Analysis of ventilation system optimization based on the Taguchi method

This research revolves around the ventilation system of range hoods and discusses the optimization of the flow field from the perspectives of reverse engineering (RE), the Taguchi method (TM), and computer aided engineering (CAE). These were integrated to develop an impeller system with an optimized air discharge volume. Analyses show that the arc length of the blades and the deflection angle of the impellers are the most prominent factors affecting the volume of the air discharge. A maximum air discharge volume was achieved during the experiment with 54 blades and a deflection angle of 65 degrees, which is an enhancement of 17.5% in comparison with that of the original design. In an environment with shortened product life cycles, the results from this research are expected to improve the air discharge efficiency of impellers and effectively reduce the time needed for the development of ventilation systems.