Patent · US Active

Acoustic resonator

US11674481B2 · kind B2 · utility

0Cited by

0References

11Claims

0Family size

Assignee

AKWEL · FR

Inventors

Pascal Guerry · Audincourt, FR
Adrien Eustache · Port, FR
Michel Robinault · Nantes, FR

Key dates

Filing date	Feb 5, 2020
Grant date	Jun 13, 2023
Priority date	—
Expiry date	Nov 17, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The resonator is configured to attenuate the noise in a duct delimiting an internal channel for the flow of a fluid according to a reference axis, of the type including an annular compartment configured to extend around the channel and provided with at least one orifice forming a neck for communication with the flow channel so as to form a resonance chamber. Accordingly, the compartment has an inner structure with a geometry shaped so as to produce a revolution annular asymmetry of the resonance chamber about the reference axis, adapted to generate a phase shift of an acoustic pressure wave reflected inside the chamber relative to an acoustic pressure wave incident from the main flow.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.