Optimized Tesla Valve (parametric)
Description
Seeing the other tesla valve, I was pretty certain that the same principle could be extended to 3D. I came across a more symmetric, optimized design of a tesla microvalve at senlin41.org/topology-optimization-of-tesla-type-microvalve/ and traced it.
The following is a trace of the optimized valve in openscad with added support to make it printable without overhang or flying parts. Parameters allow you to set the coarseness of the rotational extrusion ($fn=32 works fine for me), and the distance of the support bridges.
I have not printed or tested that yet, so I suggest you start with the scad file and adapt it to your needs.
The following is a trace of the optimized valve in openscad with added support to make it printable without overhang or flying parts. Parameters allow you to set the coarseness of the rotational extrusion ($fn=32 works fine for me), and the distance of the support bridges.
I have not printed or tested that yet, so I suggest you start with the scad file and adapt it to your needs.
Instructions
The scad is divided up into the modules
tube: the outer tube. Just a cylinder with matching dimensions.
negative_space: everything you have to subtract from a tube to obtain a valve. (shown upside-down in the picture - in case you were wondering about printability)
positive_space: all the bridges and islands within the negative space.
valve: a complete valve = tube-negative space
You may also want to add a second set of bridges on the other side of the "bullet" for stability, and to deal with vibrations.
tube: the outer tube. Just a cylinder with matching dimensions.
negative_space: everything you have to subtract from a tube to obtain a valve. (shown upside-down in the picture - in case you were wondering about printability)
positive_space: all the bridges and islands within the negative space.
valve: a complete valve = tube-negative space
You may also want to add a second set of bridges on the other side of the "bullet" for stability, and to deal with vibrations.
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License
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Has anyone tried to print this yet?