The present invention relates to a semi-hot-air coffee roaster using near infrared rays which roasts coffee beans promptly and uniformly through a dual system using near infrared rays and hot air by heating the sucked external air through a heating drum having a plurality of protrusion parts, a near infrared ray heater including a duct which is inserted into the heating drum to supply hot air to the heating drum, and a core heater which sucks in an external air, thereby heating the hot air through the duct, and which realizes uniform roasting by automatically controlling roasting in a state that a temperature sensor mounted on the heating drum and an embedded system mounted on a housing that encircles the heating drum are connected with each other, thereby automatically controlling roasting. As a coffee roaster including a heating drum (100), a housing (200) which encircles the heating drum (100), and an operating part which is linked to the heating drum (100) and the housing (200), a semi-hot-air coffee roaster using near infrared rays is characterized in that: the heating drum (100) is mounted within the housing (200) to be rotated, the heating drum (100) is formed such that the heating drum (100) has a sealed space for containing coffee beans, an opening part (130) is formed in one side of the heating drum (100), and a near infrared ray heater (320) is mounted on the other side of the heating drum (100)； and a duct (330) in which plural exhaust holes are formed to supply hot air through the exhaust holes is mounted on the top of the near infrared ray heater (320) to roast coffee beans using near infrared rays and hot air.본 발명은 다수의 돌출부를 갖는 가열 드럼과, 상기 가열 드럼에 삽입되고 열풍을 공급하기 위한 덕트를 구비한 근적외선 히터와, 외부 공기를 흡입하고 코어 히터를 통해 가열하여 상기 덕트를 통해 열풍을 가함으로써, 근적외선과 열풍을 이용한 이중방식으로 커피 원두를 신속하고 균일하게 로스팅하며； 가열 드럼에 장착된 온도센서와 상기 가열 드럼을 감싸는 하우징에 장착된 임베디스 시스템을 연계하여 자동으로 로스팅 컨트롤을 하여 균일한 로스팅을 구현하는 근적외선을 이용한 반열풍식 커피로스터에 관한 것이다.
