The invention discloses a helmholtz muffler. The helmholtz muffler comprises a plurality of resonant cavities which are arrayed in arrays, and inserted neck parts which are arranged in the resonant cavities correspondingly, wherein all the resonant cavities are located on the same horizontal position, a partition is arranged between every two resonant cavities, the heights of the resonant cavitiesgradually increase or decrease, the lengths of the inserted neck parts gradually increase or decrease along with increase or decrease of the heights of the resonant cavities, each inserted neck partis provided with an air inlet and an air outlet, the air inlets and the bottom ends of the resonant cavities are horizontally arranged, and the air outlets keep a proper distance away from the top ends of the resonant cavities. By arranging the resonant cavities with the different heights and the inserted neck parts with the different lengths, through the resonant sound absorption action of the resonant cavities, the acoustic attenuation aim of a certain-width frequency band within a low-and-medium-frequency range can be realized.

    本公开揭示了一种赫姆霍兹型消声器,包括:多个以阵列方式排列的共振腔室以及设置于每个共振腔室内的内插颈部,其中,每个共振腔室处于同一水平位置,且每个共振腔室之间设置有隔断;每个共振腔室的高度递增或递减排列;每个内插颈部的长度随所述共振腔室的高度递增或递减排列;每个内插颈部设有进气口和排气口,所述进气口与所述共振腔室的底端水平设置,所述排气口与所述共振腔室的顶端保持合适距离。本公开通过设置不同高度的共振腔室和不同长度的内插颈部,利用共振腔室自身的共振吸声作用,能够实现中低频范围内的一定宽度频带的声衰减目标。


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    Titel :

    Helmholtz muffler


    Weitere Titelangaben:

    一种赫姆霍兹型消声器


    Beteiligte:
    WANG XIAOPENG (Autor:in) / JIANG QUANYUAN (Autor:in) / XI YANHUI (Autor:in)

    Erscheinungsdatum :

    2020-08-07


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    F16L PIPES , Rohre / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES



    Free Gas Pulsation of a Helmholtz Resonator Attached to a Thin Muffler Element

    Lai, P. C.-C. / Soedel, W. / Society of Automotive Engineers | British Library Conference Proceedings | 1998


    Free Gas Pulsation of a Helmholtz Resonator Attached to a Thin Muffler Element

    Lai, Peter C.-C. / Soedel, Werner | SAE Technical Papers | 1998


    Free gas pulsation of a Helmholtz resonator attached to a thin muffler element

    Lai,P.C. / Soedel,W. / Copeland,US et al. | Kraftfahrwesen | 1998


    MUFFLER

    ANDERSON MORRIS G / SINHA SWARNA / BROWN DANIEL | Europäisches Patentamt | 2023

    Freier Zugriff

    MUFFLER

    KAINUMA KATSUHIKO / KAJIKAWA MASAHIRO | Europäisches Patentamt | 2015

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