Fluid sprinkling – spraying – and diffusing – Flow deflecting or rotation controlling means – Deflector and terminal flow element
Patent
1994-01-21
1995-02-28
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Flow deflecting or rotation controlling means
Deflector and terminal flow element
239498, 239504, 239524, 239590, 169 38, B05B 126
Patent
active
053929934
ABSTRACT:
A fire protection nozzle of this invention has a base defining an orifice and an inlet section defining a conduit for flow of fire-retardant fluid, leading to an upstream end of the orifice. A diffuser is supported by arms extending from the base in a position downstream of the orifice where fire-retardant fluid flowing from the inlet section emerges from the orifice in a coherent stream which impinges on the diffuser to be deflected in a spray pattern. The inlet section, in the direction of the fire-retardant fluid flow, has a cross-sectional shape of an inwardly convex curvilinear arc with a length equal to or greater than the diameter of the orifice. In a preferred embodiment, the diffuser defines two or more slots, each having a cross-sectional open area equal to at least eight percent of the total cross-sectional area of the diffuser measured in a plane transverse to the direction of fire-retardant fluid flow from the orifice.
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Grinnell Corporation
Kashnikow Andres
Trainor Christopher G.
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