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US 2021/0063048 A1Published application
Sound reduction grille assembly
AssigneeBroan-NuTone LLC
InventorsPatrick Bouche, Raymond Panneton, Brent Lillesand, Jean-Bernard Piaud, Rick Sinur
Life of this patent
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Abstract
A ventilation assembly and methods of forming the same includes a ventilation grille having reducing acoustic bodies configured to attenuate sound of the ventilation assembly. Arrangement of the acoustic bodies can form phononic crystal to attenuate sound and can be tuned to desired sound bands to reduce sounds.
Claims28
A ventilation assembly comprising:
- a main housing defining an inlet through which air can be received into the main housing and defining an outlet;
- a blower in the main housing and operable to generate a flow of air;
- and
- a grille configured to be located adjacent to the main housing inlet, the grille having a means for reducing sound.
1 more element
A ventilation assembly comprising:
- a main housing defining an inlet through which air can be received into the main housing and defining an outlet;
- a blower situated in the main housing and operable to generate a flow of air;
- and
- a grille configured to be located adjacent to the inlet of the main housing, the grille comprising
- a first plate defining a grille outlet aperture;
- a second plate spaced from the first plate;
- a plurality of acoustic bodies arranged about the grille outlet aperture, each acoustic body extending from one of the first plate and the second plate.
4 more elements
A ventilation grille comprising:
- a first plate defining a grille outlet aperture;
- and
- a plurality of acoustic fixtures extending from the first plate and arranged about the grille outlet aperture, each of acoustic fixtures comprising at least two acoustic bodies defining at least one phononic crystal to attenuate sound.
Dependencies are inferred from the claim text.