Centrifugal turbine that sucks. Air.

thingiverse

A homemade vacuum turbine resembling those used in industrial equipment generates suction force at around 1800 rpm. The power of its grip becomes significant at 5000 rpm. With the motor maxing out at 10700 rpm, the unit does not rupture. A critical test was carried out to evaluate the machine's limits. Heavy vanes create a constant airflow through the turbine, while uniquely shaped vane endings aim to boost efficiency by manipulating air currents through the Coanda effect. Although weight is significantly reduced thanks to hollow vanes, moisture accumulating within may cause the entire apparatus to become unstable. Researchers measured that this machine creates suction equivalent to 4 mbar at a rotational speed of 5000 rpm. Notably, this level falls marginally short of the calculated maximum potential efficiency of approximately 4.25 mbar, effectively invalidating its theoretically advanced aerodynamics-enhanced design component. The centrifugal turbine's dimensions consist of an outer diameter of 100 mm, discs being just over 1 mm in thickness (with a small increase near motor attachment) and vanes standing at around 10 mm high. Furthermore, there exists a relatively small central hole, designed for fitting onto commonly used Dremel tools. A readily accessible parametric CAD model based on FreeCAD v0.15 is offered to ensure maximum design flexibility in changing any required size. When setting out to manufacture the vacuum turbine, modifications must first be made according to one's chosen motor. This requires revising and adjusting the fundamental sketch known as "base" present within its pre-optimized 3D model. Users must then adjust their printing configuration by inputting a substantial number for perimeter values when it comes to printing out each successive layer. Moreover, applying advanced layer filling techniques can potentially maximize structural support against excessive centrifugal stress exerted during continuous operation, though be aware that standard slicing tools such as Slic3r 1.1.7 will produce undesirable outcomes due to malfunctioning bridge detection features.