GB2114286B - Combination optical scattering and ionization type smoke detectors - Google Patents

Combination optical scattering and ionization type smoke detectors

Info

Publication number
GB2114286B
GB2114286B GB08202556A GB8202556A GB2114286B GB 2114286 B GB2114286 B GB 2114286B GB 08202556 A GB08202556 A GB 08202556A GB 8202556 A GB8202556 A GB 8202556A GB 2114286 B GB2114286 B GB 2114286B
Authority
GB
United Kingdom
Prior art keywords
smoke detectors
optical scattering
type smoke
combination optical
ionization type
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.)
Expired
Application number
GB08202556A
Other versions
GB2114286A (en
Inventor
Takao Fujisawa
Masayoshi Saito
Kohei Yamada
Seiji Tsubouchi
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.)
Nittan Co Ltd
Original Assignee
Nittan Co 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 Nittan Co Ltd filed Critical Nittan Co Ltd
Priority to GB08202556A priority Critical patent/GB2114286B/en
Publication of GB2114286A publication Critical patent/GB2114286A/en
Application granted granted Critical
Publication of GB2114286B publication Critical patent/GB2114286B/en
Expired 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

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)
GB08202556A 1982-01-29 1982-01-29 Combination optical scattering and ionization type smoke detectors Expired GB2114286B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08202556A GB2114286B (en) 1982-01-29 1982-01-29 Combination optical scattering and ionization type smoke detectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08202556A GB2114286B (en) 1982-01-29 1982-01-29 Combination optical scattering and ionization type smoke detectors

Publications (2)

Publication Number Publication Date
GB2114286A GB2114286A (en) 1983-08-17
GB2114286B true GB2114286B (en) 1985-07-24

Family

ID=10527964

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08202556A Expired GB2114286B (en) 1982-01-29 1982-01-29 Combination optical scattering and ionization type smoke detectors

Country Status (1)

Country Link
GB (1) GB2114286B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19512126C1 (en) * 1995-04-04 1996-09-05 Hekatron Gmbh Gas or aerosol detector, using photoreceivers and parabolic mirrors
DE19845553C2 (en) 1998-10-02 2003-10-16 Bosch Gmbh Robert fire alarm
DE102019121063A1 (en) * 2019-08-05 2021-02-11 Minimax Viking Research & Development Gmbh Housing for a detection unit for the optical detection of smoke particles

Also Published As

Publication number Publication date
GB2114286A (en) 1983-08-17

Similar Documents

Publication Publication Date Title
JPS56132690A (en) Fire detector
DE3371828D1 (en) Diffused radiation smoke detector
GB2270157B (en) Light scattering type smoke detector
GB2105852B (en) Smoke detector
GB2137338B (en) Scattered light type smoke detector
AU572517B2 (en) Fire detector and electrode arrangement
JPS57135342A (en) Front dispersed smoke detector
GB2212656B (en) Ionization smoke detector
IL68717A0 (en) Smoke detector of the ionization type
GB8830036D0 (en) Ionization smoke detector
JPS5760493A (en) Fire detector
GB2081004B (en) Flame ionisation detector
DE3275880D1 (en) Light extinction smoke detector
GB2105987B (en) Smoke and fire protection screen
GB2152276B (en) Ionization detectors
GB2152722B (en) Analog-type fire detector
GB2092820B (en) Ionization smoke detector
GB2092792B (en) Ionization smoke detector system
GB2080992B (en) Combination type fire detector
GB2114286B (en) Combination optical scattering and ionization type smoke detectors
DE3269638D1 (en) Ionization chamber for smoke detector and the like
GB2163551B (en) Light-scattering type smoke detector
GB8506035D0 (en) Scattered-light type smoke detector
GB2091485B (en) Ionization smoke detector
GB2144544B (en) Fire detectors

Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20020128