Patent ID: 9618151
Date: 2017-04-11
CPC Classifications: F01N,F16L,F24F

Claim:
1. An acoustic silencer comprising: an expansion chamber having an enclosed volume; a process pipe extending continuously through said enclosed volume; an annular volume defined within said enclosed volume between said expansion chamber and said process pipe along an entire length of the process pipe that extends through said expansion chamber; an insert disposed within said annular volume and extending along the length of the process pipe that extends through said expansion chamber; said insert defining an acoustic volume between said insert and said expansion chamber; said insert defining a resonate passage length within said acoustic volume, wherein said resonate passage length is of a length so as to dampen one or more frequencies of said process pipe; an opening through said process pipe along the length of the process pipe that extends through said expansion chamber, said opening extending over less than a circumference of said process pipe, and said opening in fluidic communication with said acoustic volume; and wherein said insert is a C-type insert.