セミオープン形羽根車の揚程性能向上に関する研究

抄録

Centrifugal pumps with semi-open impellers are indispensable for the cleaning process of electrical components such as semiconductors and printed circuit boards. To improve the productivity of these products, it is required to improve the head performance of these impellers. This report proposes five types of impellers with different blade outlet angles, clarifies the hydraulic loss by applying experiments and loss analysis methods based on the results of three-dimensional computational fluid dynamics for each head performance. As a result, it was clarified that the impeller with a blade outlet angle of 30[deg.] has a lift performance improved by 5[%] or more compared to the conventional design method. Furthermore, it was clarified that as the blade outlet angle increased, not only the other losses other than the friction loss of the volute casing increased, but also the total head increased.