A Comprehensive Analysis of Clean Workshop Engineering
2024.11.07
In modern industrial production and scientific research fields, the importance of clean workshops is self - evident. Guangzhou Kunling Purification Equipment Co., Ltd., as a professional enterprise in the industry, will comprehensively analyze clean workshop engineering for you today, taking you deep into this crucial area that guarantees product quality and production environment.
1. Concept and Significance of Clean Workshops
A clean workshop refers to a specially designed room that excludes microparticles, harmful air, bacteria and other pollutants in the air within a certain space range, and controls the indoor temperature, cleanliness, indoor pressure, air velocity and air distribution, noise, vibration, lighting, and static electricity within a certain required range. It is widely used in industries with harsh environmental requirements such as electronics, pharmaceuticals, food, bio - engineering, medical care, and aerospace.
For the electronics industry, tiny dust particles may cause chips to short - circuit or malfunction. Clean workshops can ensure that the chip manufacturing process is free from pollution and improve product yield. In the pharmaceutical field, a clean environment can prevent drugs from being contaminated by microorganisms and impurities, ensuring the safety and effectiveness of drugs.
2. Core Elements of Clean Workshop Engineering
(1) Air Purification System
This is the soul of the clean workshop. It mainly includes air filters, fans, air - handling units and other equipment. When air enters the workshop from the outside, it first passes through a primary - efficiency filter to remove larger particles of dust and impurities. Then, it is further purified by a medium - efficiency filter. For areas with extremely high cleanliness requirements, such as class 100 or even class 10 clean workshops, high - efficiency particulate air (HEPA) filters or ultra - low penetration air (ULPA) filters are the key, as they can filter out particles with extremely small particle sizes, even down to 0.1 - 0.3 micrometers.
The fan provides power for the entire air circulation to ensure the stable flow of air in the workshop. The air - handling unit is responsible for adjusting the temperature, humidity and other parameters of the air to meet the environmental requirements of the production process. The rational design of air flow direction is also crucial. Common air - flow organization forms include unidirectional flow (laminar flow) and non - unidirectional flow (turbulent flow). In a unidirectional - flow clean room, the air flows in parallel streamlines, which can more effectively control the diffusion of particles and is often used in environments with extremely high cleanliness requirements, such as lithography workshops in chip manufacturing.
(2) Enclosure Structure
The enclosure structure is the "shell" of the clean workshop, which must ensure the tightness and stability of the workshop. Generally, color - coated steel plates, stainless - steel plates and other materials are used to construct walls and ceilings. These materials not only have good flatness for easy cleaning and disinfection but also can prevent the infiltration of outside air. The floor usually adopts epoxy self - leveling or PVC flooring materials, which have the characteristics of wear - resistance, corrosion - resistance, anti - static, etc., and can meet the usage requirements of clean workshops. At the same time, the design of doors and windows also needs to meet the requirements of sealing and cleanliness. Generally, air - tight doors and double - layer hollow - glass observation windows are used to reduce air leakage and the entry of particles.
(3) Purification Equipment and Facilities
The clean workshop is also equipped with a series of purification equipment and facilities, such as air showers, pass - through windows, and clean benches. The air shower blows off dust particles on the surface of personnel and goods through high - speed clean air flow, playing a buffer and purification role for entering the clean workshop. The pass - through window is used to transfer items between different cleanliness - level areas to avoid cross - contamination. The clean bench provides a high - cleanliness environment for local operations and is often used in experiments or production processes that are sensitive to particles, such as cell culture and electronic component assembly.
3. Classification and Standards of Clean Workshops
The internationally commonly used standard for clean workshop classification is mainly the ISO 14644 - 1 standard, which divides clean rooms into different levels from class 1 to class 9. The smaller the number, the higher the cleanliness. For example, in a class 1 clean room, there are no more than 10 particles larger than 0.1 micrometer per cubic meter of air, while in a class 9 clean room, the number of particles larger than 0.5 micrometer per cubic meter of air is allowed to be less than 3,520,000.
In China, there are also corresponding national standards that regulate the cleanliness - level requirements of clean workshops in different industries. The electronics industry has extremely high requirements for cleanliness. For example, chip manufacturing may require clean workshops of class 1 - 10. In the pharmaceutical industry, the aseptic preparation production workshop generally requires to reach different grades such as grade A (equivalent to ISO 5) and grade B (equivalent to ISO 7) to ensure drug quality and safety.
4. Design and Construction Process of Clean Workshop Engineering
(1) Preliminary Planning and Requirement Analysis
First, fully communicate with the customer to understand the requirements of the production process for the clean workshop, including the cleanliness level, temperature, humidity, air pressure, personnel and material flow paths, etc. At the same time, factors such as the area of the workshop, spatial layout, and future expandability should also be considered. Based on this information, the design team conducts preliminary scheme design.
(2) Detailed Design
After the preliminary scheme is determined, detailed engineering design is carried out. This includes the design of the air purification system to determine the types, numbers, and installation positions of filters; the design of the enclosure structure, drawing detailed construction drawings of walls, ceilings, and floors; the selection and layout of purification equipment, as well as the design of supporting facilities such as water, electricity, and lighting. During the design process, various norms and standards should be fully considered to ensure the feasibility and compliance of the design scheme.
(3) Construction and Installation
The construction stage is the process of turning the design scheme into reality. First, the enclosure structure is built to ensure the flatness and tightness of the walls, ceilings, and floors. Then, the air purification system is installed, including pipeline laying, filter installation, debugging of fans and air - handling units. During the construction process, the construction quality should be strictly controlled, and construction norms should be followed. For example, pipeline welding should ensure no leakage, and the installation of color - coated steel plates should be seamless. At the same time, attention should be paid to cleanliness during the construction process to avoid dust and impurities from entering the workshop.
(4) Commissioning and Testing
After the construction is completed, system commissioning is carried out. Start the air purification system, adjust parameters such as fan speed and air flow, check the filtering effect of air filters, and ensure that parameters such as air cleanliness, temperature, humidity, and pressure in the workshop meet the design requirements. During the commissioning process, professional testing instruments such as particle counters, anemometers, and thermo - hygrometers should be used. Only after all parameters pass the test can the clean workshop be delivered for use.
5. Maintenance and Management of Clean Workshops
After the clean workshop is completed, maintenance and management are the keys to maintaining its long - term stable operation. Regular replacement of air filters is essential. According to the service life of the filters and the usage situation of the workshop, primary - efficiency, medium - efficiency, and high - efficiency filters should be replaced in a timely manner to ensure the air purification effect. Regularly inspect the enclosure structure and repair possible problems such as poor sealing and damaged plates. At the same time, maintenance should also be carried out on purification equipment and facilities, such as checking the operation of the fan in the air shower and cleaning the inside of the pass - through window.
Personnel management is also crucial in the maintenance of clean workshops. Personnel entering the clean workshop should receive strict training to understand the operation specifications and hygiene requirements of the clean workshop. Wear protective clothing, hats, masks, shoe covers and other protective equipment that meet the cleanliness requirements to avoid bringing external dust and microorganisms into the workshop. In addition, strict systems should be formulated for cleaning and disinfection work in the workshop, and the workshop should be comprehensively cleaned and disinfected regularly to ensure that the production environment is always in a clean state.
Guangzhou Kunling Purification Equipment Co., Ltd. has rich experience and a professional technical team in the field of clean workshop engineering. We are committed to providing customers with one - stop services from design, construction to maintenance, creating high - quality clean workshops that meet customer requirements, and helping various industries produce higher - quality and safer products. If you have any questions or needs regarding clean workshop engineering, please feel free to contact us.
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