EP0024370A3 - Smoke and temperature sensitive fire signalling device - Google Patents

Smoke and temperature sensitive fire signalling device Download PDF

Info

Publication number
EP0024370A3
EP0024370A3 EP80200962A EP80200962A EP0024370A3 EP 0024370 A3 EP0024370 A3 EP 0024370A3 EP 80200962 A EP80200962 A EP 80200962A EP 80200962 A EP80200962 A EP 80200962A EP 0024370 A3 EP0024370 A3 EP 0024370A3
Authority
EP
European Patent Office
Prior art keywords
smoke
sensitive
sensor
temperature sensitive
radiation
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.)
Withdrawn
Application number
EP80200962A
Other languages
German (de)
French (fr)
Other versions
EP0024370A2 (en
Inventor
Jürg Muggli
Pater Müller
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.)
Cerberus AG
Original Assignee
Cerberus AG
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 Cerberus AG filed Critical Cerberus AG
Publication of EP0024370A2 publication Critical patent/EP0024370A2/en
Publication of EP0024370A3 publication Critical patent/EP0024370A3/en
Withdrawn legal-status Critical Current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
    • G08B17/06—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
    • 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

Bei einem rauchempfindlichen Brandmelder, bei­ spielsweise einem Ionisations-Rauchmelder oder einem optischen Streulicht-Rauchmelder, ist neben dem Rauch­ fühler, d.h. der Ionisationskammer (42) oder der Streustrah­ lungs-Rauchmesseinrichtung (36), ein temperaturempfind­ liches Element (39, 40) aus einer Formgedächtnislegierung vorgesehen, beispielsweise Ni55/Ti45, welches nach einer Kaltverformung bei Erwärmung auf eine kritische Tempera­ tur, beispielsweise bei etwa 70° C, in die ursprünglich einge­ prägte Form zurückkehrt und diese Form auch bei nachfol­ gender Wiederabkühlung beibehält. Dieses temperaturemp­ findliche Element (39, 40) aus einer Formgedächtnislegie­ rung beeinflußt durch seine Rückverformung bei Erreichen der kritischen Temperatur den Rauchfühler in der gleichen Weise, wie wenn Rauch vorhanden wäre, beispielsweise indem das Element in den Strahlungsbereich hinein­ schwenkt und den Ionenstrom herabsetzt bzw. Strahlung auf den Strahlungsempfänger streut. Die Alarmsignalgabe erfolgt dabei kontaktlos und sicher mit einer für den rauchempfindlichen Fühler und das temperaturempfindli­ che Element gemeinsamen Auswerteschaltung. With a smoke sensitive fire detector, at for example an ionization smoke detector or one optical stray light smoke detector, is next to the smoke sensor, i.e. the ionization chamber (42) or the scattering beam lungs-Rauchmesseinrichtung (36), a temperature sensitive Lich element (39, 40) made of a shape memory alloy provided, for example Ni55 / Ti45, which after a Cold forming when heated to a critical temperature tur, for example at about 70 ° C, in the originally turned embossed form returns and this form also in succession gender cools down. This temp sensitive element (39, 40) from a shape memory alloy tion influenced by its reshaping when reached the critical temperature the smoke sensor in the same Like if there was smoke, for example by placing the element into the radiation area pivots and reduces the ion current or radiation scatters on the radiation receiver. The alarm signaling is done contactlessly and securely with one for the smoke sensitive sensor and temperature sensitive che element common evaluation circuit.

EP80200962A 1979-05-21 1980-04-14 Smoke and temperature sensitive fire signalling device Withdrawn EP0024370A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4719/79 1979-05-21
CH471979A CH638101A5 (en) 1979-05-21 1979-05-21 FIRE DETECTORS.

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP80200327A Division EP0019310A1 (en) 1979-05-21 1980-04-14 Fire indicator with a temperature-sensitive element
EP80200327.7 Division 1980-04-14

Publications (2)

Publication Number Publication Date
EP0024370A2 EP0024370A2 (en) 1981-03-04
EP0024370A3 true EP0024370A3 (en) 1981-03-18

Family

ID=4281317

Family Applications (2)

Application Number Title Priority Date Filing Date
EP80200962A Withdrawn EP0024370A3 (en) 1979-05-21 1980-04-14 Smoke and temperature sensitive fire signalling device
EP80200327A Withdrawn EP0019310A1 (en) 1979-05-21 1980-04-14 Fire indicator with a temperature-sensitive element

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP80200327A Withdrawn EP0019310A1 (en) 1979-05-21 1980-04-14 Fire indicator with a temperature-sensitive element

Country Status (6)

Country Link
US (1) US4356478A (en)
EP (2) EP0024370A3 (en)
JP (1) JPS55154692A (en)
AU (1) AU5781380A (en)
CA (1) CA1173130A (en)
CH (1) CH638101A5 (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH656473A5 (en) * 1981-11-11 1986-06-30 Cerberus Ag Smoke detector
US4452537A (en) * 1981-11-30 1984-06-05 Rhythm Watch Co., Ltd. Alarm setting apparatus for timepieces
JPS58122189U (en) * 1982-02-09 1983-08-19 株式会社トーキン Temperature sensor for fire alarm
JPS58122188U (en) * 1982-02-09 1983-08-19 株式会社トーキン Temperature sensor for fire alarm
US4538201A (en) * 1983-05-02 1985-08-27 International Standard Electric Corporation Surge protector
GB8312831D0 (en) * 1983-05-10 1983-06-15 Leuven Res & Dev Vzw Temperature monitoring device
DE3400409A1 (en) * 1984-01-07 1985-07-18 Vdo Adolf Schindling Ag, 6000 Frankfurt TEMPERATURE SWITCH
US4800371A (en) * 1985-02-12 1989-01-24 Arsi Joseph N Freeze alarm
JPH0218906Y2 (en) * 1985-04-11 1990-05-25
DE58905587D1 (en) * 1988-03-30 1993-10-21 Cerberus Ag Early fire detection procedures.
US4823861A (en) * 1988-09-06 1989-04-25 The Babcock & Wilcox Company Fire detection device for regenerative air heater
US5059850A (en) * 1989-02-14 1991-10-22 Brother Kogyo Kabushiki Kaisha Temperature compensation member composed of shape memory effect alloy for an actuator driven by a piezo-electric element
FR2650670A1 (en) * 1989-08-02 1991-02-08 Fiori Costantino System for detecting a fire or any other phenomenon generating an abnormal rise or fall in temperature with respect to a fixed reference
US5134248A (en) * 1990-08-15 1992-07-28 Advanced Temperature Devices, Inc. Thin film flexible electrical connector
US6069551A (en) 1997-05-02 2000-05-30 Therm-O-Disc, Incorporated Thermal switch assembly
CA2233390A1 (en) * 1997-05-02 1998-11-02 William F. Quinn Thermal switch assembly
US5844464A (en) * 1997-11-24 1998-12-01 Therm-O-Disc, Incorporated Thermal switch
US6018286A (en) * 1998-11-20 2000-01-25 Therm-O-Disc, Incorporated Thermal switch
US6239686B1 (en) 1999-08-06 2001-05-29 Therm-O-Disc, Incorporated Temperature responsive switch with shape memory actuator
US6342826B1 (en) 1999-08-11 2002-01-29 Therm-O-Disc, Incorporated Pressure and temperature responsive switch assembly
DE10030394C1 (en) * 2000-06-21 2001-10-25 Siemens Ag Switching device using shape memory alloy actuator element acted on by deflection element providng force which partially counteracts its curvature
US20040201444A1 (en) * 2000-12-20 2004-10-14 Byong-Ho Park Shape memory alloy actuators activated by strain gradient variation during phase transformation
US6741158B2 (en) * 2002-07-18 2004-05-25 Honeywell International Inc. Magnetically sensed thermostat control
US20060273876A1 (en) * 2005-06-02 2006-12-07 Pachla Timothy E Over-temperature protection devices, applications and circuits
US8754740B2 (en) * 2009-05-20 2014-06-17 GM Global Technology Operations LLC Circuit implement utilizing active material actuation
US8319596B2 (en) * 2009-05-20 2012-11-27 GM Global Technology Operations LLC Active material circuit protector
US8830026B2 (en) * 2010-12-30 2014-09-09 General Electric Company Shape memory alloy actuated circuit breaker
CN104766432B (en) * 2015-03-19 2017-08-25 保定隶都电子科技有限公司 Smoke-temperature sensing fire detector
US10388480B2 (en) * 2016-08-18 2019-08-20 Eaton Intelligent Power Limited Dual element fuse and methods of manufacture
US10232202B1 (en) * 2016-09-07 2019-03-19 WilliamsRDM, Inc Self contained stovetop fire suppressor with alert signal and method
WO2018140457A1 (en) * 2017-01-24 2018-08-02 Hyslop William J Sprinkler head with sma spring
CN107084414A (en) * 2017-04-07 2017-08-22 中国航天建设集团有限公司 Range hood with active temperature sensitive switch

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516082A (en) * 1967-06-09 1970-06-02 Roy G Cooper Temperature sensing devices
US4027165A (en) * 1976-02-17 1977-05-31 The United States Of America As Represented By The United States Energy Research And Development Administration Ionization detection system for aerosols
FR2409559A1 (en) * 1977-11-21 1979-06-15 Cerberus Ag SMOKE DETECTOR

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2989738A (en) * 1956-07-11 1961-06-20 Pioneer Electric Brandon Ltd Transformer overload indicating system
US2886804A (en) * 1957-05-27 1959-05-12 Roy P Behrendt Alarm device
US3184727A (en) * 1962-09-10 1965-05-18 Miessner Inventions Inc Alarm system
CH616270A5 (en) * 1977-05-06 1980-03-14 Bbc Brown Boveri & Cie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516082A (en) * 1967-06-09 1970-06-02 Roy G Cooper Temperature sensing devices
US4027165A (en) * 1976-02-17 1977-05-31 The United States Of America As Represented By The United States Energy Research And Development Administration Ionization detection system for aerosols
FR2409559A1 (en) * 1977-11-21 1979-06-15 Cerberus Ag SMOKE DETECTOR

Also Published As

Publication number Publication date
CA1173130A (en) 1984-08-21
US4356478A (en) 1982-10-26
CH638101A5 (en) 1983-09-15
EP0019310A1 (en) 1980-11-26
AU5781380A (en) 1980-11-27
EP0024370A2 (en) 1981-03-04
JPS55154692A (en) 1980-12-02

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19810130

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Effective date: 19830326

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MUGGLI, JUERG

Inventor name: MUELLER, PATER