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Brewer to Roaster..blower question...
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| oldgearhead |
Posted on 07/25/2011 11:10
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Pounder Plus
Posts: 481
Joined: 02/10/2011 15:16
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I made a couple of small changes last week:
1) I got rid of the step down ring that was located at the top of the RC, so that, I could easily install and remove the larger (3.5" od) chaff separator.
2) I moved the inlet holes in the sepapator down about an inch. Separator works very with wet-processed beans. I haven't tried dry-processed yet.
3) I realized I didn't explain the 'cooling' position of the air-recycle chamber (Brewer top). Basically its just parked in its 'up' position.
The mods and the cooling postion are shown in the attached image.
My next mod will be the installation of a $20 DC drive (KB) for the blower motor. Why a drive? Because I can:
1) Set min speed.
2) Set max speed.
3) Set current limit.
4) HP, torque, ramp, etc. are also pot settings.
oldgearhead attached the following image:
Edited by oldgearhead on 07/25/2011 12:03
"Development of flavor, aroma, and body in the coffee bean is a chemical process which requires absorption of a definite number of heat units per pound of coffee-in the shortest possible time and the lowest possible temperature." - Sivetz
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| danw2002 |
Posted on 07/25/2011 21:56
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1/4 Pounder
Posts: 76
Joined: 06/12/2011 13:01
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Ok, looks like you just added a ring to the shaker to move it down? is that how you got the holes 'down'? what is the relationship between the outside holes and the inner tube, you used a part from the cake pan right? how far down does it set in the shaker? will higher air flow mess it up? thanks.
BTW, would the DC drive work for my Kirby VC motor? if so, what model is it? or where are the specs to build it myself...thanks again for your time, this is really looking good, keep it up....
oldgearhead wrote:
I made a couple of small changes last week:
1) I got rid of the step down ring that was located at the top of the RC, so that, I could easily install and remove the larger (3.5" od) chaff separator.
2) I moved the inlet holes in the sepapator down about an inch. Separator works very with wet-processed beans. I haven't tried dry-processed yet.
3) I realized I didn't explain the 'cooling' position of the air-recycle chamber (Brewer top). Basically its just parked in its 'up' position.
The mods and the cooling postion are shown in the attached image.
My next mod will be the installation of a $20 DC drive (KB) for the blower motor. Why a drive? Because I can:
1) Set min speed.
2) Set max speed.
3) Set current limit.
4) HP, torque, ramp, etc. are also pot settings.
Dan Williams...WHAAAT!?!?!? I have NOT had enough coffee.....
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| oldgearhead |
Posted on 07/26/2011 07:24
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Pounder Plus
Posts: 481
Joined: 02/10/2011 15:16
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That's just 600 DF fiberglass tape that covers the upper holes in the separator. I made the top row of hoes to coincide with the vertical center of the 'snout' from the angel cake pan. The 'snout' extends 3.75" into the cocktail shaker and the lower set of holes are 3.0" down from the opening of the shaker. I will make an attempt to cut off a portion of top of the shaker in the near future, because it really is a bit too big on the outside. I just don't know if I can clamp it well enough to use my trusty Ridgid pipe cutter on it.
My DC drive is a KBIC-120. Its about 4.5" x 3.5" x 1.25". It's max output is 90 VDC. KB makes units that go to 130 VDC, but they are bulkier and more expensive. A 'Universal' motor, sometimes refered to as AC/DC may be ran with either AC or DC. I think if your motor is less than 2 HP it's probably a 'Universal' motor.
"Development of flavor, aroma, and body in the coffee bean is a chemical process which requires absorption of a definite number of heat units per pound of coffee-in the shortest possible time and the lowest possible temperature." - Sivetz
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| oldgearhead |
Posted on 07/26/2011 09:59
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Pounder Plus
Posts: 481
Joined: 02/10/2011 15:16
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Here is a roast from Monday. Its an absolutely great bean. Tastes like
nuts and chocolate. I wish you could smell it...
Colombia Cauca EP, Pescador
"Development of flavor, aroma, and body in the coffee bean is a chemical process which requires absorption of a definite number of heat units per pound of coffee-in the shortest possible time and the lowest possible temperature." - Sivetz
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| dja |
Posted on 07/26/2011 14:15
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1 1/2 Pounder
Posts: 734
Joined: 11/07/2008 09:34
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OGH were did you get the beans from
DAvid
I pour Iron and roast Coffee Beans 
If life seems normal your not going fast enough Mario Andrette |
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| oldgearhead |
Posted on 07/26/2011 14:36
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Pounder Plus
Posts: 481
Joined: 02/10/2011 15:16
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http://www.greenc.../index.php
But they don't stay available for very long..
Edited by oldgearhead on 07/26/2011 14:37
"Development of flavor, aroma, and body in the coffee bean is a chemical process which requires absorption of a definite number of heat units per pound of coffee-in the shortest possible time and the lowest possible temperature." - Sivetz
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| danw2002 |
Posted on 07/27/2011 09:01
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1/4 Pounder
Posts: 76
Joined: 06/12/2011 13:01
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ok, found a source for a KBIC unit, now will my Kirby motor be ok on DC? any changes or just hook it up? can not really find anything on running an AC motor on DC other then car stuff...thx, i think on my roaster project, i really need to slow down and control the speed of the VC motor, as i have to much , and this should work nicely for the control that i need... oldgearhead wrote:
......
My DC drive is a KBIC-120. Its about 4.5" x 3.5" x 1.25". It's max output is 90 VDC. KB makes units that go to 130 VDC, but they are bulkier and more expensive. A 'Universal' motor, sometimes refered to as AC/DC may be ran with either AC or DC. I think if your motor is less than 2 HP it's probably a 'Universal' motor.
Dan Williams...WHAAAT!?!?!? I have NOT had enough coffee.....
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| dja |
Posted on 07/27/2011 14:21
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1 1/2 Pounder
Posts: 734
Joined: 11/07/2008 09:34
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if your motor has brushes it will run it fine. make sure that you install it so that it can get some air flow across it to keep it cool. and is the hp Resistor big enough for your motor.
I pour Iron and roast Coffee Beans
If life seems normal your not going fast enough Mario Andrette |
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| seedlings |
Posted on 07/27/2011 20:01
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Administrator EMERITUS
Posts: 4295
Joined: 06/27/2007 11:39
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Kirby has brushes AND a heatslinger on the shaft to keep the heat off the motor.
CHAD
Don't put the cart before the horse. Put the horse in the cart and listen to him say "weeeee" all the way down the hill.
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| dja |
Posted on 07/27/2011 20:41
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1 1/2 Pounder
Posts: 734
Joined: 11/07/2008 09:34
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I didn't make myself clear I guess, I was meanng that the speed controller needs some air movement across it because of the triac's
I pour Iron and roast Coffee Beans
If life seems normal your not going fast enough Mario Andrette |
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| danw2002 |
Posted on 07/27/2011 21:40
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1/4 Pounder
Posts: 76
Joined: 06/12/2011 13:01
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good, thanks. the motor cooling air will be separate(kirby has a motor cooling duct) and not be heated by the RC at all, off of that i can cool the board, also i build amps, so i have some very cool heat sinks i can and will add, wait till you see what i am doing for my filter for heating charge intake and mix for preheated intake air from RC, very cool...it was one of those 'ah ha' moments...
dja wrote:
if your motor has brushes it will run it fine. make sure that you install it so that it can get some air flow across it to keep it cool. and is the hp Resistor big enough for your motor.
Dan Williams...WHAAAT!?!?!? I have NOT had enough coffee.....
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| dja |
Posted on 07/28/2011 04:50
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1 1/2 Pounder
Posts: 734
Joined: 11/07/2008 09:34
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where did you locate your KBIC board at
I pour Iron and roast Coffee Beans
If life seems normal your not going fast enough Mario Andrette |
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| oldgearhead |
Posted on 07/28/2011 07:45
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Pounder Plus
Posts: 481
Joined: 02/10/2011 15:16
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The one I have came from ebait. There are two local shops in my town that pull industrial contol equipment, I picked up the KB resistor from one of them. However, I haven't installed the KBIC-120 yet because it's just too hot! I have been running on the Staco varible-autotransformer. My voltages have been 60 down to 33. I am feeding the blower air into a 1.5" chrome sink-drain pipe that contains one 1.4KW heat gun element. This 'manifold' has 4 - .25" bleed holes in the 'cool' side. Most of my roasts have been 400 grams.
I must say this thing works better than I ever thought it would. A lot of the credit belongs to Scott, Chad, David, and the other pioneers on this site..
oldgearhead attached the following image:
Edited by oldgearhead on 08/01/2011 10:39
"Development of flavor, aroma, and body in the coffee bean is a chemical process which requires absorption of a definite number of heat units per pound of coffee-in the shortest possible time and the lowest possible temperature." - Sivetz
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| oldgearhead |
Posted on 08/10/2011 16:54
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Pounder Plus
Posts: 481
Joined: 02/10/2011 15:16
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seedlings wrote:
I'm curious how much heat you'll be able to recycle in the PVC? What's its operating temp rating? From my experience small increases in inlet air temperature can be a big help roasting. As an example, when I roast in 40F weather and a strong wind blows in the garage I can watch the ET drop by 5 degrees.
100F to 150F inlet air temps would show fantastic results.
CHAD
Chad - I now have enough data to answer your question, as far as high ambient temps are concerned. I can run my inlet air temperature to 164F in 88F ambient. This is accomplished by mixing the 260F RC air with the ambient. It would be possible to recycle more hot air, but I believe my pipe melts at 176F. Therefore, I will need to wait for winter to do more....humm...currently I'm doing 400 grams to full-city in 13 minutes with 1305 watts (PID at 90% manual)......
Note melting point of:
Grade 1 PVC = 140F
CPVC = 200F
Edited by oldgearhead on 08/10/2011 17:01
"Development of flavor, aroma, and body in the coffee bean is a chemical process which requires absorption of a definite number of heat units per pound of coffee-in the shortest possible time and the lowest possible temperature." - Sivetz
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| seedlings |
Posted on 08/11/2011 06:39
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Administrator EMERITUS
Posts: 4295
Joined: 06/27/2007 11:39
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Inlet temps over 100F will be a tremendous power advantage! Well done!
CHAD
Don't put the cart before the horse. Put the horse in the cart and listen to him say "weeeee" all the way down the hill.
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| nfcwest1 |
Posted on 08/12/2011 23:32
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Newbie
Posts: 25
Joined: 08/12/2011 18:54
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I am new to this forum , all this discussion about fans/ blowers. Ametek makes a complete line of DC brushless low voltage varible speed blowers. Also I discussions on heating elements and air flow. Use a heating element from a electric furnace and cut it down.
http://www.ametektip.com/index.phpoption=com_catalog&view=sections&which=catalogs&id=1&parentName=Blowersarible voltage blowers
Edited by allenb on 08/13/2011 07:37
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| freshbeans |
Posted on 08/13/2011 06:15
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Super Admin
Reasonable
Posts: 1400
Joined: 03/06/2010 11:10
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Hi nfc,
Welcome to the forum. I was unable to make page clickable.Sorry.
Anyway...lot's of other threads on blowers and heat, so have fun! -Scott |
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| nfcwest1 |
Posted on 08/13/2011 07:40
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Newbie
Posts: 25
Joined: 08/12/2011 18:54
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I wish I took pictures of my heating element before I put mine together. I took my hint from Flow torch . I purchased a rewind heating unit kit for a electric furnace for $38 comes with the insulators wound it in a 2 " spiral along a frame 14" long then slip it a 3 " stainless tube over it the air goes both thru the middle and also around the sides of the element. |
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| allenb |
Posted on 08/13/2011 07:42
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Super Admin
Fix It Man
Posts: 1473
Joined: 02/23/2010 19:51
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freshbeans wrote:
Hi nfc,
Welcome to the forum. I was unable to make page clickable.Sorry.
Anyway...lot's of other threads on blowers and heat, so have fun! -Scott
+1 on the welcome! Be sure and post often especially in regards to blowers and heat sources as we are always looking for new novel alternatives. As Scott mentioned, there's a whole lot covered in our forums as well and could take a while to scour it all.
Scott, I tried every trick I could think of to make it clickable with no luck either.
Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
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| oldgearhead |
Posted on 08/15/2011 09:08
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Pounder Plus
Posts: 481
Joined: 02/10/2011 15:16
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Okay, I'm just about 100% with this project. I have installed the DC drive, and I would like to report that it is far superior (and less costly) than the Dayton router controller. I set up the drive as follows:
Min speed = 20 VDC
Max speed - 70 VDC
HP = 1.0 (resistor)
Current limit = 6 amp
oldgearhead attached the following image:
"Development of flavor, aroma, and body in the coffee bean is a chemical process which requires absorption of a definite number of heat units per pound of coffee-in the shortest possible time and the lowest possible temperature." - Sivetz
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