Nozzle apparatus for delivering fire retardant foam

Details Nozzle apparatus for delivering fire retardant foam Nozzle apparatus for delivering fire retardant foam

1998-01-16

1999-08-10

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Combining of separately supplied fluids

Liquid flow induces atmospheric air

2394195, 2394255, 239429, 169 15, B05B 706

Patent

active

059345683

ABSTRACT:
A nozzle apparatus for delivering a fire-retardant foam including a fluid delivery member having an interior passage of a given diameter, an expansion tube connected to the fluid delivery member, an agitator positioned within an interior passageway of the expansion tube and an aspiration port formed in the expansion tube. The interior passage of the fluid delivery member extends to a tapered region having a outlet orifice at a narrow end of the tapered region. The interior passage is connected to a wide end of the tapered region. The aspirator port is positioned between the outlet orifice and the agitator. The expansion tube has an interior passageway extending to an outlet opening opposite the fluid delivery member. The outlet orifice opens to the interior passageway of the expansion tube. The interior passageway has a greater diameter than a diameter of the outlet orifice. The agitator is positioned within the expansion tube so as to turbulently mix the solution with air within the interior passageway. The aspirator port allows air to enter the interior passageway of the expansion tube as the solution passes through the interior passageway of the expansion tube.

REFERENCES:
patent: 3388868 (1968-06-01), Watson et al.
patent: 4219159 (1980-08-01), Wesner
patent: 5085371 (1992-02-01), Paige
patent: 5275763 (1994-01-01), Fukai
patent: 5382389 (1995-01-01), Goodine et al.
patent: 5417371 (1995-05-01), Brackett

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