一、鼓风机的噪声特性 目前,机械工厂的冲天炉,多采用罗茨鼓风机(又名容积式鼓风机)、叶式鼓风机和高压离心鼓风机。这几种鼓风机在运行中都有很强的噪声。我们在北京地区的一些工厂,曾对这几种鼓风机的噪声进行过测定,其噪声级和频谱特性如下表所示。 由测量可知,这几种鼓风机 First, the noise characteristics of the blower At present, the mechanical factory cupola, more use of Roots blower (also known as positive displacement blower), leaf blower and high pressure centrifugal blower. These types of blowers are very noisy during operation. Some of our factories in Beijing used to measure the noise of these blowers. The noise level and spectral characteristics are shown in the table below. We can see from the measurement, these kinds of blowers