A Roots blower is a type of positive displacement blower that uses two rotating lobes (or rotors) to move air or gas from one point to another. It’s essentially a machine that traps a fixed volume of air and moves it without significant compression within the blower itself.
Here’s a more detailed explanation:
Positive Displacement:
Unlike centrifugal blowers that rely on centrifugal force to move air, Roots blowers trap and move a specific volume of air with each rotation of the lobes.
Rotor Design:
The two lobes are designed to intermesh and rotate in opposite directions, creating pockets that trap air and transport it from the intake to the outlet.
No Internal Compression:
While Roots blowers move air under pressure, they don’t compress the air within the blower itself.
Constant Airflow:
They deliver a relatively constant airflow, making them suitable for applications requiring a steady air supply.
Applications:
Roots blowers are used in various applications, including pneumatic conveying, wastewater treatment, and as superchargers in some engines.
Efficiency Considerations:
Due to the lack of internal compression, Roots blowers are generally more efficient at lower pressure applications and may have limitations in higher pressure scenarios.
