US 11,931,613 B2
Noise reducing fire suppression nozzles
Paul M. Johnson, Clinton, MA (US); Duane C. McCormick, Colchester, CT (US); May L. Corn, Manchester, CT (US); Sudarshan N. Koushik, West Hartford, CT (US); Mikhail Morozov, Ashland, MA (US); Changmin Cao, Pudong (CN); Christopher T. Chipman, Killingly, CT (US); and Keith A. Post, Colchester, CT (US)
Assigned to Carrier Corporation, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Aug. 16, 2021, as Appl. No. 17/403,772.
Application 17/403,772 is a division of application No. 16/182,247, filed on Nov. 6, 2018, granted, now 11,117,007.
Claims priority of provisional application 62/584,620, filed on Nov. 10, 2017.
Prior Publication US 2021/0370112 A1, Dec. 2, 2021
Int. Cl. A62C 31/05 (2006.01); A62C 5/00 (2006.01); A62C 31/02 (2006.01); B05B 1/00 (2006.01)
CPC A62C 31/05 (2013.01) [A62C 5/008 (2013.01); A62C 31/02 (2013.01); B05B 1/002 (2018.08)] 10 Claims
OG exemplary drawing
 
1. A fire suppression nozzle, comprising:
a first fluid channel configured to be in fluid communication with a first fluid having a first flow velocity;
a second fluid channel configured to be in fluid communication with a second fluid having a second flow velocity; and
a mixer disposed between the first fluid channel and the second fluid channel such that the mixer is configured to induce streamwise vorticity in at least the first fluid exiting first fluid channel to cause mixing of the first fluid and the second fluid to reduce a flow speed of a mixture of the first fluid and the second fluid,
wherein the first fluid channel is defined by a nozzle body, wherein the mixer is defined by the nozzle body or attached to the nozzle body, wherein the second fluid channel is defined at least partially by an upper shroud disposed around the nozzle body, the second fluid channel defined at least partially between the upper shroud and the nozzle body, wherein the second fluid channel is defined at least partially by a lower shroud attached to or integral with the nozzle body and/or the mixer downstream of the mixer, wherein the lower shroud and the upper shroud define an outlet of the second fluid channel therebetween where mixed first and second fluid effuse to the atmosphere, wherein the mixer is defined by a lobe mixing shape to cause both the first fluid and the second fluid to rotate together, wherein the mixer is vertically oriented such that the first fluid effuses toward the lower shroud and lobe mixes with the second fluid as it exits the first fluid channel.