Abstract: The invention relates to a method and a device for detecting and localizing sources of fire in one or more monitored areas (R1, . . . , Rn) utilizing a suction pipe system (3) connecting the plurality of monitored areas (R1, . . . , Rn) and which communicates with each individual monitored area (R1, . . . , Rn) by means of at least one suction opening (4), a suction device (5) for extracting air samples (6) representative of the room air of the individual monitored areas (R1, . . . , Rn) from the individual monitored areas (R1, . . . , Rn) by means of the suction pipe system (3) and the suction openings (4), and a sensor (7) for detecting at least one fire parameter in the air samples (6) extracted through the suction pipe system (3), whereby the inventive device comprises a blowing device (8) for blowing out the air samples (6) suctioned into the suction pipe system (3) when sensor (7) detects at least one fire parameter in the extracted air samples (6).

Abstract: A device for the prevention and extinguishing of fires is specified having the objective of providing an inert gas fire extinguishing system which is configured in accordance with the invention such that no breaches to ceilings or walls need be made when mounting the supply line system (4) during installation of the fire extinguishing system in a target area (1), and also having the further objective of dispensing with separate storage areas for the pressurized oxygen-displacing gas (3) used as extinguishing agent, wherein a buffer reservoir (2), the supply line system (4) and extinguishing nozzles (5) are arranged as a compact modular unit right within target area (1) itself.

Abstract: A device for determining flow parameters, particularly the temperature and flow speed and changes therein, in a fluid flow for monitoring and a fire recognition or oxygen measuring device provided with such a device are provided. A slow or sudden blockage, crack or break in a pipe system of an aspirative fire recognition device is recognized by a measurement technique, whereby an air flow sensor, operated with a constant excess temperature, is combined with a regulation algorithm, running in a microprocessor, for monitoring pipe system fluid flow or flow resistance. The required resistance of the air flow sensor can thus be calculated by an exact sensor calibration curve and a precise control loop formed. The measured values recorded by the air flow sensor are extremely reliable, such that changes in condition for the flow parameters provide information about the state of the pipe system or the intake system.

Abstract: Fire sources or gas impurities are detected and located in one or several monitoring chambers by a device having a main detector for detecting a fire characteristic value or a gas impurity, into which a part of the ambient air in the monitoring chambers is continuously injected by an intake unit through a line, arranged in each monitoring chamber and provided with intake ports. The advantages of gas inlet systems, such as an active intake and a concealed assembly, is therefore combined with the advantage of the localization of each intake port as well as the detection of a precise fire source or a precise gas impurity. To this end, the device is provided with a sub-detector, arranged on or in the area of at least one intake port per monitoring chamber, for detecting a fire characteristic value or a gas impurity. The sub-detector is capable being switched on by a switch-on signal transmitted by a controller according to a detection signal delivered by the main detector.

Abstract: The invention relates to a detector for scattered light, especially for detecting particles in a carrier medium. Said detector comprises a housing (1) and an inlet (3) and an outlet (5) in the housing (1). The carrier medium flows through the housing between said inlet and outlet and on a flow path (7). The inventive detector also comprises a light source (9) that directs light to a scattered light centre (11) which lies on the flow path (7). The inventive detector further comprises a receiver (13) for a portion of the light which is scattered onto particles in the scattered light centre (15) and a light trap (15) for light which is not scattered in the scattered light centre (11). The aim of the invention is to improve such a detector for scattered light in such a way that compact construction and high responsiveness are guaranteed. The light trap (15) can be embodied in two ways.

Abstract: A device and a method for explosive quenching of fires are indicated, for example forest and area fires. The quenching device contains two flexible hoses (1, 2) disposed next to one another and transversely to the direction of risk (5), and closable at both ends, for accommodating quenching agents, and in each case an explosive (3, 4) in or on the hoses (1, 2) atomizes the quenching agent by its ignition to form a mist, which is applied to the fire. In order to achieve a directed ejection of the quenching agent in the direction of the area of risk, the pulse (I.sub.1) which emerges from the first hose (1) facing way from the area of risk is greater than the pulse (I2) emerging from the second hose (2) facing the area of risk. For differing hose diameters, dimensioning of the quantities of explosive in relation to the diameter of the associated hose is effected taking into account the density (of the quenching agent according to a formula according to the invention.

Abstract: Disclosed is an apparatus and a method for de-icing an intake opening (2) in an intake duct (1) of a fire alarm system, through which ambient or equipment air is drawn in and supplied to a detector for sensing a fire parameter. To effectively remove an ice deposit on the intake opening (2) there is provided, in or on the intake opening (2), an elastic element having a through-hole (3) coaxial with the intake opening (2) which is adapted to be subjected to a compressed air blast in order to de-ice the intake opening (2) (FIGS. 4a to 4c).