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Five differences between Roots blowers and centrifugal blowers

Roots blowers and centrifugal blowers are two common blower types that are widely used in industrial and mechanical fields. Their main differences are as follows:


1. Working criteria:

Roots blower: is a centrifugal positive pressure blower consisting of two triangular spiral blades rotating against each other, used to suck gas or a mixture of gases from one place and pipe it to another. Gas or gas particles are sucked in by the movement of the rotating screw and then pushed out by the rotation of the screw. Roots blower is characterized by large gas flow and stable pressure, but compared with centrifugal fans, its pressure is relatively low.

Centrifugal turbo blower : It is composed of one or more impellers, through high-speed rotation to produce air flow, suction gas and generate pressure under the action of centrifugal force, and then through the pipeline to transport the gas to another place. Centrifugal turbo blowers are characterized by relatively high pressure, but relatively small airflow.


2. Pressure and flow characteristics:

Roots blowers: Roots blowers are typically used in applications that require high pressure differences and relatively low flow rates to provide a stable airflow.

Centrifugal turbo blower: Centrifugal turbo blower performs better at higher flow rates and lower pressure differentials, allowing for greater airflow.


3. Operating efficiency:

Roots blower: Due to its working principle, Roots blower will produce a large internal leakage during operation, resulting in loss, so the efficiency is low.

Centrifugal turbo blower: Centrifugal turbo blowers are generally more efficient, especially at high speeds.


4. Noise and Vibration:

Roots blower: Due to its structural characteristics, Roots blower generally produces high noise and vibration.

Centrifugal turbo blower: Centrifugal turbo blower have low noise and low vibration, especially at high speed.


5. Application field

Roots blowers are usually used in gas pressurization, ventilation, waste gas treatment, material transportation and other industrial fields, and can also be used in water treatment, dust removal, food processing and other fields. Roots blower is widely used in many industries for its advantages of high efficiency, energy saving, low noise and easy maintenance.

Centrifugal turbo blowers are widely used in industry, construction, mining, shipbuilding, transportation and other fields, for ventilation, air exchange, gas transmission, flue gas emission and so on. Centrifugal blowers have a variety of different types and sizes, which can be selected according to different uses.


According to the specific application and demand. Choosing the right type is very important. The above are some differences between Roots blowers and centrifugal blowers, please choose and apply according to the specific situation. If you have any questions, please contact us right now.