FR2438305A1 - Detecteur optique de fumee - Google Patents

Detecteur optique de fumee

Info

Publication number
FR2438305A1
FR2438305A1 FR7925029A FR7925029A FR2438305A1 FR 2438305 A1 FR2438305 A1 FR 2438305A1 FR 7925029 A FR7925029 A FR 7925029A FR 7925029 A FR7925029 A FR 7925029A FR 2438305 A1 FR2438305 A1 FR 2438305A1
Authority
FR
France
Prior art keywords
smoke
detector
optical
prevent
smoke detector
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Withdrawn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
FR7925029A
Other languages
English (en)
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.)
American District Telegraph Co
Original Assignee
American District Telegraph Co
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 American District Telegraph Co filed Critical American District Telegraph Co
Publication of FR2438305A1 publication Critical patent/FR2438305A1/fr
Withdrawn legal-status Critical Current

Links

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
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • 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

Abstract

DETECTEUR OPTIQUE COMPRENANT PLUSIEURS CLOISONS PARTANT D'UNE CHAMBRE NOIRE DANS LAQUELLE EST PLACE UN DETECTEUR OPTIQUE DE FUMEE. LES CLOISONS 18, 22 FORMENT DES PASSAGES QUI VONT D'ENTREES DE FUMEE SITUEES A LA PERIPHERIE EXTERIEURE VERS DES TROUS 19 DE PASSAGE DE FUMEE QUI OUVRENT SUR LA CHAMBRE NOIRE 5. LES ENTREES DE FUMEE 26 SE PROLONGENT SUR LA PERIPHERIE PRATIQUEMENT TOTALE DU DETECTEUR. CHAQUE CLOISON EST DISPOSEE A CHEVAUCHEMENT AVEC LA SUIVANTE DE MANIERE A EMPECHER LES RAYONS LUMINEUX D'ENTRER DIRECTEMENT DANS LA CHAMBRE NOIRE ET UN TREILLIS 23 EST PLACE AUTOUR DU DETECTEUR DE MANIERE A EMPECHER L'ENTREE DES INSECTES. APPLICATION AUX DETECTEURS DE FUMEE A CIRCUIT OPTO-ELECTRONIQUE.
FR7925029A 1978-10-06 1979-10-08 Detecteur optique de fumee Withdrawn FR2438305A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/949,090 US4206366A (en) 1978-10-06 1978-10-06 Optical smoke detector

Publications (1)

Publication Number Publication Date
FR2438305A1 true FR2438305A1 (fr) 1980-04-30

Family

ID=25488587

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7925029A Withdrawn FR2438305A1 (fr) 1978-10-06 1979-10-08 Detecteur optique de fumee

Country Status (6)

Country Link
US (1) US4206366A (fr)
JP (1) JPS5557995A (fr)
CA (1) CA1103779A (fr)
DE (1) DE2940520A1 (fr)
FR (1) FR2438305A1 (fr)
GB (1) GB2034028B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213878A2 (fr) * 1985-08-24 1987-03-11 Nohmi Bosai Ltd. Détecteur de fumée du type à dispersion de lumière
FR2609172A1 (fr) * 1986-12-26 1988-07-01 Hochiki Co Detecteur de fumee par lumiere dispersee
FR2613072A1 (fr) * 1987-03-27 1988-09-30 Hochiki Co Detecteur photoelectrique de fumee

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3016530A1 (de) * 1980-04-29 1981-11-05 Hekatron GmbH, 7811 Sulzburg Lichtoptische nachweisvorrichtung fuer eine schwebeteilchenkonzentration
US4584485A (en) * 1983-08-22 1986-04-22 American District Telegraph Company Optical block in smoke detectors
US4672217A (en) * 1985-04-05 1987-06-09 General Signal Corporation Easily cleaned photoelectric smoke detector
WO1991010126A1 (fr) * 1990-01-05 1991-07-11 Sredneaziatsky Nauchno-Issledovatelsky I Proektny Institut Tsvetnoi Metallurgii Dispositif pour mesurer la densite optique des gaz
EP0608309A4 (en) * 1991-10-14 1994-09-14 Iei Pty Ltd Improvements relating to a sampling chamber for a pollution detector.
GB2270157B (en) * 1992-08-28 1996-07-24 Hochiki Co Light scattering type smoke detector
JP3672777B2 (ja) * 1999-11-01 2005-07-20 ホーチキ株式会社 煙感知器及び防虫網
US7733486B2 (en) * 2007-06-27 2010-06-08 Venturedyne, Ltd. Environmental sensor including a baffle
CN101978400B (zh) * 2008-03-24 2014-06-18 松下电器产业株式会社 探测器
JP5124327B2 (ja) * 2008-03-25 2013-01-23 パナソニック株式会社 感知器
KR20100037539A (ko) * 2008-10-01 2010-04-09 노미 보사이 가부시키가이샤 광전식 연기 감지기
US8907802B2 (en) 2012-04-29 2014-12-09 Valor Fire Safety, Llc Smoke detector with external sampling volume and ambient light rejection
US8952821B2 (en) 2012-04-29 2015-02-10 Valor Fire Safety, Llc Smoke detector utilizing ambient-light sensor, external sampling volume, and internally reflected light
US9140646B2 (en) 2012-04-29 2015-09-22 Valor Fire Safety, Llc Smoke detector with external sampling volume using two different wavelengths and ambient light detection for measurement correction
US9638482B2 (en) 2013-05-22 2017-05-02 Texas Instruments Incorporated Digital detector
JP6407295B2 (ja) 2013-10-30 2018-10-17 ヴァラー ファイヤー セーフティー， エルエルシー 外部サンプリング体積および周囲光拒絶を有する煙検出器
JP5885786B2 (ja) * 2014-07-09 2016-03-15 新コスモス電機株式会社 煙感知器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460124A (en) * 1966-06-06 1969-08-05 Interstate Eng Corp Smoke detector
US3916209A (en) * 1973-07-24 1975-10-28 Electro Signal Lab Vaned baffle for optical smoke detector
US4124298A (en) * 1977-03-14 1978-11-07 Electro Signal Lab, Inc. Optical smoke detector inlet screen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213878A2 (fr) * 1985-08-24 1987-03-11 Nohmi Bosai Ltd. Détecteur de fumée du type à dispersion de lumière
EP0213878A3 (en) * 1985-08-24 1987-10-28 Nohmi Bosai Kogyo Co., Ltd. A light-scattering-type smoke detector
FR2609172A1 (fr) * 1986-12-26 1988-07-01 Hochiki Co Detecteur de fumee par lumiere dispersee
FR2613072A1 (fr) * 1987-03-27 1988-09-30 Hochiki Co Detecteur photoelectrique de fumee

Also Published As

Publication number Publication date
DE2940520A1 (de) 1980-04-17
GB2034028A (en) 1980-05-29
JPS5557995A (en) 1980-04-30
US4206366A (en) 1980-06-03
CA1103779A (fr) 1981-06-23
GB2034028B (en) 1983-01-12

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Legal Events

Date Code Title Description
ST Notification of lapse