The difference between roots blower and centrifugal fan
2021-10-14
Summary
The difference between roots blower and centrifugal fan Roots fan is a positive displacement fan. The delivered air volume is proportional to the number of revolutions. A small gap is always maintained between the end face of the impeller and the front and rear end covers of the fan and between the fan impeller. Driven by the synchronous gear, the downwind is transported from the air inlet of the fan along the inner wall of the shell to the discharge side. Centrifugal fan is to rely on the input of mechanical energy, improve the gas pressure side by side to send gas machinery, it is a kind of driven fluid machinery. Centrifugal fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings ventilation, dust and cooling; boilers and industrial furnaces ventilation and
Roots blowerDifference with centrifugal fan
Roots blowerIt is a positive displacement fan. The delivered air volume is proportional to the number of revolutions. A small gap is always maintained between the end face of the impeller and the front and rear end covers of the fan and between the fan impeller. Driven by the synchronous gear, the downwind is transported from the air inlet of the fan along the inner wall of the housing. To the discharge side.
Centrifugal fan is to rely on the input of mechanical energy, improve the gas pressure side by side to send gas machinery, it is a kind of driven fluid machinery. Centrifugal fans are widely used for ventilation, dust discharge and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced air of boilers and industrial furnaces;
Roots blowerwith centrifugal fan of distinction:
1. The working principle is different. The centrifugal fan uses curved blades to throw the gas to the casing by centrifugal force, andRoots blowerTwo 8-shaped blades are used. The gap between them is very small. The gas is squeezed to the air outlet by the extrusion of the two blades.
2. Due to different working principles, their working pressures are generally different,Roots blowerThe outlet pressure is relatively high, while the centrifugal fan is relatively small.
3. The air volume is different, generallyRoots blowerIt is used in places where the air volume requirement is small but the pressure requirement is high, while the centrifugal fan is used in places where the pressure requirement is low and the air volume requirement is large.
4. The manufacturing precision is different,Roots blowerThe required precision is very high, the assembly requirements are also very strict, and the centrifugal fan is relatively loose. Of course, there are some small differences will not be said.
5. If the load needs constant flow effect, use Roots blower. Because Roots blower is a constant flow fan, the main parameter of work is air volume, the output pressure changes with the change of pipeline and load, and the air volume changes very little.Roots blowerIt is a high-pressure fan. Roots blower is a volumetric fan. The air volume delivered is proportional to the number of revolutions, and the gas is delivered from the suction side to the discharge side. If the load requires a constant pressure effect, use a centrifugal fan. Because the centrifugal fan is a constant pressure fan, the main parameter of the work is the wind pressure, the output air volume changes with the change of the pipeline and the load, and the wind pressure changes little. Centrifugal fan, wind pressure is not big. The compression process of air is usually carried out under the action of centrifugal force through several working impellers (or several stages). Centrifugal fans are squared torque characteristics, andRoots blowerBasic constant torque characteristics.
6. Generally speaking, Roots blowers have relatively large air volume and relatively large pressure. SimilarlyRoots blowerThe noise is also very high. If the air volume is relatively small and the noise requirement is relatively high, the rotary blower is selected. The rotary blower is also a constant flow fan. The main working parameter is the air volume. The output pressure changes with the changes of the pipeline and load. The air volume changes very little. The rotary fan is variable volume compression. Its main characteristics are: low speed, low noise, low vibration, high efficiency and high energy saving.
Previous:
Contact Us
E-mail:
sanniu888@126.com
Telephone:
400-6531-228/0086-531-83288777
Address:East Industrial Park, Xianggong Sub-district Office, Zhangqiu District, Jinan City, Shandong Province