Abstract: Taking the project of air purifier with double air inlet duct as the research case, this paper designed and researched the fan of it. Firstly, some theoretical plans were selected and optimized by the Flow Simulation module. Then the optimized designs were made into hand-board prototype and completed the test validation. The measured results prove the research method has a certain guiding significance for the design and development of air purifier fan.

Key words: Air purifier, Flow simulation, Fan design, CADR