Centrifugal blowers utilize the centrifugal force generated by a working rotating wheel equipped with many blades to squeeze air to achieve a certain air volume and pressure. So what is the difference between a Roots blower and a centrifugal blower?
1, the working principle is different:
Roots blower is a type of volumetric fan, which relies on the rotation of the impeller to realize air transfer. A tiny gap is always maintained between the impeller of the Roots blower and the inner wall of the casing, between the impeller and the wall plate, and between the impeller and the impeller, so that the gas can be transported from the inlet of the Roots blower along the inner wall of the Roots blower casing to the discharged side under the drive of the synchronized gears.
The centrifugal blower works similarly to a centrifugal ventilator. Through the rotation of the high-speed rotor to drive the air high-speed movement, the use of centrifugal force so that the air in the involute shape of the casing, along the involute flow to the fan outlet.
2. Different working parameters and places of use:
Roots blowers are constant-flow positive displacement blowers, and the main parameter of operation is airflow. The output pressure of the Roots blower changes with the change of piping and load, while the air volume changes very little. Centrifugal blowers are constant-pressure blowers, where the main parameter of operation is pressure, and the output air volume varies with the piping and load, with little change in pressure. Therefore, if the load requires a constant flow effect, the Roots blower is the preferred choice. If the load needs very pressure effect, centrifugal blower is more excellent.