Fan Inlet Rings

Fan inlet rings are devices used to maximise the performance of fans, such as backward curved centrifugal fans, by guiding air into the impeller blade (the rotating part of a fan) inlet. Using a fan at peak efficiency minimises noise emitted and power consumption from the fan whilst delivering optimal performance.

What are fan inlet rings used for?

Fan inlet rings ensure smooth laminar flow (flow in parallel layers, with no disruption between the layers) of air as it enters the impeller.

How do fan inlet rings work?

Fan inlet rings are usually positioned with the ring surrounding the inlet, and slightly overlapping into the interior. This helps to reduce noise induced by turbulence, eliminate flow disturbances before air is let into the fan and keep power consumption to a minimum for maximum efficiency.

Fan inlet rings also serve the critical purpose of blocking exhaust air from re-entering the air intake. Due to the frequent exposure to atmospheric moisture, fan inlet rings are usually made of materials that don’t rust.


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Beskrivning Pris For Use With Inner Diameter Outer Diameter Depth
RS-artikelnummer 826-0979
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ebm-papst Impeller 180, Forward Curved Centrifugal Fan 149mm 210mm 28mm
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U97EM series fans 34mm 37mm -
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Backward Curved Centrifugal Fan 325mm 330/355mm -
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Centrifugal Fan 123mm 128mm 5mm
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Centrifugal fan 56mm 98mm 87mm
RS-artikelnummer 826-0954
Tillv. art.nr9609-2-4013
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Backward Curved Centrifugal Fan, ebm-papst Impeller 220 155mm 252mm 21mm
RS-artikelnummer 826-0720
Tillv. art.nr54478-2-4013
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Backward Curved Centrifugal Fan 390mm 450mm -
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RS-artikelnummer 191-9261
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Centrifugal Fan 165mm 170mm 14mm
RS-artikelnummer 175-7151
Tillv. art.nrU97XX-009C3
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186,47 kr
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U97EM series fans 34mm 37mm -
RS-artikelnummer 826-0960
Tillv. art.nr96359-2-4013
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Backward Curved Centrifugal Fan, ebm-papst Impeller 250 164.5mm 255mm 31mm
RS-artikelnummer 860-0260
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ebm-papst R4D310-AR 208.1mm 300mm 48mm
RS-artikelnummer 825-6416
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Airflow Measurement - 400mm -
RS-artikelnummer 826-0957
Tillv. art.nr9588-2-4013
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108,36 kr
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ebm-papst Impeller 160, Forward Curved Centrifugal Fan 130mm 185mm 17mm
RS-artikelnummer 826-0948
Tillv. art.nr9576-2-4013
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Backward Curved Centrifugal Fan, ebm-papst Impeller 175/190 125.5mm 170mm 14mm
RS-artikelnummer 825-6365
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Backward Curved Centrifugal Fan 280mm 310mm -
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RS-artikelnummer 191-9264
Tillv. art.nr109-1135
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Centrifugal Fan 155mm 252mm 7mm
RS-artikelnummer 826-0966
Tillv. art.nr96358-2-4013
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Backward Curved Centrifugal Fan, ebm-papst Impeller 225 146mm 223mm 28mm
RS-artikelnummer 826-0944
Tillv. art.nr9566-2-4013
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Backward Curved Centrifugal Fan, ebm-papst Impeller 133 87mm 129mm 13mm
RS-artikelnummer 826-0963
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ebm-papst Motorized Impeller 310 193mm 300mm 43mm
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