Space Turbo

prusaprinters

<p>The design is originally from a project. The "turbine" is driven by a drone motor currently (about 8.5mm diameter) it gets too hot right now to be sustainable for long term use and makes a lot of noise. Version 1 is not really a proper compressor, and I wouldn't recommend using it that way. The turbo body was designed for Resin printing but FDM should work just fine with proper cooling.</p><p>[PARTS LIST]</p><p>[V 2.2]:</p><p>Motor: <a href="https://www.amazon.com/WORKER-Motor-Bearing-Stryfe-Rapidstrike/dp/B07SDBB7YM/ref=sr_1_32?dchild=1&amp;keywords=High+efficiency+high+rpm+motor&amp;qid=1613524456&amp;sr=8-32">https://www.amazon.com/WORKER-Motor-Bearing-Stryfe-Rapidstrike/dp/B07SDBB7YM/ref=sr_1_32?dchild=1&amp;keywords=High+efficiency+high+rpm+motor&amp;qid=1613524456&amp;sr=8-32</a></p><p>Fasteners: I am unable to find the correct fasteners online, if you plan on building it with the engine take it to the hardware store and find what you need, be sure to use flat head screws for the motor mount, AND MAKE SURE THE SCREW LENGTH IS NO MORE 5.5mm you will damage the motor.</p><p>&nbsp;</p><h3>How I Designed This</h3><p><strong>Version Log</strong></p><p>[VERSION 1]</p><p>[V1.0]- Original Assembly and parts</p><p>[PROBLEM LOG] : multiples Tolerance problem across all parts.</p><p>[V1.1]- second iteration tolerancing printability and functionality updates</p><p>[PROBLEM LOG] : the impeller seems to pull air as opposed to fling it out, resulting in a waist. the motor heats up significantly and is of concern for long-term use.</p><p>[VERSION 2]</p><p>[V2.0]- Started from scratch rebuild all parts using proper methods and an actual turbine and impeller design.</p><p>[PROBLEM LOG] : The Impeller has significant amounts of friction the cause is unknown. The amount of airflow is below what is desired. The Center motor housing tolerancing is to small.</p><p>[V2.1]- Redesigned impeller to resemble and perform closer to a true impeller giving it a curved body and second set of blades. The impeller was also shrunk to improve friction. Updated housing inlet to 3mm instead of 2mm to allow for better airflow. The Impeller rubbing was fixed as well as the tolerance problems, the entire assembly now fits together quite nicely and the impeller spins freely.</p><p>[PROBLEM LOG] : Motor Heating issues, if the motor runs at high speed for any length of time it tends to get hot, while this could be solved using lower voltages it seems like that would reduce the effectiveness of the blower. A solution might be to add metal cooling or use an entirely different motor.</p><p>[V2.2]- Redesigned motor mount for new improved motor, created second impeller to test alternative styles, seems to work well. The Impellers are both reworked for the new motor. The housing goes unchanged thus far.</p><p>[PROBLEM LOG]: the Impeller still struggles to pull air through a filter this is expected but disappointing. The size of the motor has reduced heating problems</p><p>though they will occur if run for extended periods of time.</p><p>[LAUNDRY LIST]:</p><ul><li>resin Print (pending results)</li><li>Increase Airflow and Suction (pending results V2.3)</li><li>Motor Heat Longevity solution (-Semi solved-)</li><li>Fitment to Ender 3/Pro as Part Cooling Fan (-Unknown-)</li><li>Part Cooling fan ducting (-Unknown-)</li></ul><p>PRINT SETTINGS</p><p>[FDM]:</p><p>I have printed all parts on an FDM printer for prototyping they will work but might not be super fancy or work as well. For the motor housing the use of tree supports is almost required, it also must be ensured that the supports are only touching the print bed (or raft) I would also use a raft for the Turbines as it helps them stay and you want those to be really flat. Cooling is essential for the V2.0 Turbine the overhangs are just barely printable and actually look a little ugly if you look inside, I have yet to try solving this as it is lower on the list of problems and should be FDM specific. I recommend printing in PLA as it is easier too use, however for the final version I will be printing all parts in PETG as it has higher temperature resistance.</p><p>[RESIN]:</p><p>I have yet to make any of the parts in resin as FDM has worked so well thus far, If you can though I would recommend printing the housing in resin as that should get rid of the stringing I've seen thus far.</p><p>Category: DIY</p>