JPS52156680A - Smoke sensor of photoelectric type - Google Patents

Smoke sensor of photoelectric type

Info

Publication number
JPS52156680A
JPS52156680A JP7417776A JP7417776A JPS52156680A JP S52156680 A JPS52156680 A JP S52156680A JP 7417776 A JP7417776 A JP 7417776A JP 7417776 A JP7417776 A JP 7417776A JP S52156680 A JPS52156680 A JP S52156680A
Authority
JP
Japan
Prior art keywords
smoke sensor
photoelectric type
smoke
dusts
shielded
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
JP7417776A
Other languages
Japanese (ja)
Other versions
JPS5547808B2 (en
Inventor
Hiroaki Mamiya
Shigeru Matsumoto
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 JP7417776A priority Critical patent/JPS52156680A/en
Publication of JPS52156680A publication Critical patent/JPS52156680A/en
Publication of JPS5547808B2 publication Critical patent/JPS5547808B2/ja
Granted 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 prevent an erroneous warning from being issued by the dusts in the air by detecting the scattered light due to the existence of smoke by means of a light receiving element which is shielded by a shielding metal plate.
JP7417776A 1976-06-22 1976-06-22 Smoke sensor of photoelectric type Granted JPS52156680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7417776A JPS52156680A (en) 1976-06-22 1976-06-22 Smoke sensor of photoelectric type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7417776A JPS52156680A (en) 1976-06-22 1976-06-22 Smoke sensor of photoelectric type

Publications (2)

Publication Number Publication Date
JPS52156680A true JPS52156680A (en) 1977-12-27
JPS5547808B2 JPS5547808B2 (en) 1980-12-02

Family

ID=13539611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7417776A Granted JPS52156680A (en) 1976-06-22 1976-06-22 Smoke sensor of photoelectric type

Country Status (1)

Country Link
JP (1) JPS52156680A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026585A (en) * 1973-07-06 1975-03-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026585A (en) * 1973-07-06 1975-03-19

Also Published As

Publication number Publication date
JPS5547808B2 (en) 1980-12-02

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