US 12,283,262 B2
Tunable silencer for air handling unit
Rajavel Balaguru, New Cumberland, PA (US); Paul F. Bauch, York, PA (US); and Roger Lee Howard, Seven Valleys, PA (US)
Assigned to Tyco Fire & Security GmbH, Neuhausen am Rheinfall (CH)
Filed by Air Distribution Technologies IP, LLC, Milwaukee, WI (US)
Filed on Jun. 23, 2022, as Appl. No. 17/848,166.
Claims priority of provisional application 63/214,655, filed on Jun. 24, 2021.
Prior Publication US 2022/0415298 A1, Dec. 29, 2022
Int. Cl. G10K 11/162 (2006.01); F24F 13/24 (2006.01); G10K 11/172 (2006.01)
CPC G10K 11/162 (2013.01) [G10K 11/172 (2013.01); F24F 2013/242 (2013.01); F24F 2013/245 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A silencer module for an air handling unit, comprising:
a first baffle comprising a first plurality of panels defining a first interior volume of the first baffle and a first outer perimeter of the first baffle;
a second baffle spaced apart from the first baffle to form an air channel between the first baffle and the second baffle, wherein the air channel is configured to receive a fluid flow and direct the fluid flow through the silencer module; and
a reactive acoustic feature formed in the first baffle within the first outer perimeter of the first baffle, wherein the reactive acoustic feature comprises an attenuation profile configured to reduce propagation of tonal acoustic waves through the air channel, and the reactive acoustic feature is separated from the first interior volume via a first plurality of walls of the first baffle.