EP0861480B1 - Smoke-screen device for obscuring premises - Google Patents

Abstract

PCT No. PCT/DE96/02114 Sec. 371 Date Oct. 5, 1998 Sec. 102(e) Date Oct. 5, 1998 PCT Filed Nov. 6, 1996 PCT Pub. No. WO97/18373 PCT Pub. Date May 22, 1997A smoke screen device for rooms includes a container to hold a smoke fluid that produces smoke when vaporized, a heating device for heating and vaporizing the smoke fluid, and an opening in the container that allows the smoke to be given off into the open. The heating device is a pyrotechnic heating cartridge having a heating agent, a pyrotechnic detonating agent, and a casing that encloses the heating agent and detonating agent. Heat produced during combustion of the heating agent is given off onto the smoke fluid through a wall of the casing. A pressure cartridge including a compression agent and a pyrotechnic detonating device is provided in the container to support propulsion of the smoke produced. The pyrotechnic detonating device may be electrically ignitable via an electrical cable coupled to an energy supply and sensory mechanism which themselves are connected to an alarm, so that when tripped, the alarm causes the detonating device to be ignited. The pyrotechnic compression agent and the heating agent may be contained in a common casing.

Description

The invention relates to a device for atomizing of spaces and should in particular be used to Burglars in closed rooms take their view and take them to panic so that your intent, Objects to be stolen are taken away. The trigger such devices can be replaced by a conventional one Alarm system or other suitable means. With the The device can of course still be triggered further alarm systems are put into operation, so that the Owner or the police if necessary Take countermeasures against the burglar (s).

Such a device is known from DE-A1-43 28 697. This system has a distributor that obscures the view Fog spread explosively. As the basis for the generation of the Known components can be used as they are be used with fog grenades. Is assumed natural that these agents are non-toxic, so that Health damage can be excluded.

It is a compact device for nebulizing rooms also known in a container a mixture of water and Glycol absorb that to nebulize the room from strong Heating tubes to several hundred degrees within seconds Celsius is heated. This process creates dense Clouds of fog, so that a burglar within a very short time completely lost orientation in a room. For this However, the device is a significant power supply required; of course this entails the risk that Power failure the nebulization does not take place.

The invention has for its object a simple built device to create that essentially is independent of a power supply and for triggering e.g. simply connected to an existing alarm system can.

This object is according to the invention by the features of Claim 1 solved.

The essential idea of the invention is therefore the active parts of the device used for nebulization are essential to train as pyrotechnic phrases that can be activated independently from a power supply can. All you have to do is activate a small squib, to supply a small battery or the connector to the sensors of an alarm device is sufficient.

With a suitable design of the heating cartridge, the one at Heating and evaporating the mixture to produce the Fog generated pressure should be sufficient to clear the fog to exude an opening with a valve from the container. However, it is advantageous to add another pyrotechnic Arrange pressure set in the container, which is synchronized with the or later than the heating element is ignited and the at Burning developed according to propellant gases. These propellants flow into the container via a connection and generate there the pressure sufficient for the mist to flow out. The pressure set can be in the same housing as the heating set be included or integrated into this. This one too Print set is preferably a pyrotechnic set.

Fig. 1 einen Längsschnitt durch eine Vorrichtung zum Vernebeln von Räumen gemäß der Erfindung;

Fig. 2 bis 4 jeweils einen Schnitt durch ein weiteres Ausführungsbeispiel einer solchen Vorrichtung.

Further embodiments of the invention emerge from the subclaims. The invention is explained in more detail in exemplary embodiments with reference to the drawing. In this represent:

1 shows a longitudinal section through a device for atomizing rooms according to the invention.

2 to 4 each show a section through a further embodiment of such a device.

A device 1 for nebulizing rooms has according to FIG. 1 an outer housing 2 in which a container 3 for receiving a fog fluid 4 is stored. This fog fluid 4 is e.g. a mixture of water and glycol and fills the container in this case up to half. Executes in fluid-free space the container a channel 5, which in the container through a Rupture disc 6 is complete. This channel also penetrates the housing 2 and opens outside the housing 2 in a nozzle 7.

A protrudes into the fog fluid 4 from the side of the container 3 pyrotechnic heating cartridge 8, the heating set 9 and one pyrotechnic squib 10 which is in a solid gas and pressure-tight jacket 11 are added. The pyrotechnic Squib 10 may e.g. ignited electrically via a cable 12 be from the squib 10 to a sensor and Energy supply 13 leads.

A print cartridge protrudes into the fluid-free space of the container 3 14 into it, which a printing set 15 and a pyrotechnic Has squib 16, which is accommodated in a container 17 are. The pyrotechnic squib 16 may e.g. in turn can be ignited electrically via a cable 18, which of the Primer to the sensors and power supply 13 leads.

The sensors and power supply 13 receive e.g. from one Alarm system an activation signal when a break-in was found. The sensors and power supply 13 can e.g. a little electric battery and a little logic obtained that controls the function of the device. The Function is as follows:

As soon as the sensors and power supply 13 Activation signal received by the alarm system is a electrical impulse via the cable 12 to the pyrotechnic Primer 10 of the pyrotechnic heating cartridge 8 sent. This ignites the heating element, which is relatively quick burns. About the jacket 11 is generated during the combustion Heat emitted to the fog fluid 4, which is very fast is heated and evaporated. Once the vapor pressure is within the Container is large enough, the rupture disc 6 is destroyed, so that the mist emerges through the channel 5 and the nozzle 7 and quickly fog up the space to be protected.

If the generated by the evaporation of the fog fluid Gas pressure inside the tank is not sufficient to control the Destroy rupture disc 6 and the mist to the outside drive, is either simultaneously with the pyrotechnic Primer 10 or delayed - depending on the one for vaporization of the fog fluid 4 necessary time period - the pyrotechnic Primer 16 of the pressure set 15 ignited. The outer wall of the Print cartridge 14 is destroyed during ignition, so that the the combustion of the pressure set 15 liberated propellant gases in the Container 13 are released. In this increases accordingly the internal pressure on, so that the rupture disc 6 is destroyed and the evaporated fog fluid is expelled.

2 and 3, only the inner container 3 is one varied embodiment of a device for nebulizing Represented spaces. A fog fluid 4 is in the container 3 filled in; there are also a plurality of pyrotechnic heating cartridges 8 available, in this case four cartridges. One of these However, cartridges can also be a print cartridge. It is the same possible that the individual heating cartridges both one pyrotechnic heating set 9 as well as a printing set 15 have, as this is shown schematically in Fig. 3. The heating cartridge 9 is here again through a jacket 11 encapsulated, so that no gases after the heating set burns give way on the outside. The two sentences are in this Embodiment preferably ignited one after the other, the Heating set 15 is only ignited when the fog fluid 4 is already in vapor form. As soon as the internal pressure in the Container is high enough, the rupture disc 6 at the end of Channel 5 destroyed, so that the mist from the container be pushed out.

4 are the pyrotechnic Pressure set 15 and the pyrotechnic heating set 9 in one common housing added. The jacket 11 of the heating set can be gas-tight as in other exemplary embodiments. The Outlets 42 in the jacket 17 of the pressure set can through Bursting foils 41 are closed. The housing 10 is in one Container 3 arranged, which is filled with a fog fluid 14 and is provided with an outlet 5 through a rupture disk 6 is closed.

The advantages of the devices described over conventional methods include those based on Triggering extremely fast functionality, depending on Execution of the fog in a period between 3 and 20 seconds can be released. There are none pyrotechnic gases or no smoke, as with this Device normal fog fluid, as it is in electrical Fog machines are used. The Device is inexpensive to manufacture because of the structure compared to other e.g. used in stage shows etc. electrical devices is very simple. Another advantage is that after activation of the device, its function can no longer be stopped, i.e. it is self-sufficient Working method before. The device is very simple any alarm system can be connected. Besides, it is easy to maintain, since no wearing parts are installed. Uncomplicated technology makes it reliable Working method guaranteed. The device itself is under Extreme conditions can be used, e.g. in heavily polluted Clearing, and is insensitive to heat and cold.

Claims (10)

1. Device for filling rooms with vapour, having a tank for accommodating a vaporisation fluid which generates vapour upon being evaporated, a heating device for heating and evaporating the vaporisation fluid, and an opening in the tank from which the vapour is able to escape to the outside,
   characterised in that the heating device is a pyrotechnic heating cartridge (8) having a heating composition (9), a pyrotechnic ignition means (10), and a casing (11) which encapsulates the heating composition and the ignition means and via the wall of which the heat generated as the heating composition burns up is transmitted to the vaporisation fluid.
2. Device according to claim 1, characterised in that the casing (11) of the pyrotechnic heating cartridge (8) is gas-tight and pressure-tight.
3. Device according to claim 1 or 2, characterised in that the pyrotechnic heating cartridge (8) is immersed in the vaporisation fluid (4).
4. Device according to any of the preceding claims, characterised in that the ignition means (10) for the pyrotechnic heating composition (9) is a pyrotechnic primer cap (10).
5. Device according to claim 4, characterised in that the pyrotechnic primer cap (10) is adapted to be ignited electrically.
6. Device according to any of the preceding claims, characterised in that provided in the tank (3) is a compression cartridge (14) to help the vapour generated to be expelled.
7. Device according to claim 6, characterised in that the compression cartridge (14) contains a pyrotechnic compression composition (15) and a pyrotechnic ignition means (16) therefor.
8. Device according to claim 7, characterised in that the pyrotechnic ignition means (16) is adapted to be ignited electrically.
9. Device according to any of the preceding claims, characterised by the provision of a sensor system and power supply (13) for igniting the pyrotechnic compositions.
10. Device according to claim 9, characterised in that the sensor system and power supply (13) is linked to an alarm installation.

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