Roots Blower and Centrifugal Fan are two common types of fans, which are widely used in industrial and mechanical fields. Their main differences are as follows: 

1. Working principle:

• Roots blower: is a centrifugal positive pressure blower, which consists of two triangular helical blades that rotate with each other, And is used to suck gas or gas mixture from one place and transport it to another place through pipes. Gas or gas particles are drawn in by the movement of the rotating screw and then pushed out due to the rotation of the screw. The Roots blower is characterized by large gas flow and stable pressure.But compared with the centrifugal fan, its pressure is relatively low.
• Centrifugal fan: The centrifugal fan is composed of one or more impellers, which generate air flow by rotating at high speed, suck the gas and generate pressure under the action of centrifugal force.And then transport the gas to another place through the pipeline. Centrifugal fans are characterized by relatively high pressure, but relatively small gas flow.

2. Pressure and flow characteristics:

•  Roots blowers: Roots blowers are typically used in applications requiring a high differential pressure and relatively low flow rates, capable of providing a steady flow of gas.
• Centrifugal fans: Centrifugal fans perform better at higher flow rates and lower pressure differentials, allowing greater gas flow.

3. Operating efficiency:

• Roots Blower: Due to its working principle, Roots Blower generates high internal leakage during operation, resulting in losses.So its efficiency is relatively low.
• Centrifugal fans: Centrifugal fans are generally more efficient, especially at high speeds.

4. Noise and vibration:

• Roots blowers: Due to their structural characteristics, Roots blowers generally produce high noise and vibration.
• Centrifugal fans: Centrifugal fans have low noise and vibration, especially at high speeds.

5. Application field

• Roots blowers are usually used in industrial fields such as gas pressurization, ventilation, waste gas treatment, material transportation, etc.And can also be used in water treatment, dust removal, food processing and other fields. Roots blowers are widely used in many industries due to their high efficiency, energy saving, low noise and easy maintenance.
• Centrifugal fans are widely used in industry, construction, mining,shipbuilding, transportation and other fields for ventilation, ventilation, gas transportation, flue gas discharge, etc. Centrifugal fans come in many different types and sizes, which can be selected according to different application needs.

Summarize

Depending on the specific application and needs.It is important to choose the right fan type. The above are some differences between Roots blower and centrifugal blower, please choose and apply according to the specific situation.

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