Airflow Regime: Recirculating airflow

• The working principle of air shower transfer window is introduced as follows:

• Structural design: the air shower transfer window is usually made of stainless steel or other anti-corrosion materials, with an internal air shower system.

• Objects placed: the objects to be transferred are placed in the transfer window.

• Door control system: the transfer window is equipped with a double door system, the inner and outer doors cannot be opened at the same time to prevent contamination.

• Activate air shower: When the inner door is closed, the user can press the start button to activate the air shower system.

• Air Filtration: High efficiency filters (such as HEPA filters) in the air shower system filter particles and microorganisms in the air.

• High Velocity Airflow: Filtered air is ejected at a high velocity, creating an airflow that cleans the surface of the item.

• Time Setting: The air drenching time is usually set between a few seconds to more than ten seconds, adjusted according to demand.

• Exit: After the air drenching process, the inner door opens and the items are transferred to the clean area.

• Maintenance and inspection: Regularly check and replace the filter to ensure the effect of air shower.

• The above is an extremely brief introduction of the working principle of air shower transfer window.

• Support stand or Base box

• Onboard LED light and/or UV light

• Internal shelves

• Door release buttons

• Interlock release rocker switches

• Buzzer system (to alert personnel on the opposite side during material transfer)

• Intercom system

• Fan fault alarms with customized blowers

• Lead shielding

• Roller Conveyors (only for DFLH)

• Auto sliding PVC doors (only for DFLH)

• Rails to hang gowns (only for DFLH)

1. What is an Air Shower Pass Box?

An Air Shower Pass Box is a specialized equipment designed to facilitate the transfer of materials and personnel in controlled environments, such as cleanrooms. It serves as a barrier that reduces the risk of contamination by utilizing a high-velocity air shower system. This system blows filtered air onto items as they pass through, effectively removing any particles or contaminants before they enter a clean area.

2. How does an Air Shower Pass Box function?

An Air Shower Pass Box operates by creating a controlled environment for material transfer. When an item is placed inside the box, the doors are closed, and the air shower system is activated. High-velocity air jets blow air from multiple angles, dislodging contaminants from the surface of the items. The air is filtered using HEPA or ULPA filters to ensure that any particles are captured before they can re-enter the cleanroom.

3. What are the benefits of using a Cleanroom Pass Box?

Using a Cleanroom Pass Box offers numerous advantages, including:

• Reduction of contamination risk

• Enhanced cleanliness of the working environment

• Improved efficiency in material handling

These benefits are particularly crucial in industries such as pharmaceuticals, biotechnology, and electronics manufacturing, where maintaining strict cleanliness standards is essential for product quality and safety.

4. What is the difference between an Air Shower Pass Box and a Cleanroom Pass Box?

The primary difference between an Air Shower Pass Box and a Cleanroom Pass Box lies in their functionality. An Air Shower Pass Box specifically includes an air shower feature that uses high-velocity air to remove contaminants from surfaces before entering a cleanroom. In contrast, a Cleanroom Pass Box generally refers to any pass-through system designed for material transfer in clean environments, which may or may not include air shower capabilities. This distinction is important when selecting equipment based on contamination control needs.

5. How do you install an Air Shower Pass Box?

Installing an Air Shower Pass Box involves several key steps. First, ensure the location is appropriate for easy access to the cleanroom and conforms to building regulations. Next, prepare the area by ensuring adequate electrical and airflow connections. The box should be securely mounted, ensuring that both the interior and exterior doors seal properly to prevent air leakage. Finally, conduct a thorough test of the air shower system to confirm it operates effectively and meets the required specifications.

6. What are the dimensions of a typical Cleanroom Pass Box?

The dimensions of a typical Cleanroom Pass Box can vary significantly depending on its intended application and design. However, a standard pass box may measure approximately:

• Width: 24 to 36 inches

• Height: 30 to 36 inches

• Depth: 24 to 30 inches

Custom sizes are also available to accommodate specific requirements of different facilities or processes.

7. How does the air filtration system in an Air Shower Pass Box work?

The air filtration system in an Air Shower Pass Box plays a critical role in maintaining a contamination-free environment. It typically incorporates HEPA or ULPA filters that trap particles down to 0.3 microns in size. When the air shower is activated, air is drawn into the system and passed through these filters, ensuring that any airborne contaminants are removed before the air is expelled through the nozzles onto the items inside the pass box. This process significantly reduces the risk of contamination during material transfer.

8. What industries use Cleanroom Pass Boxes?

Cleanroom Pass Boxes are utilized in various industries where contamination control is paramount. Some of the key sectors include:

• Pharmaceuticals

• Biotechnology

• Electronics manufacturing

• Aerospace

• Medical device production

These industries rely on Cleanroom Pass Boxes to ensure that materials entering sensitive environments are free from contaminants, thereby protecting product integrity and safety.

9. How often should the filters in an Air Shower Pass Box be replaced?

The frequency of filter replacement in an Air Shower Pass Box depends on several factors, including the usage level and the specific environment in which it operates. Generally, filters should be inspected regularly, with recommendations suggesting replacement every 6 to 12 months. However, in high-traffic areas or environments with higher contamination levels, more frequent changes may be necessary to maintain optimal air quality and system performance.

10. Can I customize the size of a Cleanroom Pass Box?

Yes, Cleanroom Pass Boxes can often be customized to meet specific operational requirements. Manufacturers typically offer a range of sizes and configurations to fit different spaces and workflows. When customizing, factors to consider include:

• Dimensions (height, width, and depth)

• Interior layout (shelves or compartments)

• Additional features (air showers, lighting, or monitoring systems)

This customization ensures that the pass box effectively integrates into existing cleanroom environments while meeting specific hygiene standards.

11. What is the typical airflow speed in an Air Shower Pass Box?

The typical airflow speed in an Air Shower Pass Box ranges from 20 to 30 meters per second (approximately 65 to 98 feet per second). This high-velocity airflow is crucial for effectively removing particles and contaminants from surfaces. The design of the air shower system, including the number and arrangement of nozzles, is optimized to create turbulence and enhance the cleaning effect, ensuring that the air shower operates efficiently during material transfer.

12. How do you maintain an Air Shower Pass Box?

Maintaining an Air Shower Pass Box involves regular inspections and cleaning to ensure optimal performance. Key maintenance tasks include:

• Inspecting and replacing filters as needed

• Cleaning the interior and exterior surfaces to remove any buildup

• Checking the functionality of the air shower system and nozzles

Additionally, it is important to monitor the airflow speed and pressure to ensure they remain within specified limits. Regular maintenance helps prolong the lifespan of the equipment and maintain the cleanliness of the controlled environment.

13. What are the key features to look for in a Cleanroom Pass Box?

When selecting a Cleanroom Pass Box, several key features should be considered to ensure it meets operational requirements. Important features include:

• Air filtration system (HEPA or ULPA filters)

• Sealing mechanisms for doors

• Material construction (stainless steel or other non-porous materials)

• Size and capacity tailored to your needs

• Additional functionalities, such as integrated air showers or monitoring systems

These features contribute to the effectiveness of the pass box in preventing contamination and maintaining cleanroom standards.

14. How does an Air Shower Pass Box help prevent contamination?

An Air Shower Pass Box helps prevent contamination by creating a controlled environment for the transfer of materials. When items pass through the air shower, high-velocity air jets blow away contaminants from their surfaces. This process significantly reduces the number of particles that could enter the cleanroom, thereby ensuring that the environment remains sterile. Additionally, the use of HEPA or ULPA filters in the air shower helps to capture any airborne particles, further enhancing contamination control.

15. What types of materials are used to manufacture Cleanroom Pass Boxes?

Cleanroom Pass Boxes are typically manufactured from materials that are durable and easy to clean. Common materials include:

• Stainless steel (preferred for its non-porous surface and resistance to corrosion)

• Powder-coated steel (offering a cost-effective alternative)

• Aluminum (lightweight and resistant to corrosion)

These materials are chosen for their ability to withstand the rigorous cleaning protocols required in cleanroom environments while maintaining a high level of hygiene and integrity.