A system of rotating blades powered by an electric motor, traditionally connected via a belt and pulley system, circulates air within a room. This mechanism offers a quieter operation compared to direct-drive systems where the blades are mounted directly to the motor.
The belt-driven design allows for larger, slower-moving fan blades, creating a gentler, more expansive airflow. This mechanism also contributes to energy efficiency as the reduced rotational speed consumes less power. Historically, this was the predominant method for powering ceiling fans, showcasing a robust and reliable design that has served for generations. Its enduring popularity underscores the effectiveness and practicality of this approach to air circulation.