Rosenberg offers a wide range of centrifugal fans for numerous applications. In addition to different casing designs, Rosenberg centrifugal fans are offered in both single and double-sided inlet design. In addition, the fans are also available with different drives. Energy-saving EC external rotor motors, conventional AC external rotor motors as well as IEC standard motors are used.
A distinction is also made between fans with forward or backward curved impellers.
Backward Curved
| Range | Type | Applications |
|---|---|---|
| EC-Centrifugal fans with backward curved centrifugal impellers | EHAG… | In this series, only energy efficient EC external rotor motors are used for the drive. The high-performance centrifugal fans with backward curved blades are specially designed for use in modern ventilation and air conditioning equipment, and are suitable for the conveying of slightly dusty air and slightly aggressive gas and vapours. The sizes correspond to the standard number series R20 according to DIN323. |
| Centrifugal fans with backward curved centrifugal impellers | E/DHA… | These centrifugal fans have been developed especially for use in modern ventilation and air-conditioning equipment, and are suitable for the conveying of slightly dusty air and slightly aggressive gas and vapours. The sizes correspond to the standard number series R20 according to DIN232. |
| Centrifugal fans with IEC standard motor and backward curved centrifugal impellers | EHN… | The high performance centrifugal fans of the EHN… series are suitable for the conveying of clean or slightly dusty air and slightly aggressive gas and vapours. They are not gas-tight. The permissible conveying medium temperature is between -30°C and 60°C. |
Forward Curved
| Range | Type | Applications |
|---|---|---|
| Centrifugal fans with forward curved centrifugal impellers | E/DRA… | These centrifugal fans have been developed especially for use in modern ventilation and air-conditioning equipment, and are suitable for the conveying of slightly dusty air and slightly aggressive gas and vapours. The sizes correspond to the standard number series R20 according to DIN232. |
| High efficiency Centrifugal fans with slippage characteristics | E/DRA… | By using specially designed external rotor motors with high rotor resistance, we have developed a range of centrifugal fans with extremely high slippage character in conjunction with forward curved centrifugal impellers. The external rotor motor adjusts its operating behaviour to the respective loads and this changes the speed dependent on the total pressure. This is particularly advantageous in systems where resistances vary during operation such as, for example, with dirty filters, controlled dampers in the connection and disconnection of duct installations as well as for cleanroom applications. |
| Centrifugal fans with IEC standard motor and forward curved centrifugal impellers | ERN… |
The high performance centrifugal fans of the ERN… series are suitable for the conveying of clean or slightly dusty air and slightly aggressive gas and vapours. They are not gas-tight. The permissible conveying medium temperature is between -30°C and 60°C. |