JPS52155587A - Cage body for light scattering type smoke detector - Google Patents

Cage body for light scattering type smoke detector

Info

Publication number
JPS52155587A
JPS52155587A JP7251676A JP7251676A JPS52155587A JP S52155587 A JPS52155587 A JP S52155587A JP 7251676 A JP7251676 A JP 7251676A JP 7251676 A JP7251676 A JP 7251676A JP S52155587 A JPS52155587 A JP S52155587A
Authority
JP
Japan
Prior art keywords
smoke detector
light scattering
cage body
scattering type
type 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.)
Pending
Application number
JP7251676A
Other languages
Japanese (ja)
Inventor
Yoshihisa Nakajima
Shuji Kamaya
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.)
Panasonic Electric Works Co Ltd
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
Priority to JP7251676A priority Critical patent/JPS52155587A/en
Publication of JPS52155587A publication Critical patent/JPS52155587A/en
Pending 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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To improve responsiveness of smoke detector constituted of cylindrical body divided into two stages upper and lower in which eave type partition walls are formed and smoke sensitive portion is placed in inner plenum room, by forming voltex vent in each of upepr and lower stage inversely in direction to right and left according to which flow of air and smoke is smoothed.
JP7251676A 1976-06-18 1976-06-18 Cage body for light scattering type smoke detector Pending JPS52155587A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7251676A JPS52155587A (en) 1976-06-18 1976-06-18 Cage body for light scattering type smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7251676A JPS52155587A (en) 1976-06-18 1976-06-18 Cage body for light scattering type smoke detector

Publications (1)

Publication Number Publication Date
JPS52155587A true JPS52155587A (en) 1977-12-24

Family

ID=13491568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7251676A Pending JPS52155587A (en) 1976-06-18 1976-06-18 Cage body for light scattering type smoke detector

Country Status (1)

Country Link
JP (1) JPS52155587A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003272059A (en) * 2002-03-14 2003-09-26 Hochiki Corp Sensor
US8933811B2 (en) 2009-10-05 2015-01-13 Cavius Aps Smoke alarm

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003272059A (en) * 2002-03-14 2003-09-26 Hochiki Corp Sensor
US8933811B2 (en) 2009-10-05 2015-01-13 Cavius Aps Smoke alarm
EP2486553B1 (en) * 2009-10-05 2015-04-15 Cavius APS Smoke alarm

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