First, the design parameters were derived from the blade loading distribution and the meridional geometry in the impeller three-dimensional (3D) inverse design. The blade wrap angle at the middle span surface and the spanwise averaged blade angle at the blade leading edge obtained from inverse design were chosen as the machinability objectives. The aerodynamic efficiency obtained by computational fluid dynamics was selected as the aerodynamic performance objective. Then, using multi-objective optimization with the optimal Latin hypercube method, quadratic response surface methodology, and the non-dominated sorting genetic algorithm, the trade-off optimum impellers with small blade wrap angles, large blade angles, and high aerodynamic efficiency were obtained. Finally, computational fluid dynamics and computer-aided manufacturing were performed to verify the aerodynamic performance and structural machinability of the optimum impellers.
Wide TDR (Turn-Down Ration)
Impeller is rotated at high speed to compress the air. Good impeller design is directly affecting the good compressor efficiency. The turbo blower's centrifugal impeller can show the highest efficiency when high design capability and high precision processing technology are well blended.
For efficient operation in a water treatment system, a design that can provide a wide turn-down ratio (TDR) should be reflected.
who impellers provide sufficient RTS and 40~100% TDR while maintain high compression efficiency.
High precision impeller machining
The original design of impeller blades can be machined very precisely by a 5-axis machine that can be applied with a precision tolerance of 0.001 mm.
In other words, the design efficiency pursued can be practically implemented,
and the TurboMAX impeller is excellent in strength by applying aluminum alloy (AL7075).
Compared to the cast impeller, there is no internal defect and the internal density is uniform, so the balance of the processed product is excellent.
In addition, anodizing treatment on the surface of the impeller enhanced resistance against corrosion and chemical.
