Coffee Roaster Exhaust Duct

Contact nordfab for assistance with ducting for your coffee roasting application or to learn more about our solution.

Coffee roaster exhaust duct.

Hot air motor connection. The exhaust of coffee roasters is typically pushed through vent lines to termination by fans that are pulling that air from the drum and cooling tray. Tighten the three screws to fix the hot air fan and the cyclone chaff collector. Flexible ducting is not recommended for coffee roasting systems.

Any dust or chaff loosened by the mixing is removed by an exhaust system. Standard nordfab duct is not designed for unexposed areas where double walled duct is required. The blended coffee then goes to holding bins or to feed hoppers over the roasters. Connect the main body of the coffee roaster with its green bean loading hopper.

Clean modern styling. The batch is mixed in a few minutes by helical flanges inside the blender. The initial roasting stage. Adjust the air outlet direction of the chaff collector.

Connect cyclone chaff collector with its hot air exhaust motor. Any bends will also restrict airflow and the total distance of exhaust pipe is also a factor. Shown is a csa 400 cat catalytic oxidizer. Clean stream afterburners reduce smoke odor emissions from commercial coffee roaster exhaust.

Coffee roasting is generally made up of numerous steps that require dust collection. There are really three stages to the coffee bean roasting process where ducting is needed to exhaust and extract particulate from the air. Inside the venting this type of airflow is called positive pressure because the pressure inside the vent line is greater than the atmospheric pressure outside the line. When the beans are loaded into loaders and drums dust can bloom.

Any exhaust ducting will increase the resistance to air movement and decrease overall air flow a little from the roaster. Nordfab duct should not be used as exhaust ducting from the afterburner. The diameter of the pipe is important but depends on a few factors. Hoods and ducting can be used to capture the dust and prevent it from settling back into the drum.

The proper weight of each grade of coffee for the blend is charged and the cylinder is rotated.