EP2675533A2 - Buses d'extinction insonorisées - Google Patents

Buses d'extinction insonorisées

Info

Publication number
EP2675533A2
EP2675533A2 EP12712996.3A EP12712996A EP2675533A2 EP 2675533 A2 EP2675533 A2 EP 2675533A2 EP 12712996 A EP12712996 A EP 12712996A EP 2675533 A2 EP2675533 A2 EP 2675533A2
Authority
EP
European Patent Office
Prior art keywords
outflow
outflow opening
openings
extinguishing
nozzle
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.)
Withdrawn
Application number
EP12712996.3A
Other languages
German (de)
English (en)
Inventor
Francois BRYON
Miguel Angel COLL
Michael HÖGE
Erhard Magori
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.)
Siemens Schweiz AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP2675533A2 publication Critical patent/EP2675533A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/042—Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane of the jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/046—Outlets formed, e.g. cut, in the circumference of tubular or spherical elements

Definitions

  • the invention relates to a device for outflow of an extinguishing medium.
  • the number and the hole diameter can be adapted to the respective extinguishing application and the room size.
  • Ins ⁇ special calculates the number holes for individually. Manufacturer-specific calculation rules or programs are used to calculate the number holes that comply depending on the country, additional regulatory requirements and Che ⁇ levies.
  • the extinguishing nozzle design also depends on the type of extinguishing medium, whether it is a gas or a liquid.
  • the nozzle shape can be supplemented for example by Strahlformengeomet ⁇ rien, such as baffles.
  • z. B. for a quenching gas and a throttle device may be provided in the extinguishing nozzle. All previous extinguishing nozzles have the problem that it comes in a deletion process to a large noise. Since a noise level of up to 140 dB can be achieved with different nozzles, this noise level is within a range that can damage the human ear. And even devices in a room to be deleted are at risk. Even with rechtzeiti ⁇ ger evacuation of all persons from a room to be deleted, the high noise level is a problem for the stability of about the hard drives in computing or data centers. It has been shown that hard drives already from a noise ⁇ level of 120 dB partially even work incorrectly from 110 dB. At a higher noise level, permanent damage or even destruction can occur.
  • the extinguishing nozzles downstream of silencer which are additionally flowed through.
  • sintered bodies are also used for this purpose.
  • the flow through another component greatly reduces the flow velocity.
  • certain sound-damping devices are not suitable for chemical extinguishing media, since their evaporation is then not guaranteed.
  • ge ⁇ ensures sufficient mixing of the room air with the extinguishing gas when the flow rate is too strong deposed ago ⁇ .
  • the device according to the invention serves for the outflow of an extinguishing medium.
  • the device has at least one outflow opening, wherein the outflow opening has a geometry, so that a outflow through this outflow opening the medium assumes a beam shape which is at least one extension perpendicular to the direction of propagation less than the lower limit of the wavelength of the audible by the human Ge ⁇ audible acoustic spectrum.
  • the outflow opening has a geometry which, in at least one extent, is less than the lower limit of the wavelength of the acoustic spectrum perceivable by the human ear.
  • the extinguisher nozzle is so designed in particular, that the cross section of the extinguishing agent jet is very narrow at least in one Rich ⁇ processing, that is, that a very flat jet of the extinguishing medium is flowed out, and can not form flow eddies characterized in the free jet which ⁇ at AKUS table frequencies could radiate sound waves.
  • the outflow opening to a gap or slot-shaped Ge ⁇ ometrie. That is to say, the outflow opening is much larger or longer in a first expansion than in a second expansion perpendicular to this first expansion.
  • the cross section of the extinguishing agent jet is very narrow in one direction, but very elongated in another direction.
  • Such a flat beam shape can be particularly well through the described slit or slot-shaped Geometry of the discharge opening can be generated.
  • the flat gas or liquid jet has the advantage that there is no flow vortex radiated by the human ear detectable acoustic frequencies.
  • the outflow opening runs along a straight line.
  • Such long slit or slot-shaped straight geometries for the outflow openings are preferably placed along a pipe ⁇ , which serves equally for supplying the extinguishing medium and to the outflow.
  • a pipe section itself represents the extinguishing nozzle.
  • the outflow opening extends alternatively on a sheet, in particular a circular arc.
  • This alternative to the straight course is advantageous for example at a pipe end.
  • ⁇ describes the outflow opening a circular arc through which the extinguishing medium can escape. In the radial direction, the outflow opening is in turn at most so great that the acoustic conditions are met.
  • the device has a plurality of outflow openings.
  • the straight slot-shaped outflow openings can in particular parallel to each other z. B. be arranged in the pipe jacket.
  • the Kreisbogenausströmö réelleen can z. B. be mounted as a concentric circular openings of different diameters at a pipe end.
  • the outflow opening has a through opening.
  • the outflow is a continuous, not interrupted ⁇ opening in the erase nozzle, z.
  • a long column For example, a long column.
  • Design of the invention in which the outflow has a plurality of small juxtaposed openings. That is, the outflow opening is composed of a plurality of small holes. These can be in particular boreholes.
  • These small openings which form the outflow opening, are preferably lined up in such a way that they act on an outflowing medium essentially like a through-opening.
  • the plurality of small openings has the advantage of mechanical stability of the device and a simple manufacturing variant in which the openings can be re ⁇ alinstrument as boreholes.
  • these small openings which form the outflow opening are arranged along a straight line.
  • the openings of the outflow opening can be arranged along an arc, in particular a circular arc.
  • the straight openings along the Rohrach se can extend in the pipe jacket.
  • the arcuate outflow openings are preferably arranged at a pipe end in the final ⁇ part.
  • the device With the use of suitable nozzle shapes can be reduced by the geometry of the sound production. In a flat jet, it is spatially impossible for eddies with acoustic rotational frequency to form in the outflowing volume. In addition to the reduction in noise during operation, the device also has the advantage that the specified discharge nozzles are easy to manufacture.
  • the new shape allows for the length of the opening to a good evaporation of chemical extinguishing agents. Chemical extinguishing agents are for example Halon, HFC 227 or Novec. Also, a high flow of Löschme ⁇ dium is ensured and a rapid homogeneous distribution of the extinguishing medium in the room.
  • the distribution of the extinguishing medium achieved by the extinguishing nozzles ensures rapid a minimum extinguishing agent concentration in all parts of the room.
  • a single nozzle for ei NEN space may be sufficient due to the new shape of the outflow openings, which reduces the installation cost
  • the design is scalable, ie even on rooms under defenceli rather resizable, only by adjusting individual geometrical parameters, without the To change the basic design.
  • the extinguishing nozzles described are very inexpensive to produce.
  • FIG. 2 shows a first embodiment of an outflow opening along a pipe
  • FIG. 5 shows a second embodiment of a plurality of outflow openings along a tube
  • FIG. 6 shows a third embodiment of a plurality of outflow openings along a tube
  • FIG. 8 shows a longitudinal section of this third embodiment
  • FIG. 9 shows a further embodiment of a plurality of outflow openings
  • 10 is a cone nozzle with a further imple mentation egg ner outflow
  • 11 is a plan view of this further imple mentation ei ⁇ ner outflow
  • FIG. 1 shows an extinguishing nozzle, as known from the prior art.
  • a pipe 11 protrudes from the ceiling of a room to be deleted.
  • the tube 11 is the supply line for the extinguishing medium 13.
  • This tube 11 is closed with the extinguishing nozzle 14.
  • Perspectively shown is an end cap in the form of a cap nut 15 which is screwed onto the tube 11.
  • the end cap 15 has outflow openings 12 formed by bores in the end cap 15. From these outflow openings 12, the extinguishing medium 13 flows out in a conical jet, so that as far as possible a large radius can be covered.
  • FIG. 2 shows a tube 21 in a side view.
  • This tube 21 serves both the supply of the extinguishing agent 13 and the outflow of the extinguishing agent, i. So as extinguishing nozzle.
  • the tube 21 has an outflow opening 22. This runs as a narrow slot along the tube axis.
  • Marks III and IV are also shown in FIG. 2, which mark the cross section III through the tube 21 shown in FIG. 3 and the longitudinal section IV through the tube 21 shown in FIG.
  • Figure 3 thus shows the cross section III 21 through the pipe ⁇ Since at the very narrow outflow opening 22 can be seen.
  • the expansion of the discharge opening voltage 22 along the tube panel circumference is very low, is in particular ⁇ sondere less than 17 mm.
  • Figure 4 shows the longitudinal section IV through the tube 21.
  • the sectional plane IV is chosen so that the outflow ⁇ opening 22 is shown at one of the edges.
  • a passage 23 is shown, which serves as Me ⁇ serving feed pipe 23 to the 21st
  • FIG. 5 shows a further disclosed embodiment, the tube 21 as the extinguishing nozzle, said plurality of voltages having Ausströmöff ⁇ 22 which are arranged in parallel.
  • each of the discharge ports 22 but tra gene ⁇ a plurality of openings 22 fulfills the conditions to the Ausströmgeometrie of the beam to a higher throughput of extinguishing medium at 13.
  • FIG. 6 shows a further alternative embodiment of the outflow opening 22.
  • a tube 21 is used as extinguishing nozzle.
  • the figure 6 again has the characteristic ⁇ drawing of transverse and longitudinal section VII, VIII, which are shown in Figures 7 and 8.
  • this Ausure ⁇ tion form no continuous slot as outflow 22, but there are a plurality of small openings 20 are shown, which are arranged side by side, that they cause a very similar beam shape of the outflowing medium 13, such as a continuous elongated slot. That is, the diameter of the openings 20, which are in particular boreholes, meets the highest level of noise protection.
  • the close to each other ⁇ succession along the tube axis causes suffi ⁇ accordingly extinguishing medium can flow 13 and that, combine the beams which are masked by the small openings 20 suitable.
  • FIG. 7 once again shows the cross section through the plane VII of the tube 21. 22 cut.
  • the diameter of a drill rod 22 is in particular a maximum of 17 mm.
  • FIG. 8 again shows the longitudinal section through the tube 21 along the plane VIII.
  • the outflow openings 22 can be seen on the longitudinal side of the tube 21.
  • the tube 21 is again closed at a first end and has an opening for supplying media 23 at the second end.
  • FIG. 9 shows an alternative embodiment of the extinguishing nozzle.
  • the tube 21 is arranged perpendicular to a connecting piece 26.
  • This connector 26 has at its obe ⁇ ren end the opening 23 for the media supply of the extinguishing medium.
  • This is in particular made as a screw, which can be mounted on a pipe end, which projects, for example, from the ceiling.
  • the pipe 21 is arranged perpendicular thereto, which can be supplied via the feed 23 serving Me ⁇ with extinguishing medium. 13
  • the tube 21 is closed. It has the outflow openings 22 along the tubular jacket.
  • a multiplicity of outflow openings 22 are shown. These do not have a continuous opening, but in turn have a plurality of small openings 20 arranged side by side so that jets emerging through these small openings 20 combine to form a single flat jet of extinguishing medium 13, which forms the acoustic conditions.
  • the pipe is not a conical pipe jacket, but a geometry with an octagonal cross-section.
  • the height h of the tee is in particular 65 mm.
  • the length 1 of the T-piece, which corresponds to the length of the tube 21, is in particular 128 mm.
  • the media supply port 23 has in particular ⁇ sondere to a diameter of 19.05 mm.
  • the small openings 20 are in particular boreholes.
  • the diameters of the small openings 20 are in particular 25.4 mm.
  • the diameters of these openings 20 are less than 25.4 mm.
  • the distance between the openings 20 along an outflow opening 22 is in particular 2.53 "or less.
  • FIGS. 10 to 15 show an alternative embodiment of an extinguishing nozzle in the form of a cone nozzle 24. This is initially shown in FIG. 10 in a side view.
  • the cone ⁇ nozzle 24 initially consists of a pipe section 21, which extends in ⁇ particular cylindrical. Because of the cone-shaped terminal 25 of the ⁇ Konusdüse 24 includes with the direction of Löschdüsenvor-. In this final cone 25 is the
  • FIG. 10 has an identification of a sectional area XII which is shown in FIG. Furthermore, in FIG. 10, which is indicated
  • Top view XI is shown on the cone nozzle 24 in Figure 11.
  • 11 shows a plan view XI on the kegelför ⁇ migen conclusion 25 of the cone nozzle 24.
  • the continuous outflow opening 22 describes a complete circular arc.
  • the extinguishing medium 13 will emerge from the nozzle in the form of a conical jet.
  • the cone beam is not fully filled as in a hole, but the Löschmedi ⁇ 13 radiates only as a shallow cone coat. This ensures the noise level reduction.
  • FIG. 12 shows a longitudinal section through the cone nozzle 24 shown in FIG. 10 along the surface XII.
  • the media supply 23 in the conical nozzle 24 which may be connected in particular to a supply pipe.
  • the outflow openings 22 On the opposite side of the conical nozzle 24, on the conical end 25, there are the outflow openings 22, through which the extinguishing medium 13 can leave the conical nozzle 24.
  • the supply line 23 is branched so that it reaches the outflow openings 22.
  • Figure 13 shows an alternative embodiment of the flow orifice from ⁇ 22 for a Konusdüse 24.
  • the flow orifice from ⁇ 22 again not designed consistently, special It has a plurality of small openings 20, which together form an outflow opening 22.
  • This outflow opening 22 is again arranged on a circular arc at the conical end 25 of the cone nozzle 24.
  • the longitudinal section XV is identified by the cone nozzle 24, as shown in FIG.
  • FIG. 14 shows a plan view of the cone nozzle 24 from the side XIV, which represents the conical end 25.
  • FIG. 15 the opening 23 for the media supply is shown again on one side and the outflow openings 20 on the opposite side of the nozzle 24.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne un dispositif d'éjection d'un milieu d'extinction (13) comportant au moins une ouverture d'éjection (22). L'ouverture d'éjection (22) est caractérisée en ce que le milieu d'extinction (13) adopte une forme de jet si plate qu'il ne peut s'y former aucun tourbillon susceptible d'émettre des ondes sonores d'une longueur d'onde du spectre acoustique perceptible par l'oreille humaine. Ceci est garanti par la géométrie de l'ouverture d'éjection (22).
EP12712996.3A 2011-04-08 2012-03-19 Buses d'extinction insonorisées Withdrawn EP2675533A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011007054A DE102011007054A1 (de) 2011-04-08 2011-04-08 Schallreduzierte Löschdüsen
PCT/EP2012/054802 WO2012136468A2 (fr) 2011-04-08 2012-03-19 Buses d'extinction insonorisées

Publications (1)

Publication Number Publication Date
EP2675533A2 true EP2675533A2 (fr) 2013-12-25

Family

ID=45937245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12712996.3A Withdrawn EP2675533A2 (fr) 2011-04-08 2012-03-19 Buses d'extinction insonorisées

Country Status (3)

Country Link
EP (1) EP2675533A2 (fr)
DE (1) DE102011007054A1 (fr)
WO (1) WO2012136468A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3311886A1 (fr) * 2016-10-20 2018-04-25 Siemens Schweiz AG Système de buse d'extinction insonorisé doté d'une couche d'insonorisation à sélection de fréquence et utilisation appropriée
US11117007B2 (en) 2017-11-10 2021-09-14 Carrier Corporation Noise reducing fire suppression nozzles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29818472U1 (de) * 1998-10-16 1999-03-18 Mader Hubert Lärmarme Flachstrahldüse
GB2391807A (en) * 2002-08-13 2004-02-18 Advanced Motion Technologies I Apparatus for suppressing fires

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE731836C (de) * 1937-10-08 1943-02-15 Minimax Ag Strahlrohr fuer Feuerloeschzwecke, insbesondere Schneerohr zur Erzeugung von Kohlensaeureschnee
US5211246A (en) * 1989-05-30 1993-05-18 The Boeing Company Scouring method and system for suppressing fire in an enclosed area
IT1317475B1 (it) * 2000-05-05 2003-07-09 Vesta S R L Ugello silenziato per la scarica di gas estinguenti.
DE102007055024A1 (de) * 2007-11-15 2009-05-20 Rolf-Dieter Riesbeck Brandschutzeinrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29818472U1 (de) * 1998-10-16 1999-03-18 Mader Hubert Lärmarme Flachstrahldüse
GB2391807A (en) * 2002-08-13 2004-02-18 Advanced Motion Technologies I Apparatus for suppressing fires

Also Published As

Publication number Publication date
WO2012136468A2 (fr) 2012-10-11
WO2012136468A3 (fr) 2013-05-16
DE102011007054A1 (de) 2012-10-11

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