Centrifugal fans from ebm-papst are available with forward or backward curved blades. The low-noise centrifugal fans and blowers with forward curved blades are also supplied with aspiral housing. The centrifugal fans with backward curved blades are designed as free-wheeling fans and do not require a scroll housing. For the centrifugal fans with external rotor motors, the motor is positioned in the impeller, which results in an especially compact design in addition to optimal cooling of the motor. The entire product line is available in both AC and GreenTech EC technology.
The outstanding feature of our centrifugal fans with forward curved blades is their minimum noise level and high power density. They are used wherever a large air volume has to be moved in a tight space. To adapt to the aerodynamic and geometric requirements, the impellers are arranged in singleinlet or dual-inlet form. Due to the large number of impeller blades, fans with forward curved impellers have a “pleasant” noise characteristic, which makes them particularly suited for applications in ventilation technology. Depending on the size and application, the scroll housings of these fans are made of sheet steel, plastic or die-cast aluminium. To optimise the efficiency, in addition to the voltage-controlled asynchronous motors, the particularly efficient GreenTech EC motors are used. Thus both drive types are available over the entire power range.
