The present invention provides a silencer and an upper body of a construction machine having the same. The silencer is positioned on the inner surface of a panel forming one side of an engine compartment and includes multiple plates coupled to each other to form a resonator chamber for reducing noise from the engine compartment. At least one of the plates has multiple first cavities formed along a pathway where noise passes, and the first cavities are connected with the resonator chamber. According to an embodiment of the present invention, the silencer can effectively reduce noise from an engine, a hydraulic oil pump, and a cooling fan. In particular, the silencer is effective in blocking low frequency noise using the cavities and the resonant chamber in the silencer, although the low frequency noise has high transmissivity and is difficult to block.

    소음기는 엔진룸의 일측면을 형성하기 위한 패널의 내부면 상에 구비되고, 서로 결합하여 엔진룸에서 발생된 소음을 감소시키기 위한 공명기 챔버를 형성하는 다수개의 플레이트들을 포함한다. 플레이트들 중 적어도 하나는 소음이 지나가는 경로를 따라 형성된 다수개의 제1 공동들(cavities)을 갖고, 제1 공동들은 챔버와 연통된다. 예시적인 실시예들에 따른 소음기에 의하면 엔진, 유압 펌프, 및 냉각팬에서 발생하는 소음을 효과적으로 줄일 수 있다. 특히, 저주파 소음은 투과력이 높아 효과적인 차단이 어려우나, 소음기에 포함된 공동들 및 공명기 챔버를 이용하여 효과적인 저주파 소음의 차단이 가능하다.


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    Title :

    SILENCER AND CONSTRUCTION MACHINE UPPER BDODY HAVING THE SAME


    Additional title:

    소음기 및 이를 갖는 건설기계 상부 본체


    Contributors:

    Publication date :

    2015-10-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein



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