This creation is about a kind of coffee bean roaster.The utility model comprises a housing.A roller installed in the shell,At least one heating element which can heat the drum,An exhaust device and a control device；A heating chamber is formed inside the shell.The heating chamber is provided with an air inlet pipe communicated with the outside of the shell.The inner part of the roller defines a baking room for the coffee beans.The roller has a row of material outlets to discharge the roasted coffee beans.The exhaust device is communicated with the shell through an air flow channel.And the exhausting device comprises a box body and an exhausting fan installed in the box body；When the heating element heats the heating chamber,When roasting coffee beans in a roller,The external air entering the heating chamber from the intake pipe can be preheated by the pipe wall temperature of the intake pipe.本創作係有關一種咖啡豆烘焙器，包含一殼體、裝在該殼體內的一滾筒、可對該滾筒加熱的至少一加熱元件、一抽風裝置以及一控制裝置；該殼體內部形成有一加熱室，且該加熱室中具有與該殼體外部連通的一進氣管，該滾筒內部界定一可供咖啡豆容納的烘焙室，且該滾筒具有一排料出口用以將烘焙後之咖啡豆排出，該抽風裝置與該殼體之間具有氣流通道連通，且該抽風裝置包含一箱體及裝在該箱體內的一抽風機；當加熱元件加熱加熱室、滾筒烘焙咖啡豆時，由進氣管進入加熱室之外部空氣可藉由進氣管之管壁溫度所預熱。
