Device for heating liquid by fuel oil

The utility model relates to the technical field of liquid heating equipment, in particular to a device for heating liquid by using fuel oil, which is small in size, convenient to disassemble and maintain, and high in heat efficiency, and enables the fuel oil to be combusted more sufficiently by adopting a jet atomization type combustion mode. Comprising an electronic controller shell, an electronic controller, a motor, an oxygen supply wind wheel, a supporting frame, a combustion cylinder, a combustion main body and a cylinder body, the electronic controller shell is connected with the left end of the supporting frame in a screwed mode, the electronic controller is fixed in the electronic controller shell and electrically connected with the motor, and the motor is fixed at the left end of the supporting frame and electrically connected with the combustion main body. The output end of the motor is connected with the oxygen supply wind wheel, an air inlet is formed in the bottom end of the supporting frame, th