chilly1 evap dimensnions

[cdawall]

i'm looking at making on of them in 3D CAD for a school competition does anyone have the dimensions of them...even rough ones are good enough

thanks...i'm looking forward to machining it out after i'm done drawing it my first single stage should be up and running sometime in april


the one on the far left should be the easiest to do so if someone has its that would help alot!

[[XC] 2long4u]

The one on the left isn't an evap, it's a base for a LN2 pot.
Do you need the dimensions for the spiral part too? Or just the outside dimensions?

[n00b 0f l337]

Actually it is an evap, worked pretty well too.
As for chilly1 dimensions, good luck spirals are a pain.
I would do a stepper, best performance I've found is with a Kayl evap (the second from left) in most cases.
Go with 1.5" OD, 3/16" base, then 1/8" gap and steps up the length.

[tim-]

2long4u
it's an evap, the one dimas supply. performs simular to chilly or whatever.. from my own experience it's small differences in performance between the different designs.

[cdawall]

Actually it is an evap, worked pretty well too.
As for chilly1 dimensions, good luck spirals are a pain.
I would do a stepper, best performance I've found is with a Kayl evap (the second from left) in most cases.
Go with 1.5" OD, 3/16" base, then 1/8" gap and steps up the length.

thanks for the info and i know they are a pain even in inventor they make me want to cry

[cdawall]

finished it other than the 1/4 hole to exhaust the gases

[n00b 0f l337]

I'd make that cut in much bigger. Use a 1/4" slab to remove a square to the center pole.

[[XC] 2long4u]

Don't machine the steps smaller then the outside diameter. You want the steps to seal to your outer cover.

[cdawall]

I'd make that cut in much bigger. Use a 1/4" slab to remove a square to the center pole.

thanks for the tip on making the hole it had me confused (this is my first year in inventor)

2long4u;2867188']Don't machine the steps smaller then the outside diameter. You want the steps to seal to your outer cover.

haha good catch i pressed a 4 instead of a 5 :dammit:

[teyber]

Nice cad!

Generally d=1.5", height is around 1.25"-1.5", usually in 1/8" steps.

Good luck!

Regards

[cdawall]

take 2

[cdawall]

and here is the 2D with dimensions

[godmod]

You have a major mistake there. Look at it for one minute and ask yourself where the captube should end and if its possible for the captube to "get there" :)
also some dimensioning is missing.

[[XC] 2long4u]

Meh, just drill it all the way to the bottom. Keep it around the same size as the captube for the best seal.

[cdawall]

good catch woops i forgot to add a circle in one of my sketches!

[teyber]

also, IMO, i think the suction hole not going all the way through (horizontally) is best.

nice drawings though :D

[cdawall]

also, IMO, i think the suction hole not going all the way through (horizontally) is best.

nice drawings though :D

i saw that on the guide to building the chilly1 evap so i figured it would be the same for this one.

as for the one going down to the bottom that was just me not paying attention. i doubt i will do that part on the cnc anyway i would just throw it on the drill press.

speaking of when the CNC guy shows up at my school i get to sit in and learn how to use it :D:D:D:D:D

[cdawall]

updated and set it to be copper in inventor :D

[jinu117]

Looks good. I do suggest putting cap tubing hole in the other end though.

[cdawall]

Looks good. I do suggest putting cap tubing hole in the other end though.

were exactly?

[killermiller]

The cap tube is the red line. Where it is positioned now the refrigerant would just go right back the same way almost. The cap tube should be positioned on exactly the other side so the refrigerant would pass over the center.

[teyber]

also, not sure if this would matter but it would be easier to machine if the TOP lip (the rounded part) where a square inlet, just maching 1/16" in. This is better for brazing.

Regards

[cdawall]

The cap tube is the red line. Where it is positioned now the refrigerant would just go right back the same way almost. The cap tube should be positioned on exactly the other side so the refrigerant would pass over the center.

fixed :D

also, not sure if this would matter but it would be easier to machine if the TOP lip (the rounded part) where a square inlet, just maching 1/16" in. This is better for brazing.

Regards

it matches the original pic i posted of it now? do you think it will make a temp difference to do it your way?

[TheKarmakazi]

nice drawings, look good!

wish you luck on your first build, let us know how it progresses

[cdawall]

will do hopefully in the next couple of weeks i will have some real progress made :D

[cdawall]

will the compressor out of a fridge work for one of these or do i need something bigger?

[teyber]

no won't make any performance difference. Just makes it a teeny bit easier to braze.

Good luck to you. start a thread when you start :D

[cdawall]

i might still flatten off the top but the rounded looks better for the school contest i'm entering


here is the more or less finalized setup