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Tesla valve: print in one piece one way valve

by mymakerblog, published

Tesla valve: print in one piece one way valve by mymakerblog May 25, 2013

Description



My version of a one way valve with no moving parts invented by Nicola Tesla. Prints in one piece with no support material. It's still a work in progress. The first version only kind of works. You can find out more at my blog:

mymakerblog.wordpress.com/2013/05/25/tesla-valveprint-in-one-piece/

Update:Ugh, the second version I uploaded, might have been upside down. :(

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I mean that perhaps we can use a fluidic diode, or many of them stacked, as a one way valve?
Yeah, I was thinking that perhaps a better design would be to use apparent centrifugal force to create a one way valve. Kind of like this:

thingiverse.com/thing:15684
I’ve tried printing a two part valve available here at thingiverse and glue it together.

It seemed to have more flow resistance in the free flow inlet direction than in the blocking direction...

I also tried to design a "new" Tesla like structure, but it had the same problem, the flow resistance/back pressure seemed higher in the wrong direction.

None of them had any very significant back pressure difference.

Btw. I printed mine laying down

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I’ve tried printing a two part valve available here at thingiverse and glue it together.

It seemed to have more flow resistance in the free flow inlet direction than in the blocking direction...

I also tried to design a "new" Tesla like structure, but it had the same problem, the flow resistance/back pressure seemed higher in the wrong direction.

None of them had any very significant back pressure difference.

Btw. I printed mine laying down
I mean that perhaps we can use a fluidic diode, or many of them stacked, as a one way valve?
Yeah, I was thinking that perhaps a better design would be to use apparent centrifugal force to create a one way valve. Kind of like this:

thingiverse.com/thing:15684
Ok, so this actually doesn't work. I left out a fin, a fin that... cannot be printed vertically. That is, I can't incorporate this fin and still print the whole thing in one piece :(
Figured it out. I included the guiding fins but the whole thing doesn't work very well still. Well sh*t.
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