Mixing chamber for producing compressed air foam for fire extinguishing devices has internal contour narrowing preferably conical towards compressed air foam outlet for better foam production

摘要

The mixing chamber (10) has a compressed air inlet (12), an extinguishing agent inlet (11) and a compressed air foam outlet (13). The internal contour of the mixing chamber narrows towards the compressed air foam outlet and is preferably conical so that the compressed air inlet and extinguishing inlet open into the bottom of the conical inner contour and the foam outlet is at the tip. The internal diameter of the extinguishing agent inlet is the same as that of the compressed air foam outlet. Independent claim describes fire extinguishing device with connector to compressed air source and mixing chamber.