EP4490714A1 - Vorrichtung zur branderkennung in einem fahrzeug - Google Patents
Vorrichtung zur branderkennung in einem fahrzeugInfo
- Publication number
- EP4490714A1 EP4490714A1 EP23719744.7A EP23719744A EP4490714A1 EP 4490714 A1 EP4490714 A1 EP 4490714A1 EP 23719744 A EP23719744 A EP 23719744A EP 4490714 A1 EP4490714 A1 EP 4490714A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- room
- air
- smoke detector
- air outlet
- delimiting
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
Definitions
- the invention relates to a device for fire detection in a room comprising a smoke detector with a test chamber and at least one air inlet and at least one air outlet, as well as a vehicle comprising at least one fire detection device.
- Smoke detectors for fire detection are known in various designs. They are usually arranged on a ceiling in a room to be monitored, so that smoke or fire gases rising in the room can be detected, for example optically, in a test chamber of the smoke detector and a warning signal can be issued.
- the publication DE 103 19 688 B4 teaches the arrangement of a smoke detector in an exhaust air duct of an aircraft behind a protective grille or a cover at the entrance to the exhaust air duct.
- the invention is based on the object of providing reliable fire detection in public spaces.
- the task is solved by the subject matter of independent patent claim 1. Further developments and refinements of the invention can be found in the features of the dependent patent claims.
- a device for fire detection in a room comprises a smoke detector with a test chamber and at least one air inlet and at least one air outlet, the device comprising at least one device connected to the at least one air outlet for generating a suction for air from the air outlet, so that air is expelled is sucked into the test chamber through the air inlet and discharged through the air outlet.
- the test chamber of the smoke detector is used to detect smoke or flue gases and is designed accordingly.
- the test chamber is open to at least one air inlet of the smoke detector, so that air that flows through the air inlet, in particular from the room to be monitored, reaches the test chamber.
- the test chamber is open to the at least one air outlet of the smoke detector, so that air from the test chamber can flow out of the air outlet.
- the air outlet is fluidly connected to a device for generating a suction for air at the air outlet. Air inlet and air outlet are to and from. If necessary, arranged on the test chamber in such a way that air, which is sucked in through the air inlet and discharged through the air outlet, flows through the test chamber.
- a vehicle according to the invention in particular a large-scale vehicle for, for example, public passenger transport, including land, air and water vehicles, comprises at least one device according to the invention for detecting fire in a room.
- the room can be a cabin, for example for passengers, for example a sanitary cell of the vehicle.
- the device for fire detection in a room is suitably arranged in or on the cabin.
- the device for generating a suction at the air outlet is in particular a system or a technical device and could therefore also be referred to as a device.
- the device for generating a suction for air from the air outlet includes a vacuum line - the relative pressure in the vacuum line is smaller than in the room.
- the air pressure in the room corresponds to the ambient atmospheric pressure.
- the lower relative pressure creates a suction at the air outlet.
- the vacuum line can then be used to remove air from the smoke detector.
- the vacuum line can be connected, for example, to a vacuum system of the vehicle.
- the air outlet is connected to an exhaust system of the vehicle.
- the device for generating the suction can also include one or more devices for conveying liquids, here air, for example a suitably designed and arranged fan, a suitably designed and arranged Venturi nozzle, a suitably designed and arranged pump or a suitably designed and arranged ejector, in particular a delivery ector.
- a fan, Venturi nozzle, pump or ejector can, for example, be arranged in the vacuum line, so that a negative pressure is generated between the air outlet and the fan, Venturi nozzle, pump or ejector and thus the suction for air is generated at the air outlet of the smoke detector.
- the device comprises a room-defining, for example flat, element of the room, for example a wall or ceiling of the room or a wall or ceiling cladding, for example in the form of a panel, or a cover of the smoke detector, the smoke detector being on a
- the side of the element delimiting the room facing away from the room is arranged, and wherein an opening is provided in the element delimiting the room in the area of the at least one air inlet of the smoke detector and is arranged such that at least the at least one air inlet of the smoke detector passes through the opening in
- the element delimiting the room is released towards the room for an air flow from the room and can therefore flow freely, so that air can flow from the room to the test chamber of the room sensor.
- the air outlet can then be arranged on the side of the element facing away from the room, so that air is removed from the smoke detector and thus also from the room through the air inlet into the test chamber and out of it through the air outlet.
- the test chamber of the smoke detector is arranged in an otherwise airtight housing comprising the at least one air inlet and the at least one air outlet.
- the smoke detector accordingly has a housing with the at least one air inlet and the at least one air outlet, the test chamber being arranged in the housing and the housing being designed to be airtight, apart from the air inlets and outlets.
- the test chamber can be enclosed in an airtight manner by the housing, with the at least one air inlet in the housing to the test chamber and the at least one air outlet of the test chamber.
- the fire detection device comprises a commercially available smoke detector, which is arranged on the side of the element delimiting the room facing away from the room in the area of the at least one opening in the element delimiting the room, that air from the room can flow freely through the at least one opening in the element delimiting the room to the test chamber of the smoke detector, the smoke detector being encapsulated in a casing which is connected in an airtight manner to the element delimiting the room, the at least one Opening in the element delimiting the room forms the at least one air inlet of the smoke detector and the element delimiting the room is otherwise designed to be airtight, the casing having the air outlet which is connected to the device for generating a suction for air from the air outlet, so that air from the room is sucked into the test chamber through the air inlet and discharged through the air outlet, and otherwise encloses the smoke detector in an airtight manner.
- a commercially available smoke detector which is arranged on the side of the element delimiting the room facing away from the room in the area of the at least
- the element delimiting the room for example a ceiling or wall panel, is designed to be airtight at least in the area of the envelope connected to it.
- the shell which is for example cap-shaped, and the element delimiting the space thus form the airtight housing apart from the air inlets and outlets.
- Advantages of the invention are in particular the actively effected and therefore safe flow towards the smoke detector. Even if the flow conditions in a room are unfavorable, for example in a sanitary cell of a public transport rail vehicle, which is often ventilated using fans and has a slight negative pressure compared to other passenger compartments of the rail vehicle, smoke can be safely guided to the test chamber and detected there .
- the invention also creates the possibility of hiding the smoke detector behind room-limiting elements, for example behind a false ceiling. This protects it from vandalism and also frees the cabin design from disruptive structures.
- Fig. 1 shows schematically a first embodiment of a device according to the invention for fire detection in section
- Fig. 2 shows schematically a second embodiment of a device according to the invention for fire detection in section
- Fig. 3 shows schematically a third embodiment of a device according to the invention for fire detection in section
- Fig. 4 shows schematically a fourth embodiment of a device according to the invention for fire detection in section.
- Fig. 1 shows a first embodiment of a device according to the invention for fire detection in a room 6, shown schematically in section.
- the device includes a smoke detector 1 with a test chamber 2.
- the smoke detector 1 is a commercially available smoke detector. It is arranged on a side facing away from the room 6 of an element 3 delimiting the room 6, for example a ceiling or wall paneling.
- the element 3 delimiting the room 6 has an opening for the passage of air from the room 6, the smoke detector 1 being arranged in the area of the opening in such a way that air can flow from the room 6 to the test chamber 2 of the smoke detector.
- the opening in the element 3 delimiting the room 6, for example an opening in the wall or ceiling cladding, serves here as an air inlet 12 of the smoke detector 1. This is open to room 6.
- the test chamber 2 of the smoke detector is also open to the air inlet 12, so that air can flow from the air inlet 12 to the test chamber 2.
- Air from room 6 flows freely through the air inlet 12 to the test chamber 2 of the smoke detector 1.
- the smoke detector 1 is also enclosed in an airtight, cap-shaped casing 5.
- the cap-shaped cover 5 is connected in an airtight manner to the element 3 delimiting the space 6.
- the element 3 delimiting the space 6 is also designed to be airtight, at least in the area of the casing 5.
- the smoke detector 1 is encapsulated in an airtight manner in the casing 5 and the element 3 delimiting the room 6. Shell 5 and the element 3 delimiting the space 6 could be viewed as an additional housing around the smoke detector.
- the casing 5 has an air outlet 13, which is connected to a vacuum line 4, for example a vacuum hose.
- the negative pressure in the negative pressure line 4, i.e. a relative pressure that is at least a predetermined amount lower than in the room 6, for example an ambient pressure predominantly prevailing in the room, is brought about by means of a device for generating a suction 9 for air from the air outlet 13.
- the device for generating a suction 9 is a ventilation system of an exhaust air system of a rail vehicle, which serves to extract air from the room 6 and has a suction line 8 open towards the room 6.
- the device for generating suction 9 could also be referred to as a suction device.
- the vacuum line 4 is fluidly connected to the suction line 8.
- the arrows indicate the respective air flows. This means that smoke or fire gases would also be identified by the Arrow 7, reach the smoke detector 1 safely, although air from the room 6 is also removed via the suction line 8.
- the suction line 8 and the air inlet 12 are spaced apart from one another by at least a predetermined amount.
- FIG. 2 and Fig. 3 only differ in the type of ventilation and thus in the design of the device for generating suction 9 at the air outlet 13.
- a separate fan 10 is arranged in the vacuum line 4, which provides the suction during operation.
- a delivery ejector 11 connected to the vacuum line 4, which generates the suction on the air outlet side.
- the vacuum line 4 can each end outside the room 6, for example also be led out of the rail vehicle and have an open end to the environment of the rail vehicle, through which the extracted air is released from the room into the environment.
- compressed air from a compressed air system is supplied to the delivery ejector 11 illustrated here with a Venturi nozzle and, according to the jet pump principle, generates a negative pressure on the side of the negative pressure line 4 of the air outlet 13.
- the room 6 can be a cabin or sanitary cell of a rail vehicle, which has a ventilation system to which the vacuum line 4 is connected, as in the exemplary embodiment according to FIG. 1, or it can generally be a passenger compartment, for example a compartment, of a rail vehicle and the device for generating a suction 9 can be operated separately from other ventilation systems of the vehicle and possibly independently of them, as shown in FIGS. 2 to 4 illustrated.
- Fig. 4 shows a further embodiment of the invention.
- the venting pressure is controlled by means of a delivery ejector 11, as shown in FIG. 3, generated.
- the smoke detector 1 itself has an airtight housing around the test chamber 2 with the air inlet 12 and by means of the sub- pressure line 4 with the air outlet 13 connected to the delivery ejector 11.
- the air inlet 12 of the smoke detector 1 is in turn arranged in the area of the opening of the element 3 delimiting the room 6, so that air from the room 6 is sucked into the test chamber 2 through the air inlet 12 and discharged into the vacuum line 4 through the air outlet 13.
- an air outlet open to the immediate surroundings as could be used, for example, if the relative pressure in the room is higher than outside the room, where at least the air outlet of the smoke detector, in particular the entire smoke detector, is arranged .
- the device for generating a suction would therefore create a negative pressure on the side of the element delimiting the room facing away from the room or, if necessary, in the room
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Detection Mechanisms (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022203931 | 2022-04-22 | ||
| PCT/EP2023/059792 WO2023202953A1 (de) | 2022-04-22 | 2023-04-14 | Vorrichtung zur branderkennung in einem fahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4490714A1 true EP4490714A1 (de) | 2025-01-15 |
Family
ID=86227038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23719744.7A Pending EP4490714A1 (de) | 2022-04-22 | 2023-04-14 | Vorrichtung zur branderkennung in einem fahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20250271336A1 (de) |
| EP (1) | EP4490714A1 (de) |
| WO (1) | WO2023202953A1 (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1419804A1 (de) * | 2001-07-31 | 2004-05-19 | Metro de Madrid, S.A. | Brandschutzsystem und -verfahren für mobile einheiten |
| DE102012207633A1 (de) * | 2012-05-08 | 2013-11-14 | Siemens Aktiengesellschaft | Schienenfahrzeug mit einem Ansaugrauchmelder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10319688B4 (de) | 2003-05-02 | 2007-01-11 | Airbus Deutschland Gmbh | Vorrichtung zur permanenten Überwachung eines in einem Flugzeug angeordneten Rauchdetektors |
| DE102009011846B4 (de) * | 2009-03-05 | 2015-07-30 | MaxDeTec AG | Analyseverfahren und -geräte für Fluide |
| ES2394872T3 (es) * | 2010-07-15 | 2013-02-06 | Siemens Schweiz Ag | Detección de obstrucciones e interrupciones de un detector de humo aspirado (ASD) |
| EP3907714B1 (de) * | 2020-05-08 | 2024-02-21 | Carrier Corporation | Kondensationsverhinderung in einem ansaugrauchmeldesystem |
-
2023
- 2023-04-14 US US18/858,854 patent/US20250271336A1/en active Pending
- 2023-04-14 WO PCT/EP2023/059792 patent/WO2023202953A1/de not_active Ceased
- 2023-04-14 EP EP23719744.7A patent/EP4490714A1/de active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1419804A1 (de) * | 2001-07-31 | 2004-05-19 | Metro de Madrid, S.A. | Brandschutzsystem und -verfahren für mobile einheiten |
| DE102012207633A1 (de) * | 2012-05-08 | 2013-11-14 | Siemens Aktiengesellschaft | Schienenfahrzeug mit einem Ansaugrauchmelder |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2023202953A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023202953A1 (de) | 2023-10-26 |
| US20250271336A1 (en) | 2025-08-28 |
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