The creation is a coffee bean roasting barrel, which is arranged on a drive of a bean roasting machine and includes a body and a plurality of blade units. The body includes a bucket body and a cone portion. Controlled by the driver, the tail end of the barrel body forms most of the air inlets arranged in a ring shape. The cone is formed at the head end of the barrel body and forms a central air outlet. The blade units are arranged in a ring shape at the tail end of the barrel body and the blade units correspond. An air inlet, each blade unit includes an inclined plate, one end of the inclined plate is formed in the barrel body, and the other end of the inclined plate is inclined toward the air inlet. The original coffee bean roasting bucket is installed in the toaster, and the blade unit is in the barrel. The hot air is driven to flow during rotation, which saves the installation of exhaust fans and reduces energy consumption, and the conical part allows the flow of hot air to flow uniformly through the barrel, without dead corners.本創作係一種咖啡豆烘豆桶，其設於一烘豆機的驅動器上並包含一本體及多數葉片單元，本體包含一桶身及一圓錐部，桶身旋轉地設於烘豆機且受控於驅動器，桶身尾端形成多數環狀排列的入風口，圓錐部形成於桶身頭端且形成一位於中央的出風口，葉片單元環狀排列地設於桶身尾端且葉片單元對應一個入風口，每一葉片單元包含一傾斜板，傾斜板的一端形成於桶身，傾斜板的另一端朝向入風口傾斜，本創作咖啡豆烘豆桶裝於烘豆機，葉片單元在桶身旋轉時帶動熱空氣流動，節省抽風器設置且減少能源耗損，且圓錐部讓熱空氣的流向均勻流過桶身，流動無死角。
