Roots Vacuum Pump

Root vacuum pumps, also known as Roots blowers or simply Roots pumps, are a type of positive displacement pumps commonly used in various industrial and scientific applications to generate vacuum or low-pressure environments. They were invented by the brothers Philander H. and Francis M. Roots in the 19th century and have since become widely used in different fields.

​

The working principle of a root vacuum pump involves two figure-eight-shaped rotors or lobes that rotate in opposite directions within a housing. The lobes intermesh without actually touching each other or the pump housing, creating a series of expanding and contracting chambers. As the rotors rotate, the chambers draw in gas or fluid from the inlet side and exhaust it from the outlet side. The process is continuous and produces a pulsating flow.