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Air showers play a key role in maintaining clean environments in a variety of industries, including pharmaceutical and food processing. By controlling airflow, air showers ensure that contaminants are effectively removed from personnel or equipment before they enter critical areas. This article takes a deep dive into the technical aspects of air showers and their many applications, highlighting their importance in promoting cleanliness.
Core functions of air showers
Air showers are designed to promote cleanliness through a number of key functions. The primary mechanism is to control air velocity, directing high-velocity airflow to remove particles from surfaces. High-efficiency filters capture these contaminants and prevent them from entering clean areas. In addition, a one-way airflow system ensures that any dislodged particles are pushed away from critical environments.
- Air velocity control: 20-30 m/s
- HEPA/ULPA filtration system
- One-way airflow design
- Interlocking door system
Equipment configuration and material selection
The configuration of an air shower is critical to its effectiveness. Basic equipment includes high-efficiency filters (HEPA or ULPA) that meet ISO 14644 standards and powerful blowers. The choice of materials, such as stainless steel construction, is critical for durability and cleanliness. Stainless steel is ideal for air showers because it is corrosion-resistant and easy to clean.
Material Advantages:
Stainless steel 304/316L offers excellent corrosion resistance and durability for long-term use in harsh environments.
Critical parameters
Air Velocity
20-30 m/s for effective particle removal
Filtration Efficiency
HEPA: 99.97% @ 0.3μm
ULPA: 99.9995% @ 0.12μm
Air Change Rate
30-60 air changes per hour
Noise Level
≤75 dB(A) during operation
The important role of air shower in cleanroom applications
An air shower is an enclosed space that serves as the entrance and exit of A CleanRoom. It uses high-speed airflow to remove particulate matter from personnel or equipment, thereby minimizing the risk of contamination. This process not only protects the cleanroom, but also ensures that operations within the cleanroom meet strict industry standards.
Main functions of air showers
Contamination control
Air showers prevent external contaminants from entering the cleanroom by effectively removing and capturing particulate matter from clothing and equipment surfaces. This is essential to maintaining an ideal particle concentration within the cleanroom.
Operational efficiency
By minimizing contamination, air showers improve the overall efficiency of the cleanroom. It helps maintain consistent product quality and reduces downtime caused by contamination issues.
Compliance with standards
Cleanrooms must comply with various international standards (such as ISO 14644) that specify the permissible particle concentrations. Air showers play a vital role in ensuring that these standards are consistently met.
| Pollution source | Number of particles per minute (without air shower) | Number of particles per minute (with air shower) |
| Personnel flow | 10,000 | 500 |
| Equipment introduction | 8,000 | 400 |
Cross-industry applications
Technical specifications
| Parameter | Standard Value | Advanced Model |
| Air velocity | 20-25 m/s | 25-30 m/s |
| Filtration efficiency | HEPA H13 | ULPA U15 |
| Operating pressure | 50-100 Pa | 100-150 Pa |
| Material | SS 304 | SS 316L |
| Power consumption | 1.5-2.5 kW | 2.0-3.0 kW |
Figure 1: Typical air shower installation in a cleanroom environment
Air showers like the ones provided by Deyang are an integral part of modern cleanroom solutions, improving cleanliness and safety. Their wide application in various industries shows that they play an important role in improving production quality and operating standards. As technology develops, these systems will continue to improve to ensure compliance with emerging global standards.
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