In a vacuum cleaner, the most common type of fan used is the centrifugal fan (also known as a radial fan or squirrel cage fan). Centrifugal fans are designed to move air perpendicular to the shaft, creating a high-pressure airflow. They are efficient in generating suction or vacuuming power, making them suitable for use in vacuum cleaners.
Axial fans, on the other hand, are designed to move air parallel to the shaft, and they are commonly used in applications where high airflow is needed but not necessarily high pressure, such as cooling electronic components or ventilating enclosed spaces.
In summary, vacuum cleaners typically use centrifugal fans to create the necessary suction for effective cleaning.