latest company case about Guangzhou Cleanroom Construction Co., Ltd. Certifications

As a critical protective barrier in clean environments, the air shower has evolved from a basic auxiliary device into a high-technology product integrating precision manufacturing and fluid dynamics. Its core value lies in achieving efficient, non-contact purification before personnel or materials enter high-cleanliness areas through controllable and quantifiable physical processes. Based on specific technical parameters, this article analyzes the core logic of air showers from design principles to practical performance.

The purification performance of an air shower is built upon a two-stage filtration system. The pre-filter captures larger particles ≥5 μm, while the core HEPA filter typically achieves a filtration efficiency of no less than 99.99% for 0.3 μm particles.

To ensure consistent performance, the reliability of the basic structure is crucial. A full 304 stainless steel enclosure with a thickness of 1.0 mm ensures robustness and corrosion resistance under long-term, high-frequency operation, providing a stable foundation for the internal precision systems.

The purification process relies on precisely engineered airflow. The driving force is provided by a high-performance fan—one high-air-volume 0.75 kW fan—capable of stably delivering jet air velocities exceeding 20 m/s (up to 25–30 m/s). This ensures sufficient momentum to dislodge particles adhered to surfaces.

Uniform airflow distribution is achieved through nozzle design. Equipped with 12 mirror-polished stainless steel nozzles, featuring high surface smoothness and corrosion resistance, the optimized layout ensures uniform full-body coverage, eliminates dead zones, and delivers efficient, comprehensive surface decontamination.

Modern air showers integrate sensors and control systems for precise performance management. Automatic door interlocking maintains pressure differentials, while infrared sensors enable air shower activation upon entry.

Key operating parameters—such as air velocity, filter differential pressure, and shower duration—can be monitored and recorded in real time. This design enables equipment status visualization, and performance (for example, airflow uniformity generated by the combined action of the fan and nozzles) can be objectively verified and periodically reviewed using instruments such as particle counters.

The requirements of different industries ultimately translate into specific configurations of the above technical parameters.

Highly sensitive to particulate contamination, this industry requires high air velocity (enabled by powerful fans) and longer shower times. The mirror-polished stainless steel enclosure and nozzles also meet anti-static and ultra-cleanliness requirements.

The focus is on microbial control. All equipment surfaces—especially stainless steel enclosures and nozzles—must withstand repeated exposure to corrosive disinfectants, and the dead-zone-free design facilitates thorough sterilization.

In addition to meeting purification requirements, the 1.0 mm thick 304 stainless steel structure is well suited to humid environments and routine wash-down procedures, ensuring long-term durability.

Air shower selection should be based on quantitative analysis: required air velocity and filtration efficiency determined by cleanliness class (e.g., ISO 14644-1), and air shower size and nozzle quantity determined by personnel throughput (for example, a 12-nozzle configuration is suitable for a single-person, dual-side air shower).

After installation, all claimed parameters must be verified, including measuring air velocity uniformity at each nozzle using an anemometer and validating purification effectiveness with a particle counter.

Sustained performance depends on standardized maintenance. Filter resistance should be monitored regularly with a differential pressure gauge and replaced when it reaches twice the initial value. Stainless steel interior surfaces and nozzles should be cleaned periodically to prevent contaminant buildup that may affect airflow. Core components such as the 0.75 kW fan should be included in routine operational inspections.

From the solid foundation provided by a 1.0 mm thick 304 stainless steel enclosure to the verifiable purification airflow generated by the coordinated operation of a 0.75 kW fan and 12 mirror-polished stainless steel nozzles, modern air showers translate purification capability from concept into measurable and controllable practice through clearly defined technical parameters. Their value lies in serving as a reliable, engineered solution that continuously delivers stable protective performance through standardized operation and maintenance, making them an indispensable technical node in clean environments.