Coffee Roasters and discloses a control method. Coffee roaster and the plurality of through holes, and an outlet formed in the bottom, and the cylindrical chamber that holds the coffee saengkong, the inlet for introducing the coffee saengkong is provided, and the cover over the top of the chamber, coffee saengkong input switch for opening and closing the inlet and, with the roasted coffee beans discharge switch for opening and closing the outlet, is installed in the inner chamber is provided below the bottom surface of the vertical rotary blade agitator, a heater and a chamber provided in the cover for agitating the coffee saengkong through the plurality of through holes sucking the air within the chamber comprises a cyclone and the ejector, and the temperature sensor, the control unit installed in the inner chamber for discharging. And the control unit controls the heater to pre-heat the chamber interior through the temperature sensor to the pre-heating temperature, and controlling the input switch to input the coffee saengkong a preheated chamber through the inlet, so that the coffee through the agitator saengkong evenly uniformly heating heater by controlling the roasting of coffee and saengkong, by opening the input switch off the heater in a state so as to lower the roasting temperature for suppressing the cracking in the subsequent cracking roasting process and operating the ejector out of the cyclone chamber cold air inlet - inside the chamber - chamber and the bottom slope through holes to flow from top to bottom in the order, when the roasting is finished executes the program to control the discharge switch is opened to discharge the roasted coffee beans to an external binary.커피 로스터 및 그 제어방법을 개시한다. 커피 로스터는 바닥에 다수의 통공 및 배출구가 형성되고, 커피생콩을 담는 원통형 챔버와, 커피생콩을 투입하기 위한 투입구가 설치되고, 챔버의 상부를 덮는 덮개와, 투입구를 개폐하기 위한 커피생콩 투입 개폐기와, 배출구를 개폐하기 위한 볶은 커피콩 배출 개폐기와, 챔버 내부에 설치되어 커피생콩을 교반하기 위한 수직축 회전날개 교반기와, 덮개에 설치된 히터와, 챔버의 바닥면 하방에 설치되어 다수의 통공을 통하여 챔버 내부의 공기를 흡입하여 배출하기 위한 사이클론 배출기와
