EP1258848A3 - Optical smoke detector - Google Patents

Optical smoke detector Download PDF

Info

Publication number
EP1258848A3
EP1258848A3 EP02009657A EP02009657A EP1258848A3 EP 1258848 A3 EP1258848 A3 EP 1258848A3 EP 02009657 A EP02009657 A EP 02009657A EP 02009657 A EP02009657 A EP 02009657A EP 1258848 A3 EP1258848 A3 EP 1258848A3
Authority
EP
European Patent Office
Prior art keywords
smoke detector
optical
partitioning wall
circuit board
optical 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
EP02009657A
Other languages
German (de)
French (fr)
Other versions
EP1258848A2 (en
EP1258848B1 (en
Inventor
Gerhard Röpke
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.)
Job Lizenz GmbH and Co KG
Original Assignee
Job Lizenz GmbH and Co KG
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 Job Lizenz GmbH and Co KG filed Critical Job Lizenz GmbH and Co KG
Publication of EP1258848A2 publication Critical patent/EP1258848A2/en
Publication of EP1258848A3 publication Critical patent/EP1258848A3/en
Application granted granted Critical
Publication of EP1258848B1 publication Critical patent/EP1258848B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • 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
    • 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

Abstract

An optical smoke detector has a housing which can be mounted on the ceiling (20) of a room, a measurement chamber (54) between a lower, approximately horizontal housing wall (61), and a partitioning wall (55) which has an optical measurement path and lateral openings for entry of ambient air. A circuit board (58) is arranged spaced from, and above the partitioning wall (55) and contains, besides an electronic circuit, the optical elements (59,60) for the measurement path. A central opening (69) is provided in the partitioning wall (55) and a sound source (67) is joined via conduction lines to the circuit board (58).
EP02009657A 2001-05-19 2002-04-29 Optical smoke detector Expired - Lifetime EP1258848B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20108451U 2001-05-19
DE20108451U DE20108451U1 (en) 2001-05-19 2001-05-19 Optical smoke detector

Publications (3)

Publication Number Publication Date
EP1258848A2 EP1258848A2 (en) 2002-11-20
EP1258848A3 true EP1258848A3 (en) 2003-05-21
EP1258848B1 EP1258848B1 (en) 2009-09-02

Family

ID=7957107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02009657A Expired - Lifetime EP1258848B1 (en) 2001-05-19 2002-04-29 Optical smoke detector

Country Status (3)

Country Link
EP (1) EP1258848B1 (en)
AT (1) ATE441911T1 (en)
DE (2) DE20108451U1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200508999A (en) * 2003-08-20 2005-03-01 Clipsal Australia Pty Ltd A compact smoke alarm
GB2421620A (en) * 2004-12-23 2006-06-28 Kieron T N Chapman Fire alarm sounder
DE102008014991B3 (en) 2008-03-19 2009-03-12 Job Lizenz Gmbh & Co. Kg Gas inflow checking method for alarm device i.e. smoke alarm, involves measuring number of oscillations of acoustic signals after completion of production of acoustic signals, and comparing number of oscillations with preset value
DE102008015043A1 (en) * 2008-03-19 2009-09-24 Ista International Gmbh Smoke detectors
ES2451915R1 (en) 2012-09-27 2014-06-02 Utc Fire & Security Americas Corporation, Inc. MODULAR SMOKE DETECTION SYSTEM AND PROCEDURE FOR MOUNTING A SMOKE DETECTION SYSTEM
FR3005772B1 (en) * 2013-05-17 2017-03-31 Hager Security ELECTRONIC DEVICE PROVIDED WITH A SOUND TRANSMITTING MEANS
DE102015004458B4 (en) 2014-06-26 2016-05-12 Elmos Semiconductor Aktiengesellschaft Apparatus and method for a classifying, smokeless air condition sensor for predicting a following operating condition
DE102014019773B4 (en) 2014-12-17 2023-12-07 Elmos Semiconductor Se Device and method for distinguishing between solid objects, cooking fumes and smoke using the display of a mobile telephone
DE102014019172B4 (en) 2014-12-17 2023-12-07 Elmos Semiconductor Se Device and method for distinguishing between solid objects, cooking fumes and smoke using a compensating optical measuring system
US11961380B2 (en) 2018-06-05 2024-04-16 Electronic Modular Services Ltd. Smoke chamber as audio chamber in audible alarm devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090178A (en) * 1976-08-09 1978-05-16 Norris Elwood G Combination smoke detector and lamp structure
US4306229A (en) * 1976-03-17 1981-12-15 Nohmi Bosai Kogyo Co., Ltd. Smoke detector having an integral piezo-electric buzzer
US4388617A (en) * 1980-12-16 1983-06-14 Yoshitaka Nakanishi Fire alarm device having thermal sensitivity enhancement
GB2137390A (en) * 1983-03-07 1984-10-03 Emhart Ind Sensor assembly
US4897634A (en) * 1986-12-26 1990-01-30 Hochiki Kabushiki Kaisha Scattered-light smoke detector with a shielding structure of detector circuits
US5596314A (en) * 1994-08-01 1997-01-21 Quantum Group, Inc. Enclosure for a gas detector system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4282520A (en) * 1978-10-25 1981-08-04 Shipp John I Piezoelectric horn and a smoke detector containing same
US5990797A (en) * 1997-03-04 1999-11-23 Bkk Brands, Inc. Ultraloud smoke detector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306229A (en) * 1976-03-17 1981-12-15 Nohmi Bosai Kogyo Co., Ltd. Smoke detector having an integral piezo-electric buzzer
US4090178A (en) * 1976-08-09 1978-05-16 Norris Elwood G Combination smoke detector and lamp structure
US4388617A (en) * 1980-12-16 1983-06-14 Yoshitaka Nakanishi Fire alarm device having thermal sensitivity enhancement
GB2137390A (en) * 1983-03-07 1984-10-03 Emhart Ind Sensor assembly
US4897634A (en) * 1986-12-26 1990-01-30 Hochiki Kabushiki Kaisha Scattered-light smoke detector with a shielding structure of detector circuits
US5596314A (en) * 1994-08-01 1997-01-21 Quantum Group, Inc. Enclosure for a gas detector system

Also Published As

Publication number Publication date
DE50213808D1 (en) 2009-10-15
DE20108451U1 (en) 2002-10-02
ATE441911T1 (en) 2009-09-15
EP1258848A2 (en) 2002-11-20
EP1258848B1 (en) 2009-09-02

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