Abstract: Installed at the outlet of the afterburning chamber is a diffuser whose narrow section forms a base for the afterburning chamber. The joint between the afterburning chamber and the diffuser is enclosed by a depression chamber which has a manifold with a circular slot for admitting compressed inert gas, e.g. nitrogen, from the outside. The diffuser accommodates a nozzle for feeding freon into the discharged gas flow. This increases the capacity, head and fire-fighting efficiency of the generator.

Abstract: A combustion chamber of an installation before its narrow section is made as two concentric tubes with a common vertical wall portion, featuring passages for supply of fuel and air into an annular space between the tubes. This space is sealed off at the outlet and divided by longitudinal partitions into two-way ducts with openings in the inner tube at the bottom. Relatively short partitions are preferably mounted along a helical line normal to tube surfaces to reduce the fuel-air flow resistance, resulting in higher efficiency of the installation.