to its activation holds the closure element in the locked position.
  • the invention solves the underlying task according to the third aspect further by specifying a use of the sprinkler housing as an extinguishing nozzle, in particular a sprinkler nozzle according to one of the preferred embodiment described above, wherein the extinguishing nozzle is designed in particular for operating pressures in the range of above 16 bar.
  • the preferred embodiments according to the first aspect are also preferred embodiments according to the second and third aspects.
  • the preferred embodiments according to the second aspect are also preferred embodiments according to the first and third aspects.
  • the preferred ones Embodiments according to the third aspect are also preferred embodiments according to the first and second aspects.
  • Figure 1 is a schematic representation of a sprinkler in a first
  • FIG. 2 shows a partial view of the sprinkler according to FIG. 1,
  • FIG. 3 shows a further partial view of the sprinkler according to FIG. 1,
  • FIG. 4 shows a further partial view of the sprinkler according to FIG. 1,
  • FIG. 5 shows a schematic view of the sprinkler according to FIG. 1 in a second operating state
  • Figures 6a, b is a partial view of the sprinkler according to the preceding figures in the first operating state and a third operating state
  • FIGS. 7a-f show various alternative designs of a part of the sprinkler according to FIGS. 1 to 6.
  • FIG. 1 shows a sprinkler 1 according to a preferred embodiment.
  • the sprinkler 1 has a sprinkler housing 50.
  • the sprinkler housing 50 comprises a main body 2, a passage unit 3, and a fluid channel 12 which extends from a fluid inlet 10 to a plurality of fluid outlets 8.
  • a closure element 4 is arranged to be linearly movable inside the sprinkler housing 50.
  • the closure element 4 is shown in FIG. 1 in a blocking position in which a sealing element 5 radially and axially compressed between the closure element 4 and the passage unit 3 closes the fluid channel 12 and thus prevents the fluid-conducting connection between the fluid inlet 10 and the fluid outlets 8.
  • a diaphragm 1 1 is preferably designed to limit the flow velocity.
  • the closure element 4 is held in the blocking position shown in FIG. 1 by a thermally activatable triggering element 25.
  • the thermally activatable triggering element 25 is held in a cage 27, which is integrally formed on the sprinkler housing 50, in particular on the base body 2.
  • the cage 27 has a first abutment 28 for the axial, and preferably radial, positioning of the thermally activated triggering element 25, while the closure element 4 at its end facing the thermal activatable trigger element 25 preferably a second abutment 29 for the axial and / or radial positioning of the thermally activatable trigger element 25 has.
  • the thermally activatable triggering element 25 is seated in a cage space 31 defined by the cage 27 and is inserted and held there without screwing.
  • the necessary tension for holding the thermally activatable triggering element 25 is determined exclusively by the dimensioning of the closure element 4 and the pressure force acting in the release direction A (FIG. 5) of the extinguishing fluid above the sealing element 5 in the fluid channel 12 (reference numeral 33).
  • a receiving channel 16 for receiving a sieve unit 9 on the side of the fluid inlet 10, and a distribution chamber 15 are formed. From the distribution chamber 15 branch off the fluid outlets 8 and a recess 17 for receiving the closure element 4 from.
  • the sprinkler housing 50 has a connection unit 38 with a coupling mechanism 26, preferably an external thread, wherein the connection unit 38 serves to connect the sprinkler 1 to an extinguishing fluid-carrying piping system.
  • the sprinkler 1 has a sealing element 6.
  • the passage unit 3 is further sealed by means of a sealing element 7 against the base body 2.
  • the base body 2 has a nozzle head 39 adjacent to the portion of the connection unit 38.
  • the distribution chamber 15 is formed with the fluid outlets 8.
  • Axially adjacent to the portion of the nozzle head 39 of the cage 27 is integrally formed on the base body 2, so that the base body 2 together with the distribution chamber 15 and cage 27 is integrally formed.
  • the fluid outlets 8 extend in one or more second directions B and B 'deviating from the release direction A, while the recess 17 extends in the direction Release direction A extends.
  • the extinguishing fluid flowing into the distribution chamber 15 in the release direction A indicated by reference numeral 33, initially flows in the direction of the recess 17, and must be deflected from this direction for exiting the fluid outlets. This will be discussed in more detail with reference to FIG.
  • a tapered in the release direction A sealing surface 19 is formed.
  • the tapered sealing surface 19 is conically shaped with a cone angle a 2 .
  • the closure element 4 shown in more detail in Figure 4 has a in the assembled state in the release direction A also tapered sealing surface 32 which is conical in the above embodiment and has a cone angle a 3 .
  • the cone angle a 2 and a 3 preferably do not deviate from one another or only slightly, in particular in a range of ⁇ 5 °.
  • the preferably correspondingly formed tapered sealing surfaces 19, 32 serve as a stop for the closure element in the release position according to FIG. 5. Preferably, they form an elastomerless seal 35.
  • a widening in the release direction A sealing surface 18 is formed.
  • the widening sealing surface 18 is conically shaped with a cone angle ⁇ ⁇ , The diameter of the fluid channel 12 thus becomes continuously larger in the release direction A in the course of the widening sealing surface 18.
  • the sealing element 5 bears against the widening sealing surface 18 and is compressed both radially and axially relative to the release direction A due to the non-parallel course of the widening sealing surface 18.
  • a first pressure P-1 is applied to the sprinkler 1 on the inlet side.
  • This pressure is also known as stand-by pressure, and can for example, in a range of 10-13 bar, preferably ⁇ 12.5 bar.
  • the sealing element 5 assumes a material thickness S. If the pressure rises to a value P 2 , shown in FIG. 6 b, the sealing element 5 is first compressed further and pressed more strongly in the direction of the widening sealing surface 18 and the radially extending sealing surface 30. The effective area of the operating pressure on the closure element is increased in this way.
  • the passage unit 3 which receives the expanding in the release direction
  • a sealing surface 18 is preferably made as a machined workpiece and has on its outer peripheral surface a groove 13 for receiving the sealing element 7 ( Figure 3).
  • extinguishing fluid 33 presses in the release direction A into the distribution chamber 15.
  • the closure element 4 is located in the release pitch shown in Figure 5 below.
  • a protective chamber is formed between the closure element 4 and the branching recess 17, in which the sealing element 5 is received.
  • the protection chamber 17 is located away from the main flow direction from the fluid inlet to the fluid outlets 8 because they extend in the direction B, B 'deviating from the release direction A (see FIG. 2).
  • the sealing element 5 is located in the release parting of the closure element 4 in a flow-calmed region and is less exposed to wear due to the rapidly flowing flow of the extinguishing fluid.
  • the closure element 4 has a circumferential groove, characterized by the axially extending sealing surface 36 as a groove bottom. In this groove, the sealing element 5 is added. As a result of the at least partially recessed arrangement of the sealing element 5 on the closure element 4, exposure to the flow of the extinguishing fluid forced in the direction of the fluid outlets 8 is further reduced. Contrary to the release direction A adjacent to the groove 36, a projection 21 is formed on the closure element, which protects the sealing element 5 against flow influences in the release position.
  • a flow deflector 37 is particularly preferably formed, which extends counter to the release direction A.
  • the flow deflector 37 preferably extends through the aperture far into the fluid channel 12 in the direction of the fluid inlet 10.
  • the flow deflector 37 extends at least for the most part through the distribution chamber 15 in Direction of the fluid inlet 10.
  • inflowing extinguishing fluid is at least slowed down by the flow deflector 37, whereby the dynamic pressure component of the extinguishing fluid decreases and the load of the sealing element 5 decreases even further or the sealing element 5 is even more shielded.
  • the protected arrangement of the sealing element 5 shown here in the protective chamber between the recess 17 and the closure element 4 makes it possible to use the sprinkler housing 50 without the prior insertion of a thermally activatable triggering element 25 as an open extinguishing nozzle.
  • the closure element 4 is preferably designed as a rotationally symmetrical body with a plurality of sections, four sections in the present example.
  • a first portion is the projection 21 with a diameter d1.
  • a second section 22 is present with a diameter d2 and is adapted to receive the sealing element 5.
  • the axial sealing surface 36 and the radial sealing surface 30 are formed.
  • the radial sealing surface 30 is at the same time the transition to a third section 23 with an outer diameter d3 and in the release direction A tapered portion with the sealing surface 32.
  • a further section extends with a cylindrical course in the form of a receiving cylinder 24.
  • the receiving cylinder 24 is adapted to move into the cage space 31 of the cage 27 when moving the closure element from the blocking position (FIG. 1) to the release position (FIG. 5) penetrate.
  • the second abutment 29 is preferably formed in this receiving cylinder 24.
  • the diameters d 1, d 2, d 3 and d 4 preferably have the following size relationship:
  • D1 is larger than d2, d2 is smaller than d3, and d3 is larger than d4.
  • the second region 22 with the diameter d2 is adapted in its length to the material thickness of the sealing element 5.
  • the difference d3 - d2 is greater than the material thickness of the sealing element 5 in the unloaded state.
  • the diameter d3 is greater than the outer diameter of the sealing element 5 in the unloaded state.
  • the diameter d3 dimensioned radially extending sealing surface 30 thus serves as a stop surface for the closure element and also serves when pressing the first sealing member 5 to the widening sealing surface 18, too much deformation and shearing of the sealing element 5, or slipping of the sealing element. 5 to prevent it from fitting out of the groove during assembly.
  • the groove characterized by the axially extending sealing surface 36 in the second region 22 is to be understood as an asymmetrical groove.
  • the diameter d2 is in a range of 1, 5 to 50 mm, more preferably in a range of 2 to 12 mm, more preferably in the range of 12 mm to 30 mm.
  • FIGS. 7a to 7f a position is taken in addition to the structure of the closure element 4.
  • the different variants of the closure element 4 are shown in FIGS. 7a to 7f.
  • the basic structure of the closure element 4 is similar in all these variants.
  • the essential exception is the expression of the projection 21 and the flow deflector 37 thereto.
  • a conical tip 37b is formed on the projection 21, which advantageously supports the deflection of the extinguishing fluid entering the distribution chamber 15 radially outwards towards the fluid outlets 8.
  • a tip 37c with a concavely curved lateral surface 42 is formed on the projection 21 of the closure element 4.
  • the concave curvature supports the deflection of the fluid in the direction of the fluid outlets 8 and reduces the impact of the impinging fluid on the projection 21.
  • a variant of the closure member 4 is shown in which at the projection 21 also has a tip 37d with concave curved surface 43 is formed, wherein the concavely curved lateral surface opens into a concave recess 44 on the end face 40, which supports a deflection of the incident on the projection 21 fluid against the release direction A.
  • the sprinkler housing 50 has a base body 2, in which both the distribution chamber 15 with the fluid outlets 8 and the cage 27 are integrally formed with the cage space 31, a thermally activated release means 25 can be used and then only by mounting the closure element, preferably in the abutments 28,29, be kept safe.
  • An insertion and Distortion of the thermally activated triggering element by means of threaded pins and similar means, as they are known from the prior art, can be omitted here. During assembly work steps are saved, and the risk of premature damage to the thermally activated trigger element by excessive clamping force is prevented.
  • the integral body 2 is preferably formed of a seawater resistant copper alloy such as seawater resistant brass or any of the other materials mentioned above. However, particularly preferred is the seawater resistant copper alloy.
  • the base body is at least in the region of the fluid outlets, but preferably completely, chemically nickel-plated.
  • a nickel-phosphor coating is applied to the base material in an autocatalytic deposition.
  • this coating is then cured by means of a heat treatment.
  • the residence time and temperature of the heat treatment is in this case preferably adapted to the melting point of the base material. If polymers are used as base material, the temperature of the heat treatment is inherently lower than for metals such as a brass material.
  • the coating created by means of chemical nickel plating has the special advantage that with its help the abrasion resistance of self-hardening non-hardenable materials such as brass can be significantly increased. As a result, the benefits of different materials by sprinkler systems are linked together favorably.
  • the combination of integrality with the aforementioned material selection and heat treatment has the particular advantage that the sprinkler housing 50 as a whole is significantly less susceptible to clogging.
  • the fluid outlets do not or only slightly change in terms of their flow rates during operation. This applies on the one hand to reducing the outlet cross section through blockages (therefore clogging) but on the other hand also to increasing the outlet cross section by abrasion.
  • the risk of increasing the outlet cross-sections is usually greater than a blockage. Due to the increased hardness in connection with the corrosion resistance of the base material and the coating, the invention provides in a one-piece body in this respect surprisingly good properties.

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)

Abstract

L'invention concerne un extincteur (1) comprenant un corps, un canal de fluide situé dans le corps de l'extincteur et pourvu d'une entrée de fluide (10) et d'au moins une sortie de fluide (8), un élément de fermeture (4), lequel peut être déplacé d'une position de blocage dans une position de libération, l'élément de fermeture (4) fermant le canal de fluide dans la position de blocage et le libérant dans la position de libération, un élément de déclenchement (25) pouvant être activé thermiquement, lequel maintient l'élément de fermeture (4) dans la position de blocage jusqu'à l'activation thermique, et un élément d'étanchéité (5), lequel est agencé entre le corps d'extincteur et l'élément de fermeture (4) et conçu pour fermer le canal de fluide de manière étanche au fluide dans la position de blocage. Selon l'invention, l'élément d'étanchéité (5) est comprimé radialement et axialement dans la position de blocage pour appliquer l'effet d'étanchéité.
EP16787743.0A 2015-10-05 2016-10-04 Gicleur pour systèmes d'extinction d'incendie Active EP3359263B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015219208.3A DE102015219208A1 (de) 2015-10-05 2015-10-05 Sprinkler für Feuerlöschanlagen
PCT/EP2016/073680 WO2017060244A1 (fr) 2015-10-05 2016-10-04 Extincteurs pour systèmes d'extinction d'incendie

Publications (2)

Publication Number Publication Date
EP3359263A1 true EP3359263A1 (fr) 2018-08-15
EP3359263B1 EP3359263B1 (fr) 2023-05-10

Family

ID=57208248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16787743.0A Active EP3359263B1 (fr) 2015-10-05 2016-10-04 Gicleur pour systèmes d'extinction d'incendie

Country Status (10)

Country Link
US (1) US10888725B2 (fr)
EP (1) EP3359263B1 (fr)
JP (1) JP2018531128A (fr)
KR (1) KR20180093887A (fr)
CN (1) CN108136241B (fr)
AU (1) AU2016334712A1 (fr)
BR (1) BR112018006828A2 (fr)
CA (1) CA3000317A1 (fr)
DE (1) DE102015219208A1 (fr)
WO (1) WO2017060244A1 (fr)

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* Cited by examiner, † Cited by third party
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US12194326B2 (en) * 2018-08-17 2025-01-14 Minimax Viking Patent Management Gmbh Automatic fire sprinklers, systems and methods for suppression fire protection of high hazard commodities including commodities stored in rack arrangements beneath ceilings of up to fifty-five feet in height
CN110821367B (zh) * 2018-08-20 2020-10-30 长荣金属科技(海安)有限公司 一种防火的隔热宿舍用安全门以及防火隔热方法
AU2021217497B2 (en) * 2020-02-07 2026-03-26 Tyco Fire Products Lp Systems and methods of polymeric sprinklers
CN112121333B (zh) * 2020-09-24 2021-11-09 武汉川消智慧消防科技有限公司 感温自启动灭火装置及应用该装置的电气设备灭火系统
US20240238632A1 (en) * 2023-01-13 2024-07-18 Victaulic Company Compact sprinkler
GB2644076A (en) * 2024-09-16 2026-03-18 I Mist Holdings Ltd Nozzle for water-based fire suppression system

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DK0797465T3 (da) 1994-05-17 2000-04-25 Goeran Sundholm Sprinklerhoved
FI97864C (fi) 1994-09-14 1997-03-10 Goeran Sundholm Sprinkleri
CN2322653Y (zh) 1998-02-27 1999-06-09 中国科学院固体物理研究所 形状记忆合金自动洒水喷头
DE19812994B4 (de) 1998-03-25 2005-10-06 Ulrich Ziller Bauteil-Feuerschutzeinrichtung
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FI112037B (sv) 1999-12-22 2003-10-31 Marioff Corp Oy Spruthuvud
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FI110578B (fi) 2001-06-19 2003-02-28 Marioff Corp Oy Sprinkleri
FI20030620A7 (fi) 2003-04-24 2004-10-25 Marioff Corp Oy Laitteisto väliaineen kulkutien sulkemiseksi ja suihkutuspää
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UA98024C2 (uk) 2007-12-07 2012-04-10 ДИНАМИТ НОБЕЛЬ ДИФЕНС ГмбХ Тепловий спусковий механізм зі скляною ампулою для генератора вогнегасного аерозолю та спосіб приведення в дію генератора вогнегасного аерозолю
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Also Published As

Publication number Publication date
AU2016334712A1 (en) 2018-05-17
CN108136241B (zh) 2022-03-15
DE102015219208A1 (de) 2017-04-06
US20180304109A1 (en) 2018-10-25
BR112018006828A2 (pt) 2018-10-16
JP2018531128A (ja) 2018-10-25
EP3359263B1 (fr) 2023-05-10
CA3000317A1 (fr) 2017-04-13
KR20180093887A (ko) 2018-08-22
CN108136241A (zh) 2018-06-08
WO2017060244A1 (fr) 2017-04-13
US10888725B2 (en) 2021-01-12

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