초록 ▼

A coffee roasting apparatus is disclosed. The apparatus includes a coffee roasting drum which is operatively connected to a driving mechanism to cause the drum to rotate. The drum comprises a cylindrical element having an upper opening, a bottom opening and a bottom plate placed below the bottom ope

A coffee roasting apparatus is disclosed. The apparatus includes a coffee roasting drum which is operatively connected to a driving mechanism to cause the drum to rotate. The drum comprises a cylindrical element having an upper opening, a bottom opening and a bottom plate placed below the bottom opening to control the opening and closing of the bottom opening. An infrared heater is placed above the upper opening of the drum and an electrical heating element is placed below the drum at a position slightly above the lowermost portion of the drum. Coffee beans which are roasted by the radiation hearing of the infrared heater and the air which passes through the electrical heat element are discharged into a box through a gap defined between the bottom opening of the cylindrical element and the bottom plate.

대표청구항 ▼

In a coffee roasting apparatus including a rotatable drum at an acute angle to the horizontal provided with a plurality of holes for promoting the roasting of coffee beans, a coffee bean supply duct arranged at an upper portion of the apparatus above said drum and a drive means operatively connected

In a coffee roasting apparatus including a rotatable drum at an acute angle to the horizontal provided with a plurality of holes for promoting the roasting of coffee beans, a coffee bean supply duct arranged at an upper portion of the apparatus above said drum and a drive means operatively connected to said drum to cause the rotating motion of said drum, the improvement comprising: said drum comprising an annular ring element having an upper opening and a bottom opening, and a bottom plate adjacent said bottom opening and axially slidably attached on said drive means for controlling the opening and closing of said bottom opening of said ring element to provide a discharge path for the roasted coffee beans; a plurality of stirring blades formed on an inner surface of said ring element; and an infrared heater placed adjacent to said upper opening of said ring element for roasting the coffee beans by the infrared radiation heat.