Cleanroom High-Efficiency Air Outlet

The high-efficiency air supply outlet in a cleanroom is a critical terminal device in the purification HVAC system. Its core function is to deliver clean air uniformly into the cleanroom through high-efficiency filters (HEPA/ULPA), maintaining the required cleanliness level. Below are the key technical details:

‌I. Core Structure‌

1. ‌Housing Construction‌: Typically made of cold-rolled steel with powder coating or stainless steel, including a plenum chamber, HEPA/ULPA filter, diffuser plate, and damper interface. Ultra-thin designs are suitable for spaces with limited ceiling height.
2. ‌Filter Configuration‌: Uses liquid-seal or mechanical sealing (e.g., EPDM gaskets), with filtration efficiency matching cleanliness requirements (e.g., ULPA for Class 10).
3. ‌Airflow Control‌: The diffuser plate ensures uniform airflow velocity (0.2–0.5 m/s in laminar flow zones), with top or side connection options available.

‌II. Key Parameters‌

• ‌Airflow Range‌: Common models include 320-type (500 m³/h), 630-type (1500 m³/h), and high-capacity 2000 m³/h units.
• ‌Material Selection‌: Stainless steel is recommended for corrosive environments, while cold-rolled steel with powder coating is suitable for standard applications.
• ‌Sealing Performance‌: Liquid sealing (leakage rate <0.01%) is required for high-cleanliness areas, while mechanical sealing can be used for medium/low cleanliness zones.

‌III. Installation & Maintenance‌

1. ‌Installation Process‌:
   • Position housing → install filter with sealing → fix diffuser plate → connect damper.
2. ‌Maintenance:
   • Regularly monitor pressure drop (increases when filter clogs).
   • Replacement cycle typically 1–3 years.
3. ‌System Matching‌:
   • Calculate total airflow based on cleanroom volume and air changes per hour (ACH).
   • Distribute airflow reasonably to each outlet.

‌IV. Applications‌

• ‌Laminar Flow Cleanrooms‌ (e.g., operating rooms): require full coverage of outlets for unidirectional airflow.
• ‌Turbulent Flow Cleanrooms‌ (e.g., food processing): use localized outlets with air mixing.
• ‌Special Environments‌: Industries like pharmaceuticals and electronics prioritize stainless steel materials.