Roots Blower

A roots blower pump is a positive displacement rotary lobe pump that operates by pumping a fluid with a pair of meshing lobes not unlike a set of stretched gears. Fluid is then trapped in pockets surrounding the lobes and carried from the intake side to the exhaust.

Roots Blower

Why is the rotary lobe blower called a “Roots Blower”?

The positive rotary lobe blower was designed in the 1850s by the Francis and Philander Roots brothers. It was later patented in 1860 by the brothers and the Roots name became the name of the design.

How does a “Roots Blower” operate?

A Roots blower operates using the isochoric compression principle, also known as external compression. The pressure increase is achieved by intermittently transporting a gaseous medium (e.g. atmospheric air) into a system.