Other

Asea Brown Boveri Ag

Minimax Gmbh & Co Kg

Manfred Russwurm

Frederic Aebischer

Hauke Dittmer

Bernd Ziems

Kurt Lenkeit

Torsten Westphal

Thomas Mendle

Olaf Klischat

Manfred Guderjan

Bernd Dipl-Ing Ziems

Thilo Lindau

Hauke Dipl-Ing Dittmer

Thilo Dipl-Ing Lindau

Thorsten Dipl-Ing Westphal

A method for fire detection in enclosed environments () subject to explosion protection regulations out of which an air-dust mixture is filtered while the concentration of dust of the air-dust mixture is lowered to under the explosion limit by a filter () and the aspirated air-dust mixture is checked for burning characteristics and if appropriate a fire alarm is triggered, in which the function of the filter () is monitored, the fire detection is carried out by use of an aspirating smoke detector system () not approved for use in potentially explosive areas but instead is deployed outside the ex-zone and if the filter () is destroyed a signal processing unit () of a malfunction monitoring sensor () generates a signal which initiates a subsequent action preventing aspirated air-dust mixture with an elevated concentration of dust from entering the aspirating smoke detector system ().

Method and device for fire detection in enclosed environments

A process and a device for atomization of a liquid extinguishing medium, in which the liquid extinguishing medium and a liquid inert gas are mixed in a mixing unit to form a liquid extinguishing medium mixture. The mixture is conveyed through a conduit to a distributing device such as extinguishing nozzles. As the mixture exits the distributing device the mixture is atomized, forming an aerosol spray for extinguishing a fire within an extinguishing area defined by the aerosol spray. A detector arranged in the extinguishing area for detection of parameters relating to extinguishing of the fire is connected to an evaluation device which in turn is connected to a control valve. The control valve regulates the quantity of liquid inert gas supplied to the mixing unit.

Process and device for atomizing liquid extinguishing agents in stationary extinguishing installations

A device for introducing CO.sub.2 into a preferably liquid extinguishing medium includes a housing (1) with a feed line (2) for extinguishing fluid, a feed pipe (4), provided with a metering valve (3), for CO.sub.2, as well as an outlet line (5). The housing (1) is aligned with its longitudinal axis vertical; the feed line (2) for extinguishing fluid is connected to the housing at the lower end thereof; the outlet line (5) branches off from the upper end of the housing. The CO.sub.2 feed pipe (4) opens into the housing from above, extends as far as the lower end thereof and is provided at the pipe end with injection fluid (6). The CO.sub.2 is directed in the feed pipe in the opposite flow direction to the extinguishing fluid; the length of the feed pipe between the metering valve (3) and injection fluid (6) is dimensioned such that during operation with the metering valve (3) closed a gas cushion (7) forms on its downstream side.

Mixing device for fluids

Growing community of inventors

Bad Schwartau, Germany

Manfred Russwurm