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Defined supply connection
A ducted outlet lets the installation route filtered air across the enclosure boundary instead of discharging beside the intake.
FFU y equipos de purificación de aire terminal
Unidad de suministro de aire HEPA de presión positiva
A portable supply assembly that transfers filtered air across an enclosure boundary, supporting an outward pressure bias when supply, exhaust and leakage are balanced.
- Filtered Supply Air
- Duct-Ready Outlet
- Adjustable Fan Output
- HEPA Filter Options
Introducción del producto
The positive-pressure HEPA air supply unit combines an intake, blower and accessible filter section in a portable cabinet with a duct-ready outlet. A replaceable prefilter protects the final HEPA cassette, while a round collar or selected adapter connects the discharge to a room, enclosure or clean booth. The cabinet can remain outside the served space, leaving the occupied area clear of the machine and its service access. Fan drive, housing material and filter arrangement are selected together; a molecular stage is an additional option for a defined gas or odour duty.
Características clave
Accessible prefiltration
The upstream service stage can collect larger particles before they accumulate on the final filter.
Selectable output settings
A local fan-control package provides an adjustment point when the connected duct or enclosure changes.
Separate pressure functions
Filter-resistance indication and optional room-pressure monitoring serve different maintenance and operating needs.
Soluciones para su aplicación
A positive-supply installation succeeds when the source, duct and served space form one deliberate airflow path.
Recirculation improves particle levels but leaves the room pressure unchanged.Take source air from beyond the room boundary and size the make-up supply around the enclosure's exhaust demand and outward leakage.
A long flexible hose reduces the air reaching the enclosure.Choose the fan/filter assembly for the actual connected resistance and minimise unnecessary bends or abrupt adapters.
The filter gauge is mistaken for proof of room positive pressure.Use a dedicated room-to-reference pressure sensor for the pressure relationship, while the machine gauge tracks the selected filter section.
Enclosure changes make an earlier fan setting unsuitable.Reassess output and relief paths after changing doors, penetrations or connected exhaust, and observe the resulting room pressure.
Aplicaciones típicas
Temporary product-protection enclosuresPortable inspection enclosuresFiltered supply to non-hazardous clean work areasSensitive equipment protectionClean-air supply to assembly booths
Parámetros técnicos
The following are common selectable supply, filter and connection references for this equipment type. They describe configuration choices rather than a single tested operating point.
| Air Handling Arrangement | Filtered source-air supply into a separate room or enclosure |
|---|---|
| Common Electrical Supply Option | 230 V AC, single phase, with a 50 Hz or 60 Hz electrical variant |
| Final-Filter Options | HEPA H13 or H14 filter cassette |
| Prefiltration | Replaceable coarse or fine particle prefilter ahead of the final filter |
| Fan Control Options | Variable-speed or stepped local airflow adjustment; EC fan option |
| Common Round Duct Reference | 250 mm circular connection; alternative collar sizes or rectangular adapters available by configuration |
| Housing Options | Powder-coated steel or stainless steel |
| Filter Loading Indication | Differential-pressure gauge across the selected filter section |
| Acceso al servicio | Removable access panel and replaceable gasketed filter cassette |
| Installation Format | Caster-mounted portable base; stationary base option |
| Customization | Disponible según la aplicación prevista y el entorno operativo. |
Opciones disponibles
Round or rectangular supply connectionHEPA H13 or H14 final stagePrefilter and carbon configurationsCaster-mounted or stationary baseEC fan and alternative local controlsSeparate room-pressure monitor or control package
Carbon media are selected for a specified contaminant and service condition; a particle filter is not a general gas-removal stage. Ducting, intake protection and pressure-control accessories can be specified separately from the supply cabinet.
Selection and Installation
Identify where the source air comes from
Place the intake outside the served enclosure, or connect a separate source-air duct to a suitable intake arrangement. Air drawn from an adjacent conditioned room is not automatically outdoor ventilation. Genuine outdoor supply also needs an appropriate weather intake and temperature and humidity provision. Keep the source away from vehicle exhaust, process emissions and unassessed chemical contamination.
Balance the whole enclosure
Allow for existing mechanical exhaust, relief openings, door gaps and other leakage paths. Select supply above mechanical exhaust demand, with the excess leaving through designed relief and leakage paths. Door opening can interrupt that balance. Select room differential-pressure monitoring separately from the filter-loading gauge, which measures resistance within the machine rather than room pressure. For filtration that only circulates air within one room, compare the mobile cleanroom air purifier.
Size the complete air path
Use the fan curve for the selected filter stack and include duct length, bends, adapters, discharge fittings and loaded-filter resistance. Free-air fan output and unducted purifier airflow are not delivered room supply. Filter pressure drop is also not the external static pressure available to overcome duct resistance. Review airflow, electrical input and sound at the same operating setting; a smaller collar does not preserve the flow of a larger duct.
Keep operation and service accessible
Reserve space for withdrawing filters and opening the access panel without straining the supply connection. Support ducting independently and secure the portable base before operation. Define whether the order includes the duct, wall flange, room sensor, controller and relief arrangement. HEPA filtration does not control temperature or humidity, and the unit alone does not establish an ISO room class. This positive-supply arrangement is for product-protection applications, not hazardous-dust extraction, infectious isolation or explosion-protected service.
Planning a Positive-Pressure HEPA Air Supply Unit specification?
Envíenos sus dimensiones, condiciones de instalación, objetivos de rendimiento y acabado superficial requerido.
