What are the differences between high-pressure fan and Roots fan?

What are the differences between high-pressure fan and Roots fan? High pressure fan and Roots fan are common fan types, and they have some differences in structure, working principle, use scenario and maintenance requirements. The following are their main differences:

Working principle: High pressure fan provides gas pressure through high-speed rotating impeller. It is suitable for occasions requiring high pressure and large flow, but the operation noise is large. Roots blower, on the other hand, uses the volumetric principle to absorb gas through the rotating impeller, and increases the pressure by changing the gas volume. It is suitable for occasions requiring relatively stable pressure, small flow and low noise.

Structural features: The high-pressure fan has a complex structure with many impellers, which is usually composed of multiple impellers, requiring more parts and more complex maintenance work. The roots blower has a simple structure, consisting of two roots impellers, and its interface is also simple.

Usage scenario: High pressure fan is suitable for occasions requiring high pressure and large flow, such as food, power, machinery and other industries. Roots blower is suitable for some special occasions, such as chemical, pharmaceutical and other industries that need low noise and low pressure.

Operating efficiency: the operating efficiency of Roots blower is usually higher than that of high-pressure blower, because the design of Roots blower makes the pressure relatively low and part of the operating energy consumption is reduced.

Price and maintenance cost: Generally speaking, the price of high-pressure fan is relatively low, while the price of Roots fan is relatively high. However, in consideration of factors such as operating efficiency and energy consumption, the maintenance cost of Roots blower may be lower than that of high-pressure blower in the long run.

To sum up, high-pressure fan and Roots fan have their own characteristics and application scenarios, which need to be selected according to specific needs.