Air Shower Pass Box‌

An air shower pass box is a cleanroom equipment designed for transferring small items between areas of different cleanliness levels, minimizing door openings and contamination risks. Key details include:

1. Definition & Function

• ‌Basic Definition‌: It uses purified airflow to remove dust particles from item surfaces. Constructed with a housing, fan, HEPA filter, and control system, it is widely used in electronics, pharmaceuticals, food industries, and other high-cleanliness environments
• ‌Core Function‌: During transfers, high-speed clean airflow (≥20 m/s) is sprayed onto items to dislodge particles. The airflow is then filtered and recirculated to maintain air quality in clean zones

2. Structure & Working Principle

1. ‌Key Components‌:

   • ‌Dual Lifting Assembly‌: Utilizes motors and synchronized pulleys for smooth, automated door operation with object-position sensing
   • ‌Air Shower System‌: Includes a fan, HEPA filters (≥99.99% efficiency), and stainless steel nozzles to generate high-speed airflow
   • ‌Control System‌: Features infrared sensors, 485 communication interfaces, remote monitoring, and stall-current adjustment for anti-pinch safety

2. ‌Workflow‌:

   • Infrared sensors trigger the air shower upon item placement.
   • Electronically interlocked doors prevent simultaneous opening to avoid cross-contamination
   • Optional UV lamps or rollers enhance compatibility with diverse operational needs

3. Technical Features

• ‌High Efficiency‌: ≥20 m/s airflow velocity combined with H14-grade HEPA filters ensures optimal particle removal
• ‌Smart Control‌: Auto-sensing activation, remote operation, and real-time monitoring reduce manual input
• ‌Safety‌: Electronic interlocks, anti-pinch mechanisms, and stainless steel options improve durability and safety
• ‌Customization‌: Rollers, pressure gauges, intercoms, and other add-ons adapt to short-/long-distance transfers

4. Applications & Advantages

• ‌Typical Use‌: Cleanrooms, labs, sterile production lines, and other contamination-sensitive settings
• ‌Integration‌: Works with air shower rooms to isolate personnel and item transfers, forming a complete contamination barrier
• ‌Key Benefits‌: Reduces human-induced contamination, lowers energy consumption (auto start/stop), improves efficiency, and enables intelligent operations

5. Example Technical Specifications