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| 个人信息 |
|---|
| 学号 | 0128303 |
姓名 | 周静茹 |
| 学院 | 城市建设与环境工程学院 |
专业 | 供热、供燃气、通风及空调工程 |
| 申请学位 | 硕士 |
指导教师 | 黄晨(教授); |
| 论文信息 |
|---|
| 论文标题 | FFU专用风机国产化的研究 |
| Title | 无信息 |
| 关键词 | FFU 风机过滤器单元 离心风机 叶轮 叶片 出口角 成型 |
| Keyword | FFU, Centrifugal Fan, Impeller, Blade, Angle of Dispersion, Mold |
| 完成时间 | 2004年2月 |
中图号 | TU8 |
| 摘要 | 随着工业技术的高度发展，洁净室应用于微电子工业、半导体、精密机械、制药业、塑料制品和食品加工业等各个领域，技术的发展对生产和工作环境的洁净度要求越来越严格，洁净技术的高低直接关系着科技水平的高低，我国从60年代开始出现洁净室以来，洁净技术有长足的发展，尽管如此，与国际领先水平仍有相当差距。
FFU（风机过滤器单元）作为高洁净度洁净室的常用设备在工业、医药各方面得到广泛的应用。目前国内FFU的生产技术常常不能满足级别较高的洁净室要求，主要是关键部件（包括过滤器、风机）的制造技术不高。
本文选定某一适用于FFU的国外通用无蜗壳风机作为样机，其230V电压最大风量为2450m3/h，声压级为67dB(A)。样机为后弯形叶片，随着叶片高度的变化叶片安装角度也有变化，针对它的几何特性首次将传统的风机设计方法与水泵的三元成型方法相结合，设计制造了两个FFU专用风机。根据有关流道的假设，两个自制风机叶型一致只是因高度不同（高度分别为91mm和96mm）而造成流道的增减。
与样机的对比试验显示：在FFU的工作区间内，高度为96mm的自制风机与样机基本一致，且对应电压高于样机，在最常用到的工作区间里，电压在220V左右；高度为91mm的自制风机可提供的能量偏小，需要更高的电压才能提供足够的压头，但由于其高度低，可以应用在对压力要求不高的局部净化设备。
试验结果证明本次课题采用“一元设计三元成型”的设计思路是可行的，这为风机的工程设计提供了一个新方向。 |
| Abstract | Clean Room equipment is a must for high tech industries such as microelectronics, semiconductor, precision machinery, pharmaceutical, plastic molding and food processing. In order to prevent contamination and corruption during production process, atmospheric impurities such as microscopic particles and microbial particles has to be reduces to the minimum. Thus, many of these industries requires more and more stringent clean Room technology. Clean Room appeared in 1960s’ in China, however the Clean Room technology has gotten quite great progress, it has an unneglectable gap to the international leading level.
FFU (Fan Filter Unit) is a common used component in the Clean Room, especially in the higher class Clean Room. The national FFU manufacturer fail to manufacture the proper fan and HEPA (High Efficient Particulate Air Filter) which are the key components of FFU at present.
In this paper, we choose an overseas fan (the sample fan) to study its geometrical and running characteristics which are applicable to FFU. The maximal capacity is 2450 m3/h on the pressure of 230V with the noise 67dB(A). Its backward blade changes the fixing angle as the height changing. Considering this circs, we combined the method of traditional fan design with the pump design and produce two model fans for FFU. At last, we do some experiments and testing to compare the characteristics among the 3 fans. The difference between two self-manufactured fans is just the height, it makes the flow passage different.
The results of the test show the higher self-manufactured fan can provide the proper capacity, air pressure and the noise is low enough with more proper voltage than the sample fan. The other needs too high voltage to sustain the FFU’s everyday running. But it can be used in some cases what need lower wind pressure.
All the above imply that the design thought we used in this paper is feasible. it conveniences the practical design of fans. |
| 全文链接 |
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