• Working Principle

  The working principle of the clean room is based on air filtration and flow control. The fan is located at the top of the clean room and is responsible for drawing air in and passing it through a primary filter for initial filtration to remove larger particles. Subsequently, the air is further purified by a high-efficiency filter, which removes even finer particles, and finally it is delivered uniformly at a certain air speed, forming a homogenous layer that ensures a vertical unidirectional flow of clean air, thus maintaining the cleanliness of the work area.

• Structural Characteristics

  The clean room is usually designed as an assembled structure with a solid and beautiful frame that does not rust or produce dust. Antistatic curtains or toughened glass are usually used on the periphery to achieve good anti-static effect and high transparency. The internal purification level can range from class 100 to class 10,000, which is suitable for areas that require localized high cleanliness, such as assembly line operation areas or high-precision product assembly areas.

Installation Steps

• Assemble the frame

  According to the design drawings, determine the installation location and size requirements, use aluminum alloy profiles and other materials to assemble the frame and support structure of the clean room to ensure stability and reliability.

• Installation of high efficiency filter and FFU fan

  First, install the high-efficiency filter, and then install the FFU fan in the specified position and connect it to the power supply; the FFU fan is the key component for maintaining air circulation in the clean room.

• Installation of walls and ceilings

  Special materials such as stainless steel are used to ensure the cleanliness of the interior of the clean room and to provide good maintenance performance.

• Installation of doors and windows

  According to the design requirements, use appropriate materials such as PVC curtains or automatic doors to ensure good sealing performance.

• Installation of lighting and ventilation equipment

  According to the requirements of the clean room, select the appropriate lighting and ventilation equipment and install and debug to ensure the uniformity of lighting and ventilation effectiveness.

• System debugging and testing

  After the installation is completed, carry out comprehensive debugging of the clean room, including checking the operation of the FFU fan, the working condition of the filter, and whether there is any air leakage and other problems inside the clean room.

Precautions

• Avoid installing the clean room in dusty, humid or salty places.

• During installation, clean dust from the surface of all components, especially the frame and FFU fan.

• Installers should wear dust-free clothing and take appropriate protective measures as required.

• Dust Particle Count Test

  Dust particle count is a key indicator for evaluating the performance of a clean room. According to ISO 14644-1, the number of suspended particles inside the clean room should be controlled within a specific range. The maximum permissible number is 3500 particles/m³ for static conditions and 7500 particles/m³ for dynamic conditions. For testing, a laser dust particle counter is usually used to count and analyze the dust particles by collecting air samples.

• Air Velocity Measurement

  Wind speed test is used to measure the air mobility in the clean room to ensure the normal operation and reasonable configuration of air purification equipment. The air velocity in the clean room is generally maintained between 0.2-0.5m/s. The air velocity in the clean room can be measured using an anemometer. When testing, you can use an anemometer to measure the air velocity at the air outlet or air duct.

• The number of air changes detection

  The number of air changes reflects the frequency of air renewal in the clean room, directly related to the cleanliness and purification equipment load. In general, the number of air changes should be controlled at 3-5 times per hour.

• Temperature and humidity detection

  Temperature and humidity on the clean room environment has a significant impact on the appropriate temperature and humidity not only to ensure comfort, but also to ensure the stability of product quality. Generally speaking, the temperature in the clean room should be controlled between 22-25°C, and the humidity should be controlled between 50-70%.

• Pressure testing

  Pressure testing is used to measure the sealing performance of the cleanroom to ensure that no contamination can penetrate from the outside while preventing the clean air inside from leaking out. The pressure inside the clean room should be slightly higher than the outdoor pressure by 5-10 Pa.