US 12,186,606 B2
Low noise discharge nozzle
Sudarshan N. Koushik, West Hartford, CT (US); and Duane C. McCormick, Colchester, CT (US)
Assigned to KIDDE-FENWAL, LLC, Ashland, MA (US)
Appl. No. 16/972,847
Filed by KIDDE-FENWAL, INC., Ashland, MA (US)
PCT Filed Jan. 31, 2020, PCT No. PCT/US2020/016166
§ 371(c)(1), (2) Date Dec. 7, 2020,
PCT Pub. No. WO2021/154287, PCT Pub. Date Aug. 5, 2021.
Prior Publication US 2022/0355143 A1, Nov. 10, 2022
Int. Cl. A62C 31/05 (2006.01); A62C 99/00 (2010.01)
CPC A62C 31/05 (2013.01) [A62C 99/0018 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A nozzle assembly for a fire suppression system, comprising:
a body having an inlet end for receiving a flow of fire extinguishing agent from the fire suppression system at an inlet pressure;
a nozzle portion extending from the body, the nozzle portion having:
an interior cavity having an outlet end;
a center body arranged within the interior cavity adjacent the outlet end; and
a plurality of exit orifices are formed in an outer wall of the nozzle portion, in communication with the interior cavity, for vectoring the flow of fire extinguishing agent exiting therefrom and to reduce a noise level of the nozzle assembly, wherein at least a portion of the plurality of exit orifices are positioned in overlapping arrangement with the center body along a central axis of the nozzle portion and wherein an internal cross-sectional area of the interior cavity taken at any location along the central axis X-X of the nozzle portion is equal to a total open area of the plurality of exit orifices arranged downstream from that location; and
at least one perforated filter member positioned upstream from the plurality of exit orifices formed in the nozzle portion, for reducing the inlet pressure of the flow of fire extinguishing agent.