METHOD OF EXTRACTING FOAMING AGENT SOLUTION FROM FIRE EXTINGUISHER FOR SPACECRAFT AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2016 - IPC A62C13/72 

FIELD: fire safety.

SUBSTANCE: invention relates to portable water-foam fire extinguishers, mainly for manned spacecraft. Method of extracting a foaming agent solution from a fire extinguisher cylinder means separation of gas-liquid phases. Propellant gas and the solution are stored separately, and the solution is extracted without application of a movable structural element under the action of gas pressure in gas-filled foam. Foam is formed in the fire extinguisher cylinder by mixing and foaming the solution with jets of the propellent gas prior to the solution supply from the cylinder. Proposed method is implemented with a fire extinguisher, which comprises a cylinder with a foaming agent solution, a propellant gas source and starter for the gas supply into the cylinder, a locking element for the foaming agent solution supply, a sprayer and/or a foam generator. Cylinder is shaped as a ball, and holes for the gas supply into the cylinder with the foaming agent solution are located in one of the hemispheres of the cylinder and are oriented so, that jets of the propellant gas are directed along the inner surface of the ball.

EFFECT: intensive mixing of gas-liquid phases together with simplified design of the fire extinguisher and significant reduction of its weight.

2 cl, 3 dwg