What types of air shower transfer Windows are there?

Air shower transfer Windows can be classified into various types based on different criteria (such as structural form, functional characteristics, applicable scenarios, etc.), and each type has its focus in design and application. The following are common classifications and specific types:
I. Classification by door opening method
This is the most fundamental classification method, mainly distinguished by the opening and interlocking forms of the door. The core is to prevent direct air circulation between the clean area and the non-clean area through the interlocking function of the door.
Double-door air shower transfer window
The most common type has a door on each side (usually made of stainless steel) and uses an electronic interlock device (electromagnetic lock or mechanical lock) to ensure that when one side door is opened, the other side door cannot be opened, avoiding cross-contamination of air. It is suitable for most clean environments (such as pharmaceutical workshops and electronic workshops), with a simple structure and relatively low cost.
Single-door air shower transfer window
Only one side has an openable door, while the other side is a fixed panel (or sealed with the wall). It is usually used in scenarios with a single transmission direction (such as unidirectional transmission from a non-clean area to a clean area), but its application range is relatively narrow, and it is mainly used in special, customized scenarios.
Ii. Classification by the form of the air shower airflow
The purification effect on the surface of objects is affected by the sweeping direction and coverage range of the high-speed clean air flow.
Top-blowing air shower transfer window
The air shower device is installed at the top of the transfer window and sends out a high-speed vertical downward airflow (with a wind speed usually ≥20m/s) through a high-efficiency filter (HEPA or ULPA) to blow the top and sides of the items. It is suitable for transporting small-sized and low-height items (such as reagent bottles and small tools), with the airflow coverage concentrated at the top.
Side-blowing air shower transfer window
The air shower devices are installed on the inner walls on both sides of the transfer window. The airflow blows horizontally against each other, covering both sides and the top of the items. It is suitable for transferring longer or wider items (such as boards, long tools), and can more comprehensively remove the particles adhering to the sides.
Full air shower transfer window
Air shower devices are installed on the top and both sides, forming a 360° three-dimensional blowing airflow, which has the best purification effect. It is suitable for scenarios with extremely high cleanliness requirements (such as semiconductor chip transfer, biosafety laboratories), and can remove dust and microorganisms from all surfaces of objects.
Iii. Classification by Functional Characteristics
Depending on the different additional functions, it meets the demands of special scenarios (such as anti-corrosion, explosion-proof, sterilization, etc.).
Ordinary air shower transfer window
It only has the basic "interlock + air shower" function. It purifies through high-speed air flow sweeping without any additional special design. It is suitable for scenarios with general cleanliness requirements (such as food packaging workshops, ordinary laboratories).
Ultraviolet air shower transfer window
Install ultraviolet (UV) sterilization lamps inside the transfer window. While the air shower is in place, it can kill the microorganisms (bacteria, viruses, etc.) on the surface of the items through ultraviolet irradiation, enhancing the disinfection effect. It is suitable for places with strict microbial control, such as medical laboratories, biological laboratories, and operating rooms, but attention should be paid to the harm of ultraviolet rays to the human body (it needs to be used in conjunction with delayed shutdown or induction protection devices).
Explosion-proof air shower transfer window
It adopts explosion-proof motors, explosion-proof lamps, and sealed structures, and is suitable for places with flammable and explosive environments (such as chemical workshops, fuel and pharmaceutical workshops), to prevent the generation of electric sparks during the air shower process from causing danger, and meets the explosion-proof grade requirements (such as Ex dⅡCT4).
Anti-corrosion air shower transfer window
The inner wall and door panel are made of 316L stainless steel (resistant to acid and alkali corrosion), and the sealing parts are made of chemically resistant materials. It is suitable for scenarios where corrosive items (such as chemical reagents, acid, and alkali solutions) are transferred (such as chemical laboratories, electroplating workshops), to prevent equipment from being corroded and damaged.
Self-cleaning air shower transfer window
It is equipped with a built-in continuously operating air circulation purification system (high-efficiency filter + fan), which can maintain internal cleanliness even when no items are being transferred. It is suitable for scenarios that require a long-term sterile internal environment (such as biosafety level 3 laboratories).
Iv. Classification by size and specification
According to the internal volume size, it can adapt to the transfer requirements of items of different volumes.
Small air shower transfer window
It has a relatively small internal size (usually width ≤600mm and height ≤500mm), making it suitable for transporting small-volume items (such as reagent bottles, Petri dishes, and electronic components). It is flexible to install and suitable for clean areas with limited space (such as beside laboratory operation tables).
Medium-sized air shower transfer window
With medium internal dimensions (width 600-1200mm, height 500-1000mm), it can convey medium-volume items (such as packaging materials, tool boxes, and small equipment accessories), and is a commonly used type in the pharmaceutical and electronic industries.
Large air shower transfer window
It has a relatively large internal size (width ≥1200mm, height ≥1000mm), and is used for transporting large items (such as medical devices, large molds, and equipment components). It needs to be customized according to the on-site space and is commonly found in aerospace and large equipment production workshops.
V. Classification by Control Mode
It is classified according to the degree of automation of operation and control.
Manually control the air shower transfer window.
The air shower program can be manually started by pressing a button. The opening and closing of the door need to be manually operated (in combination with mechanical interlocking). It has a simple structure and low cost, and is suitable for scenarios with low requirements for automation.
Automatic control air shower transfer window
It adopts an infrared sensing or PLC control system. When items are placed in, the air shower program is automatically started (set the purging time, usually 10 to 30 seconds). After the air shower is completed, the other side door is automatically unlocked. Some models can also be linked to the differential pressure control system of the clean room, which is suitable for highly automated production lines (such as electronic chip workshops).
Different types of air shower transfer Windows should be selected based on the cleanliness requirements of the specific scene, the characteristics of the transferred items (such as size, corrosiveness, flammability, and explosiveness etc.), and operational needs. The core objective is to efficiently transfer items while minimizing the risk of pollution to the greatest extent.