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US 5,760,349 AGranted
Acoustic absorber having a slotted horn arranged in a pot
AssigneeDornier GmbH
InventorsIngo U. Borchers, Stephan T. Laemmlein, Peter Bartels
Life of this patent
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Abstract
An acoustic absorber is made of a pot-shaped lower part with a pot bottom and side wall as well as an upper part having a horn. The horn projects into the bottom part and tapers in the direction of the pot bottom. Undesired noise is effectively reduced by the absorber. A relatively broadband, and at a given size, a relatively low-frequency absorption effect is achieved that is capable of protecting human hearing from injury or reducing the impact of noise such as on technical equipment and components.
Claims19
An acoustic absorber, comprising
- a pot having a pot-shaped lower part with a pot bottom, and a side wall;
- and
- a horn arranged in said pot, said horn projecting into the pot-shaped lower part and tapering in a direction toward the pot bottoms;
- slots provided in a wall of the horn in a vicinity of a narrower tapered open end of the horn, said narrower tapered open end of the horn being located at a predetermined distance from said pot bottom.
1 more element
A sound-absorbent shroud, comprising:
- a shroud having an inner surface and an outer surface, said inner surface being arrangeable to face a noise generating source;
- a plurality of acoustic absorbers arranged continuously on said inner surface of said shroud so as to face the noise generating source when in use;
- each of said plurality of acoustic absorbers comprising a pot having a pot-shaped lower part with a pot bottom and a side wall, and a horn arranged in said pot, said horn projecting into the pot-shaped lower part and tapering in a direction toward the pot bottom, and slots provided in a wall of the horn in a vicinity of a narrower tapered open end of the horn, said narrower tapered open end of the horn being located at a predetermined distance from said pot bottom.
Dependencies are inferred from the claim text.