FR2393303A1 - Detecteur a chambre d'ionisation - Google Patents

Detecteur a chambre d'ionisation

Info

Publication number
FR2393303A1
FR2393303A1 FR7719956A FR7719956A FR2393303A1 FR 2393303 A1 FR2393303 A1 FR 2393303A1 FR 7719956 A FR7719956 A FR 7719956A FR 7719956 A FR7719956 A FR 7719956A FR 2393303 A1 FR2393303 A1 FR 2393303A1
Authority
FR
France
Prior art keywords
ionization chamber
electrode
detector
chamber detector
smoke
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
FR7719956A
Other languages
English (en)
Other versions
FR2393303B1 (fr
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.)
Chloride Group Ltd
Original Assignee
Chloride Group 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
Priority claimed from GB2766876A external-priority patent/GB1581236A/en
Application filed by Chloride Group Ltd filed Critical Chloride Group Ltd
Publication of FR2393303A1 publication Critical patent/FR2393303A1/fr
Application granted granted Critical
Publication of FR2393303B1 publication Critical patent/FR2393303B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
    • G01N27/66—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage
    • 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

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

Détecteur de fumée. Il comporte une chambre d'ionisation avec une électrode centrale protégée par un manchon isolant sauf au niveau d'une petite surface à proximité d'une électrode de mesure, une deuxième électrode étant constituée par une paroi perforée de la chambre d'ionieation. Le détecteur est très sensible à la présence de fumée, en raison de la concentration du champ electrique entre l'électrode de mesure et la partie exposée de l'électrode centrale. Application notamment pour alarme au feu.
FR7719956A 1976-07-02 1977-06-29 Detecteur a chambre d'ionisation Granted FR2393303A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2766876A GB1581236A (en) 1976-07-02 1976-07-02 Ionisation detector chamber
GB3882576 1976-09-20

Publications (2)

Publication Number Publication Date
FR2393303A1 true FR2393303A1 (fr) 1978-12-29
FR2393303B1 FR2393303B1 (fr) 1982-10-29

Family

ID=26258938

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7719956A Granted FR2393303A1 (fr) 1976-07-02 1977-06-29 Detecteur a chambre d'ionisation

Country Status (8)

Country Link
US (1) US4328424A (fr)
JP (1) JPS5333600A (fr)
CA (1) CA1091826A (fr)
CH (1) CH616768A5 (fr)
DE (1) DE2729599A1 (fr)
FR (1) FR2393303A1 (fr)
IE (1) IE45520B1 (fr)
IL (1) IL52357A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1603702A (en) * 1978-04-11 1981-11-25 Chloride Group Ltd Ionisation detector chamber
FR2438841A1 (fr) * 1978-10-13 1980-05-09 Commissariat Energie Atomique Capteur ionique pour detecteur d'incendie
JPS58189954U (ja) * 1982-06-14 1983-12-16 ニッタン株式会社 イオン化式煙感知器
JPS6044193U (ja) * 1983-09-05 1985-03-28 能美防災工業株式会社 イオン化式煙感知器
GB2182198B (en) * 1985-10-31 1991-05-15 Gent Ltd Ionisation detection chamber
US4937562A (en) * 1987-12-26 1990-06-26 Hochiki Corp. Moisture-proof ionization smoke detector
JPH01102991U (fr) * 1987-12-26 1989-07-12
US5327119A (en) * 1989-12-22 1994-07-05 Hochiki Kabushiki Kaisha Ionizing smoke sensor
JPH03196292A (ja) * 1989-12-25 1991-08-27 Hochiki Corp イオン化式煙感知器
US7592922B2 (en) * 2007-01-18 2009-09-22 Michael E. La Vigne Smoke detector guard concentrator
CN106155861A (zh) * 2015-04-22 2016-11-23 鸿富锦精密工业(武汉)有限公司 电子设备报警电路

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2108895A1 (fr) * 1970-10-16 1972-05-26 Gamma Electronic
FR2244218A1 (fr) * 1973-09-17 1975-04-11 Rft Messelektronik Dresden Veb
US3935492A (en) * 1970-11-13 1976-01-27 Nittan Company, Ltd. Ionization smoke detector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4044263A (en) * 1975-01-28 1977-08-23 Walter Kidde & Company, Inc. Ionization dual-zone static detector having single radioactive source

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2108895A1 (fr) * 1970-10-16 1972-05-26 Gamma Electronic
US3935492A (en) * 1970-11-13 1976-01-27 Nittan Company, Ltd. Ionization smoke detector
FR2244218A1 (fr) * 1973-09-17 1975-04-11 Rft Messelektronik Dresden Veb

Also Published As

Publication number Publication date
IE45520B1 (en) 1982-09-22
CH616768A5 (fr) 1980-04-15
FR2393303B1 (fr) 1982-10-29
JPS5333600A (en) 1978-03-29
CA1091826A (fr) 1980-12-16
DE2729599A1 (de) 1978-02-02
IL52357A (en) 1979-11-30
IL52357A0 (en) 1977-08-31
US4328424A (en) 1982-05-04
IE45520L (en) 1978-01-02

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Legal Events

Date Code Title Description
ST Notification of lapse