Working principle of Jining Chef's automatic frequency conversion toaster: the motor drives the baking tray to rotate through the household 220 volt power supply or the battery car 48 volt power supply, four infrared burners heat the baking tray through gas, and four infrared burners cooperate with the baking tray to heat the baking tray at 720 degrees, so there is no dead angle in all directions. We adjust the size of the fire through four rotary switches of the fire. Adjust the speed of the baking tray through the speed switch. The oxygen delivery controller continuously delivers oxygen to the oven to make the gas burn completely, save energy and reduce emissions, and protect the atmospheric environment. In this way, the temperature and baking time required by various scones can be accurately controlled, so that scones have better taste, more perfect color and simpler technology, and more than 300 scones can be made every hour, which greatly improves the production efficiency.