A Powerful 3D Printed Blower | Duratech DC Motor | YM2770 | STL files Download | DIY Project 2020 

Yes. I broke first impeller when on high rpm! The link in description which is scaled version modified by me has very good supports built with impeller which I believe can support quite high rpms and give high performance boost.

Adding some square shapped funnel right at the output of this exact blower might help.. just a suggestion

@@ProDroneControl thanks for your guidance . I will try that

lamellák terpeszésével lehet a szórás növelni de itt az erős kég kiszorás a feladat egy centrifugális ventillátor esetében

Thanks Qaisur. I usually keep settings to the standard with Cura software. For impeller, the fill density should be kept higher as it needs to be the strongest part in assembly.

@High Paw In Cura software, there is setting named Fill Density.. setting it to 80% or higher is good..

That's the way you go if you wanna throw the air outta that blow outlet ! 👍

@@ProDroneControl: The air will only go out that hole with either direction that you spin the fan, as a centrifugal fan. It will just blow a lot harder when you spin this kind of centrifugal fan in the convex direction, because it puts enough less load on the motor for the amount of power you're giving it, and thus the motor can actually spin at enough of a faster speed that's more than just making up for the lesser amount of air being picked up at a time by each blade for being spun away from their concave direction instead of towards it. If the fan were a "squirrel cage" type of centrifugal fan instead, then by design you would spin it in the concave direction comma and it wouldn't give you as high a pressure as this one would if you spun it correctly, but it would give you more flow at a time. I don't really know how to explain the difference between pressure and flow rate when the size of the housing isn't adjusted to match one or the other.

​@@HelloKittyFanMan I wanted more air somehow with this little blower and found this way effective. Any more tips on how to improve this are most welcome!

@@ProDroneControl: You would have made this more effective with the blades spinning in the other direction, not only for the reason that I just stated, but also because they would be throwing the are directly towards the outlet rather than just into the circular area again. Also, these are normally in more of a spiral shape with the blower blades and intake on the inside of the spiral than they are like this ( basically your circle with that straight area coming out of it). I can't explain why the spiral is supposed to work better, but it does.

yes. Brushless motors have quite some power for their smaller size. But are bit expensive and need additional circuitry like ESCs etc..

@@ProDroneControl i thought about going that route but all the extra circuitry has me really confused. Im a KISS (keep it simple stupid) kind of person.

I am tinkering with the idea of having the motor in the center of the turbine object so that the size is much more compact.

Direction of printing matters. Also, add a ring shape on top of the blower fins to additional strength!

Very good comment. Design in itself, comes out pretty balanced. Thing that produces vibrations is the hole where shaft fits. Its not perfect circle nd to the size.. one may have to make tighter hole and then drill perfect hole or using metal thing might do well..

Please see the links in description!

PLA sir

Buying DC blower can be little expensive at first with DC motor being the expensive item. If you have any DC motor lying around, you can make your own blower that fits motor size like I did. You ll need 3D printer for that. I have provided downloadable files for the blower in the description of this video. Thanks!

Hi, files are given in description of this video. They are in STL format which can easily be opened in CURA slicer for 3D print or Solidworks software!

But one can adjust direction rotation in DC motor easily.

​@@ProDroneControl , sorry, my mistake. This kind of design is a bit hard to understand for me. Also, reversing the motor you just reverse the airflow. If you want to try my idea, flip the fin rotor upside down... which won't work too (no air intake in that case). I watched several other videos about such air blowers and one guy measured the effectiveness of several types of fins. Curved fins are okay, but not the best. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-EBVBMvhi4Y0.html

@@aurimazas001: Nope. The air will go in through the middle and out from the side with the blades spinning in either direction. It'll just blow better without so much load when it spins in the convex direction (typically counterintuitively).

Not if he spins the fan towards their convexity.

No price. If you have 3D printer, I have provided files to download and make your own !