Three-quarter view of dark-blue negative-pressure HEPA filtration unit with black intake and exhaust collar

FFU dan Peralatan Pemurnian Udara Terminal

Unit Filtrasi HEPA Tekanan Negatif

A rugged portable negative-air machine that pulls contaminated room air through staged filters and exhausts the HEPA-cleaned airflow through a sealed duct connection.

Containment Exhaust Flow
Upstream Prefilter Protection
Variable Negative Air Volume
Sealed Exhaust Collar

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Perkenalan produk

The negative-pressure HEPA filtration unit places the prefilter and HEPA cassette upstream of a variable-speed centrifugal blower. Contaminated room air enters the guarded intake, is filtered under negative pressure and then exits through a round exhaust collar for connection outside the contained space or to an approved return path. A differential gauge indicates filter resistance, and gasketed access panels maintain the dirty-side pressure boundary. When operated without an exhaust duct, the same unit functions as a recirculating air scrubber but does not create room negative pressure.

Fitur utama:

Upstream HEPA placement keeps the filter compartment and duct connection under negative pressure.

A sealed round outlet accepts flexible ducting for controlled exhaust from the contained room.

Variable blower speed supports pressure adjustment as room leakage and filter resistance change.

Separate coarse and intermediate filters protect the HEPA stage during high-dust work.

Kekhawatiran produk pelanggan

Containment requires more than HEPA recirculation: the filtered airflow must leave the room through a controlled path at a rate greater than incoming leakage.

A portable purifier cleans air but leaves the room at neutral pressure.The sealed exhaust collar routes filtered air outside the contained space to create a pressure deficit.

A leak on the dirty side can discharge contaminated air around the HEPA filter.The upstream filter arrangement keeps dirty compartments under suction during operation.

Heavy construction dust rapidly loads the expensive final filter.Replaceable coarse and intermediate prefilters capture high-mass particles first.

Negative pressure falls as the filters load or the enclosure leakage changes.The variable blower and filter gauge allow airflow to be adjusted while resistance is monitored.

Aplikasi yang Tipis

Isolation and containment roomsCleanroom maintenance enclosuresLaboratory renovation zonesPharmaceutical dust containmentTemporary controlled exhaust

Parameter teknis

Representative construction ranges for a portable negative-pressure HEPA filtration unit are listed below.

Bahan inti	Variable-speed centrifugal blower with coarse prefilter, intermediate stage and upstream micro-glass H13-H14 HEPA filter
Ketebalan Panel (Panel Thickness)	500-900 mm enclosure depth
Efektif lebar	500-900 mm cabinet width
Panjang maksimum	Up to 1300 mm overall unit height or longest cabinet dimension
Baja menghadap ketebalan	1.0-1.5 mm dark-blue powder-coated steel or lightweight aluminium enclosure
Kepadatan inti (core density)	Approximately 90-120 kg/m³ compacted density of the HEPA pack used in the negative-pressure filtration cabinet
Konduktivitas Termal (Thermal Conductivity)	Approximately 0.035-0.043 W/(m·K) for the HEPA pack used in the negative-pressure exhaust path
Permukaan selesai	Dark-blue chemical-resistant powder coat with black intake grille and stainless corner hardware
Jenis Bersama	Gasketed negative-side filter door with positive-lock cassettes and sealed round exhaust duct flange
Customization (Kustomisasi)	Tersedia berdasarkan aplikasi yang dimaksudkan dan lingkungan operasi.

Pilihan yang tersedia

Single or multi-stage prefiltrationHEPA H13 or H14 final filterRound exhaust duct adaptersCaster frame or stackable skid

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