Method and apparatus for fire extinguishing

Abstract

The invention relates to the firefighting technology. The method and system according to the invention provide environmentally safe and efficient fire extinguishing by introducing into a space that is being protected a vapor, gas, and aerosol mixture that is preliminarily oxidized and cooled and that contains a solid phase with particles of 1 to 2 .mu.m, which is formed upon combustion of a pyrotechnic composition, and performing post-oxidation of the combustion products in a bed of a sorbent with an oxygen-containing oxidizer. A vapor and gas mixture is simultaneously introduced into the space that is being protected. The vapor and gas mixture is formed by desorption from the surface of a solid coolant that is saturated with a coolant as a result of indirect heat exchange with the products of combustion of the pyrotechnic composition. The oxygen-containing oxidizer may be in the form of potassium nitrate. A system is a casing with a discharge port, which accommodates a combustor that is thermally insulated from the casing walls and contains a pyrotechnic composition, an igniter, and a sorbent with an oxygen-containing oxidizer, a cooling unit located over the combustor, which is insulated against direct contact with the products of combustion of the pyrotechnic composition and has at least two coaxially extending shells that are filled with a coolant. Partition walls are provided over the shells, and a space defined between them is filled with a filtering sorbent.

Dependencies are inferred from the claim text.