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When to use the three-door air shower room?

  • Author:Jason Peng

  • Cleanroom Engineering Technology Manager of Deiiang Company.

    Product R&D Manager of GDC Inc. Cleanroom Equipment Manufacturing Company.

    Executive Director of Guangdong Cleanroom Industry Association of China.

    Engaged in R&D of related products for 15 years, with rich relevant technical experience

  • 2025-01-16  |  Visits:

The three-door air shower is a specialized decontamination system designed to maintain cleanliness in highly sensitive environments such as cleanrooms, laboratories, and manufacturing facilities. Unlike traditional air shower systems, it offers an extra level of protection by ensuring that contaminants are effectively removed from both personnel and materials before they enter controlled spaces. This article explores the ideal scenarios for using a three-door air shower and its role in preventing contamination.

When to Use the Three-Door Air Shower?

The three-door air shower is primarily used in environments where strict contamination control is required. It’s ideal for industries such as pharmaceuticals, Electronics, and biotechnology, where even minute particles can affect product quality.

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  • High-traffic Areas

    In industries with frequent movement of personnel or materials into clean areas, a three-door air shower ensures efficient decontamination. It allows for controlled entry and exit, preventing cross-contamination.

  • Critical cleanroom environments

    In cleanrooms where contamination control is critical, a three-door air shower helps ensure that both personnel and equipment undergo decontamination before entering. This is particularly important in industries like pharmaceuticals and Semiconductor manufacturing, where contamination can lead to costly production failures or compromised product quality.

  • Efficient Workflow

    The three-door configuration improves the flow of personnel and materials, ensuring smooth and quick transitions in and out of clean areas. This design minimizes bottlenecks and improves operational efficiency in fast-paced environments.

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  • Multipurpose Applications

    This type of air shower is versatile and can be used for different purposes, such as decontaminating cleanroom equipment or materials in addition to personnel. Its design allows for multi-directional flow, ensuring thorough cleansing of items before entering the clean area.

  • High Contamination Risk Zones

    In high-contamination risk zones where the environment is more prone to external contamination, the three-door air shower room is ideal. It ensures that the ingress of potentially harmful particles from external environments is minimized.

  • Reduced Cross-Contamination

    The three-door design effectively reduces the risk of cross-contamination between personnel or materials, especially in critical production or research environments. This improves overall safety and compliance with industry regulations.

Three-Door Air Shower Configuration

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The three-door air shower typically features a specific configuration that includes air nozzles, HEPA filters, and sensors designed to deliver high-velocity airflow for efficient decontamination.

Index model1`Purifier STD2`Purifier STD3`Purifier STD4`Purifier STD
Material selection1.2mm high quality cold rolled steel plate with paint, painted outer steel plate and stainless steel inner plate, SUS304 inner and outer stainless steel (double doors and floor are both SUS304 stainless steel)"
Applicable number of people1 person2 people (affordable)3.4 people (2 people standard)3.4 people (3 people standard)
Air shower time0-99s adjustable0-99s adjustable0-99s adjustable0-99s adjustable
Number of nozzles12 (both sides)18 (double-sided)24 (double side)36 (double side)
Nozzle diameterΦ30mmΦ30mmΦ30mmΦ30mm
Air outlet speed24-30m/s24-30m/s24-30m/s24-30m/s
Door closerGermany's "Dorma"Germany's "Dorma"
Electronic lock brand"Lishijian" electric lock"Lishijian" electric lock
Control method99.9995% (dust particle size ≥ 0.3μm)
Crystal temperature screen display, electronic interlock, lighting delay
, hidden lock protection, fault alarm prompt, lock screen function"
High-efficiency size600x600x120mm820x600x120mm600x600x120mm600x600x120mm
High-efficiency quantity2246
External dimensions1400W*1000D*2100H1400W*1500D*2100H1400W*2000D*2100H1400W*3000D*2100H
Internal dimensions800w*900D*1960H800w*1400D*1960H800w*1900D*1960H800w*2900D*1960H
Power supply"380V, 50Hz (three-phase five-wire power supply, three fires, one line, and one ground
, 220V and 110V power supply air showers can be customized according to customer requirements)"
Lighting fixtures1 LED embedded light2 LED embedded lights2 LED embedded lights3 LED embedded lights
Number of fans2 sets” 0.55Kw/set2 units ~0.75KW/unit4 units” 0.55Kw/unit6 sets” 0.55KW/set
Total power1.1Kw1.5Kw2.2Kw3.3Kw
Vertical volume (kg)350kg500kg650kg950kg

Three-Door Air Shower Instructions

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1. Operational Guidelines: Ensure all personnel or materials pass through the air shower before entering the cleanroom. Users should position themselves centrally to maximize the effectiveness of the air jets.

2. Usage Process:Upon entering, personnel or materials should be subject to a set amount of airflow time, typically between 30 to 60 seconds, depending on the room size and contamination level. Sensors automatically activate the air jets to remove particles from clothing, equipment, and surfaces.

The air shower should not be used if any component such as the airflow system or HEPA filter is malfunctioning. Routine checks should be conducted to ensure optimal performance.

3. Post-Use Protocol:Once the decontamination process is complete, personnel or materials should exit through the exit door, which is sealed to prevent contamination from entering the clean area. Proper sanitization should be carried out after each use.

Advantages of the Three-Door Air Shower

Enhanced Contamination Control:

The three-door air shower offers superior contamination control by isolating clean and unclean zones, ensuring that contaminants are removed before entering a sensitive environment.

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Efficient Design for High Traffic:

The three-door configuration improves the flow of materials and personnel, reducing the risk of congestion and ensuring that the decontamination process is carried out swiftly and efficiently. This is especially beneficial in high-traffic areas where fast, regular decontamination is required.

Furthermore, the system minimizes the need for manual cleaning, as the air jets effectively remove contaminants without additional intervention. This reduces labor costs and operational downtime, improving overall productivity.

By efficiently handling larger volumes of personnel and equipment, the three-door air shower helps maintain cleanroom integrity, preventing contamination from external sources. This makes it ideal for industries where cleanliness is critical to product quality and regulatory compliance.

Improved Compliance:

The three-door air shower ensures better compliance with industry standards, such as ISO 14644 for cleanrooms and GMP regulations in the Pharmaceutical industry. It helps businesses meet stringent contamination control requirements while reducing the risk of contamination-related failures.

Three-Door Air Shower Price

The cost of a three-door air shower depends on several factors such as size, configuration, filtration capacity, and customization.

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1. Initial Cost

Typically, the price range for a three-door air shower starts from $8,000 to $20,000, depending on the complexity and size of the unit.

2. Customization and Features

Customized models, featuring advanced sensors, additional filtration systems, or specific airflow configurations, can cost more. Customizations may increase the cost by 20-30% over standard models.

3. Long-Term Value

Although the initial investment is higher compared to simpler models, the three-door air shower offers long-term value by reducing contamination risks and ensuring regulatory compliance. It minimizes operational downtime and maintenance costs, making it a wise choice for industries where cleanliness is a top priority.

How to Clean the Three-Door Air Shower?

Maintaining cleanliness within the air shower is essential for optimal performance and contamination control.

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Regular Inspection

Check the air jets and HEPA filters for any dust accumulation or blockages. The filters should be replaced as per the manufacturer’s recommendations to maintain airflow efficiency.

Cleaning Process

  • Turn off the system and carefully clean the interior surfaces with non-abrasive cleaning agents to avoid damaging the finish.

  • Clean the air nozzles and ensure no obstructions are blocking the airflow.

  • Inspect the exhaust system to make sure air is being properly expelled.

Post-Cleaning Maintenance

After cleaning, check the functionality of all components and run a test cycle to verify that the air shower is working effectively. Perform this maintenance regularly to prevent breakdowns and ensure the system is functioning at peak efficiency.

The three-door air shower is an essential tool for maintaining a contamination-free environment, particularly in industries that require strict contamination control. By following proper usage and maintenance protocols, businesses can ensure the longevity and efficiency of their air shower systems, protecting both their products and personnel.

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