Our range of ring fans are suitable for use with heat exchanges upstream and an engine bay downstream. Because of the blade stiffness ring fans offer structural integrity. Ring fans also provide installation advantages. Explore our range of ring fan solutions or contact us to discuss your requirements.
AF5-R Engine Cooling Fan
Are ring fans quieter than open bladed fans? Well there’s a good question and one that’s not easy to answer. So, where is the noisiest part of a fan, arguably it is the tip of the blade on the trailing edge. Here the flow is turbulent, recirculating and most of the work is done. So does sealing the ends of the blades with a ring help, in short yes it helps prevent some of the recirculation but no it wont make your fan whisper. Please get in touch for more info.
AF10-R Engine Cooling Fan
Ring fans appear to be running in a duct, however they are not ducted. “Ducted Fans” are typically referring to the inlet and outlet conditions of the fan. Most ducted fans are used for HVAC applications and are lower pressure; aerofoil shaped blades are popular for ducted fans. The ring fans in our range are typically used with heat exchangers upstream and an engine bay downstream. These are much higher pressure. The rings purpose is for structural integrity, blade stiffness and installation advantages then looking at the total flow.
AF30-R Engine Cooling Fan
Large diameter ring fans are common place on many on highway trucks, and so are complex shroud geometries to trap and direct that flow where you want it. Large design budgets and very high production volumes allow for engine mounted cowls that move with the engine, allowing very tight tip clearance between the fan and the shroud and therefore much improved efficiencies to the overall flow. Even if your production volumes are 100’s not 100’000’s this is something you should consider.