Tweet
Hello, CSers! I come with another labor of love still in progress.
The concept is an indoor, smokeless, hot-air-recirculating, roaster/cooler/dechaffer, that runs on a 20amp (or less) 120VAC circuit.
So far the design is revolving around a Kirby Vacuum Cleaner motor. The motor assembly is all aluminum with an aluminum fan blade plus a "heatslinger" fan to cool the motor. It is a universal brushed motor whose speed can be continuously varied with a triac timer controller. This motor lofts 2+ pounds (about 1 Kilo) only drawing 2.55 amps.
The motor blows up into a section of muffler pipe housing nichrome heater coils, then into a removable roast chamber, part aluminum and part glass to circulate the beans. The hot air goes up into the back side of the roaster where there is low pressure and aluminum screen to trap the chaff, and the hot air continues on, returning to the motor inlet. To cool, shut the heat off, then open a panel to allow cool air to enter and blow acoss the beans.
Fire (smoke) needs oxygen. My hypothesis is that a self contained, sealed roaster will not smoke, or do so very little. But since it cant be completely sealed, this will allow moist, hot air a path to escape, while hopefully not bringing any new air in until cooling starts.
The roaster isnt done yet... so its very possible this wont work, but well see!
The final construction is with aluminum angle and cement board.
Ive documented extensively in this thread:
http://www.homeroasters.org/php/forum/viewthread.php?forum_id=32&thread_id=984&rowstart= 80
CHAD
The concept is an indoor, smokeless, hot-air-recirculating, roaster/cooler/dechaffer, that runs on a 20amp (or less) 120VAC circuit.
So far the design is revolving around a Kirby Vacuum Cleaner motor. The motor assembly is all aluminum with an aluminum fan blade plus a "heatslinger" fan to cool the motor. It is a universal brushed motor whose speed can be continuously varied with a triac timer controller. This motor lofts 2+ pounds (about 1 Kilo) only drawing 2.55 amps.
The motor blows up into a section of muffler pipe housing nichrome heater coils, then into a removable roast chamber, part aluminum and part glass to circulate the beans. The hot air goes up into the back side of the roaster where there is low pressure and aluminum screen to trap the chaff, and the hot air continues on, returning to the motor inlet. To cool, shut the heat off, then open a panel to allow cool air to enter and blow acoss the beans.
Fire (smoke) needs oxygen. My hypothesis is that a self contained, sealed roaster will not smoke, or do so very little. But since it cant be completely sealed, this will allow moist, hot air a path to escape, while hopefully not bringing any new air in until cooling starts.
The roaster isnt done yet... so its very possible this wont work, but well see!
The final construction is with aluminum angle and cement board.
Ive documented extensively in this thread:
http://www.homeroasters.org/php/forum/viewthread.php?forum_id=32&thread_id=984&rowstart= 80
CHAD
Comment