FI921322A0 - Fotoelektrisk roekdetektor. - Google Patents

Fotoelektrisk roekdetektor.

Info

Publication number
FI921322A0
FI921322A0 FI921322A FI921322A FI921322A0 FI 921322 A0 FI921322 A0 FI 921322A0 FI 921322 A FI921322 A FI 921322A FI 921322 A FI921322 A FI 921322A FI 921322 A0 FI921322 A0 FI 921322A0
Authority
FI
Finland
Prior art keywords
roekdetector
photoelectric
photoelectric roekdetector
Prior art date
Application number
FI921322A
Other languages
English (en)
Other versions
FI921322A (fi
Inventor
Hiroshi Sawa
Hironobu Kawai
Naoki Kosugi
Original Assignee
Hochiki Co
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 Hochiki Co filed Critical Hochiki Co
Publication of FI921322A0 publication Critical patent/FI921322A0/fi
Publication of FI921322A publication Critical patent/FI921322A/fi

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
FI921322A 1991-03-29 1992-03-26 Fotoelektrisk roekdetektor FI921322A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3089279A JP2691951B2 (ja) 1991-03-29 1991-03-29 光電式煙感知器

Publications (2)

Publication Number Publication Date
FI921322A0 true FI921322A0 (fi) 1992-03-26
FI921322A FI921322A (fi) 1992-09-30

Family

ID=13966283

Family Applications (1)

Application Number Title Priority Date Filing Date
FI921322A FI921322A (fi) 1991-03-29 1992-03-26 Fotoelektrisk roekdetektor

Country Status (7)

Country Link
US (1) US5302837A (fi)
JP (1) JP2691951B2 (fi)
AU (1) AU664027B2 (fi)
CH (1) CH686157A5 (fi)
DE (1) DE4209448C2 (fi)
FI (1) FI921322A (fi)
GB (1) GB2254142B (fi)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69317147T2 (de) * 1992-04-25 1998-10-01 Nohmi Bosai Ltd Feuermelder
AU653684B2 (en) * 1992-11-04 1994-10-06 Nohmi Bosai Ltd Smoke detecting apparatus for fire alarm
GB9417484D0 (en) * 1993-09-07 1994-10-19 Hochiki Co Light scattering type smoke sensor
JP2787001B2 (ja) * 1994-12-12 1998-08-13 ホーチキ株式会社 光電式煙感知器
JPH08233736A (ja) * 1995-02-27 1996-09-13 Nohmi Bosai Ltd 微粒子検出センサ
AUPN179995A0 (en) * 1995-03-17 1995-04-13 Vision Systems Limited Improvements relating to gas pollution detection equipment
US5767777A (en) * 1995-07-31 1998-06-16 Gpu Nuclear, Inc. Continuous air monitor alarm simulator and chart recorder simulator
JP3848488B2 (ja) * 1999-04-30 2006-11-22 ニッタン株式会社 火災感知器
US6329922B1 (en) * 1999-07-27 2001-12-11 Hochiki Kabushiki Kaisha Fire detector and noise de-influence method
DE10110231A1 (de) * 2001-03-02 2002-09-26 Bosch Gmbh Robert Optische Blende
DE10118913B4 (de) 2001-04-19 2006-01-12 Robert Bosch Gmbh Streulichtrauchmelder
JP5379369B2 (ja) * 2007-10-31 2013-12-25 新コスモス電機株式会社 光電式煙感知器
HUP1300593A2 (en) * 2013-10-17 2015-05-28 Mta Agrartudomanyi Kutatokoezpont Optoelektronic device for detecting small objects
CN104200606B (zh) * 2014-07-18 2017-02-15 中国科学技术大学 一种无光学迷宫的点型光散射式感烟探测器及信号处理方法
WO2018230225A1 (ja) * 2017-06-14 2018-12-20 ホーチキ株式会社 警報装置
KR102026983B1 (ko) * 2018-03-29 2019-09-30 두산중공업 주식회사 가스터빈 내 파이프를 통과하는 유체의 오염물을 모니터링 하는 시스템 및 그 방법
EP4332937A1 (en) * 2022-08-31 2024-03-06 Carrier Corporation Masking to eliminate direct line of sight between light emitter and light receiver in a smoke detector

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099178A (en) * 1977-04-07 1978-07-04 Emdeko International, Inc. Test means for light responsive smoke detector
US4226533A (en) * 1978-09-11 1980-10-07 General Electric Company Optical particle detector
NZ203837A (en) * 1983-04-08 1986-09-10 Moygro Mfg Ltd Alarm check valve for sandwiching between flanges of pipes in automatic sprinkler system
JPS61223538A (ja) * 1985-03-29 1986-10-04 Toshiba Corp 光電式煙センサ
JPH0629727Y2 (ja) * 1985-08-24 1994-08-10 能美防災株式会社 散乱光式煙感知器の光学部
DE3628072A1 (de) * 1986-08-19 1987-04-09 Fruengel Frank Dr Ing Aerosol- und feinstaubmessgeraet nach dem streulichtprinzip
US4906978A (en) * 1986-12-24 1990-03-06 Cerberus Ag Optical smoke detector
JPS63239592A (ja) * 1987-03-27 1988-10-05 ホーチキ株式会社 光電式煙感知器
JP2533653B2 (ja) * 1989-09-26 1996-09-11 松下電工株式会社 光電式煙感知器

Also Published As

Publication number Publication date
FI921322A (fi) 1992-09-30
DE4209448A1 (de) 1992-10-01
GB9205881D0 (en) 1992-04-29
AU664027B2 (en) 1995-11-02
AU1314292A (en) 1992-10-01
GB2254142A (en) 1992-09-30
JP2691951B2 (ja) 1997-12-17
US5302837A (en) 1994-04-12
DE4209448C2 (de) 2003-02-06
GB2254142B (en) 1995-01-11
JPH05157690A (ja) 1993-06-25
CH686157A5 (fr) 1996-01-15

Similar Documents

Publication Publication Date Title
DE122006000020I1 (de) Aerosolpraparate.
DE59201883D1 (de) Tilger.
FI921322A0 (fi) Fotoelektrisk roekdetektor.
ES1016723Y (es) Boligrafo-pulverizador mejorado.
DE59105384D1 (de) Anomaloskop.
FI910942A (fi) Elementserie foer sysselsaettning.
FI914341A0 (fi) Overall.
ES1016842Y (es) Carpeta-agenda.
ES1015938Y (es) Pizarro-calendario.
ES1016478Y (es) Papelera pefeccionada.
ES1018229Y (es) Bovedilla.
ES1017618Y (es) Flexometro-trazador.
ES1017798Y (es) Garfio-soporte.
ES1018836Y (es) Cisterna-remolque.
FI86243B (fi) Foervaringskaerl foer vattendjur saosom fiskar.
ES1019520Y (es) Lapida funeraria.
ES1018067Y (es) Tarjeta-puzzle.
ES1018322Y (es) Hidrocompresor.
ES1018708Y (es) Batidora-mezcladora.
FI910001A0 (fi) Konstantfloedesregulator.
FI915370A0 (fi) Foerpackning.
FI910069A (fi) Gravitationsmaskin.
FI910040A (fi) Baerhandtag.
FI910007A (fi) Vindkraftverk.
FI910028A (fi) Staell.

Legal Events

Date Code Title Description
MA Patent expired