FR2391742A1 - Detecteur de debut d'incendie - Google Patents

Detecteur de debut d'incendie

Info

Publication number
FR2391742A1
FR2391742A1 FR7715778A FR7715778A FR2391742A1 FR 2391742 A1 FR2391742 A1 FR 2391742A1 FR 7715778 A FR7715778 A FR 7715778A FR 7715778 A FR7715778 A FR 7715778A FR 2391742 A1 FR2391742 A1 FR 2391742A1
Authority
FR
France
Prior art keywords
detector
flow
early warning
small particles
ionisation
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
FR7715778A
Other languages
English (en)
Other versions
FR2391742B1 (fr
Inventor
Laurence Gibson Barr
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.)
Brunswick Corp
Original Assignee
Brunswick Corp
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 Brunswick Corp filed Critical Brunswick Corp
Priority to FR7715778A priority Critical patent/FR2391742A1/fr
Publication of FR2391742A1 publication Critical patent/FR2391742A1/fr
Application granted granted Critical
Publication of FR2391742B1 publication Critical patent/FR2391742B1/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • 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

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

a. Détecteur de début d'incendie. b. Le détecteur d'incendie selon l'invention utilise un détecteur d'ionisation associé à un collecteur de particules qui sélectionne les petites particules présentes dans l'atmosphère et qui sont l'indice d'un commencement d'incendie. Au début de l'incendie avant l'inflammation, une grande masse de particules ayant moins de 5 microns est produite par le combustible augmentant ainsi la concentration de ces petites particules dans l'atmosphère. Le détecteur est conçu pour recueillir des particules ayant moins de 5 microns en rejetant celles qui sont plus grandes et pour canaliser les particules ainsi collectées sous un débit de circulation déterminé, vers une chambre d'ionisation, dans laquelle la concentration de ces particules est mesurée. c. Concerne, d'une manière générale, la protection contre l'incendie.
FR7715778A 1977-05-23 1977-05-23 Detecteur de debut d'incendie Granted FR2391742A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7715778A FR2391742A1 (fr) 1977-05-23 1977-05-23 Detecteur de debut d'incendie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7715778A FR2391742A1 (fr) 1977-05-23 1977-05-23 Detecteur de debut d'incendie

Publications (2)

Publication Number Publication Date
FR2391742A1 true FR2391742A1 (fr) 1978-12-22
FR2391742B1 FR2391742B1 (fr) 1982-10-15

Family

ID=9191189

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7715778A Granted FR2391742A1 (fr) 1977-05-23 1977-05-23 Detecteur de debut d'incendie

Country Status (1)

Country Link
FR (1) FR2391742A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7823438B2 (en) 2005-01-24 2010-11-02 Calectro Ab Fluid detector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849685A (en) * 1973-06-22 1974-11-19 Honeywell Inc Ionization chamber with recessed radioactive body
US3935466A (en) * 1968-09-26 1976-01-27 Hochiki Kabushiki Kaisha Smoke detector adapted to a smoke sensing apparatus
US3953844A (en) * 1973-04-11 1976-04-27 Celesco Industries Inc. Incipient fire detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935466A (en) * 1968-09-26 1976-01-27 Hochiki Kabushiki Kaisha Smoke detector adapted to a smoke sensing apparatus
US3953844A (en) * 1973-04-11 1976-04-27 Celesco Industries Inc. Incipient fire detector
US3849685A (en) * 1973-06-22 1974-11-19 Honeywell Inc Ionization chamber with recessed radioactive body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7823438B2 (en) 2005-01-24 2010-11-02 Calectro Ab Fluid detector

Also Published As

Publication number Publication date
FR2391742B1 (fr) 1982-10-15

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Legal Events

Date Code Title Description
ST Notification of lapse