EP0616305A1 - Fire detector - Google Patents

Fire detector Download PDF

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Publication number
EP0616305A1
EP0616305A1 EP94103565A EP94103565A EP0616305A1 EP 0616305 A1 EP0616305 A1 EP 0616305A1 EP 94103565 A EP94103565 A EP 94103565A EP 94103565 A EP94103565 A EP 94103565A EP 0616305 A1 EP0616305 A1 EP 0616305A1
Authority
EP
European Patent Office
Prior art keywords
detector
insert
detector insert
fire
holder
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
EP94103565A
Other languages
German (de)
French (fr)
Other versions
EP0616305B1 (en
Inventor
Bernhard Durrer
Hans Boetschi
Peter Gruber
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.)
Siemens 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 EP0616305A1 publication Critical patent/EP0616305A1/en
Application granted granted Critical
Publication of EP0616305B1 publication Critical patent/EP0616305B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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 fire detector according to the preamble of patent claim 1.
  • Fire detectors of this type are generally known. They serve to protect human life and property in fire alarm systems for the early detection of fires. Such fire alarm systems generally consist of a signaling center and fire detectors distributed in the objects to be protected.
  • the fire detectors contain fire-specific sensors, electronic amplifiers and devices for the transmission of information to the signaling center.
  • the design of a fire detector usually consists of the actual fire detector (detector insert), which contains the sensors and electronics, and a detector base (socket), which is permanently installed in the room to be monitored and in which the detector insert is used. In this way it is possible to remove the detector inserts for revision and reinsert them.
  • the last requirement is raised in particular because the detectors are often installed in places where the aesthetics of the design play a role. These include theaters, museums and historical buildings.
  • German utility model DE-U1-92'10'858 proposed to design the detector insert so that it fully covers the socket when in use. This has the additional advantage that changes in the color of the frame due to aging do not adversely affect the appearance of the detector if, for example, the detector insert is replaced after some time.
  • a disadvantage of such a construction is the fact that it is difficult for all detectors in which the detector insert completely covers the detector socket to see whether the insert is correctly seated in the holder. However, this is an essential prerequisite for all fire detectors that consist of a socket and insert. Incorrectly used detector inserts are a priori sources of error and malfunction and often give rise to complaints today.
  • the aim of the present invention is to remedy the disadvantages of the fire detectors of the prior art and, in particular, to provide a fire detector of the type mentioned at the outset which has a closure device which is attached to the detector insert and which both mechanically locks the detector insert and clearly detects it correct end position of the detector insert, even from a distance of a few meters. This considerably simplifies control and reduces the effort involved to a minimum.
  • Figure 1 shows a fire detector with a socket 1 and a detector insert 2, which consists of a movable ring 3 and a lower part 4.
  • the ring 3 is freely movable within a certain angular range relative to the lower part 4 of the detector insert 2.
  • the detector insert 2 is locked by a locking device with the socket 1.
  • On the outside of the ring 3 is a first marking element 5 and on the outside of the lower part 4 of the detector insert 2, a second marking element 6 is arranged such that in the open, unlocked state of the fire detector, the first marking element 5 is clearly shifted from the second marking element 6 by a certain angle is.
  • the locking device consists of three guide cams 7 and a locking cam 8, which are arranged on the inside of the ring 3. Furthermore, the socket 1 has three guide links 9 belonging to the guide cams 7 and a holding cam 10 belonging to the locking cam 8.
  • the detector insert 2 is first brought into a joining position with respect to the holder 1, which is shown in FIG.
  • the three guide cams 7 are inserted into the guide link 9 associated with them.
  • the locking device is actuated by rotating the ring 3 through a certain angle and moving the guide cams along the guide links.
  • the locking is completed by bringing the locking cam 8 over the holding cam 10. In this position, as shown in FIGS. 3 and 4, the first marking element 5 and the second marking element 6 lie in a straight line. Complete and correct locking is clearly visible from a distance of several meters using these marking elements.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

In a fire detector which consists of a detector insert (2) and a holder (1), in which the detector insert (2) in the inserted state completely covers the holder (1), the detector insert (2) has a movable closure device, preferably consisting of a ring (3), by means of which the detector insert (2) can be mechanically locked relative to the holder (1). Marking elements (5, 6) are provided on the detector insert (2), which elements permit the correct end position of the detector insert (2) relative to the holder (1) to be monitored. <IMAGE>

Description

Die Erfindung betrifft einen Brandmelder gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a fire detector according to the preamble of patent claim 1.

Brandmelder dieser Art sind allgemein bekannt. Sie dienen zum Schutze von Menschenleben und Sachwerten in Brandmeldeanlagen zur Früherkennung von Bränden. Solche Brandmeldeanlagen bestehen im allgemeinen aus einer Signalzentrale und in den zu schützenden Objekten verteilt angeordneten Brandmeldern.Fire detectors of this type are generally known. They serve to protect human life and property in fire alarm systems for the early detection of fires. Such fire alarm systems generally consist of a signaling center and fire detectors distributed in the objects to be protected.

Die Brandmelder enthalten brandspezifische Sensoren, elektronische Verstärker und Einrichtungen zur Uebertragung von Informationen zur Signalzentrale. Konstruktiv besteht ein Brandmelder in der Regel aus dem eigentlichen Brandmelder (Meldereinsatz), welcher die Sensoren und die Elektronik enthält und einem Meldersockel (Fassung), welcher in dem zu überwachenden Raum fest montiert ist und in den der Meldereinsatz eingesetzt wird. Auf diese Weise ist es möglich die Meldereinsätze zur Revision zu entfernen und wieder einzusetzen.The fire detectors contain fire-specific sensors, electronic amplifiers and devices for the transmission of information to the signaling center. The design of a fire detector usually consists of the actual fire detector (detector insert), which contains the sensors and electronics, and a detector base (socket), which is permanently installed in the room to be monitored and in which the detector insert is used. In this way it is possible to remove the detector inserts for revision and reinsert them.

In Anbetracht der hohen Anforderungen, die an die Zuverlässigkeit von Brandmeldanlagen gestellt werden, ist es dringend erforderlich, Schwachstellen in solchen Anlagen nach Möglichkeit zu eliminieren. Eine solche Schwachstelle ist zweifellos die Verbindung Meldereinsatz/Fassung, da von ihr in hohem Maße die Funktionstüchtigkeit der gesamten Brandmeldeanlage abhängt. Daher ist es verständlich, daß sich die Hersteller solcher Anlagen bemühen, die Zuverlässigkeit der Verbindung Meldereinsatz/Fassung durch gute konstruktive Lösungen sicherzustellen.In view of the high demands placed on the reliability of fire alarm systems, it is imperative to eliminate weak points in such systems if possible. One such weak point is undoubtedly the connection between the detector insert and the socket, since it largely depends on the functionality of the entire fire alarm system. It is therefore understandable that the manufacturers of such systems strive to ensure the reliability of the detector insert / socket connection by means of good design solutions.

An die Verbindung Meldereinsatz/Fassung werden u.a. folgende Anforderungen gestellt:

  • Zuverlässiger elektrischer Kontakt
  • Schutz der Kontakte gegen Verschmutzung und Korrosion
  • sichere mechanische Befestigung
  • gutes äußeres Design (Aussehen)
The following requirements are made of the connection between detector insert and socket:
  • Reliable electrical contact
  • Protection of contacts against dirt and corrosion
  • secure mechanical fastening
  • good external design (appearance)

Die letzte Forderung wird insbesondere deshalb erhoben, weil die Melder oft an Orten installiert werden, wo die Ästhetik des Designs eine Rolle spielt. Hierzu gehören Theater, Museen und historische Bauten.The last requirement is raised in particular because the detectors are often installed in places where the aesthetics of the design play a role. These include theaters, museums and historical buildings.

Um ein formschönes Design mit einem guten Schutz gegen Verschmutzung der Kontakte zu kombinieren, wurde u.a. im deutschen Gebrauchsmuster DE-U1-92'10'858 vorgeschlagen, den Meldereinsatz so zu gestalten, daß er im eingesetzten Zustand die Fassung voll abdeckt. Dies hat zusätzlich noch den Vorteil, daß sich Farbänderungen der Fassung durch Alterung nicht nachteilig auf das Aussehen des Melders auswirken, wenn beispielsweise nach einiger Zeit der Meldereinsatz ersetzt wird.To combine an elegant design with good protection against dirt on the contacts, i.a. in German utility model DE-U1-92'10'858 proposed to design the detector insert so that it fully covers the socket when in use. This has the additional advantage that changes in the color of the frame due to aging do not adversely affect the appearance of the detector if, for example, the detector insert is replaced after some time.

Als Nachteil einer solchen Konstruktion muß der Umstand betrachtet werden, daß es bei allen Meldern, bei denen der Meldereinsatz die Melderfassung vollständig abdeckt, schwierig ist zu erkennen, ob der Einsatz richtig in der Fassung sitzt. Dies ist jedoch für alle Brandmelder, die aus Fassung und Einsatz bestehen, eine unabdingbare Voraussetzung. Nicht korrekt eingesetzte Meldereinsätze sind a priori Fehler- und Störungsquellen und geben heute häufig zu Reklamationen Anlaß.A disadvantage of such a construction is the fact that it is difficult for all detectors in which the detector insert completely covers the detector socket to see whether the insert is correctly seated in the holder. However, this is an essential prerequisite for all fire detectors that consist of a socket and insert. Incorrectly used detector inserts are a priori sources of error and malfunction and often give rise to complaints today.

Diesem Problem wurde in der Vergangenheit eindeutig nicht genug Rechnung getragen. Eine Kontrolle der richtigen Position des Meldereinsatzes nach erfolgtem Einsetzen durch geschultes Fachpersonal wurde erst später als unumgänglich erkannt. Der hiermit verbundene erhöhte Aufwand muß im Interesse der Funktionstüchtigkeit des Gesamtsystems in Kauf genommen werden, selbst wenn hierdurch die Installationskosten erhöht werden.This problem has clearly not been addressed enough in the past. A check of the correct position of the detector insert after it has been inserted by trained specialist personnel was only later recognized as unavoidable. The associated increased effort must be accepted in the interest of the functionality of the overall system, even if this increases the installation costs.

Ziel der vorliegenden Erfindung ist es, die Nachteile der Brandmelder des Standes der Technik zu beheben und insbesondere einen Brandmelder der eingangs erwähnten Art zu schaffen, der eine am Meldereinsatz angebrachte Verschlußvorrichtung aufweist, welche sowohl die mechanische Arretierung des Meldereinsatzes bewirkt als auch ein klares Erkennen der richtigen Endposition des Meldereinsatzes, auch aus einer Entfernung von einigen Metern, erlaubt. Hierdurch wird die Kontrolle wesentlich erleichtert und der damit verbundene Aufwand auf ein Minimum reduziert.The aim of the present invention is to remedy the disadvantages of the fire detectors of the prior art and, in particular, to provide a fire detector of the type mentioned at the outset which has a closure device which is attached to the detector insert and which both mechanically locks the detector insert and clearly detects it correct end position of the detector insert, even from a distance of a few meters. This considerably simplifies control and reduces the effort involved to a minimum.

Diese Aufgabe wird bei einem Brandmelder der eingangs genannten Art durch die kennzeichenden Merkmale des Patentanspruchs 1 gelöst. Bevorzugte Ausführungsformen und Ausgestaltungen der Erfindung sind in den abhängigen Patentansprüchen definiert.This object is achieved in a fire detector of the type mentioned by the characterizing features of claim 1. Preferred embodiments and refinements of the invention are defined in the dependent claims.

Im folgenden wird die Erfindung an Hand der in den Figuren dargestellten bevorzugten Ausführungsform näher erläutert. Es zeigen

Figur 1
eine Seitenansicht eines erfindungsgemäßen Brandmelders mit einer Verschlußvorrichtung in offenem Zustand,
Figur 2
einen Querschnitt durch einen Brandmelder gemäß Figur 1, entlang der Linie A...A,
Figur 3
eine Seitenansicht eines Brandmelders gemäß Figur 1 mit geschlossener Verschlußvorrichtung,
Figur 4
einen Querschnitt durch einen Brandmelder gemäß Figur 3 entlang der Linie B...B.
In the following, the invention will be described with reference to the figures preferred embodiment explained in more detail. Show it
Figure 1
a side view of a fire detector according to the invention with a closure device in the open state,
Figure 2
2 shows a cross section through a fire detector according to FIG. 1, along the line A ... A,
Figure 3
2 shows a side view of a fire detector according to FIG. 1 with the closure device closed,
Figure 4
a cross section through a fire detector according to Figure 3 along the line B ... B.

Figur 1 zeigt einen Brandmelder mit einer Fassung 1 und einem Meldereinsatz 2, welcher aus einem beweglichen Ring 3 und einem Unterteil 4 besteht. Der Ring 3 ist innerhalb eines bestimmten Winkelbereichs gegenüber dem Unterteil 4 des Meldereinsatzes 2 frei beweglich. Der Meldereinsatz 2 wird durch eine Verschlußvorrichtung mit der Fassung 1 verriegelt. An der Außenseite des Rings 3 ist ein erstes Markierungselement 5 und an der Außenseite des Unterteils 4 des Meldereinsatzes 2 ist ein zweites Markierungselement 6 so angeordnet, daß im offenen unverriegelten Zustand des Brandmelders das erste Markierungselement 5 vom zweiten Markierungselement 6 um einen bestimmten Winkel klar verschoben ist.Figure 1 shows a fire detector with a socket 1 and a detector insert 2, which consists of a movable ring 3 and a lower part 4. The ring 3 is freely movable within a certain angular range relative to the lower part 4 of the detector insert 2. The detector insert 2 is locked by a locking device with the socket 1. On the outside of the ring 3 is a first marking element 5 and on the outside of the lower part 4 of the detector insert 2, a second marking element 6 is arranged such that in the open, unlocked state of the fire detector, the first marking element 5 is clearly shifted from the second marking element 6 by a certain angle is.

Die Verriegelungsvorrichtung besteht aus drei Führungsnocken 7 und einem Arretierungsnocken 8, welche an der Innenseite des Rings 3 angeordnet sind. Ferner weist die Fassung 1 drei den Führungsnocken 7 zugehörigen Führungskulissen 9 sowie einen dem Arretierungsnocken 8 zugehörigen Haltenocken 10 auf. Um den Meldereinsatz 2 durch die Verschlußvorrichtung mit der Fassung 1 zu verriegeln, wird zunächst der Meldereinsatz 2 bezüglich der Fassung 1 in eine Fügestellung gebracht, welche in Figur 2 dargestellt ist. Hierzu werden die drei Führungsnocken 7 in die ihnen zugehörigen Führungskulissen 9 eingefügt. Die Verschlußvorrichtung wird betätigt, indem der Ring 3 um einen bestimmten Winkel gedreht wird und die Führungsnocken entlang den Führungskulissen sich bewegen. Die Verriegelung wird vervollständigt, indem der Arretierungsnocken 8 über den Haltenocken 10 gebracht wird. In dieser Position, wie in Figur 3 und 4 dargestellt, liegen das erste Markierungselement 5 und das zweite Markierungselement 6 in einer geraden Linie. Eine vollständige und korrekte Verriegelung ist mittels dieser Markierungselemente aus einer Entfernung von mehreren Metern gut sichtbar.The locking device consists of three guide cams 7 and a locking cam 8, which are arranged on the inside of the ring 3. Furthermore, the socket 1 has three guide links 9 belonging to the guide cams 7 and a holding cam 10 belonging to the locking cam 8. In order to lock the detector insert 2 by means of the closure device with the holder 1, the detector insert 2 is first brought into a joining position with respect to the holder 1, which is shown in FIG. For this purpose, the three guide cams 7 are inserted into the guide link 9 associated with them. The locking device is actuated by rotating the ring 3 through a certain angle and moving the guide cams along the guide links. The locking is completed by bringing the locking cam 8 over the holding cam 10. In this position, as shown in FIGS. 3 and 4, the first marking element 5 and the second marking element 6 lie in a straight line. Complete and correct locking is clearly visible from a distance of several meters using these marking elements.

Abwandlungen der vorbeschriebenen Brandmelderkonstruktion sind im Rahmen der Erfindung gemäß den Ansprüchen möglich und dem Fachmann geläufig.Modifications to the fire detector construction described above are possible within the scope of the invention according to the claims and are familiar to the person skilled in the art.

Claims (8)

Brandmelder bestehend aus einem Meldereinsatz (2) und einer Fassung (1), in die der Meldereinsatz (2) eingesetzt werden kann und bei dem im eingesetzten Zustand der Meldereinsatz (2) die Fassung (1) völlig abdeckt, dadurch gekennzeichnet, daß der Meldereinsatz (2) eine bewegliche Verschlußvorrichtung (3) aufweist, mit welcher der Meldereinsatz (2) gegenüber der Fassung (1) mechanisch arretiert wird und welche ein erstes Markierungselement (5) enthält, das in der Endposition des Meldereinsatzes (2) gegenüber einem zweiten am Unterteil (4) des Meldereinsatzes (2) angebrachten Markierungselement (6) in eine eindeutige Position gebracht wird, wodurch die korrekte Endposition des Meldereinsatzes (2) gegenüber der Fassung (1) von außen erkennbar ist.Fire detector consisting of a detector insert (2) and a holder (1) into which the detector insert (2) can be inserted and in which the detector insert (2) completely covers the holder (1), characterized in that the detector insert (2) has a movable locking device (3) with which the detector insert (2) is mechanically locked relative to the holder (1) and which contains a first marking element (5) which, in the end position of the detector insert (2), relative to a second one Lower part (4) of the detector insert (2) attached marking element (6) is brought into a clear position, whereby the correct end position of the detector insert (2) relative to the holder (1) can be seen from the outside. Brandmelder gemäß Patentanspruch 1, dadurch gekennzeichnet, daß die Verschlußvorrichtung aus einem Ring (3) besteht, der am oberen Ende des Meldereinsatzes (2) angebracht ist.Fire detector according to claim 1, characterized in that the closure device consists of a ring (3) which is attached to the upper end of the detector insert (2). Brandmelder gemäß einem der Patentansprüche 1 oder 2, dadurch gekennzeichnet, daß die Markierungselemente (5, 6) aus Formgebungselementen bestehen, welche zwecks Erkennung der Endposition des Meldereinsatzes (2) nebeneinander oder übereinander positioniert werden.Fire detector according to one of the claims 1 or 2, characterized in that the marking elements (5, 6) consist of shaping elements which are positioned next to one another or one above the other for the purpose of detecting the end position of the detector insert (2). Brandmelder gemäß Patentanspruch 3, dadurch gekennzeichnet, daß die Formgebungselemente (5, 6) aus vorstehenden Rippen bestehen.Fire detector according to claim 3, characterized in that the shaping elements (5, 6) consist of projecting ribs. Brandmelder gemäß einem der Patentansprüche 1 bis 4, dadurch gekennzeichnet, daß die Markierungselemente (5, 6) sich farblich vom Meldereinsatz unterscheiden.Fire detector according to one of the claims 1 to 4, characterized in that the marking elements (5, 6) differ in color from the detector insert. Brandmelder gemäß einem der Patentansprüche 1 bis 5, dadurch gekennzeichnet, daß die Verschlußvorrichtung (3) Mittel aufweist, die so angeordnet und konstruiert sind, daß sie einen elektrischen Kontakt betätigen können, der bei Erreichung der Endposition des Meldereinsatzes (2) ein Signal erzeugt.Fire detector according to one of Claims 1 to 5, characterized in that the closure device (3) has means which are arranged and constructed in such a way that they can actuate an electrical contact which generates a signal when the end position of the detector insert (2) is reached. Brandmelder gemäß Patentanspruch 6, dadurch gekennzeichnet, daß weitere Mittel vorgesehen sind, die so eingerichtet sind, daß das Signal zur Zentrale übertragen wird.Fire detector according to claim 6, characterized in that further means are provided which are set up so that the signal is transmitted to the control center. Brandmelder gemäß einem der Patentansprüche 5 bis 7, dadurch gekennzeichnet, daß weitere Mittel vorgesehen sind, die so eingerichtet sind, daß durch den elektrischen Kontakt am Meldereinsatz (2) ein optisches Signal erzeugt wird.Fire detector according to one of Claims 5 to 7, characterized in that further means are provided which are set up in such a way that an optical signal is generated by the electrical contact on the detector insert (2).
EP94103565A 1993-03-19 1994-03-09 Fire detector Expired - Lifetime EP0616305B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH846/93 1993-03-19
CH846/93A CH685409A5 (en) 1993-03-19 1993-03-19 Fire alarm.

Publications (2)

Publication Number Publication Date
EP0616305A1 true EP0616305A1 (en) 1994-09-21
EP0616305B1 EP0616305B1 (en) 1998-05-06

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EP94103565A Expired - Lifetime EP0616305B1 (en) 1993-03-19 1994-03-09 Fire detector

Country Status (14)

Country Link
EP (1) EP0616305B1 (en)
JP (1) JPH06348975A (en)
CN (1) CN1085364C (en)
AT (1) ATE165929T1 (en)
AU (1) AU673033B2 (en)
CA (1) CA2117212A1 (en)
CH (1) CH685409A5 (en)
CZ (1) CZ283842B6 (en)
DE (1) DE59405877D1 (en)
ES (1) ES2118994T3 (en)
FI (1) FI111667B (en)
HK (1) HK1009066A1 (en)
NO (1) NO307067B1 (en)
SG (1) SG45276A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997005586A1 (en) * 1995-07-27 1997-02-13 Thorn Security Limited Fire detector positioning
EP1282092A2 (en) * 2001-07-23 2003-02-05 Luxmate Controls GmbH Mounting adapter for volumetric sensor
DE102015004458A1 (en) 2014-06-26 2015-12-31 Elmos Semiconductor Aktiengesellschaft Apparatus and method for a classifying, smokeless air condition sensor
DE102014019172A1 (en) 2014-12-17 2016-06-23 Elmos Semiconductor Aktiengesellschaft Apparatus and method for distinguishing solid objects, cooking fumes and smoke with a compensating optical measuring system
DE102014019773A1 (en) 2014-12-17 2016-06-23 Elmos Semiconductor Aktiengesellschaft Apparatus and method for distinguishing solid objects, cooking fumes and smoke by means of the display of a mobile telephone

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
DE59905313D1 (en) * 1998-09-09 2003-06-05 Siemens Building Tech Ag FIRE DETECTORS AND FIRE DETECTING SYSTEM
US7492273B2 (en) 2003-03-10 2009-02-17 Walter Kidde Portable Equipment, Inc. Pivoting battery carrier and a life safety device incorporating the same
JP5854585B2 (en) * 2010-03-05 2016-02-09 新コスモス電機株式会社 smoke detector
DE202012008716U1 (en) 2012-09-12 2012-10-24 Lukas Fiedler Smoke detector with transmitter unit, which interrupts the circuit of the device connected to a radio-controlled socket in the event of an alarm triggered by radio.
CN113269943A (en) * 2021-04-02 2021-08-17 杭州中伦信号技术有限公司 Smoke-sensing type fire detection alarm device

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DE2452553A1 (en) * 1974-11-06 1976-08-26 Sven Laarm Mounting device for ceiling or wall fittings - has V-shaped radial cross-section of helix with radially extending corrugations
EP0014251A1 (en) * 1979-01-23 1980-08-20 Cerberus Ag Coupling device for fire-alarm

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US5055830A (en) * 1989-06-12 1991-10-08 Pittway Corporation Battery sensing mechanism

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Publication number Priority date Publication date Assignee Title
DE2452553A1 (en) * 1974-11-06 1976-08-26 Sven Laarm Mounting device for ceiling or wall fittings - has V-shaped radial cross-section of helix with radially extending corrugations
EP0014251A1 (en) * 1979-01-23 1980-08-20 Cerberus Ag Coupling device for fire-alarm

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997005586A1 (en) * 1995-07-27 1997-02-13 Thorn Security Limited Fire detector positioning
EP1282092A2 (en) * 2001-07-23 2003-02-05 Luxmate Controls GmbH Mounting adapter for volumetric sensor
EP1282092A3 (en) * 2001-07-23 2003-05-28 Luxmate Controls GmbH Mounting adapter for volumetric sensor
DE102015004458A1 (en) 2014-06-26 2015-12-31 Elmos Semiconductor Aktiengesellschaft Apparatus and method for a classifying, smokeless air condition sensor
DE102014019172A1 (en) 2014-12-17 2016-06-23 Elmos Semiconductor Aktiengesellschaft Apparatus and method for distinguishing solid objects, cooking fumes and smoke with a compensating optical measuring system
DE102014019773A1 (en) 2014-12-17 2016-06-23 Elmos Semiconductor Aktiengesellschaft Apparatus and method for distinguishing solid objects, cooking fumes and smoke by means of the display of a mobile telephone

Also Published As

Publication number Publication date
FI941249A (en) 1994-09-20
CA2117212A1 (en) 1994-09-20
CZ283842B6 (en) 1998-06-17
CZ61794A3 (en) 1994-10-19
SG45276A1 (en) 1998-01-16
FI941249A0 (en) 1994-03-16
ATE165929T1 (en) 1998-05-15
AU673033B2 (en) 1996-10-24
AU5505694A (en) 1994-09-22
HK1009066A1 (en) 1999-05-21
EP0616305B1 (en) 1998-05-06
ES2118994T3 (en) 1998-10-01
FI111667B (en) 2003-08-29
NO940986D0 (en) 1994-03-18
NO940986L (en) 1994-09-20
CH685409A5 (en) 1995-06-30
NO307067B1 (en) 2000-01-31
DE59405877D1 (en) 1998-06-10
CN1085364C (en) 2002-05-22
JPH06348975A (en) 1994-12-22
CN1099891A (en) 1995-03-08

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