EP3364389B1 - Hazard warning device with coverable air passage opening - Google Patents

Hazard warning device with coverable air passage opening Download PDF

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Publication number
EP3364389B1
EP3364389B1 EP17156501.3A EP17156501A EP3364389B1 EP 3364389 B1 EP3364389 B1 EP 3364389B1 EP 17156501 A EP17156501 A EP 17156501A EP 3364389 B1 EP3364389 B1 EP 3364389B1
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EP
European Patent Office
Prior art keywords
warning device
cover element
detector
passage
cover
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.)
Active
Application number
EP17156501.3A
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German (de)
French (fr)
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EP3364389A1 (en
Inventor
Andre Hein
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.)
Heim Mark
Original Assignee
Heim Mark
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Publication date
Application filed by Heim Mark filed Critical Heim Mark
Priority to EP17156501.3A priority Critical patent/EP3364389B1/en
Priority to HUE17156501 priority patent/HUE044839T2/en
Priority to PCT/EP2018/053071 priority patent/WO2018149713A1/en
Publication of EP3364389A1 publication Critical patent/EP3364389A1/en
Application granted granted Critical
Publication of EP3364389B1 publication Critical patent/EP3364389B1/en
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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
    • 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

Definitions

  • the invention relates to a hazard detector, with an attachable to a wall or ceiling of a room detector housing in which at least one inner detection space, at least one sensor unit and an evaluation / control unit is arranged, wherein the detector housing has at least one passage opening for the surrounding air, the opens into the detection space, so that the room air in and out of the detection space, which detects the sensor unit, and with a mechanical actuator for changing an effective cross section of the at least one passage opening, wherein the adjusting device at least one cover for the at least one passage opening has, attached to the detector housing movably guided and movable between an operating position and a non-operating position, and vice versa, by an actuator, wherein the cover in the non-operating position, the at least one füreriesöffn ung covers and thus the detection space in front of the ambient air surrounding the danger detector, and in the operating position which releases at least one passage opening.
  • Hazard detector of the type mentioned which are based on detecting the entry of gas and / or smoke in a detection space and a deviation outputting a warning signal from a desired state are generally known in various embodiments.
  • the warning signal can be output acoustically, visually or in another way, for example.
  • Such hazard detectors are usually mounted on a wall or ceiling in interiors of buildings.
  • an optical measuring device is arranged as a sensor unit in this chamber, for example.
  • Such danger detectors must always function properly. After installation, contamination of the at least one passage opening for the surrounding ambient air and / or deposits of dust in the interior of the detection chamber may occur even before startup and, of course, in the course of the operating time, whereby the safe function of the hazard alarm is disturbed. Such impairments occur in particular in rooms with a strong dust accumulation, for example on construction sites or in workshops. Such contamination can negatively affect the sensitivity of the sensor unit and thus of the danger detector, the device can at worst fail completely. It is therefore desirable for safe operation, the danger detector or the sensor unit located in the detector housing to protect against such contamination in the best possible way. This applies both when the hazard detector is out of service and in operation.
  • the DE 10 2004 029 242 B4 discloses a hazard detector, in particular gas or fire detectors, in which a metallic protective sieve covering the openings is provided at the intended passage openings for the surrounding room air.
  • the protective screen prevents the entry of larger smoke and / or dirt particles in the inner detection space of the hazard alarm.
  • the DE 203 18 331 U1 teaches a smoke detector with a housing provided with air inlet openings and a sensor unit arranged in the housing, wherein a protective film covers the air inlet openings which can be removed from the air inlet openings when the smoke detector is finally put into operation.
  • the EP 0 040 342 A1 deals with a smoke detector with at least one smoke chamber, which has a base plate with a fixed to a ceiling ceiling and a hanging attached to the base plate, the smoke chamber enclosing housing having openings for the entry of the surrounding air into the smoke chamber.
  • the smoke detector has a manually adjustable device, with which the air inlet openings can be changed so that the smoke detector can be adapted to different environmental conditions, in particular with different dust accumulation during assembly in order to minimize the contamination of the detection space.
  • the US 2007/0171084 A1 discloses a personal safety device comprising a shroud means, a lighting means and a smoke detector means and enclosed by the shroud means in a first closed arrangement of the apparatus and accessible to the ambient atmosphere in a second open arrangement, the smoke alarm means being provided with a control means in that it is adapted to activate it when the device is in the open configuration and to inactivate it when the device is in the closed configuration.
  • the device is arranged so that it can be grasped by hand.
  • the sheathing means comprises an elongate, generally cylindrical housing means, wherein the illumination means at a first end thereof and the smoke detector means is attached to a second, from the first remote end.
  • the US 4,540,980 teaches a portable fire alarm unit having a housing which abuts against or adjacent to the inside of a door of a room and includes an alarm warning device, a temperature detector and a fire alarm control device responsive to the temperature sensing means is coupled.
  • the housing has at least one opening in the walls to permit the passage of smoke to the smoke sensor, the housing being in the form of a pair of telescoping telescoping shells, the at least one opening being closed in a first intended position and open to a second provided position is.
  • the US 2005/0035868 A discloses a recessed detector assembly comprising: a detector frame adapted to be mounted flush with a mounting box mounted in a ceiling or wall, the frame having exposed ventilation apertures to allow air, the airborne ones Contains substances entering the frame; at least one sensor mounted in the detector frame for detecting one or more of the airborne substances; Means for aspirating the airborne substances, wherein the at least one sensor generates a signal that causes the means for aspirating the one or more airborne substances to operate when a presence of the one or more of the airborne substances is detected to exceed predetermined values ,
  • a vent is preferably formed on a cover plate of the detector frame.
  • the object of the invention is to propose a possibility with which the passage openings leading to the detection space for the ambient air surrounding the hazard detector and the detection space can be protected at any time quickly, safely and simply, and in particular without additional manual measures, from undesired soiling.
  • the hazard detector comprises an electric drive motor which moves the actuator, wherein the drive motor is connected to the evaluation / control unit which controls the drive motor and determines the position of the at least one cover element for the operating position and the non-operating position, and wherein the evaluation - / Control unit is remotely controllable and has a connection via wire, a radio receiving module or an infrared receiving module, via which the drive motor can be activated and deactivated.
  • the electric drive motor is connected in one embodiment of the invention with a motor controller which controls the drive motor and determines the position of the at least one cover element for the operating position and the non-operating position.
  • the engine control is part of the evaluation / control unit of the hazard alarm.
  • the danger detector according to the invention is, in particular, a fire detector, smoke detector or gas detector, wherein the sensor unit provided may preferably be designed as a gas detector, sound detector, optical detector or a combination thereof.
  • the mechanical adjusting device is provided for changing an effective cross section of the at least one passage opening for the surrounding room air having at least one cover element for the at least one passage opening, which is movably guided on the detector housing and movable between an operating position and a non-operating position and vice versa by an actuator is.
  • the cover In the non-operating position, the cover completely covers the at least one passage opening and thus encapsulates the at least one detection space of the ambient air surrounding the hazard detector.
  • the cover element releases the at least one passage opening, so that ambient air surrounding the danger detector can enter the at least one detection space.
  • the cover engages in the non-operating position, the at least one passage opening and can also completely seal them. This will be the entry Room air, especially polluted room air, reliably prevented in the detection room. Is the at least one passage opening through the cover completely closed and thus precluded entry of ambient air surrounding the hazard detector in the detection space, the sensor unit can logically no longer detect hazards in the room.
  • the non-operating position of the cover is generally used only when the sensor unit and / or the evaluation / control unit of the hazard alarm are not in operation. In the operating position of the cover member, this at least partially, ideally completely free at least one passage opening.
  • the cover element If the cover element is in the operating position, the ambient air surrounding the danger detector can enter and exit the detection space, so that the sensor unit detects a potential danger and the evaluation / control unit visually, acoustically and / or otherwise signals a detected danger can.
  • the effective cross section of the at least one passage opening can also be varied in order to adapt this particular to different dust accumulation during operation of the hazard detector.
  • the hazard detector according to the invention can be configured, for example, as a fire detector, smoke detector and / or gas detector.
  • a connecting channel running straight and / or in a labyrinth can lead to the detection space from the passage opening of the detector housing and / or a protective screen can be provided in the region of the at least one passage opening.
  • the danger detector according to the invention can be designed as a "stand-alone" or as a networkable detector. It may have a built-in battery for an internal power supply or a voltage connection for an external power supply. Networkable hazard detectors can communicate either with a radio link or via a cable connection with other hazard detectors or a remote security control panel.
  • an acoustic and / or optical signaling unit is preferably arranged in the detector housing, over which an optical and / or acoustic warning signal can be output in the event of danger.
  • the detector housing usually consists of at least two housing halves, ie an upper and a lower housing part, wherein the lower housing part is designed for fastening the smoke detector to a wall or ceiling and in the upper housing part the detection space, the sensor unit, the evaluation / control unit , the signaling unit and the power supply are arranged. Accordingly, one or more passage openings are formed on the upper housing part.
  • the upper housing part may have any housing shape. It may for example be formed completely cylindrical or dome-shaped or partially cylindrical, with an attached dome or an attached dome.
  • the lower housing part is preferably designed as a base. For fixing the lower base part to the wall or ceiling, for example, fastening holes, a suspension hook or a magnetic holder may be provided.
  • the at least one cover element is pivotally connected to the detector housing and has at least one cover flap for the at least one passage opening.
  • a cover flap is designed without breakthroughs.
  • two cover flaps are provided, which are in particular identical.
  • the at least one cover flap is pivotable about a virtual pivot axis relative to the detector housing and thus opposite the at least one passage opening for the surrounding room air.
  • the virtual pivot axis is determined by two mutually associated bearing points of the cover flap and the detector housing.
  • the cover flap can between the non-operating position, in which it completely isolated the at least one detection space from the surrounding room air and the operating position in which it releases the at least one passage completely or partially, thus allowing the surrounding room air access to the at least one detection space, manually or be moved back and forth via a drive. Any intermediate positions are possible.
  • the at least one cover is rotatably connected to the detector housing and has at least one cover for the at least one passage opening.
  • a single cap is used.
  • a plurality of concentrically arranged cover caps are possible.
  • the at least one cap is arranged around a virtual axis of rotation, which is preferably provided centrally on the cap and the detector housing.
  • the axis of rotation is preferably determined by a single bearing point.
  • the covering cap can be designed either as a covering hub, rotary sleeve, rotary cap, rotary dome or as a rotary ring, which is rotatably mounted inside or outside on the detector housing.
  • the at least one cover element in the form is at least partially adapted to a contour region of the detector housing, which has the at least one passage opening.
  • the cover element has at least one passage point assigned to the surrounding ambient air to at least one passage opening of the detector housing.
  • the at least one passage point may be formed, for example, in an edge or a central region of the cover. It is designed as a breakthrough and can have any geometric shape. Ideally, this is to the Adapted shape of the passage opening. It may be slightly larger or smaller than the passage opening. It is important that the at least one passage point in the non-operating position of the cover completely adjacent to the at least one passage opening can be arranged, so that the passage opening is then completely closed.
  • the at least one passage point In the operating position, the at least one passage point completely or partially overlaps the at least one passage opening, so that the ambient air surrounding the hazard detector can pass through the at least one passage point to the at least one passage opening and thus can penetrate through the at least one passage opening into the inner detection space of the detector housing ,
  • the at least one intended passage point can optionally be provided with a protective grid or protective screen, which prevents the entry of coarse particles into the detection space.
  • the cover element, the at least one cover flap or the at least one cover cap can be arranged on the detector housing inside or outside.
  • the at least one cover element is arranged on the outside of the detector housing and releasably connected to the detector housing. This allows the cover, which is preferably locked to the detector housing, easily remove from the detector housing to clean the detector housing and / or the cover from contamination.
  • the at least one cover element is preferably to be removed without tools from the detector housing and placed on this.
  • the at least one cover element is preferably detachably couplable to the actuator.
  • the cover element couples automatically when connecting to the detector housing with the actuator and decoupled from this automatically when removing the cover from the detector housing. This ensures that the at least one cover element in the state mounted on the detector housing is in engagement with the actuator and thus the at least one cover element can be moved at any time by the actuator. In addition, this ensures that the Cover element and / or actuator is not damaged when removing the cover from the detector housing.
  • the at least one cover is rotatably connected to the detector housing and has a at least one cover and / or cross-over, preferably removable from the detector housing guard element, which in the assembled state immovably releasably connected to the detector housing is, wherein the protective cover member has at least one of the at least one passage point of the cap associated hood recess.
  • the at least one hood recess is suitably adapted to the shape of the at least one passage point of the cover cap. It may be smaller, equal or larger than these and may optionally be provided with a protective grid or protective screen.
  • the at least one cover element In the non-operating position, the at least one cover element preferably completely closes off the at least one hood recess and releases it at least partially in the operating position.
  • an additional temperature sensor is provided outside the detection space, this is arranged next to or outside of the cover and is not covered by the at least one cover in the non-operating position.
  • the detection of the temperature of the ambient air surrounding the danger detector allows. In this way, an alarm can be triggered when the temperature exceeds a set value.
  • the advantages of the invention over the prior art is that the leading to the detection space passages and the detection space of the hazard alarm at any time quickly, safely and easily isolated from the ambient air and this can be protected from unwanted contamination when the ambient air is heavily contaminated with dirt particles.
  • the detectors are often shut down by the operator of the fire alarm system and provided with a dust cap. If the ambient air is no longer heavily contaminated by dirt particles, the cap is removed and the detector is reactivated. This process is very time-consuming and thus associated with high costs.
  • the detector is not masked by the operator, but by an unauthorized person or otherwise covered manually. In these cases, the detection of the detector is often forgotten.
  • the adjustment of the amount of air entering the detection space can be carried out remotely by at least one Covering element, which is designed as a cover flap or cap, in its position by means of an electrically driven mechanically acting adjusting device between an operating position and a non-operating position is movable, which covers the at least one passage opening to the detection space in the non-operating position and releases it in the operating position.
  • the FIG. 1 shows an embodiment of a standard hazard detector 1 of the prior art, without adjusting device for changing the effective cross section of the passage openings.
  • the hazard detector can be designed as a fire detector, smoke detector or gas detector.
  • the hazard detector 1 has a detector housing 2 which can be attached to a wall or ceiling of a room, in which at least one inner detection space, at least one sensor unit and an evaluation / control unit are arranged. These are in the FIG. 1 not visible.
  • the detector housing 2 has a number of passage openings 3 for the surrounding room air, which open into the concealed detection space, so that the room air surrounding the hazard detector 1 can enter and exit the detection space, the detection space being detected by the non-visible sensor unit which, for example, monitors the incoming room air in an optical, chemical or physical process.
  • the detector housing 2 is formed in two parts and has a lower housing part 4 and an upper housing part 5.
  • the lower housing part 4 is provided for attachment to a wall or ceiling of a room.
  • the sensor unit and the evaluation / control unit is arranged together with a signaling unit.
  • the inner detection space and the sensor unit are arranged in a middle housing section 6 of the upper housing part 5.
  • the upper housing part 5 has two lateral housing sections 7. On a side housing portion 7 of the upper housing part 5, light indicators 8, connecting elements 9 and a sounder 10 are arranged.
  • the FIG. 2 shows a first embodiment of the invention as a hazard detector 11, which on the in the FIG. 1 illustrated standard hazard detector 1 based.
  • This has an adjusting device 12 with two pivotable cover flaps 13 as cover 14 for the passage openings 3 of the detector housing 2.
  • the two cover flaps 13 are in the FIG. 2 shown in the non-use position of the detector 11.
  • the cover 14 and the two cover flaps 13 of the adjusting device 12 are movably guided on the detector housing 2 at the top of the two lateral housing sections 7 of the upper housing part 5 and between the in the FIG. 2 shown Fish raveswolf and one in the FIG. 3 illustrated operating position of the detector 11 by a in the FIG. 5 shown actuator 27 movable back and forth.
  • the covering element 14 formed by the cover flaps 14 completely covers the middle housing section 6 of the upper housing part 5, thus insulating the passage openings 3 from the room air surrounding the hazard detector 11.
  • an effective protection against contamination is given.
  • a radio antenna 15 is connected at one of the connection elements 9 of a lateral housing section 7.
  • an infrared eye 16 is also arranged.
  • the radio antenna 15 and the infrared eye 16 are connected to one in the FIG. 5 visible evaluation / control unit 17 connected, so that the danger detector is remotely operable and preferably networked.
  • FIG. 3 shows the hazard detector 11 FIG. 2 with the cover flaps 13 in an operating position of the detector 11.
  • the two cover flaps 13 are completely folded away from the central housing section 6 of the upper housing part 5 having the passage openings 3.
  • the ambient air surrounding the hazard detector 11 unhindered by the passage openings 3 in the in the FIG. 4 Visible detection space 18 flow and are detected there by the sensor unit 19.
  • an additional temperature sensor 29 for detecting the temperature of the room air located outside of the detection space 18 is arranged in one of the two lateral housing sections 7 next to the infrared eye 16. This can detect this temperature both in the operating position as well as in the non-operating position.
  • FIG. 4 shows the hazard detector 11 according to the FIG. 2 in a sectional view.
  • the arranged in the central housing portion 6 of the upper housing part 5 detection space 18 and the associated sensor unit 19 can be clearly seen.
  • the FIG. 5 illustrates the drive of the two cover flaps 13 of the danger detector 11.
  • the two cover flaps 13 are independently driven by an electric drive motor 20 each. This is controlled by the evaluation / control unit 17, which is arranged on an electrical circuit board 21 together with the drive motors 20 in the second lateral housing section 7 of the upper housing part 5.
  • the evaluation / control unit 17 which is arranged on an electrical circuit board 21 together with the drive motors 20 in the second lateral housing section 7 of the upper housing part 5.
  • the infrared eye 16 is connected to the circuit board 21, the infrared eye 16 is connected.
  • the two Abdeccklappen 13 have bearings 22 in the region of the two lateral housing sections 7 of the upper housing part 5.
  • bearing journals 23 are provided, which are each received in a cup-shaped bearing 28 and engage with an angular end in a polygonal recess of the cover flaps 13.
  • the drive axle of the two drive motors 20 is in each case provided with a driven worm drive wheel 24, which meshes with a respective drive pinion gear 25 arranged on the bearing journal 23.
  • the driven worm drive wheel 24 no particular, in particular no symmetrical mounting of the two caps 13 is required because each of the cover flaps 13 when activating the drive motors 20 moves to the end stop and thus occupies a defined position, that is automatically adjusted.
  • an additional temperature sensor 29 for detecting the temperature of the danger detector 11 surrounding ambient air. This does not determine the temperature of the room air in the detection space 18, but the outside thereof.
  • the temperature sensor 29 is covered neither in the non-operating position nor in the operating position of the cover tabs 13, so that in both positions, the temperature of the ambient air is detected.
  • the FIG. 6 shows a second embodiment of the invention as a danger detector 31.
  • the illustrated hazard detector 31 has an adjusting device 12 with a rotatable cap 32 as a cover 14 of the detector housing 2.
  • the FIG. 6 represents the cap 32 in the non-operational position of the detector 31.
  • the cap 32 is rotatably connected to the detector housing 2. It is, like the cover flap 13 of the danger detector 11, the middle housing section 6 arranged outside and encompassing the detector housing 2 and releasably connected to the upper housing part 5 of the detector housing 2.
  • the cap 32 in turn has a cover cap 32 and / or cross guard member 33 which is immovably releasably connected to the detector housing 2 in its central housing portion 6 of the upper housing part 5.
  • the guard member 33 has, like the FIG. 7 illustrates a plurality of the passage points 26 of the cap 32 associated hood recesses 34. These correspond in their geometry to the size of the passage points 26 of the cap 32.
  • the cap 32 covers in the non-operating position, the hood recesses 34 of the guard member 33 of the detector housing 2 at least partially from the inside. It closes this at least partially, preferably completely.
  • the cap 32 also conceals the passage openings 3 of the detector housing 2 proportionally.
  • the cap 32, the hood recesses 34 completely close or completely or partially free.
  • the danger detector 31 like the danger detector 11, has a radio antenna 15 (not shown in the figure), an infrared eye 16 and an evaluation / control unit 17, via which it can be remotely controlled and networked. Furthermore, located on one of the two side housing sections 7 in addition to the infrared eye 16, an additional temperature sensor 29 for detecting the temperature of the room air in the non-operating state.
  • FIG. 7 illustrates the danger detector 31 from FIG. 6 , with the Abdecckappe 32 in an operating position of the detector 31.
  • the passages 26 of the cap 32 are aligned with the Haubenausnaturalungen 34 of the guard member 33 so that the ambient air surrounding the danger detector 31 through the passage openings 3 in the inner detection space 18 of the danger detector 31st can get.
  • the drive is shown with actuator 27 of the hazard detector 31.
  • Only a single drive motor 20 is provided, which has an angle gear 35 with an output gear 36.
  • For rotating drive of the cap 32 has this at a lower edge 37 inside a circumferential drive sprocket 38.
  • the guard member 33 is releasably locked to the upper housing part 5 of the detector housing 2 and can be easily removed from this and connected to this again.
  • the covering cap 32 can likewise be removed from the middle housing section 6 of the upper housing part 5.
  • the cap acting as a cover 14 cap 32 couples when connecting to the detector housing 2 independently with the actuator 27 and also automatically decoupled from the actuator 27 during the removal of the detector housing. 2

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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)
  • Fire Alarms (AREA)

Description

Die Erfindung betrifft einen Gefahrenmelder, mit einem an einer Wand oder Decke eines Raumes anbringbaren Meldergehäuse, in dem mindestens ein innerer Detektionsraum, mindestens eine Sensoreinheit sowie eine Auswerte-/Steuereinheit angeordnet ist, wobei das Meldergehäuse wenigstens eine Durchtrittsöffnung für die umgebende Raumluft aufweist, die in den Detektionsraum mündet, so dass die Raumluft in den Detektionsraum ein- und daraus austreten kann, den die Sensoreinheit detektiert, und mit einer mechanischen Stellvorrichtung zur Veränderung eines wirksamen Querschnitts der wenigstens einen Durchtrittsöffnung, wobei die Stellvorrichtung mindestens ein Abdeckelement für die wenigstens eine Durchtrittsöffnung aufweist, das an dem Meldergehäuse beweglich geführt befestigt und zwischen einer Betriebsstellung und einer Nichtbetriebsstellung, sowie umgekehrt, durch ein Stellglied bewegbar ist, wobei das Abdeckelement in der Nichtbetriebsstellung die wenigstens eine Durchtrittsöffnung abdeckt und damit den Detektionsraum vor der den Gefahrenmelder umgebenden Raumluft abkapselt, und in der Betriebsstellung die wenigstens eine Durchtrittsöffnung freigibt.The invention relates to a hazard detector, with an attachable to a wall or ceiling of a room detector housing in which at least one inner detection space, at least one sensor unit and an evaluation / control unit is arranged, wherein the detector housing has at least one passage opening for the surrounding air, the opens into the detection space, so that the room air in and out of the detection space, which detects the sensor unit, and with a mechanical actuator for changing an effective cross section of the at least one passage opening, wherein the adjusting device at least one cover for the at least one passage opening has, attached to the detector housing movably guided and movable between an operating position and a non-operating position, and vice versa, by an actuator, wherein the cover in the non-operating position, the at least one Durchtrittsöffn ung covers and thus the detection space in front of the ambient air surrounding the danger detector, and in the operating position which releases at least one passage opening.

Gefahrenmelder der eingangs genannten Art, die darauf beruhen, den Eintritt von Gas und/oder Rauch in einem Detektionsraum zu detektieren und bei einer Abweichung von einem Sollzustand ein Warnsignal auszugeben, sind allgemein in vielfältigen Ausführungsformen bekannt. Das Warnsignal kann beispielsweise akustisch, optisch oder in anderer Weise ausgegeben werden. Solche Gefahrenmelder werden üblicherweise an einer Wand oder Decke in Innenräumen von Gebäuden angebracht. Zur Detektion von durch die wenigstens eine Durchtrittsöffnung in die Detektionskammer eingetretenem Rauch oder Gas, ist in dieser Kammer beispielsweise eine optische Messeinrichtung als Sensoreinheit angeordnet.Hazard detector of the type mentioned, which are based on detecting the entry of gas and / or smoke in a detection space and a deviation outputting a warning signal from a desired state are generally known in various embodiments. The warning signal can be output acoustically, visually or in another way, for example. Such hazard detectors are usually mounted on a wall or ceiling in interiors of buildings. In order to detect smoke or gas entering the detection chamber through the at least one passage opening, an optical measuring device is arranged as a sensor unit in this chamber, for example.

Derartige Gefahrenmelder müssen jederzeit ordnungsgemäß funktionieren. Nach der Installation kann es bereits vor der Inbetriebnahme und natürlich auch im Laufe der Betriebszeit zu Verschmutzungen der wenigstens einen Durchtrittsöffnung für die umgebende Raumluft und/oder zu Ablagerungen von Staub im Inneren der Detektionskammer kommen, wodurch die sichere Funktion des Gefahrenmelders gestört wird. Solche Beeinträchtigungen treten insbesondere in Räumen mit starkem Staubanfall, beispielsweise auf Baustellen oder auch in Werkstätten auf. Durch derartige Verschmutzungen kann die Empfindlichkeit der Sensoreinheit und damit des Gefahrenmelders negativ beeinflusst werden, das Gerät kann schlimmstenfalls vollständig ausfallen. Es ist daher für einen sicheren Betrieb erwünscht, den Gefahrenmelder bzw. die in dem Meldergehäuse befindliche Sensoreinheit vor derartigen Verschmutzungen bestmöglich zu schützen. Dies gilt sowohl, wenn der Gefahrenmelder außer Betrieb und in Betrieb ist.Such danger detectors must always function properly. After installation, contamination of the at least one passage opening for the surrounding ambient air and / or deposits of dust in the interior of the detection chamber may occur even before startup and, of course, in the course of the operating time, whereby the safe function of the hazard alarm is disturbed. Such impairments occur in particular in rooms with a strong dust accumulation, for example on construction sites or in workshops. Such contamination can negatively affect the sensitivity of the sensor unit and thus of the danger detector, the device can at worst fail completely. It is therefore desirable for safe operation, the danger detector or the sensor unit located in the detector housing to protect against such contamination in the best possible way. This applies both when the hazard detector is out of service and in operation.

Häufig sind gattungsgemäße Gefahrenmelder in Arbeitsräumen angebracht, in denen Personen durch ihre Tätigkeit, wie beispielsweise Schleif-, Bohr- oder Stemmarbeiten oder dergleichen, Staub oder sonstigen Schmutz erzeugen, der zu einer Beeinträchtigung des Gefahrenmelders führen kann. Solange derartige Tätigkeiten ausgeführt werden, kommt es häufig zu Fehlalarmen bei bekannten Gefahrenmeldern, die daher in dieser Zeit üblicherweise außer Betrieb genommen werden. Dies verhindert jedoch nicht, dass die verunreinigte Luft durch die wenigstens eine vorgesehene Durchtrittsöffnung in den inneren Detektionsraum gelangt und sich dort Verschmutzungen ablagern. Ein betriebsbereiter Gefahrenmelder ist in derartigen Räumen auch nicht zwingend erforderlich, solange Personen anwesend sind, da diese gegebenenfalls eine auftretende Gefahr, zum Beispiel einen Brand, selbst erkennen können.Frequently, generic hazard alarms are mounted in working spaces in which persons generate dust or other dirt by their activity, such as grinding, drilling or caulking or the like, which can lead to an impairment of the hazard alarm. As long as such activities are carried out, there are often false alarms in known hazard detectors, which are therefore usually taken out of service during this time. However, this does not prevent the contaminated air from passing through the at least one provided passage opening into the inner detection space and deposits are deposited there. An operational hazard detector is also not mandatory in such areas, as long as people are present, as they may recognize a risk occurring, such as a fire itself.

Zum Stand der Technik wird beispielhaft auf die drei Druckschriften DE 10 2004 029 242 B4 , DE 203 18 331 U1 und EP 0 040 342 A1 verwiesen.The state of the art is exemplified in the three documents DE 10 2004 029 242 B4 . DE 203 18 331 U1 and EP 0 040 342 A1 directed.

Die DE 10 2004 029 242 B4 offenbart einen Gefahrenmelder, insbesondere Gas- oder Brandmelder, bei dem an den vorgesehenen Durchtrittsöffnungen für die umgebende Raumluft ein die Öffnungen abdeckendes metallisches Schutzsieb vorgesehen ist. Das Schutzsieb verhindert den Eintritt von größeren Rauch- und/oder Schmutzpartikeln in den inneren Detektionsraum des Gefahrenmelders.The DE 10 2004 029 242 B4 discloses a hazard detector, in particular gas or fire detectors, in which a metallic protective sieve covering the openings is provided at the intended passage openings for the surrounding room air. The protective screen prevents the entry of larger smoke and / or dirt particles in the inner detection space of the hazard alarm.

Die DE 203 18 331 U1 lehrt einen Rauchmelder, mit einem mit Lufteintrittsöffnungen versehenen Gehäuse und einer in dem Gehäuse angeordneten Sensoreinheit, wobei eine Schutzfolie die Lufteintrittsöffnungen überdeckt, die bei der endgültigen Inbetriebnahme des Rauchmelders von den Lufteintrittsöffnungen entfernbar ist.The DE 203 18 331 U1 teaches a smoke detector with a housing provided with air inlet openings and a sensor unit arranged in the housing, wherein a protective film covers the air inlet openings which can be removed from the air inlet openings when the smoke detector is finally put into operation.

Die EP 0 040 342 A1 behandelt einen Rauchmelder mit mindestens einer Rauchmesskammer, der einen Sockelteller mit einer zur Montage an einer Raumdecke bestimmten oberen und einem hängend an dem Sockelteller befestigten, die Rauchmesskammer umschließenden Gehäuse, welches Öffnungen für den Eintritt der umgebenden Luft in die Rauchmesskammer aufweist. Der Rauchmelder weist eine manuell verstellbare Vorrichtung auf, mit welcher die Luftzutrittsöffnungen so verändert werden können, dass der Rauchmelder an verschiedene Umweltbedingungen, insbesondere mit unterschiedlichem Staubanfall, bei der Montage angepasst werden kann, um die Verschmutzung des Detektionsraumes zu minimieren.The EP 0 040 342 A1 deals with a smoke detector with at least one smoke chamber, which has a base plate with a fixed to a ceiling ceiling and a hanging attached to the base plate, the smoke chamber enclosing housing having openings for the entry of the surrounding air into the smoke chamber. The smoke detector has a manually adjustable device, with which the air inlet openings can be changed so that the smoke detector can be adapted to different environmental conditions, in particular with different dust accumulation during assembly in order to minimize the contamination of the detection space.

Bei dem vorstehend genannten Stand der Technik ist es äußerst schwierig, oft gar unmöglich, die Durchtrittsöffnungen des Gefahrenmelders für die umgebende Luft, den inneren Detektionsraum bzw. die integrierte Sensoreinheit vor Verschmutzungen, z.B. bei Baumaßnahmen oder sonstigen starken Staub verursachenden Arbeiten in Gebäuden oder Räumen, einfach ausreichend zu schützen. Es ist zum einen dadurch bedingt, dass in der Regel die an der Decke des Raumes angebrachten Gefahrenmelder nur schwierig zu erreichen sind und zum anderen meist keine passenden Schutzkappen zur Verfügung stehen, um die Durchtrittsöffnungen zu verschließen, wenn die Gefahrenmelder außer Betrieb genommen werden. Daher werden die Durchtrittsöffnungen in einem solchen Fall nur selten abgedichtet, beispielsweise durch Klebeband. Wird dieses bei der Neu- bzw. Wiederinbetriebnahme des Gefahrenmelders nicht vollständig entfernt, so ist der Gefahrenmelder meist in seiner Funktion beeinträchtigt.In the aforementioned prior art, it is extremely difficult, often impossible, to prevent the passage openings of the ambient air danger detector, the inner detection space or the integrated sensor unit from contamination, For example, during construction or other strong dust-causing work in buildings or rooms, just enough to protect. It is partly due to the fact that usually mounted on the ceiling of the room danger alarm are difficult to reach and on the other hand usually no matching caps are available to close the passages when the hazard alarms are taken out of service. Therefore, the passage openings are rarely sealed in such a case, for example by adhesive tape. If this is not completely removed during the new or re-commissioning of the hazard alarm, the danger alarm is usually impaired in its function.

Zum Stand der Technik wird außerdem noch auf die drei Druckschriften US 2007/0171084 A1 , US 4,540,980 und US 2005/0035868 A , hingewiesen.The prior art is also still on the three documents US 2007/0171084 A1 . US 4,540,980 and US 2005/0035868 A , pointed out.

Die US 2007/0171084 A1 offenbart eine Vorrichtung für die persönliche Sicherheit, die ein Ummantelungsmittel, ein Beleuchtungsmittel und ein Rauchmeldermittel umfasst und in einer ersten geschlossenen Anordnung der Vorrichtung vom Ummantelungsmittel umschlossen wird und in einer zweiten offenen Anordnung für die Umgebungsatmosphäre zugänglich ist, wobei das Rauchmeldermittel mit einem Steuerungsmittel versehen ist, dass so angepasst ist, dass es dieses aktiviert, wenn sich die Vorrichtung in der offenen Anordnung befindet, und dass es dieses inaktiviert, wenn sich die Vorrichtung in der geschlossenen Anordnung befindet. Die Vorrichtung ist so angeordnet, dass sie mit der Hand ergriffen werden kann. Dabei umfasst das Ummantelungsmittel ein längliches, im Allgemeinen zylindrisches Gehäusemittel, wobei das Beleuchtungsmittel an einem ersten Ende desselben und das Rauchmeldermittel an einem zweiten, vom ersten entfernten Ende befestigt ist.The US 2007/0171084 A1 discloses a personal safety device comprising a shroud means, a lighting means and a smoke detector means and enclosed by the shroud means in a first closed arrangement of the apparatus and accessible to the ambient atmosphere in a second open arrangement, the smoke alarm means being provided with a control means in that it is adapted to activate it when the device is in the open configuration and to inactivate it when the device is in the closed configuration. The device is arranged so that it can be grasped by hand. In this case, the sheathing means comprises an elongate, generally cylindrical housing means, wherein the illumination means at a first end thereof and the smoke detector means is attached to a second, from the first remote end.

Die US 4,540,980 lehrt eine tragbare Feueralarmeinheit mit einem Gehäuse, das an oder angrenzend an die Innenseite einer Tür eines Raumes anliegt und eine Alarmwarneinrichtung, eine Temperaturerfassungseinrichtung und eine Feueralarmsteuervorrichtung enthält, die ansprechend mit der Temperaturerfassungseinrichtung gekoppelt ist. Das Gehäuse weist mindestens eine Öffnung in den Wänden auf, um den Rauchübergang zu dem Rauchsensor zuzulassen, wobei das Gehäuse in Form eines Paares von ausfahrbaren teleskopierbaren Schalen ausgebildet ist, wobei die mindestens eine Öffnung in einer ersten vorgesehenen Position verschlossen und einer zweiten vorgesehenen Position offen ist.The US 4,540,980 teaches a portable fire alarm unit having a housing which abuts against or adjacent to the inside of a door of a room and includes an alarm warning device, a temperature detector and a fire alarm control device responsive to the temperature sensing means is coupled. The housing has at least one opening in the walls to permit the passage of smoke to the smoke sensor, the housing being in the form of a pair of telescoping telescoping shells, the at least one opening being closed in a first intended position and open to a second provided position is.

Die US 2005/0035868 A offenbart eine vertiefte Detektoranordnung, umfassend: einen Detektorrahmen, der so ausgebildet ist, dass er bündig in eine Montagebox montiert ist, die in einer Decke oder einer Wand montiert ist, wobei der Rahmen freiliegende Belüftungsöffnungen aufweist, um zu ermöglichen, dass Luft, die luftgetragene Substanzen enthält, in den Rahmen eintritt; mindestens einen Sensor, der in dem Detektorrahmen zum Erfassen eines oder mehrerer der luftgetragenen Substanzen angebracht ist; Mittel zum Absaugen der luftgetragenen Substanzen, wobei der mindestens eine Sensor ein Signal erzeugt, das bewirkt, dass die Mittel zum Absaugen der einen oder mehreren luftgetragenen Substanzen arbeiten, wenn eine Anwesenheit der einen oder mehreren der luftgetragenen Substanzen erfasst wird, um vorbestimmte Werte zu überschreiten. Dabei ist eine Entlüftung vorzugsweise auf einer Abdeckplatte des Detektorrahmens ausgebildet.The US 2005/0035868 A discloses a recessed detector assembly comprising: a detector frame adapted to be mounted flush with a mounting box mounted in a ceiling or wall, the frame having exposed ventilation apertures to allow air, the airborne ones Contains substances entering the frame; at least one sensor mounted in the detector frame for detecting one or more of the airborne substances; Means for aspirating the airborne substances, wherein the at least one sensor generates a signal that causes the means for aspirating the one or more airborne substances to operate when a presence of the one or more of the airborne substances is detected to exceed predetermined values , In this case, a vent is preferably formed on a cover plate of the detector frame.

Davon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Möglichkeit vorzuschlagen, mit der die zum Detektionsraum führenden Durchtrittsöffnungen für die den Gefahrenmelder umgebende Raumluft und der Detektionsraum jederzeit schnell, sicher und einfach, und insbesondere ohne zusätzliche handwerkliche Maßnahmen, vor unerwünschten Verschmutzungen geschützt werden können.Based on this, the object of the invention is to propose a possibility with which the passage openings leading to the detection space for the ambient air surrounding the hazard detector and the detection space can be protected at any time quickly, safely and simply, and in particular without additional manual measures, from undesired soiling.

Diese Aufgabe wird erfindungsgemäß durch einen Gefahrenmelder mit den Merkmalen des Patentanspruchs 1 gelöst. Weitere vorteilhafte Ausführungsformen sind den rückbezogenen Patentansprüchen zu entnehmen.This object is achieved by a hazard detector with the features of claim 1. Further advantageous embodiments can be found in the dependent claims.

Danach weist der erfindungsgemäße Gefahrenmelder einen elektrischen Antriebsmotor auf, der das Stellglied bewegt, wobei der Antriebsmotor mit der Auswerte-/Steuereinheit verbunden ist, die den Antriebsmotor steuert und die Position des mindestens einen Abdeckelementes für die Betriebsstellung und die Nichtbetriebsstellung bestimmt, und wobei die Auswerte-/Steuereinheit fernbedienbar ist und eine Anbindung über Draht, ein Funkempfangsmodul oder ein Infrarotempfangsmodul aufweist, über das der Antriebsmotor aktivierbar und deaktivierbar ist. Der elektrische Antriebsmotor ist in einer Ausführungsform der Erfindung mit einer Motorsteuerung verbunden, die den Antriebsmotor steuert und die Position des mindestens einen Abdeckelementes für die Betriebsstellung und die Nichtbetriebsstellung bestimmt. Die Motorsteuerung ist Teil der Auswerte-/Steuereinheit des Gefahrenmelders.Thereafter, the hazard detector according to the invention comprises an electric drive motor which moves the actuator, wherein the drive motor is connected to the evaluation / control unit which controls the drive motor and determines the position of the at least one cover element for the operating position and the non-operating position, and wherein the evaluation - / Control unit is remotely controllable and has a connection via wire, a radio receiving module or an infrared receiving module, via which the drive motor can be activated and deactivated. The electric drive motor is connected in one embodiment of the invention with a motor controller which controls the drive motor and determines the position of the at least one cover element for the operating position and the non-operating position. The engine control is part of the evaluation / control unit of the hazard alarm.

Bei dem erfindungsgemäßen Gefahrenmelder handelt es sich insbesondere um einen Brandmelder, Rauchmelder oder Gasmelder, wobei die vorgesehene Sensoreinheit vorzugsweise als Gasdetektor, Schalldetektor, Optikdetektor oder einer Kombination davon ausgebildet sein kann. Die mechanische Stellvorrichtung ist zur Veränderung eines wirksamen Querschnitts der wenigstens einen Durchtrittsöffnung für die umgebende Raumluft vorgesehen, die mindestens ein Abdeckelement für die wenigstens eine Durchtrittsöffnung aufweist, das an dem Meldergehäuse beweglich geführt befestigt und zwischen einer Betriebsstellung und einer Nichtbetriebsstellung sowie umgekehrt durch ein Stellglied bewegbar ist. In der Nichtbetriebsstellung deckt das Abdeckelement die wenigstens eine Durchtrittsöffnung vollständig ab und kapselt damit den mindestens einen Detektionsraum von der den Gefahrenmelder umgebenden Raumluft ab. In der Betriebsstellung gibt das Abdeckelement die wenigstens eine Durchtrittsöffnung frei, sodass den Gefahrenmelder umgebende Raumluft in den mindestens einen Detektionsraum gelangen kann.The danger detector according to the invention is, in particular, a fire detector, smoke detector or gas detector, wherein the sensor unit provided may preferably be designed as a gas detector, sound detector, optical detector or a combination thereof. The mechanical adjusting device is provided for changing an effective cross section of the at least one passage opening for the surrounding room air having at least one cover element for the at least one passage opening, which is movably guided on the detector housing and movable between an operating position and a non-operating position and vice versa by an actuator is. In the non-operating position, the cover completely covers the at least one passage opening and thus encapsulates the at least one detection space of the ambient air surrounding the hazard detector. In the operating position, the cover element releases the at least one passage opening, so that ambient air surrounding the danger detector can enter the at least one detection space.

Das Abdeckelement übergreift in der Nichtbetriebsstellung die wenigstens eine Durchtrittsöffnung und kann diese auch komplett abdichten. Damit wird der Eintritt von Raumluft, insbesondere von verschmutzter Raumluft, in den Detektionsraum zuverlässig verhindert. Ist die wenigstens eine Durchtrittsöffnung durch das Abdeckelement vollständig verschlossen und somit ein Eintritt der den Gefahrenmelder umgebenden Raumluft in den Detektionsraum ausgeschlossen, so kann die Sensoreinheit logischerweise keine Gefahren im Raum mehr detektieren. Die Nichtbetriebsstellung des Abdeckelementes wird in der Regel nur benutzt, wenn die Sensoreinheit und/oder die Auswerte-/Steuereinheit des Gefahrenmelders nicht in Betrieb sind. In der Betriebsstellung des Abdeckelementes gibt dieses die wenigstens eine Durchtrittsöffnung vorzugsweise zumindest teilweise, idealerweise vollständig frei. Befindet sich das Abdeckelement in der Betriebsstellung, kann die den Gefahrenmelder umgebende Raumluft in den Detektionsraum ein- und daraus austreten, so dass die Sensoreinheit eine mögliche Gefahr detektieren und die Auswerte-/Steuereinheit eine erkannte Gefahr optisch, akustisch und/oder in anderer Weise signalisieren kann. Mittels des Abdeckelementes kann der wirksame Querschnitt der wenigstens einen Durchtrittsöffnung auch variiert werden, um diesen insbesondere an unterschiedlichen Staubanfall während des Betriebs des Gefahrenmelders anzupassen. Der erfindungsgemäße Gefahrenmelder kann beispielsweise als Brandmelder, Rauchmelder und/oder Gasmelder konfiguriert sein.The cover engages in the non-operating position, the at least one passage opening and can also completely seal them. This will be the entry Room air, especially polluted room air, reliably prevented in the detection room. Is the at least one passage opening through the cover completely closed and thus precluded entry of ambient air surrounding the hazard detector in the detection space, the sensor unit can logically no longer detect hazards in the room. The non-operating position of the cover is generally used only when the sensor unit and / or the evaluation / control unit of the hazard alarm are not in operation. In the operating position of the cover member, this at least partially, ideally completely free at least one passage opening. If the cover element is in the operating position, the ambient air surrounding the danger detector can enter and exit the detection space, so that the sensor unit detects a potential danger and the evaluation / control unit visually, acoustically and / or otherwise signals a detected danger can. By means of the cover, the effective cross section of the at least one passage opening can also be varied in order to adapt this particular to different dust accumulation during operation of the hazard detector. The hazard detector according to the invention can be configured, for example, as a fire detector, smoke detector and / or gas detector.

Unabhängig davon kann von der Durchtrittsöffnung des Meldergehäuses ein sich gerade und/oder labyrinthartig erstreckender Verbindungskanal zu dem Detektionsraum führen und/oder ein Schutzsieb im Bereich der wenigstens einen Durchtrittsöffnung vorgesehen sein.Independently of this, a connecting channel running straight and / or in a labyrinth can lead to the detection space from the passage opening of the detector housing and / or a protective screen can be provided in the region of the at least one passage opening.

Der erfindungsgemäße Gefahrenmelder kann als "stand-alone" oder als vernetzungsfähiger Melder ausgebildet sein. Er kann eine eingebaute Batterie für eine interne Energieversorgung oder einen Spannungsanschluss für eine externe Energieversorgung aufweisen. Vernetzungsfähige Gefahrendetektoren können entweder über eine Funkverbindung oder über eine Kabelverbindung mit anderen Gefahrendetektoren oder einer abgesetzten Gefahrenmeldezentrale kommunizieren. Bei einem erfindungsgemäßen Insel-Gefahrenmelder wie auch bei einem erfindungsgemäßen vernetzbaren Gefahrenmelder ist vorzugsweise in dem Meldergehäuse eine akustische und/oder optische Signalisierungseinheit angeordnet, über die im Gefahrenfall ein optisches und/oder akustisches Warnsignal ausgegeben werden kann. Das Meldergehäuse besteht wie üblich meist zumindest aus zwei Gehäusehälften, d.h. einem oberen und einem unteren Gehäuseteil, wobei das untere Gehäuseteil für die Befestigung des Rauchmelders an einer Wand oder Decke ausgebildet und in dem oberen Gehäuseteil der Detektionsraum, die Sensoreinheit, die Auswerte-/Steuereinheit, die Signalisierungseinheit und die Spannungsversorgung angeordnet sind. Entsprechend sind eine oder mehrere Durchtrittsöffnungen an dem oberen Gehäuseteil ausgebildet. Das obere Gehäuseteil kann eine beliebige Gehäuseform aufweisen. Es kann beispielsweise vollkommen zylindrisch oder kuppelförmig ausgebildet sein oder teilzylindrisch, mit einer aufgesetzten Kuppel oder einem aufgesetzten Dom. Das untere Gehäuseteil ist vorzugsweise als Sockel ausgebildet. Für die Befestigung des unteren Sockelteils an der Wand oder Decke können beispielsweise Befestigungsbohrungen, ein Aufhängehaken oder eine Magnethalterung vorgesehen sein.The danger detector according to the invention can be designed as a "stand-alone" or as a networkable detector. It may have a built-in battery for an internal power supply or a voltage connection for an external power supply. Networkable hazard detectors can communicate either with a radio link or via a cable connection with other hazard detectors or a remote security control panel. In an island hazard detector according to the invention as well as in a crosslinkable danger detector according to the invention, an acoustic and / or optical signaling unit is preferably arranged in the detector housing, over which an optical and / or acoustic warning signal can be output in the event of danger. As usual, the detector housing usually consists of at least two housing halves, ie an upper and a lower housing part, wherein the lower housing part is designed for fastening the smoke detector to a wall or ceiling and in the upper housing part the detection space, the sensor unit, the evaluation / control unit , the signaling unit and the power supply are arranged. Accordingly, one or more passage openings are formed on the upper housing part. The upper housing part may have any housing shape. It may for example be formed completely cylindrical or dome-shaped or partially cylindrical, with an attached dome or an attached dome. The lower housing part is preferably designed as a base. For fixing the lower base part to the wall or ceiling, for example, fastening holes, a suspension hook or a magnetic holder may be provided.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Gefahrenmelders ist das mindestens eine Abdeckelement schwenkbar mit dem Meldergehäuse verbunden und weist mindestens eine Abdeckklappe für die wenigstens eine Durchtrittsöffnung auf. Eine solche Abdeckklappe ist ohne Durchbrüche ausgeführt. Vorzugsweise sind zwei Abdeckklappen vorgesehen, die insbesondere identisch ausgebildet sind. Die mindestens eine Abdeckklappe ist um eine virtuelle Schwenkachse gegenüber dem Meldergehäuse und damit gegenüber der wenigstens einen Durchtrittsöffnung für die umgebende Raumluft schwenkbar. Die virtuelle Schwenkachse wird durch jeweils zwei einander zugeordnete Lagerstellen der Abdeckklappe und des Meldergehäuses bestimmt. Die Abdeckklappe kann zwischen der Nichtbetriebsstellung, in der sie den mindestens einen Detektionsraum vor der umgebenden Raumluft vollständig isoliert und der Betriebsstellung, in der sie die wenigstens eine Durchtrittsöffnung ganz oder teilweise freigibt und so der umgebenden Raumluft Zugang zu dem mindestens einen Detektionsraum gewährt , manuell oder über einen Antrieb hin oder her bewegt werden. Dabei sind auch beliebige Zwischenstellungen möglich.In a preferred embodiment of the danger detector according to the invention, the at least one cover element is pivotally connected to the detector housing and has at least one cover flap for the at least one passage opening. Such a cover flap is designed without breakthroughs. Preferably, two cover flaps are provided, which are in particular identical. The at least one cover flap is pivotable about a virtual pivot axis relative to the detector housing and thus opposite the at least one passage opening for the surrounding room air. The virtual pivot axis is determined by two mutually associated bearing points of the cover flap and the detector housing. The cover flap can between the non-operating position, in which it completely isolated the at least one detection space from the surrounding room air and the operating position in which it releases the at least one passage completely or partially, thus allowing the surrounding room air access to the at least one detection space, manually or be moved back and forth via a drive. Any intermediate positions are possible.

In einer anderen Ausführungsform des erfindungsgemäßen Gefahrenmelders ist das mindestens eine Abdeckelement drehbar mit dem Meldergehäuse verbunden und weist mindestens eine Abdeckkappe für die wenigstens eine Durchtrittsöffnung auf. Vorzugsweise wird eine einzige Abdeckkappe verwendet. Alternativ sind auch mehrere konzentrisch zueinander angeordnete Abdeckkappen möglich. Die mindestens eine Abdeckkappe ist um eine virtuelle Drehachse angeordnet, die vorzugsweise zentral an der Abdeckkappe und dem Meldergehäuse vorgesehen ist. Die Drehachse wird vorzugsweise durch eine einzige Lagerstelle bestimmt. Dabei kann die Abdeckkappe abhängig von der Form des oberen Gehäuseteils entweder als abdeckende Drehscheibe, Drehhülse, Drehkappe, Drehkuppel oder als Drehring ausgebildet sein, die innen oder außen an dem Meldergehäuse drehbar befestigt ist.In another embodiment of the hazard alarm according to the invention, the at least one cover is rotatably connected to the detector housing and has at least one cover for the at least one passage opening. Preferably, a single cap is used. Alternatively, a plurality of concentrically arranged cover caps are possible. The at least one cap is arranged around a virtual axis of rotation, which is preferably provided centrally on the cap and the detector housing. The axis of rotation is preferably determined by a single bearing point. In this case, depending on the shape of the upper housing part, the covering cap can be designed either as a covering hub, rotary sleeve, rotary cap, rotary dome or as a rotary ring, which is rotatably mounted inside or outside on the detector housing.

Vorzugsweise ist das mindestens eine Abdeckelement in der Form zumindest abschnittsweise an einen Konturbereich des Meldergehäuses angepasst, der die wenigstens eine Durchtrittsöffnung aufweist. Damit ist sichergestellt, dass die mindestens eine Abdeckklappe bzw. die mindestens eine Abdeckkappe in der Nichtbetriebsstellung an dem die mindestens eine Durchtrittsöffnung aufweisenden Konturbereich des Meldergehäuses in Anlage oder mit geringem Abstand dazu angeordnet ist. Dies sorgt dafür, dass das wenigstens eine Abdeckelement in der Nichtbetriebsstellung den Zugang von Umgebungsluft zu der wenigstens einen Durchtrittsöffnung und dem mindestens einen Detektionsraum vollständig verschließt. Es besteht damit auch die Möglichkeit, leichte Verschmutzungen des Meldergehäuses in dem Konturbereich um die Durchtrittsöffnungen beim Bewegen der Abdeckklappe bzw. der Abdeckkappe zu beseitigen.Preferably, the at least one cover element in the form is at least partially adapted to a contour region of the detector housing, which has the at least one passage opening. This ensures that the at least one cover flap or the at least one cover cap is arranged in the non-operating position on the at least one passage opening having contour portion of the detector housing in contact or at a small distance therefrom. This ensures that the at least one cover element completely closes the access of ambient air to the at least one passage opening and the at least one detection space in the non-operating position. It is therefore also possible to eliminate slight contamination of the detector housing in the contour area around the passage openings when moving the cover flap or the cap.

In einer bevorzugten Ausführungsform der Erfindung weist das Abdeckelement mindestens eine der wenigstens einen Durchtrittsöffnung des Meldergehäuses zugeordnete Durchlassstelle für die umgebende Raumluft auf. Die wenigstens eine Durchlassstelle kann beispielsweise in einen Rand- oder einen Mittelbereich des Abdeckelementes ausgebildet sein. Sie ist als Durchbruch ausgeführt und kann eine beliebige geometrische Form aufweisen. Idealerweise ist diese an die Form der Durchtrittsöffnung angepasst. Sie kann etwas größer oder kleiner als die Durchtrittsöffnung ausgebildet sein. Wichtig ist dabei, dass die wenigstens eine Durchlassstelle in der Nichtbetriebsstellung des Abdeckelementes vollständig neben der wenigstens einen Durchtrittsöffnung anordenbar ist, so dass die Durchtrittsöffnung dann vollständig verschlossen ist. In der Betriebsstellung übergreift die mindestens eine Durchlassstelle die wenigstens eine Durchtrittsöffnung ganz oder teilweise, so dass die den Gefahrenmelder umgebende Raumluft durch die mindestens eine Durchlassstelle zu der wenigstens einen Durchtrittsöffnung gelangen kann und so durch die wenigstens eine Durchtrittsöffnung in den inneren Detektionsraum des Meldergehäuses eindringen kann. Die mindestens eine vorgesehene Durchlassstelle kann optional mit einem Schutzgitter oder Schutzsieb versehen sein, das den Eintritt von groben Partikeln in den Detektionsraum verhindert.In a preferred embodiment of the invention, the cover element has at least one passage point assigned to the surrounding ambient air to at least one passage opening of the detector housing. The at least one passage point may be formed, for example, in an edge or a central region of the cover. It is designed as a breakthrough and can have any geometric shape. Ideally, this is to the Adapted shape of the passage opening. It may be slightly larger or smaller than the passage opening. It is important that the at least one passage point in the non-operating position of the cover completely adjacent to the at least one passage opening can be arranged, so that the passage opening is then completely closed. In the operating position, the at least one passage point completely or partially overlaps the at least one passage opening, so that the ambient air surrounding the hazard detector can pass through the at least one passage point to the at least one passage opening and thus can penetrate through the at least one passage opening into the inner detection space of the detector housing , The at least one intended passage point can optionally be provided with a protective grid or protective screen, which prevents the entry of coarse particles into the detection space.

Prinzipiell kann das Abdeckelement, die mindestens eine Abdeckklappe oder die mindestens eine Abdeckkappe innen oder außen an dem Meldergehäuse angeordnet sein. Vorzugsweise ist in einer Ausführungsform das mindestens eine Abdeckelement außen an dem Meldergehäuse angeordnet und lösbar mit dem Meldergehäuse verbunden. Dies ermöglicht, das Abdeckelement, das vorzugsweise mit dem Meldergehäuse verrastet ist, einfach von dem Meldergehäuse abzunehmen, um das Meldergehäuse und/oder das Abdeckelement vor Verschmutzungen zu reinigen. Das mindestens eine Abdeckelement ist bevorzugt werkzeuglos von dem Meldergehäuse zu entfernen und auf dieses aufsetzbar.In principle, the cover element, the at least one cover flap or the at least one cover cap can be arranged on the detector housing inside or outside. Preferably, in one embodiment, the at least one cover element is arranged on the outside of the detector housing and releasably connected to the detector housing. This allows the cover, which is preferably locked to the detector housing, easily remove from the detector housing to clean the detector housing and / or the cover from contamination. The at least one cover element is preferably to be removed without tools from the detector housing and placed on this.

Das mindestens eine Abdeckelement ist vorzugsweise lösbar mit dem Stellglied koppelbar. In einer bevorzugten Ausführungsform der Erfindung koppelt sich das Abdeckelement beim Verbinden mit dem Meldergehäuse selbstständig mit dem Stellglied und entkoppelt sich von diesem automatisch beim Entfernen des Abdeckelementes von dem Meldergehäuse. Damit wird sichergestellt, dass das mindestens eine Abdeckelement im auf dem Meldergehäuse montierten Zustand mit dem Stellglied in Eingriff ist und so das mindestens eine Abdeckelement jederzeit durch das Stellglied bewegbar ist. Zudem ist dadurch gewährleistet, dass das Abdeckelement und/oder Stellglied beim Entfernen des Abdeckelementes von dem Meldergehäuse nicht beschädigt wird.The at least one cover element is preferably detachably couplable to the actuator. In a preferred embodiment of the invention, the cover element couples automatically when connecting to the detector housing with the actuator and decoupled from this automatically when removing the cover from the detector housing. This ensures that the at least one cover element in the state mounted on the detector housing is in engagement with the actuator and thus the at least one cover element can be moved at any time by the actuator. In addition, this ensures that the Cover element and / or actuator is not damaged when removing the cover from the detector housing.

Bei einer speziellen bevorzugten Variante des erfindungsgemäßen Gefahrenmelders ist das mindestens eine Abdeckelement drehbar mit dem Meldergehäuse verbunden und weist ein das mindestens eine Abdeckelement um- und/oder übergreifendes, vorzugsweise von dem Meldergehäuse abnehmbares Schutzhaubenelement auf, das im montierten Zustand unbeweglich lösbar mit dem Meldergehäuse verbunden ist, wobei das Schutzhaubenelement wenigstens eine der mindestens einen Durchlassstelle der Abdeckkappe zugeordnete Haubenausnehmung aufweist. Die wenigstens eine Haubenausnehmung ist günstigerweise an die Form der mindestens einen Durchlassstelle der Abdeckkappe angepasst. Sie kann kleiner, gleich oder größer als diese ausgebildet sein und kann optional auch mit einem Schutzgitter oder Schutzsieb versehen sein. Vorzugsweise verschließt das mindestens eine Abdeckelement in der Nichtbetriebsstellung die wenigstens eine Haubenausnehmung vollständig und gibt dieses in der Betriebsstellung zumindest teilweise frei.In a specific preferred variant of the danger detector according to the invention, the at least one cover is rotatably connected to the detector housing and has a at least one cover and / or cross-over, preferably removable from the detector housing guard element, which in the assembled state immovably releasably connected to the detector housing is, wherein the protective cover member has at least one of the at least one passage point of the cap associated hood recess. The at least one hood recess is suitably adapted to the shape of the at least one passage point of the cover cap. It may be smaller, equal or larger than these and may optionally be provided with a protective grid or protective screen. In the non-operating position, the at least one cover element preferably completely closes off the at least one hood recess and releases it at least partially in the operating position.

Bei einer bevorzugten Ausführungsform des erfindungsgemäßen Gefahrenmelders ist ein zusätzlicher Temperaturfühler außerhalb des Detektionsraumes vorgesehen, Dieser ist neben oder außen an dem Abdeckelement angeordnet und wird von dem mindestens einem Abdeckelement in der Nichtbetriebsstellung nicht abgedeckt. Damit ist zumindest in der Nichtbetriebsstellung des Abdeckelementes, vorzugsweise auch in der Betriebsstellung, die Erfassung der Temperatur der den Gefahrenmelder umgebenden Raumluft ermöglicht. Auf diese Weise kann ein Alarm ausgelöst werden, wenn die Temperatur einen festgesetzten Wert überschreitet.In a preferred embodiment of the danger detector according to the invention an additional temperature sensor is provided outside the detection space, this is arranged next to or outside of the cover and is not covered by the at least one cover in the non-operating position. Thus, at least in the non-operating position of the cover, preferably in the operating position, the detection of the temperature of the ambient air surrounding the danger detector allows. In this way, an alarm can be triggered when the temperature exceeds a set value.

Zusammengefasst bestehen die Vorteile der Erfindung gegenüber dem Stand der Technik darin, dass die zum Detektionsraum führenden Durchtrittsöffnungen sowie der Detektionsraum des Gefahrenmelders jederzeit schnell, sicher und einfach von der umgebende Raumluft isoliert und diese so vor unerwünschten Verschmutzungen geschützt werden können, wenn die Umgebungsluft stark mit Schmutzpartikeln verunreinigt ist. Um Täuschungsalarme und eine unnötige Verschmutzung zu verhindern, werden die Melder häufig durch den Betreiber der Brandmeldeanlage abgeschaltet und mit einer Staubschutzkappe versehen. Wenn die Umgebungsluft nicht mehr stark durch Schmutzpartikel verunreinigt ist, wird die Kappe abgenommen und der Melder wieder aktiviert. Dieser Vorgang ist sehr zeitintensiv und so mit hohen Kosten verbunden.In summary, the advantages of the invention over the prior art is that the leading to the detection space passages and the detection space of the hazard alarm at any time quickly, safely and easily isolated from the ambient air and this can be protected from unwanted contamination when the ambient air is heavily contaminated with dirt particles. To prevent false alarms and unnecessary contamination, the detectors are often shut down by the operator of the fire alarm system and provided with a dust cap. If the ambient air is no longer heavily contaminated by dirt particles, the cap is removed and the detector is reactivated. This process is very time-consuming and thus associated with high costs.

Ebenso häufig wird der Melder nicht durch den Betreiber, sondern durch eine unbefugte Person abgeklebt oder anderweitig manuell abgedeckt. In diesen Fällen wird häufig das Aufdecken des Melders vergessen. Mit der Erfindung kann die Abkapselung der Durchtrittsöffnungen sowie des Detektionsraums von der den Gefahrenmelder umgebenden Raumluft stets genauso schnell, sicher und einfach wieder aufgehoben werden. Die Einstellung der in den Detektionsraum eintretenden Luftmenge kann fernbedienbar vorgenommen werden, indem mindestens ein Abdeckelement, das als Abdeckklappe oder Abdeckkappe ausgebildet ist, in seiner Lage mittels einer elektrisch angetriebenen mechanisch wirkenden Stellvorrichtung zwischen einer Betriebsstellung und einer Nichtbetriebsstellung verfahrbar ist, das in der Nichtbetriebsstellung die wenigstens eine Durchtrittsöffnung zu dem Detektionsraum abdeckt und diese in der Betriebsstellung freigibt.Just as often, the detector is not masked by the operator, but by an unauthorized person or otherwise covered manually. In these cases, the detection of the detector is often forgotten. With the invention, the encapsulation of the passages and the detection space of the ambient air surrounding the hazard alarm can always be repealed just as quickly, safely and easily. The adjustment of the amount of air entering the detection space can be carried out remotely by at least one Covering element, which is designed as a cover flap or cap, in its position by means of an electrically driven mechanically acting adjusting device between an operating position and a non-operating position is movable, which covers the at least one passage opening to the detection space in the non-operating position and releases it in the operating position.

Nachfolgend wird die Erfindung anhand zweier in der Zeichnung dargestellten Ausführungsbeispiele erläutert. Weitere Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung der Ausführungsbeispiele der Erfindung in Verbindung mit den Ansprüchen und der beigefügten Zeichnung. Die offenbarten einzelnen Merkmale der Erfindung können für sich allein oder zu mehreren bei unterschiedlichen Ausführungsformen der Erfindung verwirklicht sein. Es zeigen:

Figur 1
eine Ausführungsform eines Standard-Gefahrenmelders aus dem Stand der Technik, ohne Stellvorrichtung zum Verändern des wirksamen Querschnitts der Durchtrittsöffnungen;
Figur 2
ein erstes Ausführungsbeispiel des erfindungsgemäßen Gefahrenmelders, basierend auf dem in der Figur 1 dargestellten Standard-Gefahrenmelder mit einer Stellvorrichtung, die zwei schwenkbare Abdeckklappen als Abdeckelement für die Durchtrittsöffnungen aufweist, in der Nichtbetriebsstellung des Melders;
Figur 3
den Gefahrenmelder aus Figur 2, mit den Abdeckklappen in einer Betriebsstellung des Melders;
Figur 4
den Gefahrenmelder gemäß Figur 2 in einer Schnittdarstellung;
Figur 5
den Antrieb mit Stellglied des ersten Ausführungsbeispiels des erfindungsgemäßen Gefahrenmelders;
Figur 6
ein zweites Ausführungsbeispiel des erfindungsgemäßen Gefahrenmelders, basierend auf dem in der Figur 1 dargestellten Standard-Gefahrenmelder, mit einer Stellvorrichtung, die eine drehbare Abdecckappe als Abdeckelement für die Durchtrittsöffnungen aufweist, in der Nichtgebrauchsstellung des Melders;
Figur 7
den Gefahrenmelder aus Figur 6, mit der Abdeckkappe in einer Betriebsstellung des Melders; und
Figur 8
den Antrieb mit Stellglied des zweiten Ausführungsbeispiels des erfindungsgemäßen Gefahrenmelders.
The invention will be explained with reference to two embodiments shown in the drawing. Further features of the invention will become apparent from the following description of the embodiments of the invention in conjunction with the claims and the accompanying drawings. The disclosed individual features of the invention may be practiced alone or in conjunction with various embodiments of the invention. Show it:
FIG. 1
an embodiment of a standard hazard alarm of the prior art, without adjusting device for changing the effective cross section of the passage openings;
FIG. 2
a first embodiment of the danger detector according to the invention, based on that in the FIG. 1 illustrated standard hazard detector with a locking device having two hinged cover flaps as a cover member for the passage openings, in the non-operating position of the detector;
FIG. 3
the danger detector FIG. 2 with the cover flaps in an operating position of the detector;
FIG. 4
the danger detector according to FIG. 2 in a sectional view;
FIG. 5
the drive with actuator of the first embodiment of the hazard alarm according to the invention;
FIG. 6
a second embodiment of the danger detector according to the invention, based on that in the FIG. 1 illustrated standard danger detector, with an adjusting device, which has a rotatable Abdecckappe as cover member for the passage openings, in the non-use position of the detector;
FIG. 7
the danger detector FIG. 6 , with the cap in an operating position of the detector; and
FIG. 8
the drive with actuator of the second embodiment of the danger detector according to the invention.

Die Figur 1 zeigt eine Ausführungsform eines Standard-Gefahrenmelders 1 aus dem Stand der Technik, ohne Stellvorrichtung zum Verändern des wirksamen Querschnitts der Durchtrittsöffnungen. Der Gefahrenmelder kann als Brandmelder, Rauchmelder oder Gasmelder ausgebildet sein. Der Gefahrenmelder 1 weist ein an einer Wand oder Decke eines Raumes anbringbares Meldergehäuse 2 auf, in dem mindestens ein innerer Detektionsraum, mindestens eine Sensoreinheit sowie eine Auswerte-/Steuereinheit angeordnet sind. Diese sind in der Figur 1 nicht sichtbar. Das Meldergehäuse 2 weist eine Anzahl von Durchtrittsöffnungen 3 für die umgebende Raumluft auf, die in den verdeckten Detektionsraum münden, so dass die den Gefahrenmelder 1 umgebende Raumluft in den Detektionsraum ein- und daraus austreten kann, wobei der Detektionsraum von der nicht sichtbaren Sensoreinheit detektiert wird, die beispielsweise die eingetretene Raumluft in einem optischen, chemischen oder physikalischen Verfahren überwacht. Das Meldergehäuse 2 ist zweiteilig ausgebildet und weist ein unteres Gehäuseteil 4 und ein oberes Gehäuseteil 5 auf. Das untere Gehäuseteil 4 ist zur Befestigung an einer Wand oder Decke eines Raumes vorgesehen. In dem oberen Gehäuseteil ist der Detektionsraum, die Sensoreinheit sowie die Auswerte-/Steuereinheit zusammen mit einer Signalisierungseinheit angeordnet. Der innere Detektionsraum sowie die Sensoreinheit sind in einem mittleren Gehäuseabschnitt 6 des oberen Gehäuseteils 5 angeordnet. Das obere Gehäuseteil 5 weist zwei seitliche Gehäuseabschnitte 7 auf. An einem seitlichen Gehäuseabschnitt 7 des oberen Gehäuseteils 5 sind Leuchtanzeigen 8, Anschlusselemente 9 und ein Schallgeber 10 angeordnet.The FIG. 1 shows an embodiment of a standard hazard detector 1 of the prior art, without adjusting device for changing the effective cross section of the passage openings. The hazard detector can be designed as a fire detector, smoke detector or gas detector. The hazard detector 1 has a detector housing 2 which can be attached to a wall or ceiling of a room, in which at least one inner detection space, at least one sensor unit and an evaluation / control unit are arranged. These are in the FIG. 1 not visible. The detector housing 2 has a number of passage openings 3 for the surrounding room air, which open into the concealed detection space, so that the room air surrounding the hazard detector 1 can enter and exit the detection space, the detection space being detected by the non-visible sensor unit which, for example, monitors the incoming room air in an optical, chemical or physical process. The detector housing 2 is formed in two parts and has a lower housing part 4 and an upper housing part 5. The lower housing part 4 is provided for attachment to a wall or ceiling of a room. In the upper housing part of the detection space, the sensor unit and the evaluation / control unit is arranged together with a signaling unit. The inner detection space and the sensor unit are arranged in a middle housing section 6 of the upper housing part 5. The upper housing part 5 has two lateral housing sections 7. On a side housing portion 7 of the upper housing part 5, light indicators 8, connecting elements 9 and a sounder 10 are arranged.

Die Figur 2 zeigt ein erstes Ausführungsbeispiel der Erfindung als Gefahrenmelder 11, der auf dem in der Figur 1 dargestellten Standard-Gefahrenmelder 1 basiert. Dieser weist eine Stellvorrichtung 12 mit zwei schwenkbaren Abdeckklappen 13 als Abdeckelemente 14 für die Durchtrittsöffnungen 3 des Meldergehäuses 2 auf. Die zwei Abdeckklappen 13 sind in der Figur 2 in der Nichtgebrauchsstellung des Melders 11 dargestellt. Das Abdeckelement 14 bzw. die beiden Abdeckklappen 13 der Stellvorrichtung 12 sind an dem Meldergehäuse 2 oben an den beiden seitlichen Gehäuseabschnitten 7 des oberen Gehäuseteils 5 beweglich geführt befestigt und zwischen der in der Figur 2 gezeigten Nichtbetriebsstellung und einer in der Figur 3 abgebildeten Betriebsstellung des Melders 11 durch ein in der Figur 5 dargestelltes Stellglied 27 hin und her bewegbar. In der Nichtbetriebsstellung des Gefahrenmelders 11 deckt das von den Abdeckklappen 13 gebildete Abdeckelement 14 den mittleren Gehäuseabschnitt 6 des oberen Gehäuseteils 5 vollständig ab, und isoliert so die Durchtrittsöffnungen 3 von der den Gefahrenmelder 11 umgebenden Raumluft. Somit ist ein wirksamer Schutz vor Verschmutzungen gegeben. An eines der Anschlusselemente 9 eines seitlichen Gehäuseabschnittes 7 ist eine Funkantenne 15 angeschlossen. An dem anderen zweiten seitlichen Gehäuseabschnitt 7 des oberen Gehäuseteils 5 ist zudem ein Infrarotauge 16 angeordnet. Die Funkantenne 15 und das Infrarotauge 16 sind mit einer in der Figur 5 sichtbaren Auswerte-/Steuereinheit 17 verbunden, so dass der Gefahrenmelder fernbedienbar und vorzugsweise vernetzbar ist.The FIG. 2 shows a first embodiment of the invention as a hazard detector 11, which on the in the FIG. 1 illustrated standard hazard detector 1 based. This has an adjusting device 12 with two pivotable cover flaps 13 as cover 14 for the passage openings 3 of the detector housing 2. The two cover flaps 13 are in the FIG. 2 shown in the non-use position of the detector 11. The cover 14 and the two cover flaps 13 of the adjusting device 12 are movably guided on the detector housing 2 at the top of the two lateral housing sections 7 of the upper housing part 5 and between the in the FIG. 2 shown Nichtbetriebsstellung and one in the FIG. 3 illustrated operating position of the detector 11 by a in the FIG. 5 shown actuator 27 movable back and forth. In the non-operational position of the hazard detector 11, the covering element 14 formed by the cover flaps 14 completely covers the middle housing section 6 of the upper housing part 5, thus insulating the passage openings 3 from the room air surrounding the hazard detector 11. Thus, an effective protection against contamination is given. At one of the connection elements 9 of a lateral housing section 7, a radio antenna 15 is connected. At the other second side housing portion 7 of the upper housing part 5, an infrared eye 16 is also arranged. The radio antenna 15 and the infrared eye 16 are connected to one in the FIG. 5 visible evaluation / control unit 17 connected, so that the danger detector is remotely operable and preferably networked.

Die Figur 3 zeigt den Gefahrenmelder 11 aus Figur 2 mit den Abdeckklappen 13 in einer Betriebsstellung des Melders 11. Die beiden Abdeckklappen 13 sind vollständig von dem die Durchtrittsöffnungen 3 aufweisenden mittleren Gehäuseabschnitt 6 des oberen Gehäuseteils 5 weggeklappt. In dieser Stellung kann die den Gefahrenmelder 11 umgebende Raumluft ungehindert durch die Durchtrittsöffnungen 3 in den in der Figur 4 sichtbaren Detektionsraum 18 einströmen und dort von der Sensoreinheit 19 detektiert werden. Jetzt ist deutlich ein sich zwischen den beiden seitlichen Gehäuseabschnitten 7 erstreckender Anschlagsteg 30 für die beiden Abdeckklappen 13 zu sehen, der in dem mittleren Gehäuseabschnitt 6 des oberen Gehäuseteils 5 bogenförmig erhaben verläuft. Neben den beiden Abdeckklappen 13 ist in einem der beiden seitlichen Gehäuseabschnitte 7 neben dem Infrarotauge 16 ein zusätzlicher Temperaturfühler 29 zur Erfassung der Temperatur der außerhalb des Detektionsraumes 18 befindlichen Raumluft angeordnet. Dieser kann diese Temperatur sowohl in der Betriebsstellung wie auch in der Nichtbetriebsstellung erfassen.The FIG. 3 shows the hazard detector 11 FIG. 2 with the cover flaps 13 in an operating position of the detector 11. The two cover flaps 13 are completely folded away from the central housing section 6 of the upper housing part 5 having the passage openings 3. In this position, the ambient air surrounding the hazard detector 11 unhindered by the passage openings 3 in the in the FIG. 4 Visible detection space 18 flow and are detected there by the sensor unit 19. Now is clearly seen extending between the two side housing sections 7 stop web 30 for the two cover flaps 13, which extends in the central housing portion 6 of the upper housing part 5 arcuate sublime. In addition to the two cover flaps 13, an additional temperature sensor 29 for detecting the temperature of the room air located outside of the detection space 18 is arranged in one of the two lateral housing sections 7 next to the infrared eye 16. This can detect this temperature both in the operating position as well as in the non-operating position.

Die Figur 4 zeigt den Gefahrenmelder 11 gemäß der Figur 2 in einer Schnittdarstellung. In dieser Abbildung ist der im mittleren Gehäuseabschnitt 6 des oberen Gehäuseteils 5 angeordnete Detektionsraum 18 sowie die zugehörige Sensoreinheit 19 deutlich zu erkennen.The FIG. 4 shows the hazard detector 11 according to the FIG. 2 in a sectional view. In this figure, the arranged in the central housing portion 6 of the upper housing part 5 detection space 18 and the associated sensor unit 19 can be clearly seen.

Die Figur 5 veranschaulicht den Antrieb der beiden Abdeckklappen 13 des Gefahrenmelders 11. Die beiden Abdeckklappen 13 werden unabhängig voneinander von je einem elektrischen Antriebsmotor 20 angetrieben. Dieser wird mittels der Auswerte-/Steuereinheit 17 gesteuert, die auf einer elektrischen Schaltungsleiterplatte 21 zusammen mit den Antriebsmotoren 20 in dem zweiten seitlichen Gehäuseabschnitt 7 des oberen Gehäuseteils 5 angeordnet ist. An die Schaltungsleiterplatte 21 ist das Infrarotauge 16 angeschlossen. Die beiden Abdeccklappen 13 weisen Lagerstellen 22 im Bereich der beiden seitlichen Gehäuseabschnitte 7 des oberen Gehäuseteils 5 auf. Dazu sind Lagerzapfen 23 vorgesehen, die .jeweils in einem schalenförmig ausgebildeten Lager 28 aufgenommen sind und mit einem kantigen Ende in eine mehr-eckige Aussparung der Abdeckklappen 13 eingreifen. Die Antriebsachse der beiden Antriebsmotoren 20 ist jeweils mit einem Abtriebsschneckengewinderad 24 versehen, das mit je einen auf den Lagerzapfen 23 angeordneten Antriebsritzelrad 25 kämmt. Auf diese Weise können die beiden Abdeckklappen 13 einfach von dem oberen Gehäuseteil 5 entfernt werden und auf dieses danach in einer beliebigen Stellung aufgesetzt werden. Durch das Abtriebsschneckengewinderad 24 ist keine bestimmte, insbesondere keine symmetrische Montage der beiden Verschlusskappen 13 erforderlich, da jede der Abdeckklappen 13 beim Aktivieren der Antriebsmotoren 20 auf Endanschlag fährt und damit eine definierte Stellung einnimmt, d.h. automatisch justiert wird. Des Weiteren ist an einem der seitlichen Gehäuseabschnitte 7 neben den beiden Abdeckklappen 13, vorzugsweise an dem das Infrarotauge 16 aufweisenden seitlichen Gehäuseabschnitt 7, ein zusätzlicher Temperaturfühler 29 zur Erfassung der Temperatur der den Gefahrenmelder 11 umgebenden Raumluft angeordnet. Damit wird nicht die Temperatur der Raumluft in dem Detektionsraum 18, sondern die außerhalb davon ermittelt. Der Temperaturfühler 29 wird weder in der Nichtbetriebsstellung noch in der Betreibstellung von den Abdecklappen 13 abgedeckt, sodass in beiden Stellungen die Temperatur der umgebenden Raumluft erfassbar ist.The FIG. 5 illustrates the drive of the two cover flaps 13 of the danger detector 11. The two cover flaps 13 are independently driven by an electric drive motor 20 each. This is controlled by the evaluation / control unit 17, which is arranged on an electrical circuit board 21 together with the drive motors 20 in the second lateral housing section 7 of the upper housing part 5. To the circuit board 21, the infrared eye 16 is connected. The two Abdeccklappen 13 have bearings 22 in the region of the two lateral housing sections 7 of the upper housing part 5. For this purpose, bearing journals 23 are provided, which are each received in a cup-shaped bearing 28 and engage with an angular end in a polygonal recess of the cover flaps 13. The drive axle of the two drive motors 20 is in each case provided with a driven worm drive wheel 24, which meshes with a respective drive pinion gear 25 arranged on the bearing journal 23. In this way, the two cover flaps 13 can be easily removed from the upper housing part 5 and then placed on this in any position. By the driven worm drive wheel 24 no particular, in particular no symmetrical mounting of the two caps 13 is required because each of the cover flaps 13 when activating the drive motors 20 moves to the end stop and thus occupies a defined position, that is automatically adjusted. Furthermore, on one of the lateral housing sections 7 next to the two cover flaps 13, preferably arranged on the infrared eye 16 having lateral housing portion 7, an additional temperature sensor 29 for detecting the temperature of the danger detector 11 surrounding ambient air. This does not determine the temperature of the room air in the detection space 18, but the outside thereof. The temperature sensor 29 is covered neither in the non-operating position nor in the operating position of the cover tabs 13, so that in both positions, the temperature of the ambient air is detected.

Die Figur 6 zeigt ein zweites Ausführungsbeispiel der Erfindung als Gefahrenmelder 31. Zur Vereinfachung werden für gemeinsame Elemente der beiden Gefahrenmelder 11 und 31, soweit vorhanden, die gleichen Bezugsziffern verwendet. Damit braucht auch deren Funktion nicht nochmals näher beschrieben werden. Der abgebildete Gefahrenmelder 31 weist eine Stellvorrichtung 12 mit einer drehbaren Abdeckkappe 32 als Abdeckelement 14 des Meldergehäuses 2 auf. Die Figur 6 stellt die Abdeckkappe 32 in der Nichtbetriebsstellung des Melders 31 dar. Die Abdeckkappe 32 ist drehbar mit dem Meldergehäuse 2 verbunden. Sie ist, wie die Abdeckklappe 13 des Gefahrenmelders 11, den mittleren Gehäuseabschnitt 6 außen über-und umgreifend an dem Meldergehäuse 2 angeordnet und lösbar mit dem oberen Gehäuseteil 5 des Meldergehäuse 2 verbunden. Die Abdeckkappe 32 weist ihrerseits ein die Abdeckkappe 32 um- und/oder übergreifendes Schutzhaubenelement 33 auf, das unbeweglich lösbar mit dem Meldergehäuse 2 in dessen mittleren Gehäuseabschnitt 6 des oberen Gehäuseteils 5 verbunden ist. Das Schutzhaubenelement 33 weist, wie die Figur 7 veranschaulicht, mehrere den Durchlassstellen 26 der Abdeckkappe 32 zugeordnete Haubenausnehmungen 34 auf. Diese entsprechen in ihrer Geometrie bis auf die Größe den Durchlassstellen 26 der Abdeckkappe 32. Die Abdeckkappe 32 deckt in der Nichtbetriebsstellung die Haubenausnehmungen 34 des Schutzhaubenelements 33 des Meldergehäuses 2 zumindest teilweise von innen ab. Sie verschließt diese dadurch wenigstens teilweise, vorzugsweise vollständig. Dabei verdeckt die Abdeckkappe 32 außerdem die Durchtrittsöffnungen 3 des Meldergehäuses 2 anteilig. Die Abdeckkappe 32 kann die Haubenausnehmungen 34 vollständig verschließen bzw. ganz oder teilweise freigeben. Der Gefahrenmelder 31 weist, wie der Gefahrenmelder 11, eine in der Figur nicht abgebildete Funkantenne 15, ein Infrarotauge 16 und eine Auswerte-/Steuereinheit 17 auf, über die er fernsteuerbar und vernetzbar ist. Des Weiteren befindet sich auf einem der beiden seitlichen Gehäuseabschnitte 7 neben dem Infrarotauge 16 ein zusätzlicher Temperaturfühler 29 zur Erfassung der Temperatur der Raumluft auch im Nichtbetriebszustand.The FIG. 6 shows a second embodiment of the invention as a danger detector 31. For simplicity, the same reference numerals are used for common elements of the two hazard detectors 11 and 31, if any. Thus, their function does not need to be described again. The illustrated hazard detector 31 has an adjusting device 12 with a rotatable cap 32 as a cover 14 of the detector housing 2. The FIG. 6 represents the cap 32 in the non-operational position of the detector 31. The cap 32 is rotatably connected to the detector housing 2. It is, like the cover flap 13 of the danger detector 11, the middle housing section 6 arranged outside and encompassing the detector housing 2 and releasably connected to the upper housing part 5 of the detector housing 2. The cap 32 in turn has a cover cap 32 and / or cross guard member 33 which is immovably releasably connected to the detector housing 2 in its central housing portion 6 of the upper housing part 5. The guard member 33 has, like the FIG. 7 illustrates a plurality of the passage points 26 of the cap 32 associated hood recesses 34. These correspond in their geometry to the size of the passage points 26 of the cap 32. The cap 32 covers in the non-operating position, the hood recesses 34 of the guard member 33 of the detector housing 2 at least partially from the inside. It closes this at least partially, preferably completely. The cap 32 also conceals the passage openings 3 of the detector housing 2 proportionally. The cap 32, the hood recesses 34 completely close or completely or partially free. The danger detector 31, like the danger detector 11, has a radio antenna 15 (not shown in the figure), an infrared eye 16 and an evaluation / control unit 17, via which it can be remotely controlled and networked. Furthermore, located on one of the two side housing sections 7 in addition to the infrared eye 16, an additional temperature sensor 29 for detecting the temperature of the room air in the non-operating state.

Die Figur 7 veranschaulicht den Gefahrenmelder 31 aus Figur 6, mit der Abdecckappe 32 in einer Betriebsstellung des Melders 31. In dieser Stellung fluchten die Durchlassstellen 26 der Abdeckkappe 32 mit den Haubenausnehmungen 34 des Schutzhaubenelements 33, so dass die den Gefahrenmelder 31 umgebende Raumluft durch die Durchtrittsöffnungen 3 in den inneren Detektionsraum 18 des Gefahrenmelders 31 gelangen kann.The FIG. 7 illustrates the danger detector 31 from FIG. 6 , with the Abdecckappe 32 in an operating position of the detector 31. In this position, the passages 26 of the cap 32 are aligned with the Haubenausnehmungen 34 of the guard member 33 so that the ambient air surrounding the danger detector 31 through the passage openings 3 in the inner detection space 18 of the danger detector 31st can get.

In der Figur 8 ist der Antrieb mit Stellglied 27 des Gefahrenmelders 31 abgebildet. Es ist nur ein einziger Antriebsmotor 20 vorgesehen, der ein Winkelgetriebe 35 mit einem Abtriebsritzel 36 aufweist. Zum drehenden Antrieb der Abdeckkappe 32 weist diese an einem unteren Rand 37 innen einen umlaufenden Antriebszahnkranz 38 auf. Das Schutzhaubenelement 33 ist mit dem oberen Gehäuseteil 5 des Meldergehäuses 2 lösbar verrastet und kann so auf einfache Weise von diesem entfernt und wieder mit diesem verbunden werden. Bei entferntem Schutzhaubenelement 33 kann die Abdeckkappe 32 ebenfalls von dem mittleren Gehäuseabschnitt 6 des oberen Gehäuseteils 5 abgenommen werden. Die als Abdeckelement 14 wirkende Abdeckkappe 32 koppelt beim Verbinden mit dem Meldergehäuse 2 sich selbstständig mit dem Stellglied 27 und entkoppelt sich auch automatisch von dem Stellglied 27 bei der Abnahme von dem Meldergehäuse 2.In the FIG. 8 the drive is shown with actuator 27 of the hazard detector 31. Only a single drive motor 20 is provided, which has an angle gear 35 with an output gear 36. For rotating drive of the cap 32 has this at a lower edge 37 inside a circumferential drive sprocket 38. The guard member 33 is releasably locked to the upper housing part 5 of the detector housing 2 and can be easily removed from this and connected to this again. When the protective hood element 33 is removed, the covering cap 32 can likewise be removed from the middle housing section 6 of the upper housing part 5. The cap acting as a cover 14 cap 32 couples when connecting to the detector housing 2 independently with the actuator 27 and also automatically decoupled from the actuator 27 during the removal of the detector housing. 2

Claims (12)

  1. Hazard warning device (11, 31), comprising a warning device housing (2) which can be mounted onto a wall or ceiling of a room and in which at least one interior detection space (18), at least one sensor unit (19) and an evaluation/control unit (17) are arranged, the warning device housing (2) having at least one passage (3) for the surrounding ambient air, which leads into the detection space (18) such that the ambient air can enter and exit the detection space (18), which the sensor unit (19) detects, and comprising a mechanical adjusting means (12) for changing an effective cross section of the at least one passage (3), the adjusting means (12) having at least one cover element (14) for the at least one passage (3), which cover element is fastened to the warning device housing (2) so as to be movably guided and can be moved from an operational position to a non-operational position, and vice versa, by means of an actuator (27), the cover element (14) covering the at least one passage (3) and thus encapsulating the detection space (18) from the ambient air surrounding the hazard warning device (1) in the non-operational position and clearing the at least one passage (3) in the operational position, characterised in that an electric drive motor (20) moves the actuator (27), the drive motor (20) being connected to the evaluation/control unit (17), which controls the drive motor (20) and determines the position of the at least one cover element (14) for the operational position and the non-operational position, and the evaluation/control unit (17) being remotely operable and having a wire connection, a radio-receiving module or an infrared-receiving module by means of which the drive motor (20) can be activated and deactivated.
  2. Hazard warning device according to claim 1, characterised in that the cover element (14) completely encapsulates the at least one passage (3) and the detection space (18) in the non-operational position, and at least partially clears said passage in the operational position.
  3. Hazard warning device according to either claim 1 or claim 2, characterised in that the at least one cover element (14) is pivotably connected to the warning device housing (2) and comprises at least one cover cap (13) for the at least one passage (3).
  4. Hazard warning device according to either claim 1 or claim 2, characterised in that the at least one cover element (14) is rotatably connected to the warning device housing (2) and comprises at least one cover cap (32) for the at least one passage (3).
  5. Hazard warning device according to any of the preceding claims, characterised in that the shape of the at least one cover element (14) is adapted to a contour region of the warning device housing (2) at least in portions, which region comprises the at least one passage (3).
  6. Hazard warning device according to any of the preceding claims, characterised in that the at least one cover element (14) comprises at least one passing point (26) for the surrounding ambient air that is associated with the at least one passage (3).
  7. Hazard warning device according to any of the preceding claims, characterised in that the at least one cover element (14) is arranged on the exterior of the warning device housing (2) and is releasably connected to the warning device housing (2).
  8. Hazard warning device according to any of the preceding claims, characterised in that the at least one cover element (14) can be releasably coupled to the actuator (27).
  9. Hazard warning device according to claim 8, characterised in that the cover element (14) automatically couples itself to the actuator (27) upon connecting to the warning device housing (2) and automatically decouples itself from the actuator (27) upon removal from the warning device housing (2).
  10. Hazard warning device according to any of the preceding claims 3 to 9, characterised in that the at least one cover element (14) is rotatably connected to the warning device housing (2) and comprises a protection hood element (33) that encompasses and/or overlaps the at least one cover element (14) and is rigidly and releasably connected to the warning device housing (2), the protection hood element (33) having at least one hood recess (34) associated with the at least one passing point (26) of the cover cap (32).
  11. Hazard warning device according to claim 10, characterised in that the at least one cover element (14) completely closes the at least one hood recess (34) in the non-operational position and at least partially clears said recess in the operational position.
  12. Hazard warning device according to any of the preceding claims, characterised in that a temperature probe (29) is arranged next to the at least one cover element (14), which probe measures the temperature of the ambient air surrounding the hazard warning device (1) at least when the cover element (14) is in the non-operational position.
EP17156501.3A 2017-02-16 2017-02-16 Hazard warning device with coverable air passage opening Active EP3364389B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP17156501.3A EP3364389B1 (en) 2017-02-16 2017-02-16 Hazard warning device with coverable air passage opening
HUE17156501 HUE044839T2 (en) 2017-02-16 2017-02-16 Hazard warning device with coverable air passage opening
PCT/EP2018/053071 WO2018149713A1 (en) 2017-02-16 2018-02-07 Hazard detector having a coverable air passage opening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17156501.3A EP3364389B1 (en) 2017-02-16 2017-02-16 Hazard warning device with coverable air passage opening

Publications (2)

Publication Number Publication Date
EP3364389A1 EP3364389A1 (en) 2018-08-22
EP3364389B1 true EP3364389B1 (en) 2019-04-17

Family

ID=58162436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17156501.3A Active EP3364389B1 (en) 2017-02-16 2017-02-16 Hazard warning device with coverable air passage opening

Country Status (3)

Country Link
EP (1) EP3364389B1 (en)
HU (1) HUE044839T2 (en)
WO (1) WO2018149713A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116973542A (en) * 2023-09-21 2023-10-31 山东道成泰和智能科技有限公司 High-precision five-in-one gas detector with closable probe area

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH648943A5 (en) 1980-05-09 1985-04-15 Cerberus Ag SMOKE DETECTOR.
US4540980A (en) * 1982-08-16 1985-09-10 Daniel Porco Portable security alarm
US7262705B2 (en) * 2003-08-05 2007-08-28 Back Denis L Recessed detector assembly for detecting and venting airborne substances
DE20318331U1 (en) 2003-11-25 2004-02-26 Job Lizenz Gmbh & Co. Kg Smoke alarm unit comprises a protective foil provided with a pulling strap which allows the foil to be conveniently and quickly removed
US20070171084A1 (en) * 2004-03-10 2007-07-26 Potter David E Personal safety device
DE102004029242B4 (en) 2004-06-17 2008-04-03 Job Lizenz Gmbh & Co Kg alarm Devices

Non-Patent Citations (1)

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Title
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HUE044839T2 (en) 2019-11-28
WO2018149713A1 (en) 2018-08-23
EP3364389A1 (en) 2018-08-22

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