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FFU y equipos de purificación de aire terminal
Unidad de filtro de soplador (BFU)
A deeper ceiling clean-air unit using a dedicated centrifugal blower to overcome duct, damper and final-filter resistance at elevated airflow.
- High-Pressure Centrifugal Blower
- Ducted or Recirculating Inlet
- Perforated Air Diffuser
- Large Airflow Capacity
Introducción del producto
The blower filter unit houses a forward- or backward-curved centrifugal blower above a full-size HEPA or ULPA filter in a deep insulated enclosure. Unlike a shallow grid FFU, the BFU is designed with enough chamber height for a larger scroll or blower wheel and can accept a round duct collar, inlet damper or recirculating top intake. An internal perforated plate distributes the higher-volume discharge over the filter surface. The format is suited to turbulent-flow rooms, high air-change zones and ceiling positions where a long duct path or loaded filter creates more resistance than a compact FFU can handle.
Características clave
The large pressure chamber reduces direct fan imprint before air reaches the HEPA or ULPA surface.
A removable perforated plate smooths the discharge and protects the downstream filter face during service.
Duct-connected and self-recirculating intake arrangements use the same ceiling-mounted enclosure platform.
Preocupaciones del producto del cliente
Compact FFUs can lose airflow when the air path includes long ducts, dampers or a heavily loaded final filter.
Supply volume falls below target when duct and terminal pressure losses are added together.The larger centrifugal blower provides a higher available static-pressure range than a shallow axial module.
A concentrated blower outlet produces a visible high-velocity patch at the centre of the diffuser.The deep plenum and perforated equalising plate distribute pressure before final filtration.
A central air handler cannot independently trim airflow to one room or process zone.Each BFU can use its own speed setting or damper to balance the local ceiling supply.
Filter replacement requires dismantling the complete blower housing from above.A separated lower filter section permits the final filter and diffuser to be removed without lifting the blower assembly.
Aplicaciones típicas
High air-change cleanroomsDucted pharmaceutical supply pointsElectronics packaging roomsFood processing clean zonesLarge clean booths and corridors
Parámetros técnicos
Typical BFU enclosure and filter ranges for cleanroom ceiling service are shown below.
| Materiales Core | Centrifugal blower, micro-glass HEPA or ULPA filter and optional closed-cell acoustic liner |
|---|---|
| Panel de espesor | 500-750 mm overall housing depth |
| Ancho efectivo | 650-1300 mm nominal ceiling module width |
| Longitud máxima | Up to 1450 mm standard housing length |
| Acero frente a espesor | 1.0-1.5 mm powder-coated steel or 304 stainless-steel blower-filter casing |
| Densidad Core | Approximately 24-48 kg/m³ density for optional closed-cell acoustic insulation |
| Conductividad térmica | Approximately 0.033-0.040 W/(m·K) for the optional closed-cell acoustic liner |
| Superficie acabada | Ivory-white powder coat or brushed 304 stainless steel with stainless perforated diffuser |
| Tipo conjunto | Flanged duct inlet with gasketed blower access panel and compression-seal or gel-seal final filter |
| Customization | Disponible según la aplicación prevista y el entorno operativo. |
Opciones disponibles
Forward- or backward-curved centrifugal blowerRound duct inlet or recirculating top grilleHEPA H14 or ULPA U15 final filterStepped, inverter or EC airflow control
Planning a Blower Filter Unit (BFU) specification?
Envíenos sus dimensiones, condiciones de instalación, objetivos de rendimiento y acabado superficial requerido.
