HELMHOLTZ RESONANCE MUFFLING UNIT BASED ON LABYRINTH STRUCTURE, AND RESONANCE MUFFLER

WIPO Patent Application WO/2018/094959

A1

A Helmholtz resonance muffling unit based on a labyrinth structure, and a resonance muffler. The Helmholtz resonance muffling unit based on a labyrinth structure comprises a pipe body (1), a connection tube (3) connected to the pipe body (1), and a labyrinth cavity (4) which is in communication with the connection tube (3), a sound wave incident end of the labyrinth cavity (4) being in communication with the connection tube; the resonance cavity structure can lower the phonon forbidden band height, and can eliminate wide and low frequency noise while occupying a smaller space volume compared to a traditional Helmholtz resonance cavity. The resonance muffler (6) comprises a Helmholtz resonance muffling unit based on a labyrinth structure.

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LAI YUN (CN)
LIU CHENKAI (CN)

PCT/CN2017/081098

May 31, 2018

April 19, 2017

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SOOCHOW UNIV ZHANGJIAGANG INSTITUTE OF INDUSTRIAL TECHNOLOGIES (CN)

F16L55/033

CN106382432A	2017-02-08
DE102008061070A1	2009-07-09
DE102005032319A1	2007-01-18
JPH08240202A	1996-09-17
CN204026027U	2014-12-17
CN204436550U	2015-07-01
CN205001751U	2016-01-27

WISEAST INTELLECTUAL PROPERTY LAW FIRM (CN)

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