IT1078734B - Perfezionamento nei rivelatori di fumo - Google Patents

Perfezionamento nei rivelatori di fumo

Info

Publication number
IT1078734B
IT1078734B IT50372/76A IT5037276A IT1078734B IT 1078734 B IT1078734 B IT 1078734B IT 50372/76 A IT50372/76 A IT 50372/76A IT 5037276 A IT5037276 A IT 5037276A IT 1078734 B IT1078734 B IT 1078734B
Authority
IT
Italy
Prior art keywords
improvement
smoke detectors
detectors
smoke
Prior art date
Application number
IT50372/76A
Other languages
English (en)
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Application granted granted Critical
Publication of IT1078734B publication Critical patent/IT1078734B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
IT50372/76A 1975-07-15 1976-07-12 Perfezionamento nei rivelatori di fumo IT1078734B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50086793A JPS5855446B2 (ja) 1975-07-15 1975-07-15 散乱光式煙感知器

Publications (1)

Publication Number Publication Date
IT1078734B true IT1078734B (it) 1985-05-08

Family

ID=13896645

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50372/76A IT1078734B (it) 1975-07-15 1976-07-12 Perfezionamento nei rivelatori di fumo

Country Status (8)

Country Link
US (1) US4103997A (it)
JP (1) JPS5855446B2 (it)
CA (1) CA1064139A (it)
DE (1) DE2630843A1 (it)
FR (1) FR2318417A1 (it)
GB (1) GB1560421A (it)
IT (1) IT1078734B (it)
SE (1) SE416852B (it)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160914A (en) * 1977-12-16 1979-07-10 Monitek, Inc. Apparatus for measuring of particulate scattering in fluids
DE3018021A1 (de) * 1979-05-16 1980-11-27 Honeywell Inc Optischer rauchdetektor
EP0022438B1 (de) * 1979-07-13 1983-07-20 Securiton AG Verfahren zur Feststellung von Aerosolen in Luft, welche sich in einer Prüfzone befindet sowie Gerät zur Ausführung desselben
DE2951459C2 (de) * 1979-12-20 1984-03-29 Heimann Gmbh, 6200 Wiesbaden Optische Anordnung für einen Rauchmelder nach dem Lichtstreuungsprinzip
DE3233368A1 (de) * 1982-09-08 1984-03-08 Heimann Gmbh, 6200 Wiesbaden Strahlungsrauchmelder
DE3334545A1 (de) * 1983-09-23 1985-04-04 Siemens AG, 1000 Berlin und 8000 München Optischer rauchmelder
NL9001415A (nl) * 1990-06-21 1992-01-16 Ajax De Boer B V Optische rook-, aerosol- en stofdetector en brandmeldingsapparaat met optische detector.
GB9014015D0 (en) * 1990-06-23 1990-08-15 Dennis Peter N J Improvements in or relating to smoke detectors
GB2259763B (en) * 1991-09-20 1995-05-31 Hochiki Co Fire alarm system
WO1993008461A1 (en) * 1991-10-14 1993-04-29 I.E.I. Pty. Ltd. Improvements relating to a sampling chamber for a pollution detector
JP2648560B2 (ja) * 1993-04-09 1997-09-03 ホーチキ株式会社 散乱光式煙感知器
US6107925A (en) * 1993-06-14 2000-08-22 Edwards Systems Technology, Inc. Method for dynamically adjusting criteria for detecting fire through smoke concentration
GB9417484D0 (en) * 1993-09-07 1994-10-19 Hochiki Co Light scattering type smoke sensor
US5945924A (en) * 1996-01-29 1999-08-31 Marman; Douglas H. Fire and smoke detection and control system
GB2367358B (en) * 1997-06-30 2002-05-15 Hochiki Co Smoke detecting apparatus
DE102005010454A1 (de) 2005-03-08 2006-09-21 Robert Bosch Gmbh Gassensor
DE102008009213B4 (de) 2008-02-15 2010-09-02 Perkinelmer Optoelectronics Gmbh & Co.Kg Strahlungsleiter, Detektor, Herstellungsverfahren
US11302166B2 (en) 2019-12-02 2022-04-12 Carrier Corporation Photo-electric smoke detector using single emitter and single receiver
US11069224B1 (en) * 2020-07-10 2021-07-20 Everday Techology Co., Ltd. Smoke detector and chamber

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474435A (en) * 1966-10-11 1969-10-21 Vericon Inc Vapor or particle detection devices
US3612689A (en) * 1967-04-10 1971-10-12 American Standard Inc Suspended particle concentration determination using polarized light
US3524707A (en) * 1967-08-14 1970-08-18 Julian E Hansen Sr Pulsating light source smoke detector
US3505529A (en) * 1968-02-08 1970-04-07 Bliss Co Radiation sensitive smoke detecting device
US3621220A (en) * 1969-08-29 1971-11-16 Norman C Ford Jr Scattered light measurement providing autocorrelation function
US3701620A (en) * 1971-10-21 1972-10-31 Science Spectrum Sample scattering cell for a photometer
DE2338481C2 (de) * 1973-07-28 1985-07-04 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Vorrichtung zur schnellen Messung der zeitlichen Änderung der Strahlungsintensität

Also Published As

Publication number Publication date
CA1064139A (en) 1979-10-09
JPS5855446B2 (ja) 1983-12-09
FR2318417A1 (fr) 1977-02-11
DE2630843A1 (de) 1977-01-20
SE416852B (sv) 1981-02-09
SE7607902L (sv) 1977-01-16
GB1560421A (en) 1980-02-06
US4103997A (en) 1978-08-01
JPS5210788A (en) 1977-01-27
FR2318417B1 (it) 1979-10-12

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950729