Ender 3 PSU Fan Cover by Cargy

Last crawled date: 3 years, 2 months ago

This is a bit of an experiment, as I wanted to see if I could reduce the fan noise from the PSU. I can't say whether it has actually made any difference to the noise level, but it does seem to have directed the airflow in a way that makes it appear quieter to me.
It was inspired by Godspeeeeed's fan cover (Thing 2998962), so I'm calling it a remix. But this was a fresh design, from start to finish, with no direct reference to his creation. But his magnets on the steel fan screws of the aluminium case is GENIUS!!! So, yeah, I nicked it!
I wanted to see if I could make a smooth airflow, but I don't know anything about fluid dynamics (or aerodynamics, or whatever the heck it is!). So I tried to provide plenty of cross sectional area, with no obstructions, and I rounded all the inner corners in the hope this would help reduce turbulence.
It was intended to exhaust vertically upwards (hot air rises, right?!) but experimentation has shown me that pointing it downwards appears to be the most effective at reducing the noise. Or, at least it diverts it away so that it seems quieter.
So there you go . It's either a great way to reduce noise, or a curvy whatnot with a satisfying placebo effect. Take your pick.
Now, if only I can come up with a way of hushing the hotend and parts cooling fans, and I'll be a happy bunny!
Happy Printing!