How to design efficient and simple process of "220V AC Cooling Fan" centrifugal chiller has been a major issue through scientific research personnel, to design efficient impeller blades is the main way to solve this problem. The impeller is "220V AC Cooling Fan" core pneumatic components, impeller flow directly determines the performance and efficiency of the machine. Therefore, in order to understand the true scholars impeller flow conditions, improving "220V AC Cooling Fan" impeller designed to improve the performance and efficiency of the impeller, made a lot of work.