Patent ID: 8083026
Filing Date: 2011-12-27
Classification: F01N

Abstract:
1. A muffler for attenuating acoustic noise in a gas flow, comprising: a casing having a substantially-rectangular cross-section with an inlet opening in an inlet end and an outlet opening in an outlet end, wherein a gas flow containing acoustic noise passes from the inlet opening to the outlet opening; and a V-shaped sound diffuser disposed within the casing and spanning a distance between opposing top and bottom walls of the casing, the sound diffuser comprising: 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 imperforate apex aligned with the inlet opening, each leg plate having a plurality of apertures formed therein, and wherein the imperforate apex splits an 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.