EP0197371A1 - Agencement pour détecteur d'incendie avec un système d'aspiration - Google Patents

Agencement pour détecteur d'incendie avec un système d'aspiration Download PDF

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Publication number
EP0197371A1
EP0197371A1 EP86103608A EP86103608A EP0197371A1 EP 0197371 A1 EP0197371 A1 EP 0197371A1 EP 86103608 A EP86103608 A EP 86103608A EP 86103608 A EP86103608 A EP 86103608A EP 0197371 A1 EP0197371 A1 EP 0197371A1
Authority
EP
European Patent Office
Prior art keywords
value
smoke detector
flow
measured
measured values
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
EP86103608A
Other languages
German (de)
English (en)
Other versions
EP0197371B1 (fr
Inventor
Peer Dr.-Ing. Thilo
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 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
Priority to AT86103608T priority Critical patent/ATE49484T1/de
Publication of EP0197371A1 publication Critical patent/EP0197371A1/fr
Application granted granted Critical
Publication of EP0197371B1 publication Critical patent/EP0197371B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a fire alarm system with an exhaust system according to the preamble of claim 1.
  • Extraction systems are used for fire detection under special conditions, such as those found in warehouses or factories, high-bay warehouses or aircraft halls.
  • the decisive factor for use is that the measuring points, i.e. the places where the fire detectors should be arranged, are inaccessible, spatially cramped or too high in very high rooms, so that normal point detectors cannot be used.
  • a fire alarm system with an exhaust system generally consists of one or more exhaust pipes, which are connected in stem form to a measuring chamber.
  • a fan which sucks the air through the pipes via a smoke detector which is also arranged in the measuring chamber.
  • the possibly smoky air enters the suction system through suitable suction openings in the suction pipes. If the smoke concentration is sufficiently high, the fire detector responds so that the associated control panel can give an alarm.
  • the smoke detector needs a high sensitivity adapted to the respective configuration, because smoke that penetrates through one or more suction openings is to be detected, although this is diluted by the pure air flowing into the other openings. Therefore, an extremely difficult setting of the smoke detector is required.
  • reliable operation is only ensured if all openings for the air inlet are actually free. Even a slight increase in the flow resistance can cause the suction to be shifted to other pipes or openings, so that fires at the relevant location are poorly or not at all recognized.
  • the object of the invention is therefore to avoid the disadvantages described above in a fire detection system with a suction system and to provide measures for a fire detection system that do not require special, highly sensitive and expensive fire detectors and with which a complex adjustment of the detectors and the vacuum in the Measuring chamber is omitted.
  • a sensor is also arranged in each suction tube and measures the flow rate. This analog measured value for the flow velocity is also queried regularly from the control center. A flow velocity mean value is formed and stored in the control center for each flow velocity sensor. The queried flow velocity measured values are compared with the corresponding mean value. If the queried measured value deviates by a predetermined amount, a fault message is issued.
  • the fire alarm system according to the invention with an extraction system has the following advantages.
  • the smoke detector idle value and the respective mean flow velocity value can be advantageously formed when the fire alarm system is started up or at predeterminable time intervals from several successive measured values.
  • the calibration or the individual setting of the measuring chamber takes place automatically when the system is switched on, i.e. during the commissioning of the fire alarm system, and can also be repeated at predetermined intervals, so that even a change in the idle value of the smoke detector has no disruptive influence.
  • the flow velocity measured values are used to control the alarm threshold during the commissioning of the fire alarm system.
  • the amount of the alarm threshold is changed depending on the measured flow velocity measured values, e.g. an increase in the flow rate reduces the amount of the alarm threshold.
  • Another advantage is that changes in the smoke detector behavior can be taken into account when the rest value is formed.
  • the components and the method of the known pulse alarm system can be used in an advantageous manner, so that component aging or slow contamination of an individual detector is also taken into account by the rest value of the smoke detector and accordingly also the mean value of the each sensor for the flow velocity measurement can be tracked.
  • the individual display of the smoke detector it is also possible to display the relevant exhaust pipe in the event of a fault.

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)
EP86103608A 1985-03-20 1986-03-18 Agencement pour détecteur d'incendie avec un système d'aspiration Expired - Lifetime EP0197371B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103608T ATE49484T1 (de) 1985-03-20 1986-03-18 Brandmeldeanlage mit einem absaugsystem.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3510100 1985-03-20
DE3510100 1985-03-20

Publications (2)

Publication Number Publication Date
EP0197371A1 true EP0197371A1 (fr) 1986-10-15
EP0197371B1 EP0197371B1 (fr) 1990-01-10

Family

ID=6265823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103608A Expired - Lifetime EP0197371B1 (fr) 1985-03-20 1986-03-18 Agencement pour détecteur d'incendie avec un système d'aspiration

Country Status (3)

Country Link
EP (1) EP0197371B1 (fr)
AT (1) ATE49484T1 (fr)
DE (1) DE3668247D1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696787A1 (fr) 1994-08-12 1996-02-14 Wagner Alarm- und Sicherungssysteme GmbH Dispositif et méthode de détection d'incendie à compensation de la pression d'air
DE10231230A1 (de) * 2002-05-13 2004-02-05 F & B GmbH Feuerschutz & Brandbekämpfung Wassersprühnebel-System und ein Verfahren zur Brandort-Lokalisierung
EP1627366A1 (fr) 2003-05-14 2006-02-22 Vision Fire & Security Pty Ltd. Appareil et procede de detection amelioree
EP1638062A1 (fr) * 2004-09-09 2006-03-22 HEKATRON Technik GmbH Détecteur de fumée à aspiration et méthode de son fonctionnement
EP1665189A1 (fr) * 2003-09-24 2006-06-07 Vision Fire & Security Pty Ltd. Procede et appareil permettant de determiner l'etat operationnel d'un equipement de controle de la pollution
US7504962B2 (en) 2005-11-22 2009-03-17 Joseph Stephen Smith Apparatus for enclosing a smoke detector
US20100194575A1 (en) * 2009-01-30 2010-08-05 Carlos Pedrejon Rodriguez Dual channel aspirated detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3907484B1 (fr) 2020-05-08 2023-08-30 Carrier Corporation Détection de fuite dans un système de détection de feu d'aspiration

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1232841A (fr) * 1968-05-09 1971-05-19
US4254414A (en) * 1979-03-22 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Processor-aided fire detector
EP0070449A1 (fr) * 1981-07-10 1983-01-26 Siemens Aktiengesellschaft Procédé et dispositif pour l'élévation de la sensibilité de réaction et de la sécurité contre les perturbations dans une installation détectrice de danger et particulièrement d'incendie
FR2518287A1 (fr) * 1981-12-10 1983-06-17 Cerberus Guinard Installation de prelevement de fluides a l'etat gazeux, notamment pour detecteur de fumees

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1232841A (fr) * 1968-05-09 1971-05-19
US4254414A (en) * 1979-03-22 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Processor-aided fire detector
EP0070449A1 (fr) * 1981-07-10 1983-01-26 Siemens Aktiengesellschaft Procédé et dispositif pour l'élévation de la sensibilité de réaction et de la sécurité contre les perturbations dans une installation détectrice de danger et particulièrement d'incendie
FR2518287A1 (fr) * 1981-12-10 1983-06-17 Cerberus Guinard Installation de prelevement de fluides a l'etat gazeux, notamment pour detecteur de fumees

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696787A1 (fr) 1994-08-12 1996-02-14 Wagner Alarm- und Sicherungssysteme GmbH Dispositif et méthode de détection d'incendie à compensation de la pression d'air
DE10231230A1 (de) * 2002-05-13 2004-02-05 F & B GmbH Feuerschutz & Brandbekämpfung Wassersprühnebel-System und ein Verfahren zur Brandort-Lokalisierung
DE10231230B4 (de) * 2002-05-13 2004-07-22 F & B GmbH Feuerschutz & Brandbekämpfung Wassersprühnebel-System zur Brandort-Lokalisierung
EP2278567A2 (fr) 2003-05-14 2011-01-26 VFS Technologies Limited Appareil et procédé de détection améliorée
EP1627366A1 (fr) 2003-05-14 2006-02-22 Vision Fire & Security Pty Ltd. Appareil et procede de detection amelioree
US8224621B2 (en) 2003-05-14 2012-07-17 Vision Fire & Security Pty Ltd Sensing apparatus and method
US8892399B2 (en) 2003-05-14 2014-11-18 Xtralis Technologies Ltd Sensing apparatus and method
EP1627366B1 (fr) * 2003-05-14 2015-04-22 Xtralis Technologies Ltd Appareil et procede de detection amelioree
US9746363B2 (en) 2003-05-14 2017-08-29 Garrett Thermal Systems Limited Sensing apparatus and method
EP1665189A1 (fr) * 2003-09-24 2006-06-07 Vision Fire & Security Pty Ltd. Procede et appareil permettant de determiner l'etat operationnel d'un equipement de controle de la pollution
EP1665189A4 (fr) * 2003-09-24 2008-06-18 Vfs Technologies Ltd Procede et appareil permettant de determiner l'etat operationnel d'un equipement de controle de la pollution
US8412481B2 (en) 2003-09-24 2013-04-02 Vision Fire & Security Pty Ltd Method and apparatus for determining operational condition of pollution monitoring equipment
EP1638062A1 (fr) * 2004-09-09 2006-03-22 HEKATRON Technik GmbH Détecteur de fumée à aspiration et méthode de son fonctionnement
US7504962B2 (en) 2005-11-22 2009-03-17 Joseph Stephen Smith Apparatus for enclosing a smoke detector
US20100194575A1 (en) * 2009-01-30 2010-08-05 Carlos Pedrejon Rodriguez Dual channel aspirated detector

Also Published As

Publication number Publication date
DE3668247D1 (de) 1990-02-15
EP0197371B1 (fr) 1990-01-10
ATE49484T1 (de) 1990-01-15

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