The present invention relates to a drone for spraying agricultural chemicals and a method for spraying agricultural chemicals using the same. An objective of the present invention is to provide a drone for spraying agricultural chemicals and a method for spraying agricultural chemicals using the same which circulate and spray a portion of agricultural chemicals transported to a composite nozzle into a storage tank to create a vortex in the storage tank to prevent agricultural chemical sediment from being created in the storage tank when spraying agricultural chemicals, and efficiently detect a collision obstacle located on a moving path of a drone to safely fly the drone to an agricultural chemical spray target area to spray agricultural chemicals. The drone for spraying agricultural chemicals comprises: a flying body positioned to have a prescribed height from the ground by support legs; a plurality of rotors connected and installed to be radially positioned around the flying body to allow flight of the flying body; an agricultural chemical storage container including an agricultural chemical spray unit installed on a lower side of the flying body to be positioned between the support legs, wherein the agricultural chemical spray unit is detachably installed; a plurality of composite nozzles to receive agricultural chemicals in the agricultural chemical storage container to spray the agricultural chemicals; an agricultural chemical transport unit to transport the agricultural chemicals in the agricultural chemical storage container to the composite nozzles; and an agricultural chemical circulation spray unit which is installed to be connected to the agricultural chemical transport unit and the agricultural chemical storage container, and circulates a portion of the agricultural chemicals supplied to the composite nozzles from the agricultural chemical storage container to spray the portion of the agricultural chemicals into the agricultural chemical storage container. Agricultural chemicals can be sprayed while avoiding a collision obstacle.

본 발명은 농약 살포용 드론과 이를 이용한 농약살포방법에 관한 것으로, 그 목적은 복합노즐로 이송되는 농약의 일부를 저장탱크내로 순환분사하여, 저장탱크내에 선회류를 발생시킴으로써, 농약살포시에 저장탱크내에 농약침전물이 발생되지 않고, 드론의 이동경로상에 위치하는 충돌장애물을 효율적으로 감지하여 농약살포대상지로 드론을 안전하게 비행시켜 살포할 수 있는 농약 살포용 드론과 이를 이용한 농약살포방법을 제공하는 것이다. 본 발명은 지지다리에 의해 지면으로부터 소정높이를 구비하도록 위치하는 비행본체부; 비행본체부를 중심으로 방사상으로 위치하도록 연결 설치되어 비행본체부의 비행이 이루어지도록 하는 복수의 로터부; 지지다리 사이에 위치하도록 비행본체부 하측에 설치되는 농약살포부를 포함하되, 상기 농약살포부가 착탈가능하게 설치되는 농약저장통; 농약저장통내의 농약을 공급받아 살포하는 복수의 복합노즐; 농약저장통내의 농약을 복합노즐로 이송하는 농약이송부; 농약이송부와 농약저장통에 연결되도록 설치되고, 농약저장통에서 복합노즐로 공급되는 농약의 일부를 순환시켜 농약저장통내로 분사시키는 농약순환분사부을 포함하도록 하여, 충동장애물을 회피하면서 농약살포가 이루어지도록 되어 있다.