Boîte de passage unidirectionnelle verticalepar

Introduction de produit

The vertical unidirectional-flow pass box places the final filter above the transfer space and carries returning air towards lower passages. A fan supplies the upper plenum, while the perforated support and side openings form the chamber's return route. This is a directed-flow arrangement for suitably positioned components, distinct from a cabinet that merely recirculates filtered air and from a material shower using concentrated cleaning jets.

Key Features

Des solutions pour votre application

The important purchasing question is whether the proposed chamber remains useful with the real transfer load in place.

Les applications typiques

Use this configuration for materials that benefit from a controlled downward air path. A HEPA filter and directional airflow do not establish sterility, a room cleanliness class, or personnel and environmental containment for hazardous substances.

Paramètres techniques

The following are common selectable construction and airflow references for this vertical-flow arrangement, not an as-built STjh performance schedule. Air speed is a measuring-plane selection; it does not establish uniform flow around every loaded object, chamber classification or recovery time.

Options disponibles

The base arrangement is the ceiling supply, return passages, load support and interlocked doors. Filter sealing, motor type, measuring hardware and added communication functions are individual selections; they are not all implied standard equipment.

Selection and Installation

Choose the air path around the actual load

A vertical-flow cabinet is selected for the direction and distribution of its air, not simply because a fan is installed. Show the largest tray, container height and loading position when choosing the chamber. A broad object beneath the ceiling filter creates a wake; leave appropriate clearance to the filter face and return openings. A perforated shelf does not make the underside of an opaque container directly exposed to clean supply air.

Separate velocity from delivered performance

State where the air-speed target will be measured and whether the chamber is empty or loaded. Fan adjustment can change flow, but it cannot by itself demonstrate an undisturbed downward pattern, a specified particle-recovery interval or an aseptic transfer result. Match the filter area and return geometry before selecting the blower. Keep fan power, sound level and pressure rise tied to that same offered assembly rather than combining catalogue figures.

Identify services and access

This arrangement includes a fan-filter supply and return path. A facility-fed alternative needs its own inlet, return or exhaust arrangement; it is not interchangeable with the recirculating chamber merely by adding a duct connection. Allow access to the final filter, prefilter, fan and measuring points, and retain sufficient wall support and door-swing space.

Set the transfer sequence

Define loading, door closure, airflow restoration and receiving-side release for the intended materials. A timed delay is a control setting rather than proof that a contamination endpoint has been reached. For packages requiring directed surface de-dusting instead of a broad downward sweep, compare the material air-shower pass box.