Frame Material

The frame of the clean shed is usually made of industrial aluminum profiles, stainless steel squares or painted iron squares. These materials have good strength and stability, can withstand the pressure requirements inside the clean room, and also have good anti-corrosion and anti-rust properties. Aluminum profiles are widely used in clean rooms due to their lightweight, strong and non-rusting properties. Stainless steel is suitable for clean environments with wet or chemical substances due to its strong corrosion resistance. Painted iron is often used in cost-sensitive projects because of its economy and practicality.

Top and Sidewall Materials

The top and side walls of the clean room are made of a variety of materials, including stainless steel, baked cold rolled steel, anti-static grid curtains and acrylic plexiglass. Stainless steel offers excellent corrosion resistance and is suitable for applications where waterproofing is required. Baked cold rolled steel plate provides good protection and aesthetic effect. Anti-static grid curtains and acrylic materials are mainly used to provide transparent windows, while anti-static function, suitable for the electronics industry and other static-sensitive areas.

Air supply unit

The air supply unit of the clean room usually adopts FFU (Fan Filter Unit), which is a kind of integrated fan and filter unit that can provide the necessary clean air flow to ensure the cleanliness inside the clean room, FFU is usually equipped with high-efficiency HEPA filters to intercept the particles in the air and ensure the air quality.

Ceiling and wall materials

The ceiling and wall materials of the clean room need to consider the characteristics of anti-dust, anti-static and easy to clean. Commonly used materials include color steel, stainless steel and aluminum alloy. Color steel plate is widely used in the ceiling and wall of the clean room because of its lightweight, easy to install and economic characteristics. Stainless steel and aluminum alloy are suitable for more demanding clean environments due to their corrosion resistance and robustness.

Definition and Function of Clean Room

Clean room, also known as clean room or clean room, is a kind of air purification equipment that can provide a high cleanliness environment in a specific space. It can effectively remove dust, microorganisms and other pollutants in the air through a highly efficient air filtration system, and at the same time, it can also control the temperature, humidity, pressure and other environmental factors in the room, in order to meet the special requirements of various types of production and scientific research activities. Clean room is widely used in electronics, medicine, food and other industries, to improve product quality, ensure the stability and safety of the production environment plays a vital role.

Structural composition of clean room

Clean room is mainly composed of box, fan, primary air filter, high efficiency filter (HEPA), damping layer, lamps and other parts. The box is usually made of industrial aluminum or stainless steel square, with plastic spraying surface treatment, which is both sturdy and rust-free. Anti-static curtains or toughened glass surrounded by both anti-static and maintain high transparency. The fan filter unit (FFU) is responsible for inhaling and purifying the air through the filter, and then uniformly sending it into the clean shed at a certain wind speed to ensure the cleanliness of the air.

Features and Advantages of Clean Room

The clean room is characterized by compact structure, convenient installation, easy movement and flexible use. It can be used individually or connected to form a strip clean area to meet different clean requirements. Compared with the traditional civil engineering or assembly type clean room, the clean shed has less investment, quick effect and low operation cost. In addition, its modular design makes it easy to improve the cleanliness level, strong scalability, and has a high reuse value.

Application Scenarios of Clean Room

Clean room has a wide range of applications in many industries, especially in those fields that require high environmental cleanliness is indispensable. For example, in the electronics manufacturing industry, clean booths are used to assemble precision components to prevent dust from affecting product quality; in the pharmaceutical industry, clean booths provide the necessary environment for the production of sterile drugs; and in the food industry, clean booths ensure food safety and avoid contamination in the production process.

Preparation before installation

Before installing the cleanroom, the first task is to thoroughly clean and disinfect the installation site to ensure that the floor is level, dust-free and germ-free to meet the basic cleanliness requirements of the cleanroom. At the same time, it is necessary to prepare all the necessary materials and tools, including but not limited to the clean room frame, filters, sealing materials, screwdrivers, leveling scales and so on.

Framing and Support Structure Installation

According to the design drawings of the clean room, determine the installation location and size requirements, and then begin to assemble the frame and support structure. Aluminum alloy profiles or stainless steel are usually used as materials to ensure the stability and reliability of the structure. If the clean room is large in size, additional support points are required in the center to ensure personnel safety.

Filtration system and FFU fan installation

High-efficiency filters are the key components of air purification, which can effectively remove dust and bacteria in the air and ensure the cleanliness of the interior of the clean room, while the FFU fan is an important component responsible for generating strong airflow and ensuring air circulation. Their installation position and quantity should be determined according to the specific requirements of the clean room.

Installation of doors, windows and sealing materials

The installation of doors and windows of the clean room is equally important, and sealing materials need to be used to ensure the sealing performance of the clean room and prevent the entry of external pollutants. The installation of sealing strips should ensure that there is no air leakage to maintain the cleanliness of the interior of the clean room.

Lighting and ventilation equipment installation

According to the use of clean room requirements, select the appropriate lighting equipment and installation and commissioning to ensure uniformity and stability of lighting. The installation of ventilation equipment is also important to regulate the temperature and humidity inside the clean room to maintain a suitable working environment.

System testing and commissioning

After the installation is completed, the clean room needs to be fully tested and debugged, including checking the filtering effect, wind speed, airflow distribution and other key indicators. Be sure to ensure that the performance of the clean room meets the expected requirements, and through the professional equipment to test and record the test results.

Maintenance

In the process of using the clean room, it needs to be cleaned and maintained regularly to keep its interior clean and hygienic. Regularly check the integrity and performance of the frame, filters, sealing materials and other components of the clean room, and timely replacement of damaged or aging parts.

Cleanliness Standards

Cleanliness testing is an important indicator of clean room performance and is usually expressed in terms of the maximum number of particles and microorganisms allowed per unit volume of air. For example, the ISO 14644-1 standard specifies particle count limits for different cleanliness classes, e.g. ISO 14644-1 Class 1 cleanrooms require that no more than 1,000 PCM of particles per cubic meter be present.

Temperature and Humidity Control

Temperature and humidity control in the cleanroom is equally important and needs to be adjusted to the appropriate range according to the requirements of the production process. For example, some industry standards specify a temperature range of 18°C to 26°C and a relative humidity range of 40% to 65%.

Airflow speed and direction

In order to effectively eliminate contaminants, the clean room needs to maintain a certain airflow speed and direction, usually using a unidirectional flow or laminar flow design, to ensure that the air flows from the high cleanliness area to the low cleanliness area.

Differential Pressure Control

Clean shed and other areas need to maintain a certain pressure difference to prevent pollutants from flowing into or out of the clean area. In general, the pressure difference between neighboring clean rooms should be maintained between 5-10 Pa, and the pressure difference between the clean room and the outside should be no less than 10 Pa.

Noise and illumination

The noise level in the clean room should not be too high, so as not to interfere with the operation of the staff and the normal operation of the equipment. The illumination test is to determine the illumination level and uniformity of illumination in the clean room to ensure that the staff can observe clearly.

Other Testing Items

In addition to the standards listed above, items such as airflow, air velocity, vibration, and microbial control may also be included. All of these items are tested to ensure that the clean room meets the intended cleanliness requirements and satisfies industry-specific production standards.