Silencer with internal rain diverter

F - Mech Eng,Light,Heat,Weapons – 01 – N

Patent

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Details

F01N 1/06 (2006.01) F01N 13/08 (2010.01) F01D 25/30 (2006.01) F01N 1/10 (2006.01)

Patent

CA 2349133

Disclosed herein is a silencer for reducing acoustic energy in a flow of exhaust gas from a combustion power source which prevents rain or snow from entering an Exhaust stack without the need for a weather cap or hood. The silencer achieves acoustic energy attenuation and precipitation diversion with a minimal increase in backpressure. The silencer comprises a chamber at least partially defined by a chamber wall in communication with an inlet port for introducing exhaust gas into the chamber and an exhaust port for exiting exhaust gases from the chamber. The inlet port may be in communication with an inlet collar for attachment to an exhaust stack. A housing at least partially surrounds the chamber wall to form at least one cavity between the chamber wall and the housing where acoustic absorbing material is disposed. A deflector is at least partially disposed within the chamber having a gallery portion in communication with the channel. The channel is provided for draining the contents of the gallery portion which are diverted from entering the exhaust stack. The deflector may be substantially V- shaped or have a substantial concave shape. For purposes of reducing backpressure, the deflector is substantially centered about a vertical axis of the exhaust port.

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