Roots Blower
roots blower is a type of positive displacement pump used to move air or gas by trapping a certain volume of it and forcing it from the inlet to the outlet. It’s named after its inventors, the Roots brothers, and operates on a simple principle: two rotating lobes, or rotors, turn in opposite directions inside a casing. These lobes don’t touch each other or the casing but form small pockets of air or gas that are pushed from the inlet to the outlet as they rotate.
Features
- Positive Displacement: Moves a constant volume of air with each revolution.
- No Compression Inside the Pump: Unlike compressors, a roots blower doesn’t compress air within the machine itself; compression happens only once the air is expelled into the system.
- Rotors: Typically two or three-lobed rotors rotate inside the housing.
- Oil-Free Air: Many roots blowers are designed to provide oil-free air as they are often used in industries requiring clean air.