A device, such as a fan, an air conditioner, a space heater, an air cleaning or filtration device, or an air freshener, includes an airflow generator 108 and an elongate plenum 110 configured to receive airflow generated by the airflow generator 108; An outlet (112, Fig. 2) extends along at least part of the plenum 110, such that the airflow passing through the plenum 110 exits the outlet (112, Fig. 2); The device includes at least one Helmholtz resonator 114 having an inlet port 116 and a cavity 118, the inlet port 116 being in fluid communication with the plenum 110 at a position that is on the other side of the outlet (112, Fig. 2) relative to the airflow generator 108; The plenum 110 and Helmholtz resonator 114 are arranged and configured to reduce the noise generated by device around at least one frequency while reducing the effect of the resonator 114 on airflow to the outlet.


    Access

    Download


    Export, share and cite



    Title :

    Device with Helmholtz resonator


    Publication date :

    2023-08-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English



    Helmholtz-Resonator-Liner

    KNOBLOCH KARSTEN / ENGHARDT LARS / SARRADJ ENNES et al. | European Patent Office | 2021

    Free access

    Helmholtz-Resonator für ein Kraftfahrzeug sowie Kraftfahrzeug mit einem Helmholtz-Resonator

    SCHRANK SEBASTIAN / PLAKOLB CHRISTIAN | European Patent Office | 2022

    Free access

    Helmholtz Resonator Liner with Flexible Walls

    Knobloch, Karsten / Enghardt, Lars / Bake, Friedrich | AIAA | 2018


    HELMHOLTZ RESONATOR FOR VEHICLE WHEEL

    JUNG JAE SUNG / JANG YOUNG SEOK | European Patent Office | 2020

    Free access

    Multi-frequency Helmholtz resonator system

    SANDIFORD A DAVID | European Patent Office | 2024

    Free access