DK169931B1 - Evacuation system - Google Patents

Description

in DK 169931 B1

The invention relates to an evacuation system of the kind specified in the preamble of claim 1.

Evacuation systems have the purpose in an emergency such as 5. fire or gas leak, to indicate an escape route for those in need. In the case of e.g. In the event of a fire, one or more smoke detectors will trigger signal generators whose purpose is to indicate to the distressed persons the direction of escape.

10 The evacuation systems therefore distinguish themselves from simple fire alarms in that, in addition to indicating fire alone, they also indicate a predetermined escape route for the distressed person. This means that the distressed person will be able to orientate faster so that the area of the accident can be evacuated quickly.

1 connection with e.g. fire in buildings and ships, where there is a possibility for the distressed to choose a number of alternative escape routes, the evacuation systems can have the direct opposite effect than is intended by the system.

Since these evacuation systems alone are capable of indicating one escape route, such systems will in practice cause the distressed person to be guided in a direction, e.g. is blocked by fire. Such a situation will, of course, cause the distressed person to be forced to turn around and seek alternative escape route. In addition to prolonging the evacuation time, this could, in the worst case scenario, cause further panic among those in need.

According to e.g. 6B patent applications Nos. 2,215,105 and Nos.

No. 2,223,871, it is known to use evacuation systems 35 with a plurality of detectors arranged in a fire situation to output a signal for activating a plurality of signal generators for indication of escape route. These systems further comprise control means adapted to receive signals from at least two of the detectors and, on the basis thereof, to generate control signals to at least one signal generator, for the purpose of indicating an alternative escape route.

Thus, since these systems will be able to indicate the most escape-safe escape route depending on the given fire situation, the evacuation time is significantly reduced in relation to the known systems.

However, using the systems of 6B application no. 2 215 105 and no. 2 223 871, the problem may arise, as smoke detectors are often used in such systems due to their cheap and efficient construction that the system due to the smoke distribution in the accident area in the event of a fire will be able to quickly activate all the smoke detectors in the accident area, which means that the system cannot detect the extent of the fire. In extreme cases e.g. by 20 heavy hauls through a corridor, only smoke detectors distant from the fire site may be activated and the system is cheated to indicate an incorrect escape route towards the fire site, which can cause panic situations.

25

It is therefore the object of the present invention to provide an evacuation system which, to a greater extent than the latter, ensures that only safe escape routes are indicated depending on the fire situation.

30

This is achieved by the features of claim 1, the location of the thermosensors at the exit of the escape routes ensures that only fire near these sensors is detected as these sensors do not respond to the presence of smoke around the sensor. The system is activated so that the smoke detectors and the indication of safe escape direction are controlled * by the control means as a result of the signals from the thermostat.

______________- J

3 DK 169931 B1 sorers.

An appropriate embodiment of the invention will now be described with reference to the accompanying drawings, in which: 1 is a schematic drawing of a corridor which is desired to be evacuated in case of fire; FIG. 2 shows an installation according to the invention in the part 10 of the walk area, as shown in FIG. 1 is indicated by a dotted line; FIG. 3 shows in perspective a concrete embodiment of the installation according to FIG. 2, and FIG. 4 shows a signal diagram for an evacuation system according to the invention.

In FIG. 1, a contemplated walk section is shown such as e.g.

20 may occur on board a ship. From the walk section there are four exits (A, B, C, D). In connection with e.g. In case of fire, conventional evacuation systems will indicate the direction of escape towards the nearest exit. This escape route is indicated in the figure by ascending arrows. In a thoughtful 25 situation where the fire e.g. has occurred in the area around exit A and where the fire is located so that exit A is blocked for passage, it is clearly seen from the figure that those in need in that area will be directed directly towards the fire. Of course, this could lead to 30 panic among the distressed in the heavily smoky hallway.

In FIG. 2 is an enlarged view of the section of the walking area of FIG. 1, which is framed in dotted line. An evacuation system according to the invention is installed in this section and comprises smoke detectors (1, 2) located in the corridor which, in the event of fire, any detector in the corridor, and the resulting smoke development, via a shown control unit, will activate signal transducers (3), located at the output A, and activate visual direction indicators, e.g. running lights (4, 5), located along 5 with the escape route.

In the event of a fire in the area around one of the smoke detectors (1, 2), the control unit activates the signal detectors at output A and activates the running light (4, 5) such that this indicates an escape direction towards output A, indicated in FIG. 2 with fully drawn arrows. This will cause distressed people to be directed by these signal transducers towards exit A.

15 If, on the other hand, a fire occurs in the area around output A, the thermosensor (6) will, due to the heat development in the area via signal to the control unit, cause the signal transmitters at output A to turn off and the running light (4) will change direction in the figure indicated by dashed arrows. This will cause distressed people to move away from the fire site and out of the fire zone.

FIG. 3 is a perspective view of the walking area outlined in FIG. A preferred embodiment of the invention 25 is installed, which comprises smoke detector (2), signal emitters at the output of flash light (3a), located at the floor, and a siren (3b) contained in the box (7) on the wall at the exit . The box (7) also contains the thermosensor (6) and the control means (8) necessary for controlling the system 30.

At the floor along the escape routes is a running light (4, 5). The location of the running light (4, 5) and the flash light (3a) is particularly suitable in connection with vigorous smoke generation in the accident area, as these light emitters will then be visible under the smoke. - * DK 169931 B1 5

Conveniently, according to FIG. 4 be equipped with an interconnection system (9) for communication from the accident area, which interconnects with the control device (8) so that the control means (8) extinguishes or attenuates the siren (3b) in the evacuation system when the interconnection system is in use.

A schematic signal diagram of one embodiment of the invention is shown in FIG. 4, wherein the control means (8) comprise a plurality of inputs (10) and outputs (11). Due to a signal from a smoke detector (1), the calculator generates signals for activating the signal generators, comprising e.g. a flashlight located at the exit (3a), a siren located at the exit (3b), and a running light placed along the escape route (4). If, on the other hand, the calculator receives signal from the thermosensor (6), the calculator (8) generates altered control signals to the signal transducers such that the signal transducers (3a, 3b) are switched off at the exit of the escape route and so that the running light (4) changes direction.

20

In addition, in FIG. 4 shows a signal input from a call system. On the basis of signal from the intercom, the calculator will generate control signals for the siren (3b) such that the sound output of this siren is attenuated or extinguished 25. As shown in FIG. 4 further comprises a signal output from the control means (8) to an external monitoring unit (12). Which monitoring device causes you to, e.g. from the bridge of command on a ship can follow the development of the fire.

30 35

Claims (5)

An evacuation system with a plurality of detectors comprising 5 smoke detectors (1,2) and thermosensors (6) adapted to provide, in an emergency, a signal for activating a plurality of sensors (3,4,5) for indicating escape route, further comprising control means adapted to receive signals 10 (10) from at least two of the detectors, and on the basis of these received signals to generate control signals (11) to at least one signal generator for indicating alternative escape route, characterized in that the control means are arranged to activate the signal sensors 15 (3,4,5) on the basis of received signals (10) from the smoke detectors (1,2) and to interrupt or change said signal generators (3). , 4,5) signal based on received signals (10) from one or more of the thermosensors (6), which thermosensors (6) are located at the exits of the escape routes (A, B, C, D). Evacuation system according to claim 1, characterized in that the signal generators comprise one or more visual direction indicators (4,5) located along the escape route for indicating one of several escape directions, such as a running light. Evacuation system according to claim 1 or 2, characterized in that the signal generators comprise a plurality of lights 30 and / or sound transducers (3a, 3b) located at the exit of the escape route, which lights and sound transducers are controlled via the signal of the detectors, to indicate whether the exit of the escape route is passabel. An evacuation system according to one or more of the preceding claims, characterized by further comprising an interconnection system (9) for communicating to and from the accident zone, which interconnecting signal (10) gives to the control means during use which on the basis of this received signal, control signals are generated to the audio signal generators in order to attenuate or switch them off when the communication system is in use. Evacuation system according to one or more of the preceding claims, characterized in that the control means are provided with signal outputs for connection 10 to external monitoring system (12). 15 20 25 30 35