Air guide mechanism of spiral steaming and baking machine

The air guide mechanism of the spiral steaming and baking machine comprises a machine frame, an upper cover, an upper fixing plate, a motor and a fan, the upper cover is located above the machine frame, the upper cover does linear motion in the vertical direction relative to the machine frame, a cavity with a lower opening is formed in the upper cover, and the fan is located in the cavity and rotates relative to the upper cover. The motor drives the fan to rotate, and the upper fixing plate is located in the cavity and divides the cavity into an upper part and a lower part. The vortex air channel and the conical counterbore are used for accelerating air flow, so that steam can permeate into food to be heated, the heating speed is higher, the internal and external heating degree is more uniform, energy is saved due to steam recycling, and the problems that the taste is influenced by external overheating of the food, the food is easily adhered to a mesh belt, and the energy consumption is large are solved. 本实用新