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
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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
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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
| Parameter |
Standard Specification |
| Dimensions |
940×600×1450mm (customizable) |
| Airflow Velocity |
≥20 m/s |
| Filtration |
≥99.99% (H14 grade) |
| Power Supply |
380V/50Hz |
| Optional Features |
UV sterilization, rollers, pressure gauge |
