roof crane

In this paper, the structure of roof fan has been improved and designed through the analysis of the leaking theory of roof fan.

通过对屋顶风机漏雨理论的分析,对屋顶风机的结构进行了改进设计,该设计方法使屋顶风机的漏雨问题得到有效的解决。

This paper mainly introduces the frequency control technique and technical innovation for large-type roof fan.

简介了大型屋顶风机变频调速技术及技术创新性。