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FFU et équipement de purification de l'air terminal
AC Unité de filtre de ventilateur
A cost-conscious FFU built around a permanent-split-capacitor AC motor, local speed adjustment and a replaceable high-efficiency filter module.
- PSC AC Induction Motor
- Local Rotary Speed Control
- Forward-Curved Blower Wheel
- Wide Voltage Configuration Range
Introduction de produit
The AC fan filter unit uses a permanent-split-capacitor induction motor and forward-curved blower wheel to produce filtered supply air from a conventional single-phase circuit. A local rotary controller adjusts motor voltage for commissioning and periodic rebalance, while the accessible junction box keeps mains connections separate from the filter chamber. The mechanically simple drive is suitable where individual unit control and economical replacement are preferred over digital networking.
Key Features
A guarded rotary potentiometer permits local airflow trimming without software or a communication network.
The forward-curved wheel develops useful pressure at moderate rotational speed in a compact top-mounted scroll.
A separate terminal enclosure keeps line-voltage connections away from the clean-air path.
Préoccupations du client produit
An AC FFU is often selected for straightforward local operation, so the design must balance first cost, controllability and service access.
A fixed-speed AC blower supplies too much air to one ceiling bay and makes system balancing difficult.A dedicated rotary speed controller lets the commissioning technician trim each PSC motor independently.
Line-voltage wiring installed beside the filter seal complicates service and risks damaging the gasket.A top-mounted junction box provides a clear cable gland and terminal area outside the filter interface.
High motor speed can create an objectionable tonal sound above occupied workstations.A correctly sized forward-curved wheel reaches the required face velocity at a moderate operating point.
Replacing an entire proprietary control board extends downtime for a simple fan fault.The conventional PSC motor, capacitor and analog speed controller can be inspected as separate service components.
Les applications typiques
Small independent cleanroomsRetrofit ceiling bays with local controlsCompounding support areasLaboratory clean benches and enclosuresFacilities standardizing on conventional AC maintenance parts
Paramètres techniques
Representative dimensions and materials for a locally controlled PSC-motor AC fan filter unit are shown below.
| Matériaux de base | Galvanized-steel plenum, PSC AC motor, forward-curved centrifugal wheel and micro-glass HEPA or ULPA filter |
|---|---|
| Panneau épaisseur | 320-420 mm overall module depth |
| Largeur effective | 575 - 1170 mm Largeur nominale de grille de plafond par |
| Longueur maximale | Jusqu'à 1170 mm de longueur standard du module par |
| Acier face épaisseur | 0.8-1.2 mm galvanized-steel plenum and service panels |
| Densité Core | Approximately 85-115 kg/m³ nominal compacted density of the micro-glass final-filter pack |
| Conductivité thermique | Approximately 0.035-0.045 W/(m·K) for the dry final-filter pack installed in the AC-driven FFU |
| surface finie | Natural passivated zinc interior with optional white powder-coated exterior and diffuser |
| Type joint | Ceiling-grid flange with neoprene perimeter gasket and a compression-sealed removable filter frame |
| Customisation | Disponible en fonction de l'application prévue et de l'environnement d'exploitation. |
Options disponibles
115, 208-230 or 277 V single-phase configurationForward-curved or backward-curved fan wheelLocal rotary or wall-mounted speed controllerBench-top or room-side replaceable filter
Planning a AC Fan Filter Unit specification?
Envoyez-nous vos dimensions, conditions d'installation, objectifs de performance et finition de surface requise.
