The fresh air cabinet is an essential cleanroom ventilation equipment designed to supply a continuous stream of filtered, fresh air to indoor environments. It is widely used in clean engineering, medical facilities, laboratories, pharmaceutical manufacturing, and various industrial sectors where air purity is critical. By integrating filtration, air supply, and optional heating or cooling, it ensures a controlled and comfortable atmosphere.

I. Principle of the Fresh Air Cabinet

The working principle of a fresh air cabinet involves drawing in outdoor air, passing it through multi-stage filters to remove dust, particulates, and microorganisms, and then delivering it into the indoor space at a controlled volume. Depending on the configuration, the system may also include preheating, cooling, or humidity adjustment. The core components typically include:

• Air intake section with protective mesh
• Primary and high-efficiency filters (e.g., G1 + H13)
• Fan and motor assembly for constant airflow
• Optional temperature and humidity control modules
• Insulated cabinet body to minimize energy loss

II. Main Functions

The fresh air cabinet plays multiple roles in ensuring environmental quality and occupant comfort:

• Air Purification: Removes airborne particulates, pollen, bacteria, and other contaminants.
• Ventilation: Continuously replaces stale indoor air with fresh outdoor air.
• Humidity Control: Helps maintain optimal indoor humidity levels when integrated with dehumidification or humidification systems.
• Temperature Regulation: Optional heating or cooling modules stabilize indoor temperatures.
• Pressure Balance: Helps maintain positive pressure in cleanrooms to prevent contamination.

III. Applications

Fresh air cabinets are used across various industries, especially in environments where air quality directly impacts processes, safety, and product quality. Key application sectors include:

• Cleanroom engineering
• Medical engineering and hospital facilities
• Pharmaceutical and biotechnology industries
• Laboratory engineering and research facilities
• Environmental protection and technology
• Electronics and precision manufacturing

IV. Advantages

Compared with traditional ventilation systems, fresh air cabinets offer:

• High filtration efficiency for cleaner air
• Compact and integrated design for easy installation
• Low noise operation suitable for sensitive environments
• Energy-efficient performance with optimized airflow control
• Customizable specifications to meet diverse industry needs

V. Maintenance and Care

Regular maintenance is essential to ensure long-term performance:

• Replace filters according to manufacturer recommendations
• Clean fan blades and housing to prevent dust accumulation
• Check motor bearings and electrical connections periodically
• Inspect cabinet seals to avoid air leakage

VI. Conclusion

The fresh air cabinet is a vital component in achieving clean, comfortable, and healthy indoor environments. By combining air purification, ventilation, and optional climate control in one compact unit, it serves as a reliable solution for industries where air quality is a non-negotiable factor.