What is the purpose of cone in id fan?

The cone in an ID (Induced Draft) fan serves to streamline airflow and enhance the efficiency of the fan's operation. It helps to direct the exhaust gases more effectively into the fan, reducing turbulence and increasing the velocity of the air being drawn through the system. This design aids in improving the overall performance of the fan while minimizing energy consumption and noise levels. Additionally, it contributes to better mixing of the flue gas, ensuring more efficient combustion processes in industrial applications.