Blower Fans
Blower fans are electric powered industrial blowers that also have rotating metal fan blades. These fans are used for various industrial applications, most commonly for drying, heating or cooling. Manufacturing facilities, hospitals, building construction sites and schools often employ blower fans for warmth when heating systems aren't available or for drying applications like quickening an interior painting job. The housings are manufactured so that they may stand in a number of different positions-for example, a blower fan may stand regularly, lay on its back, or be pointed at different angles. These fans often have a hub as part of the housing, which is a smaller opening that directs more concentrated and powerful airflow to a specific location.
The housings for blower fans are either made out of metal like stainless steel or aluminum, or a durable and heat-resistant plastic material like polyurethane. Fans without hubs and larger fan blades, which are usually used for cooling or drying, have wire safety guards made out of aluminum to protect those who work around blower fans. To minimize noise, the blades are constructed so that the outermost blade points are farther away from each other than in the center. Many have a capacitor and thermal cutoff protection in case of overheating. Most blower fans are able to stack on each other. They are powered by a heat-resistant motor and have multiple speed options.