Sound suppression apparatus
AssigneeAaf Ltd.
InventorsJames Matthew Hill, Colin Alexander Malecki, Paul Timothy Williams, Mats Abom, Raymond Kirby
Life of this patent
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Abstract
A sound suppression apparatus for installation inside a gas transport duct is provided. The sound suppression apparatus comprises a resistive sound-absorbing element (110) and a housing providing a reactive sound-attenuating element (130) communicating with a surrounding of the apparatus via opening in an outer surface of the housing. An outer surface of the sound suppression apparatus comprises an outer surface of the resistive sound-absorbing element and the outer surface of the housing. A gas transport duct comprising the sound suppression apparatus is also provided.
Claims32
A sound suppression apparatus for installation inside a gas transport duct, the sound suppression apparatus comprising:
- a resistive sound-absorbing element;
- and
- a housing providing a reactive sound-attenuating element communicating with a surrounding of the apparatus via an opening in an outer surface of the housing;
- wherein:
- the sound suppression apparatus has an elongate form in a longitudinal direction from a first end of the sound suppression apparatus to a second end of the sound suppression apparatus;
- an outer surface of the sound suppression apparatus is shaped to provide aerodynamic gas flow from a first end to a second end of the sound suppression apparatus;
- the housing has a profile in a plane including the longitudinal direction which tapers in the longitudinal direction towards the second end of the sound suppression apparatus;
- the outer surface of the sound suppression apparatus comprises an outer surface of the resistive sound-absorbing element and the outer surface of the housing;
- and
- the resistive sound-absorbing element is arranged relatively closer to the first end of the sound suppression apparatus than the housing.
Dependencies are inferred from the claim text.