초록 ▼

Noise attenuator apparatus for use on a noise source including an exhaust inlet assembly using sound attenuators being equal to the exhaust pressure needs of the noise source whereby the sum total area of all smaller openings of the attenuators is equal to the exhaust volume needs of the noise sourc

Noise attenuator apparatus for use on a noise source including an exhaust inlet assembly using sound attenuators being equal to the exhaust pressure needs of the noise source whereby the sum total area of all smaller openings of the attenuators is equal to the exhaust volume needs of the noise source. Surrounding the inner or primary assembly, a sealed partition of any dimension containing an inner chamber which allows for the release of exhaust gas through any number of attenuators of which the smallest exit openings are equal to the exhaust volume needs of a noise source divided by the actual number of sound attenuators. The preceding assembly contained within this secondary chamber being contained or shrouded by an outer casing made from any number of plates or curved pieces whereby the primary and secondary chambers being contained by an outer casing through which the exhaust gas exits by way of measured openings or attenuators.

대표청구항 ▼

[ I claim:] [1.] A noise attenuating apparatus comprising:(a) a shroud;(b) a first chamber formed in said shroud at least by a first chamber wall mounted within said shroud and having inlet means in communication therewith for receiving a fluid flow into said first chamber;(c) a second chamber forme

[ I claim:] [1.] A noise attenuating apparatus comprising:(a) a shroud;(b) a first chamber formed in said shroud at least by a first chamber wall mounted within said shroud and having inlet means in communication therewith for receiving a fluid flow into said first chamber;(c) a second chamber formed by said shroud and at least a portion of said first chamber wall of the first chamber, said noise attenuating apparatus having outlet means defining a passage in communication with said second chamber for communicating said second chamber with the ambient environment; and(d) communicating means extending through said first chamber wall for providing communication between said first chamber and said second chamber for passage of the fluid flow from said inlet means to said second chamber, wherein said communicating means comprise a plurality of sound attenuators connected to said first chamber wall so as to project therefrom, wherein each said sound attenuator has a longitudinal passage therethrough that is defined by an interior surface and extends between a first orifice nearest said inlet means which receives the fluid flow from said inlet means and a second orifice farthest away from said inlet means from which the fluid flow passes into said second chamber, each said sound attenuator being tapered so as to narrow from said first orifice to said second orifice wherein the size of said first orifice in each said sound attenuator is greater than the size of said second orifice in each said sound attenuators said interior surface being substantially imperforate and elongate so that sound waves are reflected by said interior surface to effect destructive resistance of said sound waves during passage therethrough from said first chamber to said second chamber.