Anglais
Allemand
Arabe
FrançaisCurrent
Indonésien
Japonais
Coréen
Le malais
Le portugais
russe
espagnol
Thaïlandais
Le turc
Le vietnamien
Cleanroom équipement pièces de rechange
FFU Fan Impeller
A balanced backward-curved centrifugal wheel that replaces a damaged or contaminated FFU impeller while retaining the existing motor and housing.
- Backward-Curved Blades
- Low-Profile FFU Geometry
- Balanced Rotating Assembly
- Matched Hub Interface
Introduction de produit
The FFU fan impeller converts motor rotation into the pressure and airflow required to move room air through the final filter. Its shallow centrifugal geometry suits the limited plenum depth of a ceiling-mounted fan filter unit. Backward-curved blades, a formed inlet rim and a rigid backplate guide air through the wheel while limiting recirculation. Replacement selection must match the original outside diameter, wheel depth, rotation direction, hub bore and motor speed so the assembled fan operates within its intended airflow range.
Key Features
A shallow wheel profile fits compact ceiling FFU housings without obstructing the inlet path.
The formed rim and rigid backplate retain blade spacing during high-speed rotation.
Machined hub options match common direct-drive motor shafts and fastening methods.
Préoccupations du client produit
Impeller geometry and balance directly affect FFU airflow, sound and motor loading.
A wheel with the wrong diameter or depth changes the fan operating point.Replacement dimensions are matched to the original wheel envelope and FFU inlet clearance.
Incorrect blade direction produces weak airflow and excessive turbulence.Clockwise or counter-clockwise blade orientation is selected for the installed motor rotation.
Hub mismatch causes runout or prevents secure shaft attachment.Bore, keyway, set-screw and bolt pattern options are configured for the original drive shaft.
An unbalanced replacement transmits vibration to the filter and ceiling grid.The completed wheel is balanced as a rotating assembly after blade and hub fabrication.
Les applications typiques
Cleanroom ceiling fan filter unitsLaminar-flow workstationsMini-environment circulation modulesFFU preventive-maintenance replacement
Paramètres techniques
Typical construction ranges for low-profile FFU centrifugal impellers are shown below.
| Matériaux de base | Formed aluminum alloy or galvanized-steel backward-curved blade assembly |
|---|---|
| Panneau épaisseur | 60-180 mm nominal wheel depth |
| Largeur effective | 250-500 mm nominal outside diameter |
| Longueur maximale | Up to 500 mm overall impeller diameter |
| Acier face épaisseur | 0.8-1.5 mm formed sheet-metal blades and backplate |
| Densité Core | 2700 kg/m³ for aluminum or 7850 kg/m³ for steel components |
| Conductivité thermique | 160-205 W/(m·K) for aluminum or 45-60 W/(m·K) for steel |
| surface finie | Natural aluminum or corrosion-resistant zinc-coated silver finish |
| Type joint | Formed blade tabs or welded blade roots with machined bolted or set-screw hub |
| Customisation | Disponible en fonction de l'application prévue et de l'environnement d'exploitation. |
Options disponibles
Aluminum or galvanized-steel constructionClockwise or counter-clockwise rotationCustom hub bore and fasteningMatched diameter and wheel depth
Planning a FFU Fan Impeller specification?
Envoyez-nous vos dimensions, conditions d'installation, objectifs de performance et finition de surface requise.
