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How to Design a Channel Type Air Shower
Optimizing cleanroom contamination Control Through Effective Air Shower Design
Introduction
Designing a channel type air shower requires meticulous planning to ensure it efficiently removes particulate contamination while meeting the specific needs of cleanroom environments. Whether for personnel or equipment decontamination, the design must be robust, incorporating advanced features to optimize cleaning efficiency.
Figure 1: Modern channel type air shower design by Deiiang™
Dimensions and Layout
Tailored for Space and Use
The size of the air shower should be customized based on the available space and the expected traffic of people or items. Deiiang™, with guidance from product designer Deiiang Jason.peng, offers designs that optimize space utilization without compromising performance.
Recommended Dimensions:
- Single person: 900mm × 900mm × 2100mm
- Two persons: 1200mm × 1200mm × 2100mm
- Equipment passage: 1500mm × 1500mm × 2100mm
- Tunnel type: 2000mm+ length for high throughput
For instance, larger facilities may require a longer tunnel to accommodate multiple users, enhancing throughput and efficiency. Our data shows tunnel-type designs can improve personnel processing by 40% compared to standard models.
Structure and Features
Material Selection
Critical to select materials that minimize particle generation:
- Powder-coated steel (most economical)
- 304 stainless steel (premium option)
- 316L stainless steel (for corrosive environments)
These materials provide durability and ease of maintenance, crucial for sustaining a clean environment.
LED Lighting
Bright LED lighting enhances visibility while being energy-efficient:
- Minimum 300 lux illumination
- IP65 rated for dust protection
- 50,000+ hours lifespan
Proper lighting is essential for user comfort and operational effectiveness.
Filtration System Specifications
| Component | Specification | Efficiency |
|---|---|---|
| Pre-filter | G4 grade | 90% @ 5μm |
| Main HEPA filter | H14 grade | 99.995% @ 0.3μm |
| Air Recirculation | 90% recirculation rate | Energy savings up to 40% |
Customization Options
Depending on specific CleanRoom requirements, consider additional features:
UV Sterilization
254nm wavelength for microbial control
Access Control
Fingerprint, RFID, or card readers
Ozone Generator
For advanced decontamination cycles
Airflow and Cleaning Capability
Critical Airflow Specifications
- Nozzle Velocity: High-speed airflow is crucial for contaminant removal. Clean air Products recommend a minimum nozzle velocity of 7,800 feet per minute (fpm).
- Air volume: A sufficient volume of air, such as 1,900 cubic feet per minute (cfm), is needed to filter and recirculate particles effectively.
- Nozzle Placement: Strategically place nozzles to ensure uniform and thorough cleaning. Ideally, they should be adjustable and easy to remove for maintenance.
Performance Data
Independent testing shows our air shower designs achieve:
- 98.7% particle removal efficiency (0.5μm particles)
- 15-second cycle time for personnel
- <3% velocity variation across nozzle array
- Noise levels below 65dB
Control Systems
Advanced Control Features
Interlocking Doors
Electromagnetic or other interlocks are vital to prevent simultaneous opening:
- 0.5 second delay between door operations
- Audible and visual alarms for violations
- Fail-safe mechanism in power outages
Emergency Systems
- Emergency exit button with override
- Battery backup for critical functions
- Manual door release mechanism
Control Panel Features
A touchscreen control panel facilitates easy adjustments of:
- Shower time (5-99 seconds adjustable)
- Airspeed (3 preset levels)
- UV sterilization cycles
- Maintenance alerts
- Usage logging
Our latest models feature IoT connectivity for remote monitoring and data collection.
Door Operation Modes
Single Door
Ideal for streamlined, individual access:
- Minimal space requirements
- Lowest cost option
- Basic contamination control
Double Door
Offers more accessibility:
- For larger groups
- Equipment entries
- Enhanced contamination barrier
Rolling Door
Provides expansive access:
- For bulky items
- High traffic areas
- Maintains cleanroom integrity
Selection Guide
| Application | Recommended Type | Throughput |
|---|---|---|
| Pharmaceutical lab | Double door | 15-20 persons/hour |
| Electronics manufacturing | Rolling door | 30+ items/hour |
| Research facility | Single door | 10 persons/hour |
Conclusion
Designing a channel type air shower requires consideration of various factors, including size, structure, airflow, and control systems. By addressing these components, air showers can effectively remove contaminants, meeting stringent cleanliness requirements in diverse applications.
Deiiang™, through the innovation of Deiiang Jason.peng, continues to set benchmarks in air shower technology, providing customized solutions for optimal performance across industries including pharmaceuticals, electronics, biotechnology, and healthcare.
Key Takeaways
- Custom sizing improves space utilization
- HEPA filtration is essential for Cleanroom standards
- 7800 fpm nozzle velocity ensures effective cleaning
- Interlock systems prevent cross-contamination
- Material selection impacts durability and cleanliness
- Control systems should balance automation and safety
Common Questions and Answers
How does air volume affect air shower performance?
Adequate air volume ensures effective particle removal and air recirculation. Our testing shows that maintaining at least 1,900 cfm achieves optimal cleaning for standard personnel air showers.
What materials are best for air shower construction?
Powder-coated steel and stainless steel are preferred for their durability and cleanliness. For iso class 5 and above cleanrooms, 304 or 316L stainless steel is recommended.
Why are interlocking doors important?
They prevent cross-contamination by ensuring only one door opens at a time. Our data shows proper interlocks reduce particulate ingress by 92% compared to non-interlocked systems.
What nozzle velocity is recommended for efficient cleaning?
A minimum of 7,800 fpm is recommended to effectively dislodge particles. Higher velocities (up to 9,000 fpm) may be used for stubborn contaminants but increase energy consumption by 15-20%.
Can air showers be customized for specific needs?
Yes, features like adjustable airflow (3-5 speed settings), UV lamps (for 99.9% microbial reduction), and advanced control panels with data logging can be tailored to specific requirements.
