What other commonly used purification equipment are there in the electronics workshop?

In addition to the air shower room, the electronics workshop also has the following commonly used purification equipment:
1. Cargo shower room
1. Basic function
- The cargo shower room is mainly used for goods entering and exiting the clean area. When raw materials, equipment, and other goods need to enter the electronics workshop, the cargo shower room can purify them. It uses a strong clean airflow to blow off dust and impurities on the surface of the goods, reducing the pollution caused by the entry of goods.
- For example, in the electronic chip production workshop, raw materials such as wafers used to manufacture chips usually need to be purified by the cargo shower room. Because wafers are extremely sensitive to tiny particles, even very tiny dust particles attached to their surface may cause defects in the chip during subsequent precision processing such as lithography and etching.
2. Sealing and protection function
- The cargo shower room also plays the role of a closed clean room. Its structural design can effectively isolate the external environment from the internal environment of the electronics workshop. When the goods are purified in the cargo shower room, its internal air circulation system can prevent the unfiltered air from the outside from mixing with the clean air inside the workshop, maintaining the cleanliness and air pressure stability inside the workshop.
2. Transfer Window
1. Standard Transfer Window and Air Shower Transfer Window
A transfer window is a device used for transferring items between a clean room and a non-clean room. Standard transfer windows can reduce the number of times the door is opened between the clean area and the non-clean area, thereby effectively reducing cross-contamination. Its double-door interlocking design ensures that the doors on both sides will not be opened at the same time.
- For example, in the electronics workshop, when some tools need to be transferred from the maintenance room (non-clean area) to the production area (clean area), the standard transfer window can be used. On the basis of the standard transfer window, the air shower transfer window can also use clean airflow to blow and purify the transferred items, further ensuring that the items entering the clean area meet the clean requirements.
2. Application Scenarios
- In the material distribution process of the electronics workshop, the transfer window plays an important role. For example, when transferring electronic components from the warehouse (relatively low cleanliness) to the highly clean area of ​​the production workshop, the transfer window can complete the handover of items without destroying the clean environment of the workshop.
3. Laminar Flow Hood
1. Working Principle
- The laminar flow hood is mainly composed of a box, a fan, a high-efficiency filter, and other components. It can form a uniform flow layer after the air passes through the high-efficiency filter so that the work area maintains a high degree of cleanliness. Its working method is like holding up a "clean air umbrella" above the work area.
- For example, some high-precision electronic component assembly stations in the electronics workshop require a local ultra-clean environment. The laminar flow hood can provide these stations with a stable one-way flow of clean air, continuously taking away pollutants such as dust particles in the air, and ensuring that the electronic components are not polluted during the assembly process.
2. Installation flexibility
- The laminar flow hood can be installed flexibly and can be used alone or in combination. This feature enables the electronics workshop to personalize the clean area according to different production processes and layout requirements. For example, on a production line of electronic products, laminar flow hoods can be installed separately for key welding stations and chip installation stations to meet the cleanliness requirements of different links.
IV. Clean bench
1. Types and applications
- Clean benches are divided into vertical flow and horizontal flow benches. The airflow of the vertical flow clean bench is vertically downward, and the airflow of the horizontal flow clean bench is horizontal. They are widely used in production areas that require high cleanliness locally, such as laboratories, biopharmaceuticals, and precision electronic component production in electronics factories.
- For example, in the microscope inspection station of an electronics factory, it is necessary to observe whether the microstructure of the electronic components has defects in a clean environment. The vertical flow clean bench can provide a downward clean airflow to directly take away the particles generated during the inspection process to ensure the cleanliness of the observation area.
2. Cleanliness effect
- The clean bench can form a relatively independent clean space in its working area, and its internal high-efficiency filter can filter out most of the dust particles, microorganisms, and other pollutants. Generally speaking, the cleanliness inside the clean bench can reach ISO 5 or even higher standards, providing a good environment for operations with extremely high cleanliness requirements in electronic workshops.