Silencer

• Main Authors: YAN TIANYOU, HONG WEIPING, BI CHAOHAO, ZHAO MIAO, WU BIN, DUAN FEI, ZHANG XIAOJIE
• Format: Patent
• Language: Chinese; English
• Published: 04.08.2023
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; SOUND-PRODUCING DEVICES

The silencer is provided with a first resonance part and a sound absorption material layer, the first resonance part is provided with a side wall, two bottom plates located at the two ends of the side wall and fixedly connected with the side wall and a first cavity defined by the side wall, the two bottom plates and the first cavity, and the two bottom plates are each provided with a plurality of through holes; a partition plate parallel to the bottom plate is arranged in the first cavity, and the partition plate divides the first cavity into a first chamber and a second chamber. The sound absorption material layer covers one side of the bottom plate. According to the silencer, the resonance frequency of the first resonance part can be changed by setting the parameters of the silencer, and due to the fact that the silencer is provided with the two cavities, the obvious noise reduction effect can be achieved on sounds of at least two specific frequencies. The silencer is simple in structure, the manufacturing