FIELD: fire-fighting equipment.
SUBSTANCE: in acoustic foam generator, which consists of hollow cylindrical shell, enveloping tip, connected with shell by diffuser from one side and by disk - from the other, tip is made acoustic and contains body, made in form of coaxial to shell cylindrical bush with two channels for air supply, in the centre of body located is rod with coaxial to body channel for supply of foam-former water solution, which comes through tube, rod cannel and at least two inclined openings onto ring site. Angle between axes of acoustic tip and inclined openings - 55°-65°. Perpendicularly to body axis placed is tube, connected with two channels for air supply. In body, coaxially to its axis, placed are throttle washer with conical and cylindrical openings and resonator washer, in which two oppositely directed air nozzles of rectangular section and at least two volume resonators are made. Washers are connected to each other and body with yoke, which is seamed in body milling.
EFFECT: increase of efficiency of foam generator, producing foam of low factor at boundary values of its operation conditions.
2 dwg
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Authors
Dates
2010-10-20—Published
2009-08-06—Filed