Bifurcated fans are designed to keep the motor out of the airstream preventing it from being damaged or clogged by the pollutants being ventilated.
Bifurcated Axial fans are used in challenging environments where a normal axial fan would encounter significant problems- typically in high ambient temperatures (higher than the motor is rated for), corrosive or heavily polluted atmospheres.
Bifurcated fans - also known as BIF Fans or Bifs - are an inline axial fan designed with a split airway, where the motor is mounted inside a tunnel or enclosure so that it is shielded from the detrimental air conditions. This motor shielding encloses the motor, separating it from the air that is flowing through the fan. The bifurcated design protects the motor from hot, abrasive or corrosive air, prolonging its life and reducing maintenance needs.
BIFs are used to exhaust a wide variety of hot gases, paint fumes, smoke, steam and suspended dust or fibres. Ideal for medium to high volume applications with low pressure development. However, as this fan variant uses a bifurcated casing design, this will reduce fan efficiency, meaning that in some cases a larger unit might be needed to achieve the required air movement.
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