External Rotor Permanent Magnet Centrifugal Fan

The External Rotor Permanent Magnet Centrifugal Fan from Zhejiang Rongwen Fan Co., Ltd. is a compact and energy-efficient ventilation solution for HVAC, air handling units, industrial ventilation, and customized air-handling equipment.

It combines a backward-curved centrifugal impeller, external rotor permanent magnet motor, direct-drive structure, and variable-speed control to provide reliable airflow performance with a compact installation design.

Key Advantages

Compact Direct-Drive Design

The external rotor motor is integrated with the fan assembly, eliminating traditional belt and pulley transmission. This reduces mechanical components and helps save installation space, making the fan suitable for compact HVAC and AHU equipment.

High-Efficiency Permanent Magnet Motor

The permanent magnet motor is designed for efficient operation and can help reduce energy consumption compared with conventional motor solutions, particularly when the fan operates under variable-load conditions.

Backward-Curved Centrifugal Impeller

The backward-curved impeller provides stable airflow and pressure performance for a wide range of ventilation applications. Fan size and speed can be selected according to the required airflow and static pressure.

Variable Speed Control

The fan can be used with variable-speed control to adjust airflow according to actual system demand. This makes it suitable for HVAC systems, air handling units, and industrial ventilation systems with changing airflow requirements.

Reliable Mechanical Structure

The fan uses a robust motor and bearing structure designed for stable long-term operation. The direct-drive configuration also eliminates routine belt inspection and replacement.

Applications

Rongwen external rotor permanent magnet centrifugal fans can be used in:

• HVAC systems

• Air Handling Units (AHU)

• Fresh Air Units (FAU)

• Fan Boxes

• Industrial ventilation

• Commercial ventilation

• Air-conditioning equipment

• Customized air-handling equipment

How to Select the Right Fan？？

To select a suitable external rotor centrifugal fan, customers should provide the required airflow, static pressure or total pressure, voltage, frequency, air temperature, installation dimensions, and speed-control requirements.

Rongwen can recommend the appropriate fan size, motor configuration, and operating point based on the customer's application.

External Rotor Centrifugal Fan Manufacturer in China

Zhejiang Rongwen Fan Co., Ltd. is a professional centrifugal fan manufacturer in China, supplying external rotor fans, backward-curved centrifugal fans, axial fans, roof fans, and customized ventilation solutions.

For fan selection or OEM projects, send us your required airflow and pressure, and our engineering team can provide a suitable fan solution.