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Small roaster with gas or carbon!
solider86
Top  #1 Print Post
Posted on 01/09/2016 5:01 AM
Hi, guys!
Happy new year.
I designed a small roaster for gas or carbon.
It is fun to roast coffee at home.
The roaster has two modes to roast coffee, gas and carbon (charcoal).
Gas:
1.bp.blogspot.com/-BO0K15IEDwc/VpDZUNjvEyI/AAAAAAAAG5Y/zJ-eTgp_QmE/s1600/L1140961.JPG

Carbon (charcoal):
1.bp.blogspot.com/-SZiL_NGvj1Y/VpDZWfXOJvI/AAAAAAAAG6A/Nr-e6OOhMvc/s320/L1140966.JPG
Carbon mode:
https://youtu.be/...
Edited by allenb on 01/09/2016 6:49 PM
 
billsey
Top  #2 Print Post
Posted on 01/09/2016 12:38 PM
It must be very difficult to regulate temperature when running the carbon version. Do you use some sort of vanes between the fire and the drum, some sort of air injector, or just assume there will be the right heat?

Nice looking roaster though. smile
 
allenb
Top  #3 Print Post
Posted on 01/09/2016 6:59 PM
This is an excellent looking roaster! Can you post a time/temperature graph or list showing how the rate of rise per minute looks in carbon mode? I'm also curious how you control rate of rise using charcoal for heat.

Billsey, are you thinking as I that a Kamado temp controller with blower would be a good way to control this guy?
allenb attached the following image:
images_3.jpg
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
solider86
Top  #4 Print Post
Posted on 01/09/2016 8:02 PM

Quote

billsey wrote:

It must be very difficult to regulate temperature when running the carbon version. Do you use some sort of vanes between the fire and the drum, some sort of air injector, or just assume there will be the right heat?

Nice looking roaster though. smile


It is a good question.
The roaster was originally uesd on the stove.
3.bp.blogspot.com/-mBxvovqlCck/VpGw3TqYfLI/AAAAAAAAG7g/j0bxkMxJNS8/s320/IMG_5984.JPG

But my friends use carbon to roast. First roast, it took 30 minutes into first burst. 300g of Natural Yirgacheffe Aricha G1.
1.bp.blogspot.com/-_SGJQVd3wFA/Vk6sSqrzRJI/AAAAAAAAGv0/oJuh_qXBSu4/s320/IMG_5781.JPG

Then I redesigned the machine and add charcoal stove.
The charcoal stove design reference to the wood gas stove.
3.bp.blogspot.com/-V5ZDnKJd810/Vos7-6p-dCI/AAAAAAAAG3M/1uMR6YN44yA/s320/L1140944.JPG
4.bp.blogspot.com/-U4m5JYdP3bU/Vos7_8zGpsI/AAAAAAAAG3Y/rL01cc_rF-A/s320/L1140948.JPG

After tested the roaster with carbon, I just assume there will be the right heat and control air vanes.
300g of Finca Hartmann Black Winey.
00:00 170℃
03:16 123.2℃
05:55 155.2℃
07:34 171.3℃
08:21 179.6℃ first burst
10:52 204.2℃ End
4.bp.blogspot.com/-muOQ_WBsMb4/VpG7PcAtW_I/AAAAAAAAG74/tAScJusueEw/s320/L1140982.JPG
 
broeker
Top  #5 Print Post
Posted on 01/10/2016 5:01 AM
That looks great 😊
 
snwcmpr
Top  #6 Print Post
Posted on 01/10/2016 2:16 PM
That looks so professional. Impressive.
--------------
Backwoods Roaster
"I wish I could taste as well as I wish I could roast."

As Abraham Lincoln said "Do not trust everything you read on the internet".
 
solider86
Top  #7 Print Post
Posted on 01/15/2016 7:39 PM
I used cross-sectional view to show the air flow mode of small roaster.
Blue lines represent the cold air.
Red lines represent the cold air.
4.bp.blogspot.com/-3M_FGQPc3kw/VpmSX72yZRI/AAAAAAAAG8c/WZLZ5op82v4/s640/%25E7%25B5%2584%25E5%2590%2588%25E4%25BB%25B61.PNG

Before it used 4" AC fan, I change to 36W exhaust fan and subjion cyclone collector.
3.bp.blogspot.com/-FfK8OBpI-gw/VpmYp1vzxlI/AAAAAAAAG9E/CzK4vJ8Jgbo/s400/S__36732946.jpg
4.bp.blogspot.com/-smlD8udDNxg/VpmYqVZgQzI/AAAAAAAAG84/nMm5VWVBCDg/s400/S__36732947.jpg
2.bp.blogspot.com/-7kUGE09F1uU/VpmYp4S7PMI/AAAAAAAAG88/7kliRPDrS20/s400/S__36732937.jpg

https://youtu.be/...
 
solider86
Top  #8 Print Post
Posted on 03/25/2016 7:28 PM
The points of improvement.
1.36W exhaust fan
2.Cyclone
3.Test tempersture records program

4.bp.blogspot.com/-phMQB3VusaU/VvXYlbqJs2I/AAAAAAAAHZQ/NGMLNsuIJwYULErp9kQIoQDx0ner0STtw/s400/IMG_6157.JPG
1.bp.blogspot.com/-Mb6TJUgjCzg/VvXYlQZhitI/AAAAAAAAHZM/u41CYvK3h-sk9StXm_G8aoltjoTGtSJ0w/s400/IMG_6158.JPG
Edited by solider86 on 03/25/2016 7:34 PM
 
allenb
Top  #9 Print Post
Posted on 03/26/2016 1:16 PM
Looking nice! Can you show a photo of how you empty your cyclone?
Also, are you happy with how it's roasting?

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
solider86
Top  #10 Print Post
Posted on 03/27/2016 5:00 AM
3 photos of cyclone.

My friends are very happy to roast. Now, they plan to start selling charcoal roasted coffee beans in their coffee shop.
solider86 attached the following images:
s_2023439.jpg s_2023438.jpg s_2023437.jpg
 
solider86
Top  #11 Print Post
Posted on 03/28/2016 2:35 AM
The roasting video.

[video]https://www.youtube.com/watch?v=GgrPuXokUA0[/video]
Edited by JackH on 03/28/2016 3:54 AM
 
solider86
Top  #12 Print Post
Posted on 05/05/2016 3:11 AM
This month I try to build a 1.5kg roaster.
It still use charcoal.
2.bp.blogspot.com/-PBlvnKOq9pQ/Vyr_XRLWoBI/AAAAAAAAHyw/wS-A95JTRYM4LK702G_M-Jgjj1AUh3GiACLcB/s400/S__43024409.jpg
2.bp.blogspot.com/-_NOJZOnyZA4/Vyr_XY2T6EI/AAAAAAAAHyo/7mNw6f2C0yMfSgk1Hh-HZBhrSWl6WPtAwCLcB/s400/S__43024410.jpg
1.bp.blogspot.com/-2XdmYrCg0Xk/Vyr_XeoUTNI/AAAAAAAAHys/jDZEfTl54JAL3gaqJCC8rp2AR8I6L1VrwCLcB/s400/S__43024411.jpg
 
solider86
Top  #13 Print Post
Posted on 08/08/2016 7:16 PM
I tried to redesign the small roaster.
The new design makes it easier disassembly and moving.

[video]https://www.youtube.com/watch?v=LaSJplH8uRU&feature=youtu.be[/video]


youtube link: https://youtu.be/...
Edited by JackH on 08/09/2016 5:09 AM
 
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