Principles of cleanroom cleaning: Airflow → Primary filtration → Air conditioning → Intermediate filtration → Blower fan → Ductwork → High-efficiency air outlet → Blowing into the room → Removal of dust, bacteria, and small particles → Air return window → Repeat the primary filtration process.

Currently, cleanroom technology has become an indispensable foundation in industries such as semiconductors, precision manufacturing, LCD screen production, optical manufacturing, circuit board production, and biochemistry, pharmaceuticals, and food processing. In recent years, due to technological advancements, the demand for high precision and miniaturization of products has become increasingly urgent. For example, the research and production of ultra-large-scale integrated circuits have become key projects prioritized by countries worldwide in the development of science and technology, with design philosophy and construction technology playing a leading role in the industry.

I. Cleanroom technology typically includes:

1. Clean production area;

2. Auxiliary cleanrooms (including personnel cleaning rooms, material cleaning rooms, and some living areas);

3. Management area (including offices, duty rooms, management, and rest areas);

4. Backup area (including clean air conditioning systems, electrical rooms, purified water and gas rooms, and heating/cooling equipment rooms).

II. Principles of cleanroom cleaning:

Airflow → Primary filtration → Air conditioning → Intermediate filtration → Blower fan → Ductwork → High-efficiency air outlet → Blowing into the room → Removal of dust, bacteria, and small particles → Air return window → Repeat the primary filtration process to achieve cleaning objectives.

III. Cleanroom cleaning parameters:

1. Air exchange rate: Class 100,000 ≥15 times; Class 10,000 ≥20 times; Class 1,000 ≥30 times. Pressure differential: Main room compared to adjacent room ≥5Pa.

2. Average wind speed: Class 10, Class 100 is 0.3-0.5m/s; Winter temperature >16°C; Summer temperature <26°C; fluctuation ±2°C.

3. Humidity 45-65%; GMP powder rooms should maintain humidity around 50%; electronic rooms require slightly higher humidity to prevent static electricity.

4. Noise ≤65dB(A); Fresh air supply accounts for 10%-30% of total air supply; Illumination 300LX.

IV. Cleanroom construction materials:

1. Walls and ceilings are usually made of 50mm thick color steel sandwich panels, known for their aesthetics and rigidity. Curved wall corners, window frames, and windows are typically made of specialized anodized aluminum.

2. Floors can be made of epoxy self-leveling floors or high-grade wear-resistant plastic sheets. Anti-static options are available if required.

3. Air ducts are made of hot-dip galvanized sheets, with fire-resistant PF foam boards for effective insulation.

4. High-efficiency air outlets use stainless steel frames, are aesthetically clean, and feature anodized aluminum mesh panels that are rust-free, dust-resistant, and easy to clean.

V. Cleanroom technical solutions:

During the technical design process, it is essential to enhance understanding of cleanroom technical solutions in the optics and microelectronics industries. Determine whether the project involves new construction or renovation of an old factory, and combine this with specific production process requirements to define the necessary cleanliness, temperature, and humidity levels. Then, based on the project's specifics and the manufacturer's financial capacity, integrate all factors to determine the appropriate cleanroom solution, ensuring it meets production needs, stays within budget, and is energy-efficient and practical.