How to draw this part?

Malcolm_Akner

Hi everyone. I'm trying to recreate this brazed plate heat exchanger: https://www.onda-it.com/media/1713/How-a-Plate-Heat-Exchanger-Works-Onda-SpA_2020.pdf (or something very much like it), and I can't for the life of me figure out how to do it. The end goal is to be able to do CFD on it, so the model has to hold up for that.

I've been trying extrusions, hollow, mirror, linear patterns, sweep etc. but nothing really seems to be doing the trick. I think the best way to create this is just to make one layer and then stack it in an assembly. I'm also pretty sure that there are two different layers being used, but it could also just be a single one that is flipped and rotated to create the pattern. The best image to go by is the one I've uploaded. Beta = 65, p = 6mm, b = 1.5 (depth of each channel).

Overall dimensions are (length,width,height) 526*111*83 mm, but all I need is a method to draw one layer. Notice that one of the sides is raised while the other is lowered. This is only important at the edges where the holes are, in the middle section everything should be symmetric.

I would very much appreciate any help to get me started on a good path.

Thank you for reading and good luck!

/Malcolm Akner

MichaelPascoe

@Malcolm_Akner
Here is one approach you could take:

• Extrude the main shape with the 4 holes already in it.
• Create a plane on the surface of the main part.
• Sketch the "vents" and removed areas on the plane. (Note: if you sketch on the face, you will have to manually select each shape for the next step.
• Extrude remove with a draft angle, use the sketch in the previous step for the source.

https://cad.onshape.com/documents/5ff545e80eabba407d60840b/w/dd711421ea07868f9df4d029/e/fcdf77c3177ab70c4e3a338a