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风机噪声的控制控制风机噪声有以下四种基本方法:(1)通过结构的设计减少噪声的产生;(2)安装消声器吸收已产生的噪声;(3)安装隔声层和外罩减少噪声的传递;(4)安装挡板使噪声的传递方向偏离象住宅区等特定区域。设计阶段对噪声的控制设计阶段控制噪声的最有效的区域是气流通过叶片的振动频率与其谐波相互作用而产生不连续噪声的位置。对于离心风机来
Fan noise control Fan noise control has the following four basic methods: (1) through the design of the structure to reduce the noise generated; (2) install the muffler to absorb the noise generated; (3) the installation of sound insulation layer and the cover to reduce the transmission of noise ; (4) Install the baffle so as to deviate the transmission direction of the noise from a specific area such as a residential area. Control of Noise at Design Stage The most effective area of control noise at the design stage is the location at which airflow creates discontinuous noise through the interaction of the blade’s vibrational frequency with its harmonics. Centrifugal fan to come