EP2940667A2 - Dispositif d'alarme - Google Patents

Dispositif d'alarme Download PDF

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Publication number
EP2940667A2
EP2940667A2 EP15165713.7A EP15165713A EP2940667A2 EP 2940667 A2 EP2940667 A2 EP 2940667A2 EP 15165713 A EP15165713 A EP 15165713A EP 2940667 A2 EP2940667 A2 EP 2940667A2
Authority
EP
European Patent Office
Prior art keywords
housing part
functional unit
housing
hazard detector
measuring chamber
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Withdrawn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
EP15165713.7A
Other languages
German (de)
English (en)
Other versions
EP2940667A3 (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 EP2940667A2 publication Critical patent/EP2940667A2/fr
Publication of EP2940667A3 publication Critical patent/EP2940667A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 end up in the measuring chamber. In the measuring chamber, for example, an optical detection device is arranged which detects the entry of smoke into the measuring chamber on the basis of a changed scattering behavior for light emitted by the optical detection device. If a permitted smoke concentration in the measuring chamber is exceeded, an optical and / or acoustic alarm is triggered.
  • hazard alarms often have an actuating element, 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.
  • hazard alarms can be supplied with electrical energy via a power connection laid in the wall. This, however, a considerable installation effort is connected. This is especially true when in buildings a large number of danger detectors must be installed, which is the case regularly. It is therefore also known to equip hazard alarms with a battery as an electrical energy source to reduce installation costs. However, a considerable amount of maintenance is associated with this type of energy supply. So the batteries must be replaced regularly by staff on site.
  • a smoke detector which comprises a multi-part housing with a printed circuit board received within the housing.
  • the circuit board is arranged between two intermediate pieces of the housing.
  • the DE 36 083 393 A1 discloses a smoke detector with a housing having a housing bottom and a hood. Within the housing, resting on the lower housing part, a support plate is mounted, on which in turn an optical bench is arranged.
  • the optical bench comprises an optical detection device which is surrounded by a cylindrical lateral surface. The lateral surface delimits together with a portion of the upper housing part of the measuring chamber, wherein between these elements an annular inlet opening is formed.
  • the present invention seeks to provide a danger detector, in particular smoke detectors, which is characterized by the simplest possible structure and thereby in particular allows a simple and cost-effective production and / or assembly.
  • a generic danger detector with a housing, a measuring chamber formed inside the housing and a detection device for detecting a gas in the measuring chamber is characterized according to the invention in that the housing has a housing lower part and an upper housing part which delimit the measuring chamber and furthermore a (at least) a detection element of the detection device is provided integrating functional unit, which is held between the lower housing part and the upper housing part.
  • the functional unit may also comprise a printed circuit board, with a section of the printed circuit board particularly preferably being able to be held between the lower housing part and the upper housing part.
  • the printed circuit board can have both a structural and an electrical function.
  • Both the production and the installation of the hazard alarm according to the invention can be further improved if the functional unit as many as possible, preferably all of the required for the basic function of the hazard detector functional elements receives.
  • this may in particular also be a control unit and / or an actuating element. It can be provided in particular that the one or more detection elements and the actuating element via printed conductors of the printed circuit board are electrically connected to the control unit.
  • the control unit may include a processor and a memory, on which operating software is stored, which is designed to evaluate signals transmitted by the detection device, and thereby close to the exceeding of a limit value for a gas to be detected, in particular flue gas can.
  • the control unit may be further configured to transmit an alarm signal to an alarm device when the threshold has been exceeded.
  • the alarm device may be, for example, an optical and / or acoustic alarm, which are then preferably likewise integrated in the functional unit and, in particular, permanently and electrically connected to the printed circuit board of the functional unit.
  • the control unit can furthermore be designed, upon actuation of the actuating element, for a functional test of the detection device to perform or enable and / or interrupt an already triggered alarm an alarm device.
  • the measuring chamber is delimited by a tubular housing section of the housing lower part and a cover-shaped housing section of the housing upper part.
  • a (preferably as largely, particularly preferably completely encircling) inlet opening is formed for a gas to be detected.
  • the cross-sectional shape of the tubular housing portion may be formed as desired, wherein preferably a (partially) annular and in particular (partially) annular configuration may be provided. Square cross-sectional shapes are also possible.
  • 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 housing upper part has guide walls extending from the cover-shaped housing section, wherein the functional unit is held between free ends of the guide walls and the housing lower part.
  • the guide walls By means of the guide walls, the formation of a spiral flow of the gas to be detected can be avoided around the tubular housing portion. This is advantageous since such a spiral flow can delay the entry of the gas to be detected into the measuring chamber.
  • the baffles By means of the baffles, the most direct possible guidance of the gas to the inlet opening can be achieved.
  • the guide walls are aligned parallel and in particular radially with respect to a longitudinal axis of the measuring chamber and or abut an outer side of the tubular housing portion.
  • 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.
  • a preferred constructive development of the danger detector according to the invention which in turn can simplify in particular the manufacture and / or installation of the hazard detector, may consist in that the upper housing part and the lower housing part are connected to each other by means of a fastening web penetrating the functional unit and in particular a circuit board of the functional unit.
  • the fastening web is integrally connected to the lower housing part or the upper housing part and extends into an opening of the corresponding other Geffeunter- or upper part and is held fixed in this opening.
  • a latching connection in which a projection or a recess of the fastening web elastically acted upon in a recess of the wall forming the opening engages or a corresponding projection of the wall engages in a recess of the fastening web.
  • the latching connection can be releasably or not (non-destructive) releasably formed.
  • it may also be provided to weld the fastening web in the opening (not detachably), for example by means of an ultrasonic welding process.
  • the lower housing part may preferably form a partition wall, wherein the functional unit is arranged on one side of the partition wall and a functional module on the other side of the partition wall.
  • the functional module can be electrically conductively connected to the functional unit via a plug-in connection penetrating the dividing wall.
  • Such an embodiment may make it possible to equip the hazard alarm according to the invention in a simple manner and particularly easy to install with optional functional elements, which via the connector to the functional unit and in particular to a in the Function unit integrated control unit can be connected.
  • the physical separation of the functional unit and of the functional module by means of the partition wall of the housing lower part can protect the functional unit or the functional elements integrated in it from damage during assembly or disassembly of the functional module.
  • the functional module may include, for example, a radio module as a functional element. This can be used to transmit an alarm signal wirelessly to one or more remote receiving stations.
  • a receiving station can be integrated, for example, in a personnel monitored monitoring center and connected there with one or more alarms. It is also possible and preferred, however, that a plurality of hazard detectors, each having such a radio module and a receiving station, be wirelessly coupled together, so that it can be achieved that the detection of a limit exceeding concentration of a gas by a hazard alarm to an alarm triggering multiple and especially of all interconnected hazard detector leads.
  • the housing forms a (provided for receiving at least one battery) battery compartment, wherein arranged in the battery compartment contact elements form contact tabs which rest elastically deformed at contact points of the circuit board.
  • a particularly advantageous structural design of the danger detector according to the invention can still be provided that the battery compartment is limited by a passage opening of the partition and further preferably by a bottom plate of the housing base and the circuit board.
  • This can be a safe Holding one or more arranged in the battery compartment batteries can be achieved without additional support elements would have to be provided.
  • 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 releasably connected to the lower housing part. 1 is connectable. 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.
  • tubular housing section 6 In the tubular housing section 6 are two upwards, i. in the direction of the upper housing part 2, open receiving housing 9 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.
  • the detection elements 10 are attached to a circuit board 13 of the functional unit 3 and contact electrically conductive tracks of the circuit board 13. Furthermore, a control unit (not visible), a sounder 14, an actuator 15 and a connector 16 fixed and electrically conductive connected to the circuit board 13. 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 to 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 spaced from the free end of the tubular housing portion 6 of the housing base 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.
  • From the cover-shaped housing portion 19 of the housing upper part 2 extend in Direction of the lower housing part 1 two at least partially circumferential, in the radial direction of the tubular housing portion 6 spaced collar 21, one of which is disposed on the inside and the other on the outside of the measuring chamber 7 and extending so far in the direction of the housing base 1, that this the inlet opening Cover 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 baffles 22 abut in the mounted state of the danger detector on the outside of the tubular housing portion 6.
  • 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 Mistake. 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 is arranged for the most part within the receiving module of the housing, which also accommodates the functional module 4.
  • the battery compartment is formed upward from a portion of the circuit board 13 of the functional unit 3, downwardly from the bottom plate, and laterally from the insides of one in the partition wall 5 of the lower housing part 1 Through opening 27 limited and the battery 26 thus safely held within the hazard alarm.
  • 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.
  • a (basic) installation of the hazard detector is relatively simple due to the layer structure according to the invention.
  • 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 mounting web 31 protrudes through a corresponding passage opening 32 in the circuit board 13 of the functional unit 3 and into a corresponding mounting hole 33 of the upper housing part 2.
  • the lower housing part 1, the functional unit 3 and the upper housing part 2 are permanently and not (non-destructive) releasably 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 openings in the housing cover simultaneously ensure that gas to be detected can flow into the measuring chamber 7.

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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-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
EP15165713.7A 2014-04-30 2015-04-29 Dispositif d'alarme Withdrawn EP2940667A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014106120.9A DE102014106120A1 (de) 2014-04-30 2014-04-30 Gefahrenmelder

Publications (2)

Publication Number Publication Date
EP2940667A2 true EP2940667A2 (fr) 2015-11-04
EP2940667A3 EP2940667A3 (fr) 2016-03-09

Family

ID=53015665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15165713.7A Withdrawn EP2940667A3 (fr) 2014-04-30 2015-04-29 Dispositif d'alarme

Country Status (2)

Country Link
EP (1) EP2940667A3 (fr)
DE (1) DE102014106120A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115469056A (zh) * 2022-07-22 2022-12-13 康威通信技术股份有限公司 一种具有防水功能的固定式多合一气体探测器及方法
US20230236109A1 (en) * 2022-01-24 2023-07-27 Excelitas Canada, Inc. Dual-Emitter Optic Block and Chamber for Smoke Detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112781653B (zh) * 2020-12-30 2022-05-27 宁夏师范学院 一种化学实验室环境检测监控装置及其监控方法

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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170150A (en) * 1991-01-25 1992-12-08 Gentex Corporation Photoelectric smoke detector with improved testing means
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
GB2401936A (en) * 2003-05-23 2004-11-24 Apollo Fire Detectors Ltd Light sensor for smoke detector
US7616126B2 (en) * 2006-07-18 2009-11-10 Gentex Corporation Optical particle detectors
JP5576776B2 (ja) * 2010-03-01 2014-08-20 パナソニック株式会社 圧電スピーカおよびこの圧電スピーカを用いた警報装置
GB201006683D0 (en) * 2010-04-21 2010-06-09 Fireangel Ltd Smoke alarm

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
US20230236109A1 (en) * 2022-01-24 2023-07-27 Excelitas Canada, Inc. Dual-Emitter Optic Block and Chamber for Smoke Detector
CN115469056A (zh) * 2022-07-22 2022-12-13 康威通信技术股份有限公司 一种具有防水功能的固定式多合一气体探测器及方法

Also Published As

Publication number Publication date
EP2940667A3 (fr) 2016-03-09
DE102014106120A1 (de) 2015-11-05

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