Diffuser muffler

Details Diffuser muffler Diffuser muffler

2010-06-07

2011-12-27

Phillips, Forrest M (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S212000, C181S228000, C181S229000, C181S240000, C181S268000

Reexamination Certificate

active

08083026

ABSTRACT:
A muffler for attenuating acoustic noise in a gas flow that includes a casing having a substantially-rectangular cross-section with an inlet opening in an inlet end and an outlet opening in an outlet end, so that a gas flow containing acoustic noise passes from the inlet opening to the outlet opening. The muffler also includes a V-shaped sound diffuser disposed within the casing and spanning the distance between opposing top and bottom walls of the casing. The sound diffuser comprises a pair of elongate leg plates having base ends attached to the outlet end on opposite sides of the outlet opening, and tip ends merged into an apex that is aligned with the inlet opening. Each leg plate has a plurality of apertures formed therein, and the apex splits the inlet gas flow into two side flows, with each side flow passing through the plurality of apertures in one of the leg plates to reach the outlet opening.

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