The transfer window is the general auxiliary purification equipment of the clean room, which is mainly installed on the wall of the clean room. It is used for the transfer of small items between the clean area and the clean area, and between the non clean area and the clean area, so as to reduce the number of times the clean room is opened, and greatly reduce the pollution of the clean area. The transfer window is widely used in micro technology, biological laboratory, pharmacy, hospital, food processing, LCD display, electronic factory and many other industries that need air purification.

The transfer window used in the medical environment is called the medical transfer window. The medical transfer window is usually used in the negative pressure isolation ward or clean operating room to reduce the number of open doors and reduce the indoor pollution from the outside. The negative pressure isolation ward is usually equipped with a medical transfer window, which is used to transfer medical and living supplies to meet the daily needs of patients in the ward. At the same time, it can reduce the number of times medical personnel enter and exit the negative pressure ward, reduce the probability of infection, and protect the safety of medical personnel.

In order to maintain a clean and sterile environment, the medical transfer window is generally equipped with an ultraviolet germicidal lamp. Before each use of the transfer window, the ultraviolet lamp needs to be turned on to disinfect the transfer window, and the ultraviolet lamp needs to be turned on during use. The medical transmission window adopts double door closed interlocking transmission window, and the ultraviolet disinfection lamp socket is set near the inner wall or outer wall of the double window room. The article delivery window mentioned here is what we call the medical delivery window. The double door interlock function is configured as required to reduce direct contact inside and outside the ward. The necessary ultraviolet disinfection lamp socket required here is also used to prepare for disinfection of the transfer items in the transfer window. It is the difference between the transfer window in the negative pressure ward and the transfer window in other areas.

The medical transfer window is usually made of stainless steel, which has a certain strength and firmness, and the surface is smooth, so it is not easy to generate dust. More importantly, stainless steel has a certain tolerance to the hospital used detergent and disinfectant, without the risk of rust, and will not affect the firmness and sealing of the transfer window. There are also some small details in the internal structure of the medical transfer window that can be improved. For example, the interior is designed as an arc angle, which is convenient for cleaning and also beautiful.

Self purification transfer window

Self purification transfer window is also a type of transfer window, named after its function of purifying air. Fans and filters are installed in the self-cleaning transfer window, which can purify the air and objects inside the transfer window, so that the objects and the air inside the transfer window can reach a high degree of cleanliness. It plays an important role in some places with high cleanliness requirements. It can protect the environment with high cleanliness from the delivery of goods and reduce cleanliness, reduce pollution, save costs and improve air quality.

Places with high cleanliness requirements have strict requirements for articles (including raw materials and auxiliary materials) entering the clean room. On the one hand, it is necessary to ensure that the products enter the clean room without pollution, and on the other hand, it is also necessary to purify the products to reduce the impact of articles entering the clean room on the cleanliness of the clean room. Both of these aspects make the existence of self-cleaning transfer window very important. An efficient filter is installed inside the self-cleaning transfer window, which can circulate and purify the air in the transfer window to maintain a certain degree of cleanliness. When transferring items, let the items stay in the transfer window as long as possible to ensure that the dust on the surface of the items is completely purified.

Air shower transmission window

The air shower transfer window is a special self-cleaning transfer window, which can perform the self-cleaning function. However, the air shower transfer window has the deluge blowing function, which is different from the conventional self-cleaning transfer window. It does not deliver air flow downward through the top uniform flow film, but blows clean air into the transfer window through the nozzle. The air flow speed is fast, generally about 22m/s, while the air flow speed inside the conventional self-cleaning transfer window is generally between 0.35 and 0.45m/s. The air shower transmission window can purify the air flow inside the transmission window and the transmission items faster, and the purification time is shorter. It is more practical in some occasions where more items need to be delivered in a short time, which reduces the transmission time and ensures the cleanliness of the transmission items.

The air shower transfer window is an auxiliary purification equipment for laboratories and hospitals. It is used to transfer materials between clean areas and clean areas, and between non clean areas and clean areas, so as to reduce the pollution in clean areas. The air shower transmission window consists of fan, filter, nozzle, air return outlet, box, etc. In order to achieve the function of shower, the nozzle installed inside is roughly the same as the nozzle used in the air shower room. The air velocity at the nozzle outlet is more than 20 m/s, which can quickly remove the dust particles on the transfer items, so as to purify the air.

Here we summarize the concepts and differences of medical transfer window, self-cleaning transfer window and air shower transfer window: medical transfer window is classified according to the place of use, and self-cleaning transfer window and air shower transfer window are classified according to the principle and function. All three belong to the transfer window. The main function is to reduce the number of times the clean room is opened and reduce the external pollution to the clean room.

The cleanliness of the air shower transfer window is generally Class 1000, and there are also special Class 100 or Class 10000 air shower transfer windows. The cleanliness level of the delivery window is generally selected according to the use environment of the air shower delivery window and the requirements of the delivered articles!