长期以来,罗茨式鼓风机被认为是冲天炉理想的供风设备。因为罗茨式鼓风机风压高、风量变化小、供风稳定。但随着国家对节约能源和环境保护的日益重视,这种风机“噪声大、耗电量高、价格贵、维修困难”的弱点就越来越明显。有些单位、还花费较大费用来减少噪声,改善劳动条件。 Roots blowers have long been considered the ideal air supply for cupolas. Because of the high pressure of the Roots-type blower, small changes in air volume, and stable air supply. However, with the increasing emphasis on energy conservation and environmental protection by the state, the weaknesses of such fans are “noise, high power consumption, high prices, and difficult maintenance”. Some units also spend a lot of money to reduce noise and improve working conditions.