Evaporator Gallery

**tiborrr** · 12-18-2007, 11:19 AM

Originally Posted by teyber

Quickly sketched some evaps. Sorry if this is in the wrong place. i did a search for "evaporators" and this came up as i do not want to make a new thread. If this is frowned upon, i will edit posts and start new thread or pm somebody. These are the designs: considering making from aluminum. A little economy evap perhaps?

Any obvious suggestions?

Sorry to dissapoint you but this design is un-doable. No machine in the world can bore holes between the chambers as you modeled it here. 3D CAD can widthstand much, but reality cant

**killermiller** · 12-18-2007, 11:32 AM

The design is very doable. You can dremel the area out.

**tiborrr** · 12-18-2007, 11:39 AM

No sorry, you cannot. If its U-shaped hole, you can (many stepper evaporators in this gallery incorporate this type of hole). Because it's O-shaped, you cannot dremel that out since no measure must not be narrower than the diameter of the hole.

**killermiller** · 12-18-2007, 11:46 AM

So are you saying that that design is undoable because the opening would have to be "U" shaped "O" shaped? The design itself if in fact doable.

**tiborrr** · 12-18-2007, 11:53 AM

I know the design itself is doable, since i have similar (copper) evaporator, i was refering to the openings not the stepper design. I guess i have expressed myself a bit strangely, should talk about the openings only.

But i think its crucial to remind the people that some CAD design solutions cannot be put to life. Perhaps with 3D printers, but not with CNC machines or even manualy operated lathes.

**killermiller** · 12-18-2007, 12:07 PM

I would like to see a # of slashes though the levels instead of holes. I wonder how that would work?

**[XC] 2long4u** · 12-18-2007, 12:16 PM

That design is doable as you would need a cutter in the shape of a ball.

**TopherTony** · 12-18-2007, 03:31 PM

Lost wax casting would work for sure

**teyber** · 12-18-2007, 03:52 PM

Originally Posted by killermiller

I would like to see a # of slashes though the levels instead of holes. I wonder how that would work?

I would guess that you would loose capacity because of refrigerant not be-ing in evaporator long enough to cool completely, unless im am mis-understanding?

And the shape is doable, you can buy these little balls for a dremel, but sketchup was glitching when i was trying to make a U so i just did that to symbolize a stepper... anywho, my lathe is having serious electrical problems so i think i will return it for a 4 axis sieg x3 mill. Will have different plans then.

Thanks for feedback.

Reed

**killermiller** · 12-18-2007, 04:03 PM

Instead of a single hole, make a series of small slashes to make the evaporating refrigerant contact more of the block.

**teyber** · 12-18-2007, 04:13 PM

gotcha... Will do chief. A bunch of 1/16" or so holes.... nice!

**killermiller** · 12-18-2007, 04:33 PM

I would vary the depth of the slashes from shallow to deep. The shallow starting at sat 160 degrees and the deepest being 180 degrees from the other side.

**[XC] 2long4u** · 12-18-2007, 05:06 PM

You could use slashes all the way around on the 2 inside shelfs.

**Touche Turtle** · 12-18-2007, 07:05 PM

There's some great work on here, I'm amazed at the quality of the evaporators you guys have designed and made!

Not being familiar with machining limitations I'm not sure if this is practical, but would it be beneficial to have curves etched into the top & bottom surfaces of each chamber to increase surface area & turbulence a little and (possibly more importantly) guide the flow towards the central pillar and away from the outside edge? (instead of curves, I guess straight lines could be used, at a tangent from the outside of the central pillar, similar in appearance to a break disk's ventilation grooves.)

**[XC] 2long4u** · 12-20-2007, 10:29 PM

I have this idea we can make millions!

Click image for larger version.

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Quick quiz what movie was that from?

**teyber** · 12-20-2007, 10:49 PM

Originally Posted by 2long4u

I have this idea we can make millions!

Quick quiz what movie was that from?

i think that was from this movie:

am i correct?

Or am i really ignorant... Ill be postin up some new evaps in a couple weeks. my lathe came and died on me lol. A sieg x3 is in the mail along with a rotary table to be ordered tomorow.

Regards

**tim-** · 12-20-2007, 11:57 PM

sounds good teyber, much more fun with mill compare to lathe if you can't choose both.

**[XC] 2long4u** · 12-21-2007, 01:48 AM

Tyber it is just a blue pic. Fix link.

**teyber** · 12-21-2007, 04:23 PM

Originally Posted by tim-

sounds good teyber, much more fun with mill compare to lathe if you can't choose both.

Yeah, you can do much more with mill...

Originally Posted by 2long4u

Tyber it is just a blue pic. Fix link.

O, i know

I saw your "evap" picture and posted a equally random one

keep on keepin on

**[XC] 2long4u** · 12-21-2007, 04:30 PM

I didn't say it was an evap, did I?

Nobody knows what movie that was from?

**Touche Turtle** · 12-21-2007, 05:27 PM

Originally Posted by 2long4u

Nobody knows what movie that was from?

Awww, shucks, I really should know this.

Edit: nope, i still can't think of it. I'll have to ask my sons, i'm sure they'll know.

**ryba** · 12-24-2007, 06:10 PM

Few more photos after brazing

Yes I know, I must polish this evap better

And for end of my post, macro !! photo of this evap.

http://rybamcz.boo.pl/zdjecia/parown...li%20macro.jpg

**teyber** · 05-10-2008, 02:46 PM

k posting up some recent evaps... The main one from now on will be the maze's... the steppers take me around 6 hours on my mill, as i do them on rotary table. i can do them faster but they turn out really bad

Will be making some mountings in near future. ill post them here.

regards