EP0707207A2 - Détecteur de fumée - Google Patents

Détecteur de fumée Download PDF

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Publication number
EP0707207A2
EP0707207A2 EP95113253A EP95113253A EP0707207A2 EP 0707207 A2 EP0707207 A2 EP 0707207A2 EP 95113253 A EP95113253 A EP 95113253A EP 95113253 A EP95113253 A EP 95113253A EP 0707207 A2 EP0707207 A2 EP 0707207A2
Authority
EP
European Patent Office
Prior art keywords
smoke detector
smoke
detection chamber
circuit
housing part
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
EP95113253A
Other languages
German (de)
English (en)
Other versions
EP0707207A3 (fr
EP0707207B1 (fr
Inventor
Reiner Künzel
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.)
Novar GmbH
Original Assignee
Fritz Fuss GmbH and 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 Fritz Fuss GmbH and Co filed Critical Fritz Fuss GmbH and Co
Publication of EP0707207A2 publication Critical patent/EP0707207A2/fr
Publication of EP0707207A3 publication Critical patent/EP0707207A3/fr
Application granted granted Critical
Publication of EP0707207B1 publication Critical patent/EP0707207B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a smoke detector, in particular an optical smoke detector, which works on the principle of scattered light measurement (Tyndall effect).
  • Optical smoke detectors have the advantage of responding very quickly to plastic smoldering fires, open fires and fires of liquids with smoke development.
  • a light-emitting diode and a photo element are arranged in a measuring chamber in such a way that the light emitted by the light-emitting diode cannot reach the photo element directly.
  • the measuring chamber is designed as a labyrinth or "optical sump" in which any intruding external light is absorbed.
  • Smoke particles penetrating into the measuring chamber scatter and reflect the measuring light beam emitted by the light-emitting diode.
  • the scattered or reflected light is detected by the photo element, converted into a voltage signal and evaluated in a downstream electronic circuit, which may trigger an alarm.
  • the smoke detectors are subject to the usual environmental conditions such as dirt, dust, smoke, etc. Therefore, the sensitive measuring chamber in particular must be checked at regular intervals and cleaned if necessary, so that the required responsiveness is guaranteed.
  • the measuring chamber has been cleaned by the manufacturer of the smoke detector. To do this, the smoke detector must be "picked” and replaced with a new one. The picked smoke alarm is then sent to the manufacturer for cleaning. This procedure is quite cumbersome and requires a considerable amount of time and money.
  • a smoke detector in which a detection chamber is located in a housing and is designed as an exchangeable insert.
  • the detection chamber contains a smoke sensor and an electrical adaptation circuit.
  • An electronic signal processing and alarm evaluation circuit is arranged, for example, in the housing of the smoke detector.
  • the detection chamber according to the invention thus has only a few cheap components. It can therefore also be designed for use as a disposable insert.
  • the adaptation circuit can ensure that each detection chamber is compatible with every signal processing and alarm evaluation circuit, ie for example the signal outputs of the detection chambers and the signal inputs of the signal processing and alarm evaluation circuits meet predetermined specifications. This ensures that the required sensitivity of the smoke detector for smoke aerosols is maintained even with any exchange and assignment of the detection chamber and signal processing and alarm evaluation circuit.
  • the adaptation circuit allows, in particular, the electrical and / or photoelectric tolerances of the smoke sensor and the mechanical tolerances of the optical system of the detection chamber to be compared. This comparison can advantageously be carried out in the factory. It is preferably carried out so that the output signal of the electrical matching circuit is proportional to the smoke density. The same applies to an adjustment of the signal processing and alarm evaluation circuit.
  • the adaptation circuit and the signal processing and alarm evaluation circuit can advantageously be connected to one another by an interface via which signals can be transmitted.
  • the interface preferably contains an electrical connector.
  • the detection chamber can be exchanged particularly easily.
  • the detection chamber preferably contains a light-emitting element, for example a light-emitting diode, and a light-sensitive element, for example a photo element.
  • a light-emitting element for example a light-emitting diode
  • a light-sensitive element for example a photo element
  • the smoke detector has an upper housing part and a lower housing part.
  • the signal processing and alarm evaluation circuit is preferably arranged in the lower housing part.
  • the housing can be opened in a simple manner in order to check or replace the detection chamber.
  • the signal processing and alarm evaluation circuit is easily accessible in this way.
  • the smoke detector has an upper housing part 1, a detection chamber 2 and a lower housing part 9.
  • the upper housing part 1 has an upper section into which the detection chamber 2 fits and a lower section in which the lower housing part 9 can be countersunk.
  • the upper housing part 1 has a plurality of openings 10 through which smoke can enter the interior of the housing and thus the detection chamber 2.
  • the detection chamber 2 is constructed in exactly the same way as in the prior art mentioned at the outset, ie it contains a light-emitting diode 4 as a light-emitting element, a photo element 5 as a light-sensitive element and a labyrinth 7 as an optical sump.
  • the detection chamber 2 has a circuit board with an electrical adaptation circuit 6 on its underside. Half of an electrical connector 8 is also attached to this circuit board.
  • a further circuit board with an electronic signal processing and alarm evaluation circuit 3 is attached in the lower housing part 9.
  • the other half of the electrical connector 8 is fastened on this further circuit board.
  • the detection chamber 2 is designed as an easily replaceable insert and for this purpose has a snap mechanism 11 and a guide sleeve 12 on its top, with the aid of which the detection chamber 2 can be hooked or centered in corresponding recesses in the upper housing part 1 in a manner known per se.
  • the detection chamber 2 On its underside, the detection chamber 2 has depressions in which guide sleeves 13 of the lower housing part 9 can engage in the same way.
  • the lower housing part 9 is guided by the guide sleeves 12; 13 and the detection chamber 2 can be screwed directly to the upper housing part 1.
  • the lower housing part 9 together with the detection chamber 2 can therefore be removed from the upper housing part 1 after loosening the screws. If the detection chamber 2 is dirty and needs to be replaced, it is removed from the lower housing part 9. Then a new detection chamber 2 is plugged onto the lower housing part 9 and both parts are screwed to the upper housing part 1.
  • other known connection techniques such as snap locks or the like, can of course also be provided.
  • the light-emitting diode 4 and the photo element 5 are connected to the electrical matching circuit 6.
  • the electrical matching circuit 6 and the signal processing and alarm evaluation circuit 3 are equipped with an interface 14, which preferably contains an electrical connector.
  • the signal processing and alarm evaluation circuit 3 also has an alarm output and a fault output, by means of which an alarm can be triggered or a fault display can be effected.
  • the signal transmission between the adaptation circuit 6 and the signal processing and alarm evaluation circuit 3 and the power supply for the light-emitting diode 4, the photo element 5 and the adaptation circuit 6 take place inductively.

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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
EP95113253A 1994-10-10 1995-08-23 Détecteur de fumée Expired - Lifetime EP0707207B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9416314U 1994-10-10
DE9416314U DE9416314U1 (de) 1994-10-10 1994-10-10 Rauchmelder

Publications (3)

Publication Number Publication Date
EP0707207A2 true EP0707207A2 (fr) 1996-04-17
EP0707207A3 EP0707207A3 (fr) 1998-05-13
EP0707207B1 EP0707207B1 (fr) 2005-02-09

Family

ID=6914712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95113253A Expired - Lifetime EP0707207B1 (fr) 1994-10-10 1995-08-23 Détecteur de fumée

Country Status (4)

Country Link
EP (1) EP0707207B1 (fr)
CN (1) CN1133461A (fr)
AT (1) ATE289062T1 (fr)
DE (2) DE9416314U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2813428A1 (fr) * 2000-08-25 2002-03-01 Arana Juan Carlos Ceron Dispositif pour la protection, l'installation et la maintenance des cameras de surveillance dans les transports en commun
KR100453489B1 (ko) * 2001-04-24 2004-10-15 마츠시다 덴코 가부시키가이샤 화재 감지기
US9970912B2 (en) 2012-09-27 2018-05-15 Utc Fire & Security Americas Corporation, Inc. Modular smoke detection system
US11887450B2 (en) 2018-05-09 2024-01-30 Carrier Corporation Smoke chamber for multiwave multiangle smoke detector

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10135762A1 (de) * 2001-07-23 2003-02-13 Luxmate Controls Gmbh Dornbirn Raumsensor mit Montageadapter
EP1376505B1 (fr) * 2002-06-20 2006-02-15 Siemens Schweiz AG Détecteur d'incendie
CN107195160A (zh) * 2017-06-21 2017-09-22 深圳市泰和安科技有限公司 烟雾探测器及其安装检测方法
DE102018125494A1 (de) * 2018-10-15 2020-04-16 Bombardier Transportation Gmbh Rauchmelder zum streckenweisen Detektieren von Rauch, sowie Fahrzeug aufweisend einen Rauchmelder

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2130889A1 (de) 1970-07-23 1972-02-03 Cerberus Ag Ionisationsfeuermelder
DE2205797A1 (de) 1971-02-09 1972-08-24 Langeron R Automatische Überwachungseinrichtung
DE2250820A1 (de) 1971-10-20 1973-04-26 Securitas Ab Bevaknings Mess- bzw. anzeigegeraet fuer rauch od. dgl
DE2652970A1 (de) 1976-11-22 1978-05-24 Hartwig Ing Grad Beyersdorf Ionisations-brandmelder
FR2524179A2 (fr) 1977-04-08 1983-09-30 Hugon Emile Detecteur de fumees velocimetrique a modules interchangeables
US4672217A (en) 1985-04-05 1987-06-09 General Signal Corporation Easily cleaned photoelectric smoke detector
EP0349403A2 (fr) 1988-06-30 1990-01-03 Emile Hugon Détecteur de fumées avec circuit intégré pour adresse
EP0399244A2 (fr) 1989-05-02 1990-11-28 Nohmi Bosai Kabushiki Kaisha Détecteur de fumée du type à lumière dispersée

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980997A (en) * 1974-07-17 1976-09-14 General Signal Corporation Smoke detector
US4249082A (en) * 1977-09-20 1981-02-03 Cybernet Electronics Corporation Photoelectric smoke sensor box
CH621640A5 (fr) * 1977-11-21 1981-02-13 Cerberus Ag
US4906978A (en) * 1986-12-24 1990-03-06 Cerberus Ag Optical smoke detector
JPH06511554A (ja) * 1991-10-14 1994-12-22 ビジョン　システムズ　インコーポレイティド 汚染度検出器用の測定室に関する改良

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2130889A1 (de) 1970-07-23 1972-02-03 Cerberus Ag Ionisationsfeuermelder
DE2205797A1 (de) 1971-02-09 1972-08-24 Langeron R Automatische Überwachungseinrichtung
DE2250820A1 (de) 1971-10-20 1973-04-26 Securitas Ab Bevaknings Mess- bzw. anzeigegeraet fuer rauch od. dgl
DE2652970A1 (de) 1976-11-22 1978-05-24 Hartwig Ing Grad Beyersdorf Ionisations-brandmelder
FR2524179A2 (fr) 1977-04-08 1983-09-30 Hugon Emile Detecteur de fumees velocimetrique a modules interchangeables
US4672217A (en) 1985-04-05 1987-06-09 General Signal Corporation Easily cleaned photoelectric smoke detector
EP0349403A2 (fr) 1988-06-30 1990-01-03 Emile Hugon Détecteur de fumées avec circuit intégré pour adresse
EP0399244A2 (fr) 1989-05-02 1990-11-28 Nohmi Bosai Kabushiki Kaisha Détecteur de fumée du type à lumière dispersée

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2813428A1 (fr) * 2000-08-25 2002-03-01 Arana Juan Carlos Ceron Dispositif pour la protection, l'installation et la maintenance des cameras de surveillance dans les transports en commun
KR100453489B1 (ko) * 2001-04-24 2004-10-15 마츠시다 덴코 가부시키가이샤 화재 감지기
US9970912B2 (en) 2012-09-27 2018-05-15 Utc Fire & Security Americas Corporation, Inc. Modular smoke detection system
US11887450B2 (en) 2018-05-09 2024-01-30 Carrier Corporation Smoke chamber for multiwave multiangle smoke detector

Also Published As

Publication number Publication date
DE9416314U1 (de) 1994-12-01
ATE289062T1 (de) 2005-02-15
EP0707207A3 (fr) 1998-05-13
CN1133461A (zh) 1996-10-16
EP0707207B1 (fr) 2005-02-09
DE59510989D1 (de) 2005-03-17

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