EP2940668A2 - Dispositif d'alarme - Google Patents

Dispositif d'alarme Download PDF

Info

Publication number
EP2940668A2
EP2940668A2 EP15165714.5A EP15165714A EP2940668A2 EP 2940668 A2 EP2940668 A2 EP 2940668A2 EP 15165714 A EP15165714 A EP 15165714A EP 2940668 A2 EP2940668 A2 EP 2940668A2
Authority
EP
European Patent Office
Prior art keywords
measuring chamber
housing portion
housing
cover
inlet opening
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Withdrawn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
EP15165714.5A
Other languages
German (de)
English (en)
Other versions
EP2940668A3 (fr
Inventor
Sven Krüger
Jörg Schmidt
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.)
DETECTOMAT GmbH
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 EP2940668A2 publication Critical patent/EP2940668A2/fr
Publication of EP2940668A3 publication Critical patent/EP2940668A3/fr
Withdrawn legal-status Critical Current

Links

Images

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 hazard detector, in particular a smoke detector.
  • Smoke detectors are usually mounted on ceilings and are used to detect smoke in case of fire. For this they have a measuring chamber with one or more inlet openings through which smoke can penetrate into the measuring chamber. In the measuring chamber, for example, an optical detection device is arranged, which detects the occurrence of smoke based on a changed scattering behavior for emitted by the optical detection device light. If a permitted smoke concentration in the measuring chamber is exceeded, an optical and / or acoustic alarm is triggered.
  • danger detectors often have an actuating device, by the actuation of which the proper function of the detection device can be tested. It is also known to switch off an example unwanted alarm by pressing the actuator.
  • Known hazard detectors can be supplied with electrical energy via a power connection integrated in the wall. This, however, a considerable installation effort is connected. Thus, a large number of hazard detectors usually have to be installed in buildings. It is therefore also known to equip hazard alarms with a battery as an electrical supply source. The installation effort is thereby reduced. However, a considerable maintenance effort is associated with this solution. So the batteries must be replaced regularly by staff on site.
  • a smoke detector in which the approximately a cylindrical volume forming measuring chamber is peripherally limited by arranged in two concentric ring rows baffles, wherein between adjacent baffles passage openings are formed for flue gas.
  • the flue gas thus enters the circumference of the measuring chamber.
  • all baffles are aligned obliquely to the respective radial direction, that the baffles of the outer row of rings are arranged almost perpendicular to the respectively associated baffles of the inner ring row.
  • the DE 36 083 393 A1 discloses a smoke detector with a measuring chamber formed within a housing.
  • the measuring chamber is delimited by a tubular first housing section and a lid-shaped second housing section spaced axially from the first housing section, wherein a circumferential inlet opening for flue gas is formed between the housing sections.
  • the present invention seeks to provide a danger detector, especially smoke detectors, which is characterized by a safe operation and in particular by a fast response even in those dangerous situations that are characterized by low air dynamics.
  • the invention is based on the finding that a generic hazard detector, as in the form of a smoke detector from the DE 36 083 393 A1 is known, may be characterized by a delayed response. This is due to the fact that the specific guidance of the flue gas, in this, before it enter the measuring chamber via the circumferential inlet opening can, on the outside is guided along the tubular housing portion along, can lead to a spiral flow, which thus also has a directed in the circumferential direction of the tubular housing part flow component. This formation of a spiral flow delays the entry of the flue gas into the measuring chamber, which can be problematic, in particular, in the case of smoldering fires which are characterized by only relatively weak air dynamics.
  • the invention is therefore based on the idea to avoid the emergence of a spiral flow in such a hazard detector by providing guide walls which are to direct the gas to be detected, in particular flue gas in the direction of the annular inlet opening as directly as possible.
  • a generic danger detector in particular a smoke detector, which has at least one (preferably multi-part) housing with (at least) a measuring chamber formed inside the housing, and (at least) a detection device for detecting a gas, in particular flue gas, located in the measuring chamber the measuring chamber is bounded by a tubular (preferably with (part) annular and in particular (partially) annular cross-sectional area housing portion and a lid-shaped housing portion and wherein the lid-shaped housing portion axially spaced with respect to a longitudinal axis of the measuring chamber to the is arranged tubular housing portion, so that between these a preferably completely circumferential inlet opening is formed by at least one, preferably a plurality of outside the measuring chamber arranged, to the inlet opening constructed baffles marked.
  • the longitudinal axis of the measuring chamber may preferably be that longitudinal axis in which optical axes of at least two optical detection elements of the detection device intersect.
  • the width of the circumferential inlet opening is preferably a maximum of 1.25 mm in order to prevent foreign bodies from entering the measuring chamber.
  • the baffle / baffles is formed radially relative to a longitudinal axis of the measuring chamber / are. It can thereby be achieved that a gas to be detected enters the measuring chamber as far as possible radially with respect to the longitudinal axis and consequently has substantially no flowdirection component directed in the circumferential direction.
  • the same purpose can serve a preferred embodiment of the danger detector according to the invention, in which a plurality of (in particular all) baffles are arranged distributed in a uniform pitch over the circumference of the tubular housing portion.
  • the baffle / baffles on an outer side of the tubular housing portion abuts / rest, whereby the formation of gaps between this outside and the / the baffle / baffles is possible prevented.
  • An overflow of gas to be detected between adjacent, each of two guide walls formed Leit furnace, which would counteract the present invention provided direct introduction of the gas to the inlet opening can thereby be prevented as possible.
  • a particularly simplifying the production and / or assembly embodiment of the danger detector may be characterized in that the baffle / baffles with the lid-shaped housing portion, but not with the tubular housing portion, is connected / are. Rather, it can be provided that the baffle / baffles brought during installation of the hazard alarm to the system on the outside of the tubular housing portion, but not directly connected to this / are.
  • the cover-shaped housing portion inside and / or outside of the measuring chamber one or more, at least the inlet opening and preferably also the tubular housing portion axially overlapping collar forms.
  • these collars can serve to prevent undesired penetration of ambient light, since the detection may impair the detection.
  • the danger detector shown in the drawings comprises a housing having a housing lower part 1, an upper housing part 2, a arranged between the lower housing part 1 and the upper housing part 2 functional unit 3 and a functional module 4, based on the functional unit 3, on the other side of the Housing base 1 formed partition 5 is arranged.
  • An underside of the lower housing part 1 or of the danger detector is provided for installation and attachment to a surface, in particular on a ceiling or wall of a room.
  • a bottom plate of the housing may be provided, which is detachably connectable to the lower housing part 1.
  • This makes it possible to attach the bottom plate initially independent of the lower housing part 1 to the surface, for example by screwing, and only then to connect the lower housing part 1 and the entire remainder of the danger detector with the bottom plate. This can be done for example via between the bottom plate and the lower housing part 1 formed latching connections and / or a bayonet connection.
  • the base plate may be formed such that it partially or completely closes the receiving space formed by the lower housing part 1 and accommodating the functional module 4.
  • the lower housing part 1 forms on the housing upper part 2 facing side of its partition 5 from a tubular housing portion 6, which limits a measuring chamber 7 circumferentially.
  • a bottom surface 8 of the measuring chamber is likewise formed by the dividing wall 5 of the housing lower part 1.
  • open receiving housing 9 In the tubular housing portion 6 two upwards, ie in the direction of the upper housing part 2, open receiving housing 9 are integrated, which serve to receive two at a defined angle to each other, optical detection elements 10 of a detection device.
  • the two detection elements 10, one of which comprises an optical radiation source and the other an optical radiation receiver, are aligned such that their optical axes intersect each other and a longitudinal axis 11 of the measuring chamber 7 at one point.
  • a partition wall 12 protruding into the measuring chamber 7 prevents a direct "visual contact" of the two detection elements 10.
  • control unit (not visible), a sounder 14, an actuator 15 and a connector 16 are fixed and electrically conductive to the circuit board 13 connected. All of these functional elements are arranged on the same surface of the printed circuit board 13.
  • the connector 16 serves to electrically connect the functional module 4 with the functional unit 3.
  • the functional module 4 a corresponding, also connected to a circuit board 17 connector 18 having a plurality of pin contacts, which are provided for engagement with corresponding socket contacts of the connector 16 of the functional unit 3.
  • the pin contacts pass through both the partition wall 5 of the housing base 1, which is provided for this purpose with an opening for all pin contacts, as well as the circuit board 13 of the functional unit 3, which is provided for this purpose with a corresponding number of individual openings.
  • the functional module 4 can, for example, have a radio transceiver unit (not visible), by means of which a radio-based networking of several danger detectors can be set up. This allows, for example, a detected by a hazard alarm, triggering an alarm triggering increased concentration of a gas to communicate the networked hazard, in which case an alarm and / or audible alarm is triggered by all the hazard detectors.
  • the upper housing part 2 forms a cover-shaped housing section 19, which limits the measuring chamber 7 at its upper axial end.
  • the cover-shaped housing portion 19 is spaced from the free end of the tubular Housing portion 6 of the lower housing part 1 is arranged (see. Fig. 2 ), whereby an at least partially encircling inlet opening 20 is formed, through which gas to be detected can flow into the measuring chamber 7.
  • lid-shaped housing portion 19 of the upper housing part 2 extend in the direction of the lower housing part 1 at least two circumferential, spaced in the radial direction of the tubular housing portion 6 collar 21, one of which is disposed on the inside and the other outside of the measuring chamber 7 and so far extend in the direction of the lower housing part 1 that they cover the inlet opening 20 and a piece and the tubular housing portion 6 in the axial direction.
  • the collars 21 serve to prevent penetration of ambient light via the inlet opening 20 into the measuring chamber 7 as much as possible by shielding them.
  • baffles 22 From the outer collar 7 extending with circumferentially substantially uniform pitch radially with respect to the longitudinal axis 11 of the measuring chamber 7 aligned baffles 22. These serve to direct a flow of gas to be detected in the most direct way to the inlet port 20 and thereby a spiral Flow to avoid the outside of the tubular housing portion 6 with a circumferentially directed flow component.
  • the free ends of the baffles 22 are provided for contact with the circuit board 13 of the functional unit 3, while the circuit board 13 of the functional unit in turn rests on the receiving housing 9 formed by the lower housing part 1. As a result, the printed circuit board 13 is held between the lower housing part 1 and the upper housing part 2.
  • the free ends of the baffles 22 are fixed via part-ring-shaped stabilizing elements 23. As a result, these are protected against damage due to deformation, in particular during installation of the hazard alarm. Furthermore, it is provided that the radially inner edges of the Baffle 22 in the mounted state of the hazard alarm on the outside of the tubular housing portion 6 abut.
  • the measuring chamber 7 bounding surfaces of the lower housing part 1 and the upper housing part 2 are provided with a tooth-shaped contour. This serves to scatter the light emitted by the optical radiation source of the corresponding detection element 10 in order to prevent direct reflection on the optical radiation receiver of the other detection element 10.
  • very small pressure equalization openings 24 are integrated, which connect the measuring chamber 7 with the function module 4 receiving receiving space of the housing in a fluid-conducting manner.
  • the pressure compensation openings 24 define an (oval) ring which surrounds the longitudinal axis 11 of the measuring chamber 7.
  • the pressure compensation openings 24 prevent the formation of an overpressure by gas flowing into the measuring chamber 7, for example flue gas, in that gas, in particular air, contained in the measuring chamber can be removed. This has a positive effect on the velocity of the inflow of gas to be detected into the measuring chamber 7 and thus on the detection speed of the danger detector per se.
  • the upper housing part 2 also still forms two cover sections 25, by which the receiving housings 9 with the detection elements 10 received therein are closed in the mounted state of the danger detector. An intrusion of ambient light into the measuring chamber 7 via the receiving housing 9 is thereby prevented as possible.
  • the functional elements of the hazard alarm are supplied by means of a battery 26 with the required electrical energy for operation.
  • the battery 26 is arranged in a battery compartment, which for the most part within the well Function module 4 receiving receiving space of the housing is arranged.
  • the battery compartment is bounded at the top by a section of the circuit board 13 of the functional unit 3, downwardly from the bottom plate and laterally by the insides of a through opening 27 formed in the partition wall 5 of the lower housing part 1, and the battery 26 thus securely held within the danger detector.
  • An electrically conductive connection between the poles of the battery 26 and corresponding contact points 28 of the circuit board 13 of the functional unit 3 is realized by means of contact elements 29.
  • Each of the contact elements 29 comprises two contact tabs 30, wherein the contact tabs 30 extend in the direction of the printed circuit board 13 and each contact one of the contact points 28 on the printed circuit board 13 with their end sections (cf. Fig. 4 ).
  • the contact tabs 30 are at least slightly deformed elastically in the assembled state of the hazard alarm, whereby a sufficiently large contact pressure is provided.
  • the contact elements 29 and the printed conductors of the circuit boards 13, 17 are executed gold-plated.
  • the functional unit 3 which, with the exception of the battery 26, integrates all functional elements necessary for the basic operation of the hazard alarm, is placed on the corresponding side on the lower housing part 1, to which the contact elements 29 for the battery 26 have already been attached.
  • the non-rotationally symmetrical shape of the outer side of the tubular housing section 6 and the corresponding section of the printed circuit board 13 of the functional unit 3 ensure that this placement is possible only in one orientation of the functional unit 3.
  • the upper housing part 2 is placed on the lower housing part 1 and the functional unit 3.
  • a trained by the lower housing part 1 Fixing web 31 by a corresponding passage opening 32 in the circuit board 13 of the functional unit 3 and in a corresponding mounting opening 33 of the upper housing part 2.
  • the housing lower part 1, the functional unit 3 and the upper housing part 2 By welding the formed between the fixing web 31 and the wall of the mounting hole 33 contact surfaces, for example by means of ultrasound, the housing lower part 1, the functional unit 3 and the upper housing part 2 permanently and not (non-destructive) detachably connected to each other.
  • the danger detector depending on the intended use, can still be equipped with the functional module 4 and thus further preassembled.
  • the functional module 4 integrates those functional elements which, such as the radio transceiver unit, may optionally be present, but need not be present for the basic operation of the hazard alarm.
  • the loading of the hazard detector with the function module 4 can be done by simply inserting into the formed by the lower housing part 1 receiving space with simultaneous connection of the connector 16, 18.
  • the thus possibly adapted to the intended use hazard alarm can then be fitted with the battery 26 and connected to the intended use position with a bolted to a floor or wall surface base plate.
  • a functional test can be carried out and / or a network of a plurality of corresponding danger detectors can be made.
  • an unillustrated housing cover can still be placed and secured via a bayonet connection.
  • the lower housing part 1 forms closure tabs 34 for this purpose.
  • the housing cover surrounds the housing upper part 2 and the functional unit 3 and thus protects them from damage due to external trauma. Through holes in At the same time, the housing cover ensures that gas to be detected can flow into the measuring chamber 7.
EP15165714.5A 2014-04-30 2015-04-29 Dispositif d'alarme Withdrawn EP2940668A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014106124.1A DE102014106124A1 (de) 2014-04-30 2014-04-30 Gefahrenmelder

Publications (2)

Publication Number Publication Date
EP2940668A2 true EP2940668A2 (fr) 2015-11-04
EP2940668A3 EP2940668A3 (fr) 2015-11-18

Family

ID=53015666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15165714.5A Withdrawn EP2940668A3 (fr) 2014-04-30 2015-04-29 Dispositif d'alarme

Country Status (2)

Country Link
EP (1) EP2940668A3 (fr)
DE (1) DE102014106124A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110533870A (zh) * 2019-07-05 2019-12-03 国网浙江省电力有限公司嘉兴供电公司 一种基于物联网的火情探测报警装置
US11430313B2 (en) 2018-05-31 2022-08-30 Autronica Fire & Security As Printed circuit board for smoke detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015114060B4 (de) 2015-08-25 2020-01-16 Albrecht Jung Gmbh & Co. Kg Elektrisches Gerät

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608393A1 (de) 1986-03-13 1987-09-17 Preussag Ag Feuerschutz Optischer rauchmelder
WO2001050432A1 (fr) 1999-12-31 2001-07-12 Digital Security Controls, Ltd. Detecteur photoelectrique de fumee et chambre correspondante

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6521907B1 (en) * 1999-04-29 2003-02-18 Pittway Corporation Miniature photoelectric sensing chamber
JP3370032B2 (ja) * 1999-11-01 2003-01-27 ホーチキ株式会社 光電式煙感知器及び検煙部アッセンブリィ
EP2395489B1 (fr) * 2010-06-09 2013-04-24 Dietmar Friedrich Brück Dispositif de détection de fumée
US9046414B2 (en) * 2012-09-21 2015-06-02 Google Inc. Selectable lens button for a hazard detector and method therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608393A1 (de) 1986-03-13 1987-09-17 Preussag Ag Feuerschutz Optischer rauchmelder
WO2001050432A1 (fr) 1999-12-31 2001-07-12 Digital Security Controls, Ltd. Detecteur photoelectrique de fumee et chambre correspondante

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11430313B2 (en) 2018-05-31 2022-08-30 Autronica Fire & Security As Printed circuit board for smoke detector
CN110533870A (zh) * 2019-07-05 2019-12-03 国网浙江省电力有限公司嘉兴供电公司 一种基于物联网的火情探测报警装置

Also Published As

Publication number Publication date
DE102014106124A1 (de) 2015-11-05
EP2940668A3 (fr) 2015-11-18

Similar Documents

Publication Publication Date Title
DE3840162C2 (fr)
EP2694860B1 (fr) Système de sécurité comportant des détecteurs de fumée et des moyens de signalisation
EP2940668A2 (fr) Dispositif d'alarme
DE102016224469A1 (de) Elektronische Steuereinheit
DE102015223596A1 (de) Druckausgleichsvorrichtung und elektronisches Steuermodul mit der Druckausgleichsvorrichtung.
EP3380814A1 (fr) Boîtier protégé contre les explosions pour moyens d'émission et de réception de rayonnement électromagnétique
EP3021435B1 (fr) Dispositif d'aération
AT17840U1 (de) Brand- oder Rauchmelder
DE60100756T2 (de) Feuermelder
EP2940665A2 (fr) Dispositif d'alarme
DE112013002429T5 (de) Gas Sensor
DE102013003509A1 (de) Strahlregler mit einem Einbaugehäuse und einem darin einsetzbaren Strahlzerleger
EP2940667A2 (fr) Dispositif d'alarme
EP2730316B1 (fr) Dispositif de détection optique pour la détection d'un incendie
DE102010031139B4 (de) Brandmeldervorrichtung
EP2456291B1 (fr) Ventilateur de toit et ventilation de toit
EP1258848A2 (fr) Détecteur optique de fumée
EP2119479B1 (fr) Dispositif coupe-feu
EP3985633B1 (fr) Unité de capteur, appareil d'avertissement de fuite de gaz, dispositif d'avertissement de fuite de gaz, procédé de mise en uvre d'une opération d'entretien sur l'appareil d'avertissement de fuite de gaz et procédé de mise en uvre d'une mesure de gaz pourvu à l'aide du dispositif d'avertissement de fuite de gaz
DE202013001994U1 (de) Strahlregler mit einem Einbaugehäuse und einem darin einsetzbaren Strahlzerleger
DE102018106253B3 (de) Leuchtenbaldachin zum Detektieren und Signalisieren von Gefahrensituationen
EP3020031B1 (fr) Système de protection
EP2395489A2 (fr) Dispositif de détection de fumée
DE102014222561A1 (de) Gassensor
DE102018203629B3 (de) Ventilatoreinsatz zur Anordnung in einem Montagegehäuse, Ventilatoranordnung sowie Verfahren zum Montieren einer Ventilatoranordnung

Legal Events

Date Code Title Description
PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: G08B 17/103 20060101AFI20151013BHEP

Ipc: G08B 17/107 20060101ALI20151013BHEP

17P Request for examination filed

Effective date: 20160513

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DETECTOMAT GMBH

17Q First examination report despatched

Effective date: 20180316

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20201103