Bộ lọc HEPA áp suất âm

Giới thiệu Sản phẩm

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.

Các tính năng chính

Các giải pháp cho ứng dụng của bạn

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

Các ứng dụng điển hình

Thông số kỹ thuật

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.

Các tùy chọn có sẵn

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.