EP1542188B1 - Dispositif et méthode pour détecter l'apparition d'un feu - Google Patents

Dispositif et méthode pour détecter l'apparition d'un feu Download PDF

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Publication number
EP1542188B1
EP1542188B1 EP04028927A EP04028927A EP1542188B1 EP 1542188 B1 EP1542188 B1 EP 1542188B1 EP 04028927 A EP04028927 A EP 04028927A EP 04028927 A EP04028927 A EP 04028927A EP 1542188 B1 EP1542188 B1 EP 1542188B1
Authority
EP
European Patent Office
Prior art keywords
opening
suction
rubber
intake
supply line
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
EP04028927A
Other languages
German (de)
English (en)
Other versions
EP1542188A1 (fr
Inventor
Manfred Russwurm
Hauke Dipl.-Ing. Dittmer
Thomas Dipl.-Ing. Warnecke
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 EP1542188A1 publication Critical patent/EP1542188A1/fr
Application granted granted Critical
Publication of EP1542188B1 publication Critical patent/EP1542188B1/fr
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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Definitions

  • the invention relates to a device for detecting incipient fires according to the preamble of the first claim and a method for cleaning the device.
  • the invention is applicable everywhere where incipient fires in rooms or electronic devices are possible.
  • the device is furthermore applicable where explosion zones according to ATEX95 and 137 are present, for example in the dust-contaminated industry (wood and mill industry).
  • a detector for detecting a fire characteristic via a supply line which in the space to be monitored or is arranged on or in the device to be monitored and has a number of suction ports, continuously supplied to room air or device samples. If the detector detects a fire detection variable, an evaluation unit, which is electronically connected to it, outputs a signal according to predetermined criteria.
  • supply line does not only mean pipelines that are attached to a room protection and lead to an air outlet opening in the housing of the detector and suck the room or device cooling air through suction
  • the supply line can also be a suction hopper, a collecting hood or a T- represent shaped pipe hood, which is placed for example on the air outlet grille of an electronic device and thereby arranged in the main cooling stream of the device.
  • Fire detection variables are understood to mean physical quantities which are subject to measurable changes in the environment of an incipient fire, for example the ambient temperature, the solid or liquid or gas component in the ambient air or the ambient radiation.
  • a method and a device for detecting incipient fires in rooms or in electronic devices are known with a detector for detecting a fire characteristic with at least one supply line in the space to be monitored or on or in the device to be monitored is arranged and has a number of suction through which room air or device cooling air samples are supplied continuously.
  • An evaluation unit is electronically connected to a detector and emits a signal according to predetermined criteria when the detector detects a fire detection variable.
  • This device has the disadvantage that settles increasingly dust at the holes of the intake. This leads to the detection system increasingly losing its functionality.
  • a Device of the type mentioned which is provided for the space protection and in which the supply line preferably consists of one or more pipes, the suction openings are distributed in the pipes at regular intervals throughout the room.
  • Such a method and such a device are known for example from DE 295 18 042 U1 or DE 33 48 107 C2 .
  • the detection reliability of a fire parameter decreases with increasing distance from the aspirating fan due to the pressure drop occurring in the pipelines.
  • the supply line may also consist of a pipeline, which is, however, significantly shorter, so that all suction can be the same. However, they must have different diameters with different number of suction because the total suction can only be within a small bandwidth.
  • suction holes can be drilled on the construction site in the supply / supply lines. Due to the wall thickness of the supply line accumulates in practice at the hole of the intake more dust. This then leads to the detection system increasingly losing its functionality. To prevent this, a frequent and high maintenance is necessary.
  • From DE 196 05 842 C1 discloses an apparatus and a method for defrosting an intake opening, which provides, in an intake duct of a fire alarm system, through which room or equipment air sucked and fed to a detector for detecting a fire parameter, an elastic element with a Intake opening coaxial passage opening to be arranged, which can be acted upon to defrost the suction port with a pressure surge.
  • the elastic element is simply inserted into the suction port. This has the disadvantage that in the case of a pressure surge in loose-fitting elastic element, the elastic element is blown out because it does not find enough resistance in the intake.
  • the device according to the invention provides that the suction openings in the supply line, which can have the same diameter and can be produced by drilling, have a rubber-elastic part with an inner opening with a smaller diameter.
  • the rubber-elastic part closes the opening of the supply line not only gas-tight, but also ensures that the film is loadable on both sides, ie through the hole in the film, a gas flow into the supply line and a gas flow from the Lead out take place without the rubber-elastic part has leaks against the supply line.
  • suction holes which are glued over with foil, it is not possible to direct the gas flow in the opposite direction, without the release film adhering from the outside being peeled off over a longer period of use.
  • These adhesively bonded foils are only suitable for reliably enabling the limitation of a gas flow into the device, but not for a gas flow which is carried out from the supply line.
  • the film on the rubber-elastic part is advantageous to arrange the film on the rubber-elastic part at the top.
  • a gas flow from the inside to the outside through the opening of the film by means of a fan.
  • the air flow can be blown at predetermined time intervals from the inside against the film by a timer, so that a continuous cleaning is given.
  • a filter can be used in the region of the intake openings over the entire tube. This prevents dust from entering the supply line and dust concentrations that form explosive mixtures.
  • the present invention provides two ways to protect the intake ports from contamination. Since the use with the elastic membrane in the outer diameter is considerably larger than the suction holes, a dust filter can be placed on the intake from the outside. For this purpose, a dust filter is integrated into the elastic membrane. By means of the air flow monitoring system, the condition of these dust filters is constantly checked for function. The dust filter can also be placed over the entire pipe of the supply line in the region of the intake openings in order to increase the filter surface. The filters are cleaned either by counter-rinsing, cleaning or replacement.
  • the great advantage of this solution according to the invention is that all suction holes get an insert which has a thin membrane with high sliding properties in the region of the suction bore.
  • This solution according to the invention largely prevents dust deposition in the region of the bore.
  • the further, great advantage of this invention is that the thin membrane has a certain elasticity. Should In the area of the intake openings by certain environmental properties deposit dust, which affects the reliability of the device for detecting incipient fires ", the introduction of scavenging air in the supply line can easily clean the intake, as by an increased pressure, the membrane bulges outward and the dust thereby easily detached.
  • the introduction of the purging air can be done via the intake fan by means of compressed air at the air outlet or via a bypass between the fan and the first suction port. Another possibility is to reverse the intake fan in its direction of rotation. Thus, the supply line to a pressure line and cleans the suction with the outflowing air. This can also be done automatically. However, it should be noted that the fire detection is interrupted during the rinsing phase.
  • FIG. 3 shows a feed line 3 with its suction opening 5.
  • This suction opening 5 can easily be passed by dust particles, so that contamination of the detectors continuously occurs.
  • the cross section of the opening 5 may have to be adapted to the desired flow cross section.
  • Figure 2 shows a rubber-elastic part 1, which has a groove 8 for fastening, wherein the inner diameter is provided with a film 2 having an opening 4 for the air flow.
  • the film 2 is equally strong on both sides.
  • the rubber-elastic part 1 is introduced into the supply line 3.
  • FIG. 1 shows a supply line 3, in which a rubber-elastic part 1 is introduced, which has a film 2 with an opening 4 at its upper edge. This is advantageous in that no corners arise between the rubber-elastic part 1 and the inner film 2, in which polluting particles can settle. Against coarse particles, the opening 4 of the film 2 is protected by a filter 7 to the entire tube 3.
  • FIG. 4 shows a rubber-elastic part 1 which is provided with a filter 6 above the suction opening 4.
  • a strong fouling is prevented by the fact that the air flow through the opening 4 is easily reversible, with the result that any dust deposits are entrained to the outside. Furthermore, the penetration of coarse particles by attaching the filters 6, 7 is prevented.
  • the present invention opens up a broad spectrum of operational capability, especially in dust-prone areas.
  • the inventive design the advantages of fire detection can be used with multi-sensor intake detectors through the use of filters and convenient cleaning by means of the membrane insert in dust hazardous areas.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)

Claims (5)

  1. Dispositif destiné à détecter des débuts d'incendie avec un détecteur pour identifier un paramètre de l'incendie, avec au moins une conduite d'amenée (3) munie d'un orifice d'admission (5) et d'un ventilateur qui alimente le détecteur en air par la conduite d'amenée (3), caractérisé en ce qu'un élément présentant une élasticité caoutchoutique (1) avec une feuille intérieure (2) munie d'un orifice (4) d'un diamètre inférieur est prévu dans l'orifice d'admission (5), l'élément (1) étant en appui étanche aux gaz contre l'orifice (5) de la conduite d'amenée (3) moyennant une rainure périphérique (8), et la feuille (2) étant disposée sur l'élément présentant une élasticité caoutchoutique (1), dans la partie haute de celui-ci.
  2. Dispositif selon la revendication 1, caractérisé en ce que la feuille (2) est munie d'un revêtement anti-adhérent.
  3. Dispositif selon la revendication 1 et 2, caractérisé en ce que la zone des orifices d'admission (5) est munie d'un filtre (6).
  4. Dispositif selon les revendications 1 à 3, caractérisé en ce qu'un filtre (7) est posé sur tout le tuyau dans la zone des orifices d'admission (5).
  5. Procédé de nettoyage d'un dispositif selon la revendication 1, caractérisé en ce qu'un flux de gaz est expulsé de l'intérieur vers l'extérieur par l'orifice (4) de la feuille (2).
EP04028927A 2003-12-13 2004-12-07 Dispositif et méthode pour détecter l'apparition d'un feu Active EP1542188B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10358531 2003-12-13
DE10358531A DE10358531A1 (de) 2003-12-13 2003-12-13 Vorrichtung und Verfahren zum Detektieren von Entstehungsbränden

Publications (2)

Publication Number Publication Date
EP1542188A1 EP1542188A1 (fr) 2005-06-15
EP1542188B1 true EP1542188B1 (fr) 2006-08-02

Family

ID=34485375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04028927A Active EP1542188B1 (fr) 2003-12-13 2004-12-07 Dispositif et méthode pour détecter l'apparition d'un feu

Country Status (6)

Country Link
US (1) US20050128098A1 (fr)
EP (1) EP1542188B1 (fr)
CN (1) CN100501788C (fr)
AT (1) ATE335266T1 (fr)
DE (2) DE10358531A1 (fr)
RU (1) RU2004136274A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010017579U1 (de) 2010-11-29 2012-03-02 Minimax Gmbh & Co. Kg Vorrichtung zur Branddetektion in Volumina
US8791826B2 (en) 2010-11-29 2014-07-29 Minimax Gmbh & Co. Kg Method and device for fire detection in enclosed environments

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009031099A1 (de) * 2009-06-29 2010-12-30 Ista International Gmbh Rauchwarnmelder und Verfahren zur Überprüfung der Verschmutzung der Rauchdurchtrittsöffnungen
CN101618383B (zh) * 2009-07-24 2013-01-09 上海华魏光纤传感技术有限公司 自动清洁火焰探测器的装置及方法
US11543057B2 (en) 2019-07-09 2023-01-03 Honeywell International Inc. Universal pipe sleeve junction for an aspirated smoke detection system
CN116758694B (zh) * 2023-06-16 2023-12-08 广东钧逸建筑工程有限公司 一种消防自动报警鸣叫装置

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
CH521649A (de) * 1970-07-31 1972-04-15 Cerberus Ag Feuermeldeeinrichtung
AT371583B (de) * 1980-11-24 1983-07-11 Schaechter Friedrich Einrichtung zur konstanthaltung der flammengroesse eines mit fluessiggas betriebenen kleinbrenners, vorzugsweise eines feuerzeugbrenners
DD200961A1 (de) * 1981-10-01 1983-06-22 Werner Bose Dichtungsmuffe fuer kabeleinfuehrung in elektrische geraete
DE3348107C2 (en) * 1983-08-30 1988-01-21 Securiton Ag, Zollikofen, Bern, Ch Smoke suction system of a line smoke alarm
US4814766A (en) * 1987-12-07 1989-03-21 Domingue Willard A Fire alarm and heat detection system and apparatus
US4937562A (en) * 1987-12-26 1990-06-26 Hochiki Corp. Moisture-proof ionization smoke detector
US4975688A (en) * 1988-09-22 1990-12-04 Gonzales Ronald A Particulate detector disabling and protecting system
US5687450A (en) * 1994-09-10 1997-11-18 Stein & Co. Gmbh Machine, such as a vacuum cleaner, which exhausts a clean gas, which machine has a protective bumper
DE29518042U1 (de) * 1995-11-14 1996-01-25 Wagner Alarm- und Sicherungssysteme GmbH, 30853 Langenhagen Branddetektor
DE19605638C5 (de) * 1996-02-15 2004-10-14 Wagner Alarm- Und Sicherungssysteme Gmbh Verfahren und Vorrichtung zum Detektieren von Entstehungsbränden
DE19605842C1 (de) * 1996-02-16 1997-04-24 Wagner Alarm Sicherung Vorrichtung und Verfahren zum Enteisen einer Ansaugöffnung
US6943691B2 (en) * 2001-01-19 2005-09-13 Bill Chambers Tamper indicator for a smoke detector
DE10125687B4 (de) * 2001-05-25 2005-06-16 Wagner Alarm- Und Sicherungssysteme Gmbh Vorrichtung zum Detektieren von Brandherden oder Gasverunreinigungen
JP3934423B2 (ja) * 2002-01-11 2007-06-20 ホーチキ株式会社 散乱光式煙感知器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010017579U1 (de) 2010-11-29 2012-03-02 Minimax Gmbh & Co. Kg Vorrichtung zur Branddetektion in Volumina
US8791826B2 (en) 2010-11-29 2014-07-29 Minimax Gmbh & Co. Kg Method and device for fire detection in enclosed environments

Also Published As

Publication number Publication date
US20050128098A1 (en) 2005-06-16
ATE335266T1 (de) 2006-08-15
DE10358531A1 (de) 2005-07-28
CN100501788C (zh) 2009-06-17
RU2004136274A (ru) 2006-05-20
CN1627330A (zh) 2005-06-15
DE502004001093D1 (de) 2006-09-14
EP1542188A1 (fr) 2005-06-15

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