Backward curved centrifugal fans

Plug fans are radial fans with backward-curved blades. They are characterized by extremely high static pressure and a compact design.

Technical specifications of centrifugal fans

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Advantages

We recommend using radial fans for projects that require high efficiency with high resistance in the installation.

High static pressure and efficiency

Centrifugal fans with backward curved blades are compact, flexible industrial fans that provide high airflow efficiency at high static pressure.

Universality

Plug-in centrifugal fans achieve high static pressure for large airflows. Their compact design and high efficiency make them popular for ventilation systems.

Durability and efficiency

The fans manufactured by AFL are designed for efficient and comfortable use. This range includes models that ensure quiet, failure-free operation and are made from high-quality components and subassemblies.

EC motors :
The future of ecology

Centrifugal fans can be equipped with various types of motors, including AC, EC, and DC, allowing them to adapt to different power supplies. The EC motor stands out as the most economical and efficient option among these. This electronically commutated brushless motor (EC) offers excellent performance, high efficiency, and easy regulation, leading to significant long-term savings.
The EC motor is recognized for its dependable, quiet performance and complies with contemporary ecological standards. Centrifugal fans with backward curved blades paired with EC motors are ideal for applications requiring high airflow and high static pressure.

New Ecodesign requirements for industrial fans

According to Regulation (EU) 2024/1834, starting July 24, 2026, fans sold in the EU, with some limited exceptions, must comply with the new ecodesign standards.

An additional one-year transition period is available for fans integrated into other products, provided they meet certain transitional conditions. The regulations allow HVAC manufacturers to continue using existing solutions until July 2027. After that date, only energy-efficient EC fans that meet the new efficiency and environmental standards will be permitted.

AFL MOTORS is prepared for these changes and offers comprehensive consulting and support for implementation.

Technology


  • Backward curved blandes- plug fan

    Centrifugal fans blow air outward from the impeller, perpendicular to the axis of rotation of the motor. In opposite to forward curved impellers, backward curved impellers have fewer, longer blades.  The blades rotate in the opposite direction to their movement.

    Backward curved impellers require higher rotational speeds than forward curved impellers. They generate pressure in a way that makes them more efficient. This design also makes them less likely to overload the motor.

Application

  • Air handling units
  • Heat recovery units
  • Air purifiers
  • Roof fans
  • Ventilation of industrial facilities

Radial fans provide strong airflow and static pressure. Their compact design makes them easy to use in many applications. These fans are especially good at overcoming resistance in ventilation units, air purifiers, heat recovery systems, air conditioning, and industrial ventilation.

Use our documentation

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Declarations of conformity Design and usage tips Fans operating manual Fans catalogue

Industry articles

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