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Equipamento de sala limpa Peças de reposição
FFU Fan Impeller (em inglês)
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
Introdução do produto
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.
Características-chave
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.
Preocupações do produto do cliente
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.
Aplicações típicas
Cleanroom ceiling fan filter unitsLaminar-flow workstationsMini-environment circulation modulesFFU preventive-maintenance replacement
Parâmetros técnicos
Typical construction ranges for low-profile FFU centrifugal impellers are shown below.
| Material principal | Formed aluminum alloy or galvanized-steel backward-curved blade assembly |
|---|---|
| Painel de espessura | 60-180 mm nominal wheel depth |
| Largura efetiva | 250-500 mm nominal outside diameter |
| Comprimento máximo | Up to 500 mm overall impeller diameter |
| Aço enfrentando espessura | 0.8-1.5 mm formed sheet-metal blades and backplate |
| Densidade Core | 2700 kg/m³ for aluminum or 7850 kg/m³ for steel components |
| Condutividade térmica | 160-205 W/(m·K) for aluminum or 45-60 W/(m·K) for steel |
| Superfície acabado | Natural aluminum or corrosion-resistant zinc-coated silver finish |
| Tipo conjunto | Formed blade tabs or welded blade roots with machined bolted or set-screw hub |
| Customização | Disponível com base na aplicação pretendida e no ambiente operacional. |
Opções disponíveis
Aluminum or galvanized-steel constructionClockwise or counter-clockwise rotationCustom hub bore and fasteningMatched diameter and wheel depth
Planning a FFU Fan Impeller specification?
Envie-nos as suas dimensões, condições de instalação, metas de desempenho e acabamento de superfície necessário.
