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几年前人们已开始利用声波发射器进行吹灰。最近,专家们发现次音频声波——稍低于20赫可闻范围的压力波——的清洗潜力要大于在20赫以上可闻范围中工作的声发射器。使用可闻声音之外的次音频声有以下优点:可进行全向传播、衰减量最小,声压较低时清洗效率较高。经验表明,次音频声能清除锅炉、省煤器、回转式空气预热器、一般除尘器、布袋除尘器、烟道及导向叶片等部件上的干灰。
A few years ago people began to use sonic launchers for sootblowing. Recently, experts have found that the potential for sub-audio sound waves - pressure waves slightly below the 20 Hz audible range - has a greater potential for cleaning than acoustic emitters operating in the audible range above 20 Hz. The use of subwoofer sound outside the audible sound has the following advantages: It can be omnidirectional transmission, the minimum amount of attenuation, higher sound pressure cleaning efficiency. Experience has shown that sub-audio sound removal of dry ash on boilers, economizers, rotary air preheaters, general precipitators, bag filters, flue and guide vanes and other components.