WO2004066237A1 - Alarme-incendie - Google Patents

Alarme-incendie Download PDF

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Publication number
WO2004066237A1
WO2004066237A1 PCT/GB2004/000124 GB2004000124W WO2004066237A1 WO 2004066237 A1 WO2004066237 A1 WO 2004066237A1 GB 2004000124 W GB2004000124 W GB 2004000124W WO 2004066237 A1 WO2004066237 A1 WO 2004066237A1
Authority
WO
WIPO (PCT)
Prior art keywords
alarm
detector
rise
detecting
housing
Prior art date
Application number
PCT/GB2004/000124
Other languages
English (en)
Inventor
Diana Burlington
Original Assignee
Diana Burlington
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 Diana Burlington filed Critical Diana Burlington
Priority to EP04702370A priority Critical patent/EP1590778A1/fr
Publication of WO2004066237A1 publication Critical patent/WO2004066237A1/fr

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/20—Status alarms responsive to moisture
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
    • G08B19/005—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow combined burglary and fire alarm systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/16—Combustible gas alarms
    • 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

  • This invention relates to a fire alarm and, more particularly but not necessarily, to a personal portable fire alarm for detection of a fire in its vicinity, and including means to alert the user accordingly.
  • US Patent Number 4321591 describes aportable, battery-powered multiple warning device including a smoke detector, a gas detector, an alarm clock and/or burglar alarm contained within a single unit which can be easily carried by a user and which includes an audible alarm which is activated in the event that smoke or gas is detected so as to alert the user.
  • One such smoke detector comprises a light emitter and detector arranged within a housing having apertures therein. Under normal circumstances, the detector receives light from the emitter at some maximum intensity. In the event of a fire, smoke enters the housing and smoke particles in the light path between the emitter and the detector cause the intensity of light reaching the detector to be reduced or infra-red light from the source is scattered by smoke particles and this scattered light is detected by an infra-red detector. In response to the reduced light intensity or the detection of scattered light, an alarm is triggered.
  • this type of smoke detector is not particularly suitable for use as a portable fire alarm because of the risk of contamination: it will be appreciated that a portable alarm is likely to be carried around in a user's luggage or pocket such that dust and fabric particles, and the like, may enter the alarm housing and interrupt the light path, thereby causing false alarms to be triggered and reducing the overall effectiveness of the device.
  • Another known type of smoke detector employs a radioactive material to detect smoke. However, the use of radioactive material in a portable alarm is obviously undesirable and may be dangerous, particularly in the event that the device becomes damaged.
  • a fire alarm comprising means for detecting one or more combustion gases, particularly but not necessarily exclusively carbon monoxide, in the vicinity of said fire alarm, means for detecting a rise in temperature in the vicinity of said fire alarm, and means for causing an alarm to be triggered in response to detection of one or more said combustion gases and in response to detection of a rise in said temperature.
  • the means for detecting the presence of one or more combustion gases preferably comprises a carbon monoxide detector which may be arranged to test the air either continuously or periodically at a predetermined rate.
  • the means for causing an alarm to be triggered is then beneficially set to detect that the quantity of detected carbon monoxide exceeds some predetermined threshold, say 30 parts per million or less.
  • the sensitivity of the alarm is set so as to ensure that it is suitable for detecting fire, but an additional advantage is, of course, that it will also detect the presence of carbon monoxide caused by faulty appliances and the like, as the quantity of carbon monoxide given off under such circumstances is significantly higher than the threshold level required to detect fire.
  • the means for causing an alarm to be triggered preferably also includes a rate of rise in temperature detector, such that in the event that a rise in temperature is detected in the vicinity of the alarm, the alarm will be triggered only if the rate of rise in temperature exceeds some predetermined threshold level.
  • the present invention provides a fire alarm which is suitable for detecting smouldering fires and fires having pockets of intense heat equally effectively, and which is safe and robust. Accordingly, the fire alarm of the present invention may be provided as a portable unit.
  • the provision of a rate of rise of temperature detector to detect the presence of a fire has the advantage of being lower in cost than conventional smoke detection means, results in easier assembly of the unit in view of the lack of additional components and mouldings, and the elimination of the requirement for careful alignment of opto devices.
  • Such a detector is also very sensitive, and may be designed to detect, for example, a 2°C per minute rise in temperature and it is also relatively easy to make such means water/moisture proof by, for example, covering the circuit board embodying such means with conformal coating lacquer, which is a big advantage when the user is, for example, boarding or camping in a wet environment.
  • the alarm may also include means for detecting the presence and/or level of liquid in the vicinity thereof, and means for causing an alarm to be triggered in the event that the level of liquid in the vicinity of the alarm exceeds some predetermined level, thereby alerting the user that there is a flood.
  • means may be provided to hang or otherwise mount the alarm unit at some height within an area, so that the alarm will be triggered in the event that liquid is detected at that height.
  • the liquid detector preferably tests its surroundings continuously.
  • a water level detector is removably connected to the main body of the alarm unit by, for example, a thin flexible lead, so that the water detector can be hung at or close to ground level with the rest of the device remaining well above ground level.
  • Means may be provided for winding the lead around the removable section of the device to tidy it away.
  • the alarm means may comprise an audible sounder and/or a vibrating mechanism.
  • the device may be arranged to activate a different alarm in response to different types of danger.
  • the alarm may comprise a piezo electric sounder disc, which may be fitted into a resonant cavity provided in the device housing, or more preferably it may comprise an electromagnetic sounder, which tends to be smaller than its piezo electric counterpart.
  • the device may incorporate other types of detector and/or alarm, such as a personal attack alarm for activation by the user in the event that they are in danger, detecting means (e.g. PIR) for detecting movement or heat in the vicinity of the device for early detection of predators, rodents and/or intruders.
  • detecting means e.g. PIR
  • the device may also include means for detecting LPG (propane gas) for use, in particular, in boats, yachts, caravans, etc. Means are preferably provided to mount such LPG detection means low relative to the rest of the device because LPG is heavier than air.
  • Figure 1 is a perspective view of a portable warning device according to an exemplary embodiment of the present invention.
  • Figure 2 is a front view of the device of Figure 1;
  • Figure 3 is a side cross-sectional view of the device of Figure 1;
  • Figure 4 is a circuit diagram representing an exemplary implementation of a warning device according to an embodiment of the present invention.
  • a portable warning device comprises a generally circular moulded plastics housing 10.
  • the housing 10 is provided with a main vent 12 for allowing the ingress of air from the outer surroundings into the housing for testing.
  • a cavity 14 contains the batteries 16 to supply power to the device, the cavity 14 being provided with a cover 32, which can be removed by rotating it relative to the housing 10.
  • the batteries 16 contact terminal 34 in the cavity 14 for connection to a printed circuit board (PCB) carrying the electrical circuit (see Figure 4), and a strap 18 is attached to the housing 10 via a loop 20 at the top for hanging the device at a convenient height in the user's accommodation.
  • PCB printed circuit board
  • the overlapping portion between the housing 10 and the cover 32 provides a lip 34 to retain the strap 18.
  • a water detecting probe 22 is attached to the device via a flexible lead which is wound on a spool 24 in the housing. When in use, the user unwinds the lead from the spool 24 so that the water detecting probe 22 hangs down below the device (although the detecting probe 22 still works even if the lead is wound on the spool 24).
  • the device may also have socket 26 for connecting another type of detector device, if required.
  • a rate of rise of temperature detector (100 - see Figure 4), carbon monoxide detector (200 - see Figure 4) and microprocessor (300 - see Figure 4) which registers an output from various detectors and sounds an alarm (SPK1 - see Figure 4), are housed within the housing 10.
  • the carbon monoxide detector (200 - see Figure 4) may comprise an electrochemical CO sensor including a substance which reacts with carbon monoxide and a number of electrodes, typically a mixture of active transition metals bound to the surface of a PTEE membrane so as to have a very high surface area. The metals act as a catalyst to speed up any chemical reaction while remaining unchanged themselves.
  • the carbon monoxide detector and alarm means are preferably arranged to trigger the alarm in the event that the quantity of CO detected exceeds some predetermined threshold value, say around 30ppm or less.
  • the device further comprises a switch 28 for turning the device on and off.
  • One or more LED's 30 may be provided to indicate that the device is switched on.
  • the or one of the LED's may be arranged to change colour or otherwise indicate that the battery power is low.
  • air from the surrounding area enters the housing 10 through the main vent 12 (and/or an optional secondary vent 36) where it can be tested by the carbon monoxide detector 200, and the rate of rise of temperature detector 100. If either of those detectors registers it detection variable at a level greater than some predetermined threshold the alarm is sounded to alert the user of potential danger.
  • the water detecting probe 22 is arranged to sound the alarm in the event that it comes into contact with water, to indicate flooding.
  • the device may also include an LPG detector which is detachable from the device and mountable at a lower position relative thereto, which causes the alarm to sound in the event that LPG is detected.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

L'invention concerne un dispositif d'alerte portable comprenant un logement en plastique moulé (10) généralement circulaire qui est équipé d'un évent principal (12) permettant l'entrée d'air de l'environnement extérieur vers le logement à des fins d'analyse. Une sonde de détection d'eau (22) est fixée au dispositif par l'intermédiaire d'un fil souple qui est enroulé sur un tiroir cylindrique (24) dans le logement. Lors de l'utilisation, l'utilisateur déroule le fil du tiroir cylindrique (24) de sorte que la sonde de détection d'eau (22) est suspendue sous le dispositif. Un détecteur de taux d'élévation de température (100), un détecteur de monoxyde de carbone (200) et un microprocesseur (300) qui enregistre une sortie de plusieurs détecteurs et déclenche une alarme (SPK1) sont logés dans le logement (10). Lors de l'utilisation, de l'air de la zone environnante entre dans le logement (10) par l'intermédiaire de l'évent principal (12) et/ou d'un éventuel évent secondaire (36) où il peut être analysé par le détecteur de monoxyde de carbone (200) et par le détecteur de taux d'élévation de température (100). Si l'un desdits détecteurs enregistre sa variable de détection à un niveau supérieur à un certain seuil prédéterminé, l'alarme se déclenche pour alerter l'utilisateur d'un danger éventuel. La sonde de détection d'eau (22) est conçue pour déclencher l'alarme lorsqu'elle vient en contact avec l'eau, afin d'indiquer une inondation. Le dispositif peut également comprendre un détecteur de GPL qui est peut être détaché du dispositif et peut être monté au niveau d'une position inférieure relativement à ce dernier, ce qui entraîne le déclenchement de l'alarme lorsque du GPL est détecté.
PCT/GB2004/000124 2003-01-18 2004-01-15 Alarme-incendie WO2004066237A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04702370A EP1590778A1 (fr) 2003-01-18 2004-01-15 Alarme-incendie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0301213A GB2397422A (en) 2003-01-18 2003-01-18 Portable warning device
GB0301213.5 2003-01-18

Publications (1)

Publication Number Publication Date
WO2004066237A1 true WO2004066237A1 (fr) 2004-08-05

Family

ID=9951416

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/000124 WO2004066237A1 (fr) 2003-01-18 2004-01-15 Alarme-incendie

Country Status (3)

Country Link
EP (1) EP1590778A1 (fr)
GB (1) GB2397422A (fr)
WO (1) WO2004066237A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9218732B2 (en) 2013-10-02 2015-12-22 Fibar Group S.A. Integrated flood and temperature sensor for use in a home network environment
WO2016024144A1 (fr) * 2014-08-12 2016-02-18 Fibar Group sp. z.o.o. Détecteur d'inondation
JP2021068341A (ja) * 2019-10-28 2021-04-30 新コスモス電機株式会社 警報器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006050902A1 (de) * 2006-10-28 2008-05-08 Töteberg, Andreas Warnsystem zur Früherkennung von Rauchgasdurchzündungen
GB2447472A (en) * 2007-03-13 2008-09-17 Thorn Security Detector with a replaceable detector element
CN105092791B (zh) * 2015-08-12 2017-04-26 福建美营自动化科技有限公司 一种易燃易爆气体检测装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4841282A (en) * 1988-07-05 1989-06-20 Reis Gustave A Smoke and liquid alarm
FR2628558A1 (fr) * 1988-03-14 1989-09-15 Scl Security Computer Line Srl Dispositif portatif et autonome ayant plusieurs fonctions de securite et d'alarme programmables
US5283549A (en) * 1991-05-31 1994-02-01 Intellitech Industries, Inc. Infrared sentry with voiced radio dispatched alarms
US5461365A (en) * 1994-10-27 1995-10-24 Schlager; Dan Multi-hazard alarm system using selectable power-level transmission and localization
WO2000021046A1 (fr) * 1998-10-02 2000-04-13 Robert Bosch Gmbh Avertisseur d'incendie
US6392536B1 (en) * 2000-08-25 2002-05-21 Pittway Corporation Multi-sensor detector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716582A (en) * 1983-04-27 1987-12-29 Phonetics, Inc. Digital and synthesized speech alarm system
US4716402A (en) * 1985-11-12 1987-12-29 Francis Paul S Modular personal security device
US6144310A (en) * 1999-01-26 2000-11-07 Morris; Gary Jay Environmental condition detector with audible alarm and voice identifier
GB9915388D0 (en) * 1999-07-02 1999-09-01 Secr Defence System for fire-out gas detection
GB0102355D0 (en) * 2001-01-30 2001-03-14 Mygard Plc Security system
US6611204B2 (en) * 2001-04-16 2003-08-26 Maple Chase Company Hazard alarm, system, and communication therefor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628558A1 (fr) * 1988-03-14 1989-09-15 Scl Security Computer Line Srl Dispositif portatif et autonome ayant plusieurs fonctions de securite et d'alarme programmables
US4841282A (en) * 1988-07-05 1989-06-20 Reis Gustave A Smoke and liquid alarm
US5283549A (en) * 1991-05-31 1994-02-01 Intellitech Industries, Inc. Infrared sentry with voiced radio dispatched alarms
US5461365A (en) * 1994-10-27 1995-10-24 Schlager; Dan Multi-hazard alarm system using selectable power-level transmission and localization
WO2000021046A1 (fr) * 1998-10-02 2000-04-13 Robert Bosch Gmbh Avertisseur d'incendie
US6392536B1 (en) * 2000-08-25 2002-05-21 Pittway Corporation Multi-sensor detector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9218732B2 (en) 2013-10-02 2015-12-22 Fibar Group S.A. Integrated flood and temperature sensor for use in a home network environment
WO2016024144A1 (fr) * 2014-08-12 2016-02-18 Fibar Group sp. z.o.o. Détecteur d'inondation
JP2021068341A (ja) * 2019-10-28 2021-04-30 新コスモス電機株式会社 警報器
JP7441026B2 (ja) 2019-10-28 2024-02-29 新コスモス電機株式会社 警報器

Also Published As

Publication number Publication date
EP1590778A1 (fr) 2005-11-02
GB2397422A (en) 2004-07-21
GB0301213D0 (en) 2003-02-19

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