Clean workshops frequently suffer from pressure drop to zero, excessive particle count and unqualified microbial colonies. Even after inspecting fans, filters and door seals, issues persist. Most of these problems stem from missing buffer airlocks.

Each time personnel or materials pass through opening doors, indoor and outdoor air mixes directly, causing repeated pressure fluctuations. Air handling units have to continuously compensate air pressure at high power. This increases energy consumption and makes it hard to maintain stable differential pressure. After installing interlocked buffer airlocks, air exchange is confined within a small transition space. Pressure fluctuation range is greatly reduced, the whole purification system runs more steadily, and the service life of filter cartridges and fans is significantly extended.

Airlock Buffer vs Air Shower: Clarify Their Different Functions

Many people confuse air showers and buffer airlocks, but they have non-interchangeable functions:

• Buffer airlock: Core function is air isolation, pressure locking and blocking air convection to prevent reverse airflow when doors open.
• Air shower: Core function is blowing away surface dust particles on personnel, only for human decontamination.

Standard layout for high-grade clean zones: Corridor → Buffer Airlock → Air Shower → Clean Core Area. The buffer airlock isolates airflow while the air shower removes human-borne contamination. Combined, they build a complete contamination control chain. Installing only an air shower without a buffer airlock leads to reverse airflow the moment doors open, greatly weakening air shower dust removal performance.