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

FFU 및 터미널 공기 정화 장비

음압 HEPA 여과 유닛

A portable negative-air machine for temporary particle-control work, using staged filtration and a duct connection to carry filtered air beyond the work zone.

Ducted Exhaust Connection
Staged Prefilter Protection
Selectable Blower Control
Accessible HEPA Cassette

견적 요청 제품 찾아보기

상품 소개

The negative-pressure HEPA filtration unit places the prefilter and HEPA cassette upstream of a variable-speed centrifugal blower. Particle-laden room air enters the guarded intake, passes through the filters and leaves through a round exhaust collar. Gasketed access panels form the intake-side enclosure, while a differential gauge indicates filter resistance. This draw-through arrangement places the filter compartment under suction during normal operation; the downstream blower outlet is a different pressure region. With a suitable duct route beyond the work enclosure, the machine can form part of a temporary exhaust system. When the discharge returns entirely to the same room, it operates as a recirculating air scrubber instead.

주요 기능

Protected final-filter stage

Replaceable upstream particle filters collect larger dust before it reaches the HEPA cassette.

A defined exhaust interface

The round collar accepts a matched adapter and flexible duct rather than relying on an open discharge grille.

Serviceable filter retention

An accessible filter compartment allows the cassette and its sealing contact surfaces to be inspected during replacement.

Adjustable fan operation

A selected variable-speed package allows manual adjustment as the connected airflow path changes.

응용 프로그램 솔루션

Temporary particle-control enclosures need a usable exhaust path, replaceable filters and clear operating checks.

An air scrubber recirculates air but does not establish the required pressure relationship.Route the selected exhaust volume beyond the enclosure and assess it against the room supply and leakage, then check room pressure independently.

Long flexible duct runs reduce extraction below the planned duty.Use a matched collar, shorten avoidable bends and select the blower against the resistance of the installed exhaust path.

Coarse renovation dust consumes final-filter capacity unnecessarily.Select an additional intermediate prefilter and keep replacement upstream pads available for the work period.

A filter gauge is mistaken for proof of room containment.Separate the filter-maintenance reading from enclosure-to-corridor pressure monitoring and any required alarm function.

일반적인 응용 프로그램

Temporary cleanroom maintenance enclosuresNon-hazardous laboratory refurbishment workElectronics-facility fit-out particle controlNon-combustible dust-control partitionsTemporary filtered exhaust during equipment maintenance

기술 매개변수

Common selectable specifications for portable HEPA negative-air equipment are shown below. Select the fan, filter and duct package together to suit the required exhaust duty.

Operating Arrangement	Room-air intake through prefilters and HEPA, followed by a blower and ducted discharge outside the work enclosure
Prefiltration	Replaceable coarse prefilter; additional intermediate particle-filter stage available
Final-Filter Choices	Gasketed HEPA cassette; H13 or H14 filter-package options
Common Nominal Airflow Classes	Approximately 350–1200 m³/h with HEPA fitted, depending on the selected fan and filter package
Common Duct Adapter	Nominal 10 in (254 mm) round flexible-duct adapter; alternative sizes selectable
Common Electrical Variants	115 V AC, 60 Hz, or 230 V AC, 50/60 Hz; separate single-phase versions
Blower Control	Local variable-speed control; stepped-speed alternative available
Filter Condition Indication	Filter differential-pressure gauge; filter-change indicator available
Filter Service	Removable intake-side access panel and mechanically retained, gasketed final filter
내각 건설	Powder-coated metal enclosure with carry handles and mobile support
사용자 정의	의도된 응용 프로그램 및 운영 환경에 따라 사용할 수 있습니다.

사용 가능한 옵션

Additional intermediate prefilterH13 or H14 final-filter packageAlternative exhaust adapter and duct kitStepped or variable fan-speed controllerFilter-change indicatorSeparate room-pressure monitor packageAlternative caster or transport support

The usual arrangement combines prefiltration, a retained HEPA cassette, a blower and an exhaust connection. Select monitoring accessories separately; a filter-loading indication does not provide closed-loop room-pressure control.

Selection and Installation

Choose exhaust duty rather than room recirculation alone

Identify the enclosure volume, intentional supply air, leakage paths and discharge destination. A pressure deficit requires a balanced exhaust arrangement; returning all filtered air to the same enclosure does not provide it. For air polishing without an exhaust route, compare the mobile cleanroom air purifier.

Allow for the complete duct resistance

Select the blower using the installed HEPA, duct length, bends, adapters and terminal resistance. A catalogue airflow range is not the delivered exhaust volume through every duct layout. Keep the discharge route secured and sealed: the fan outlet and its downstream duct must not be assumed to be under suction.

Monitor two different pressure measurements

The filter gauge helps track resistance through the filtration section. Room differential pressure is a separate measurement between the enclosure and the adjacent area, using its own sensing points. If a pressure alarm or automatic control is needed, specify the room monitor, fan-failure response and operating sequence as a separate package.

Plan safe filter handling

Reserve withdrawal space at the intake panel, isolate electrical power for HEPA service and handle loaded filters according to the collected material. Check the replacement cassette dimensions, gasket seating and retention before restarting. This general particle-filtration configuration is not specified for infectious isolation, potent-compound handling, combustible dust, explosive atmospheres or solvent-vapour extraction; those duties require separately engineered equipment and exhaust provisions.

Planning a Negative-Pressure HEPA Filtration Unit specification?

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