Xin Feng Mini Lesson--- Differences Between Multi-Stage and Single-Stage Centrifugal Fans

Everyone must be familiar with centrifugal fan applications.

This equipment serves multiple functions including exhausting air, supplying air, restarting, and propulsion.

During operation, it primarily utilizes the principle of energy conversion—transforming kinetic energy into potential pressure energy, which is then converted into mechanical energy.

Based on the number of impellers, they can be categorized into single-stage and multi-stage centrifugal fans.

While both types operate on the same principle, achieving equivalent pressure in practical operation requires the single-stage fan's impeller speed to be significantly higher than that of a multi-stage fan.

This imposes higher demands on various aspects of the equipment.

Material strength requirements and equipment balancing standards must also be elevated accordingly. Consequently, these fans are more commonly used at low pressures. For high-pressure applications, multi-stage centrifugal fans are recommended.

In comparison, these fans offer distinct operational advantages.

For instance, during rotation, they not only delay wear on rotating components and maintain extended service life but also simplify maintenance requirements.

Furthermore, during normal operation of single-stage centrifugal fans, excessively high rotational speeds not only accelerate component wear but also generate significant noise. Simultaneously, stability becomes compromised, necessitating compliance with stringent balancing requirements.

Additionally, the structural design of single-stage centrifugal fans is relatively complex, making operation challenging and reducing practicality.

Consequently, in practical applications, multi-stage centrifugal fans are more popular among users and see wider adoption.