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OGH inspired lb fluidbed w/cyclonic separator.
JETROASTER
I tried to control myself....but failed. I feel the OGH repurposed coffee brewer is brilliant. Although I still have some other stuff on the burner, I thought I might bounce a couple ideas around to see if anything sticks.

The Goal:
1)Built completely within the confines of the original brewer housing.
2) 1lb minimum.
3) Onboard cyclonic chaff separator
4) Electric

I have already found a sacrifice. -Scott
JETROASTER attached the following image:
carcass.jpg
oldgearhead
Welcom to the word of stainless steel. I've spent most of the day trying to nibble out a 1/16th din hole. However, Greelee has a nice punch for $500.00...
No oil on my beans...
JETROASTER
I hope that is for a set!!!! I checked those too...I fell back to the Dremel.
I did see some old US made Greelee stuff on Evilbay for a bit less ,but still pricey.
-Scott
JETROASTER
Well, here it is broken down. The hot water tank and pour-over receptacle are constructed as a 1 piece unit.
So far, I feel like the h2o tank will become the cyclonic chamber .....A bit narrow, but I think I could make it work ,@ or below 75cfm.

I need to figure out a very 'flat' heat source. -Scott
JETROASTER attached the following image:
stripped.jpg
greencardigan

Quote

freshbeans wrote:
I need to figure out a very 'flat' heat source. -Scott


I've seen some flat dryer elements but they are usually high wattage.
Unta
My only question.....when do you sleep?
Sean Harrington
educate.
JETROASTER
...Gave it up years ago.
dja

Quote

oldgearhead wrote:
Welcom to the word of stainless steel. I've spent most of the day trying ...


on a deal like this I used to start in the corners with a small drill bit. then drill a pretty good sze hole in the middle, then very carefully use a jig saw with a very fine tooth blade and saw the to the line is what they used to tell me in wood shop,

Oh yea if you only see have a line when your done, you left too much.

Actually Radio Shack sells a small hand nibbler that actually works suprisingly well on most of the stuff that I have tried it on, you just drill a hole somewhere in the waste, then start to nibble it out one bite at a time. You just want to get used to the tool before you cut the hole to big.

Dremel Tools with them tiny cut off wheels will do the trick also, be sure and put some masking tape down to draw the lines on cause they tend to dissappear.

David.

Scott this should be an interesting build, I want to see you get coils in there. Now if that case was just a little bit bigger............hum (thinking)
I pour Iron and roast Coffee BeansThumbsUp
If life seems normal your not going fast enough Mario Andrette
JETROASTER
This is the general idea. It really was not my idea. It is a distillation of things I've seen here at HRO.

.......You are all to blame. ;) -Scott
JETROASTER attached the following image:
oghlayout.jpg
danw2002
looks good, one thing is the chaff collector being low and flat, it will maybe close up air flow pretty fast, maybe put it in the middle of the air feed to the blower and slant it so as to help it clear itself as things move around...just a thought.

Quote

freshbeans wrote:
This is the general idea. It really was not my idea. It is a distillation of things I've seen here at HRO.

.......You are all to blame. ;) -Scott

Dan Williams...WHAAAT!?!?!? I have NOT had enough coffee.....
JETROASTER
Whoops! ...my bad. That whole rear chamber is the separator...top to bottom.
It's not exactly CAD:) , just a 2.99$ app for Droid. It has its limitations. -Scott
oldgearhead
I'm sure the key for the sucess of this one is the heat chamber.
May I suggest a design similiar-but-bigger than the old Zach&dani.
The roast chamber is very flat and it has a tangential inlet that mates via a short channel with a tangential output blower. Two 5-inch tangential output blowers should work. Just gut one of them and wire in some coils.
One problem is they would need to be mirror images to fit your space.

Good luck,
OGH
No oil on my beans...
Unta
is propane out of the question for the heat?
sean
Sean Harrington
educate.
JETROASTER
Of course not! I love fire!
What's cookin' in that noggin'? -Scott

oldgearhead

Quote

freshbeans wrote:
Of course not! I love fire!
What's cookin' in that noggin'? -Scott



Spec item #4 = 'electric'

If gas is okay, why not just set in on your stovetop?
No oil on my beans...
JETROASTER
"Spec item #4 = 'electric'"

Yeah, this one will be. I've got someone interested in leasing. Propane makes people nervous.

...However, If I convert a large airpot brewer...with 24" of RC space...that would be a different animal!
-Scott
greencardigan
Hi Scott,

How's this one going? Have you started on the chaff collector? I'm hoping to add a cyclonic separator in my roast chamber and was looking for ideas.
JETROASTER
Well, the first thing I know for sure : There is never enough time.

Second: I feel comfortable with the water tank as the separator housing. It's similar in size to alot of the vacuum cleaner separators I see everyday. This machine will only be putting out around 65 CFM , this should be plenty of space .
JETROASTER attached the following image:
ogr_core.jpg

Edited by JETROASTER on 07/07/2011 4:33 PM
JETROASTER
Third: I'm pretty sure I will transition into the separator using square or rectangular tube. (similar to the Mocca Master spout) , rather than having to calculate the elliptical cut for a round tube.
JETROASTER attached the following image:
sq_tube.jpg

Edited by JETROASTER on 07/07/2011 4:33 PM
JETROASTER
The last thing I know so far, is that I will be recreate the inner workings of one of these. I will skip the multiple cyclones on top, and just do the single internal cyclone. That's all I know so far. Good luck! -Scott
JETROASTER attached the following image:
bin.jpg
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