The utility model relates to a premixed coffee bean baking machine,Including an organismOne drumOne burnerOne gas valveA blower and a controller；The body is provided with a heating chamber；The drum is rotatably arranged on the body and is located in the heating chamber；The burner is arranged in the body,And is located under the heating chamber,The burner provides combustion gas to generate flame to heat the drum；The gas valve is connected with the burner,And the gas quantity transmitted to the burner is regulated by the control；The blower is connected with the burner,And being controlled to adjust the amount of air delivered to the burner；The controller is electrically connected with the gas valve and the blower,To control the operation of the gas valve and blower.Thus, during the process of taking and placing coffee beans, the burner can still maintain the state of generating flame.一種預混式咖啡豆烘焙機，包括有一機體、一滾筒、一燃燒器、一瓦斯閥、一鼓風機以及一控制器；該機體具有一加熱室；該滾筒係可轉動地設置於該機體且位於該加熱室中；該燃燒器設置於機體中，且位於該加熱室下方，該燃燒器供燃燒瓦斯產生火焰以對該滾筒加熱；該瓦斯閥連通該燃燒器，且受控制而調節輸送至該燃燒器的瓦斯量；該鼓風機連通該燃燒器，且受控制而調節輸送至該燃燒器的空氣量；該控制器電性連接該瓦斯閥與該鼓風機，用以控制該瓦斯閥及鼓風機之運作。藉此，於取放咖啡豆之過程中，該燃燒器仍可維持於產生火焰之狀態。
