US 11,731,770 B2
Dual-flow nozzle for dispersing a high-pressure fluid and a low-pressure fluid
Rachel Darr, Renton, WA (US); and Charles Steven Meis, Renton, WA (US)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Jul. 29, 2019, as Appl. No. 16/524,409.
Prior Publication US 2021/0031931 A1, Feb. 4, 2021
Int. Cl. B64D 25/00 (2006.01); A62C 3/08 (2006.01); B05B 1/30 (2006.01)
CPC B64D 25/00 (2013.01) [A62C 3/08 (2013.01); B05B 1/3006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A nozzle configured to receive and disperse a suppression agent at either a knock-down discharge mode or at a metering discharge mode, wherein the nozzle comprises:
a nozzle body defining an open end, a closed end, and a side wall connecting the open end to the closed end, the open end of the nozzle body configured to receive the suppression agent at either the knock-down discharge mode or at the metering discharge mode, wherein the side wall defines:
a plurality of low-pressure apertures;
a plurality of high-pressure apertures positioned downstream from the plurality of low-pressure apertures, wherein the low-pressure apertures are smaller in size by a predetermined ratio when compared to the high-pressure apertures; and
a compressible member positioned within the nozzle body, wherein the compressible member is in an expanded position and blocks the plurality of high-pressure apertures when the open end of the nozzle body receives the suppression agent at the metering discharge mode, and wherein the compressible member is configured to compress into a constricted position in response to the open end of the nozzle body receiving the suppression agent in the knock-down discharge mode, and wherein the predetermined ratio is sized to result in the suppression agent fully flashing to gas when exiting the nozzle.