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An air shower is a specialized space used in cleanroom environments to decontaminate personnel before they enter the controlled CleanRoom areas. It is designed to remove dust, particles, and other contaminants from the clothing and body of individuals who are entering the cleanroom, helping to maintain the cleanliness and integrity of the controlled environment.
Definition of air shower
Air shower is a kind of equipment used to control air cleanliness, which is widely used in pharmaceutical, Electronic, food and other industries. Its main function is to effectively remove dust and bacteria through high-speed air flow for people and goods entering the clean area. The air shower is usually set up between the clean room and the external environment, as an important protective barrier.
The classification of the air shower
According to different design and functional requirements, air shower can be divided into the following categories:
suitable for small-scale clean demand, usually used for single person in and out.
Multi-person air shower
can accommodate multiple people at the same time, suitable for places with large flow of people.
using stainless steel material, with good corrosion resistance and easy to clean, suitable for the requirements of high cleanliness and sanitary conditions of the environment.
specially designed for goods and equipment, suitable for dust removal and sterilization of goods before they enter the clean area, to ensure that the goods meet the required cleanliness standard before entering the clean area.
Customized air shower:
according to the specific industry or customer needs, tailor-made air shower, to meet the special cleanliness and space requirements.
The role of the air shower
The air shower plays a vital role in the Clean room environment, its main functions include:
Dust removal:
through high-speed airflow to effectively remove dust and particles on the surface of personnel and goods, reduce the source of pollution into the clean area.
Bacteria removal:
through high efficiency filtration and air circulation, reduce the number of microorganisms and ensure that the environment entering the clean area meets the hygiene standard.
Air isolation:
as an isolation barrier between the clean area and the external environment, preventing external pollutants from entering the clean area.
Improve work efficiency:
provide convenient access for staff, while reducing the risk of contamination caused by improper operation.
The working principle of the air shower
Air shower is a kind of local purification equipment with strong versatility, installed between clean room and non-clean room. When people and goods to enter the clean area, need to be blown through the air shower. The Clean air blown out can remove the dust carried by people and goods, effectively blocking or reducing the dust source into the clean area. The front and rear doors of the air shower are electronically interlocked, which can play the role of an airlock to prevent the unpurified air from entering the clean area.
The specific workflow is as follows:
Air filtration:
The air shower is equipped with a high-efficiency air filter (HEPA or ULPA), which can effectively capture micron-sized particles and bacteria.
Air circulation:
the fan in the air shower sends the filtered clean air out at a high speed to form an airflow that quickly covers the surface of the personnel or articles.
Spraying and exhausting:
When personnel or goods enter the air shower, the door will be closed automatically, the spraying device will be activated, and the high air velocity airflow will blow away the pollutants for a sustained period of time.
Door control system:
the air shower is usually equipped with a door control system to ensure that in the process of dust removal, the external door can not be opened at the same time to avoid pollutants.
The use of air shower
The use of the air shower should follow the following steps to ensure maximum cleanliness:
Preparation before entering:
Before entering the air shower, clothing should be checked to see if it is clean to avoid carrying too many particles.
Entering the air shower:
Open the air shower door, enter quickly and close the door.
Start the equipment:
according to the operating instructions of the air shower, start the air shower equipment, usually there will be timing settings, the spray time is usually 10-30 seconds.
Leave after completion:
After completing the air shower, wait for the equipment to close automatically or manually, to ensure that there is no pollutant attached before entering the clean area.
Air shower maintenance
In order to ensure the effectiveness and reliability of the air shower, regular maintenance and maintenance is essential:
Regular cleaning:
Regularly clean the inside of the air shower, especially the airflow nozzles and filters, to avoid the accumulation of dust and particles.
Replacement of filters:
According to the frequency of use and environmental conditions, check and replace the high-efficiency filters (HEPA or ULPA) on a regular basis to ensure their filtering effect.
Inspect fans and electrical systems:
Regularly inspect fans, electronic interlock systems and other electrical components of air showers to ensure their proper functioning and prevent malfunctions.
Functional tests:
Conduct regular functional tests of the air shower, including Wind speed, airflow distribution and electronic interlock function, to ensure that the equipment performance meets the standards.
Record maintenance logs:
Establish maintenance logs with detailed records of each cleaning, inspection and replacement in order to track the maintenance history of the equipment.
Air showers play an important role in modern cleanroom environments. Their effective dust removal and isolation functions can significantly improve air cleanliness and protect products and production processes. Choosing the right type of air shower, and operating and maintaining it according to specifications, ensures the efficient operation of the cleanroom and provides the necessary environmental safeguards for related industries. Whether it is people or goods, going through an air shower before entering a clean area is a critical step in ensuring A CleanRoom environment.
