초록 ▼

A coffee roaster which roasts coffee beans in an oven chamber employing both radiant and convection heating techniques while the beans are continually intermixed in a fluidized bed. Roaster control means are provided to terminate the roasting process by quenching the beans and oven chamber while mai

A coffee roaster which roasts coffee beans in an oven chamber employing both radiant and convection heating techniques while the beans are continually intermixed in a fluidized bed. Roaster control means are provided to terminate the roasting process by quenching the beans and oven chamber while maintaining the beans in a fluidized bed to avoid scorching or further roasting by the residual heat of the coffee bean mass.

대표청구항 ▼

A coffee roaster, comprising: an oven chamber in the form of a vertical cylinder, closed at the bottom and opened at the top and including means for admitting forced air comprised of a plurality of openings in the lower portion of the cylindrical wall of said oven chamber, each of said openings dime

A coffee roaster, comprising: an oven chamber in the form of a vertical cylinder, closed at the bottom and opened at the top and including means for admitting forced air comprised of a plurality of openings in the lower portion of the cylindrical wall of said oven chamber, each of said openings dimensioned and positioned in said oven chamber wall so that said forced air entering therethrough flows in a circular path within said oven chamber and about the vertical axis of said oven; blower means for generating said forced air at a flow rate which will create a fluidized bed of a charge of coffee beans in said oven chamber; heater means for heating said forced air prior to its entering said oven chamber; heater control means for turning said heater on at the beginning of a roasting cycle and off when the coffee bean charge has reached a desired degree of roast; and blower control means for energizing said blower concurrently with said heater.