Cleanroom workshop, clean shed, purification shed
1. The clean shed, also known as the clean work shed (dust-free shed, purification shed, operation workbench, etc.), refers to a small space surrounded by anti-static mesh curtains or plexiglass in the clean room, and HEPA and FFU air supply units are used above. To form a space with a higher level of purification than a clean room, the clean shed can be equipped with air showers, transfer windows and other purification equipment; 2. A clean room refers to the pollution of particles, harmful air, bacteria, etc. in the air within a certain space The room temperature, cleanliness, indoor pressure, air velocity and air distribution, noise, vibration, lighting, and static electricity are eliminated within a certain range of requirements, and a specially designed room is given. That is to say, no matter how the external air conditions change, the room can maintain the original set requirements of cleanliness, temperature, humidity, and pressure. The main function of the clean room is to control the cleanliness, temperature and humidity of the atmosphere that the product is in contact with, so that the product can be produced and manufactured in a good environmental space. We call such a space a clean room; 2. Material comparison 1. The clean shed frame can generally be divided into three types: stainless steel square pass, painted iron square pass and industrial aluminum profile, the top and available stainless steel steel plate, painted cold plastic steel plate, anti-static mesh curtain and acrylic plexiglass, etc. material. The surroundings are generally anti-static mesh curtains or plexiglass, and FFU clean air supply units are used for the air supply department. 2. The clean room generally adopts foam color steel or rock wool board ceiling with vertical walls, independent air-conditioning air supply system, the air is filtered through high-efficiency three-level junior high school, personnel and materials are equipped with air showers and transfer windows for clean filtering. 3. Selection of the purification level of the clean shed: More customers will choose the thousand grade clean shed or the ten thousand grade clean shed, and a small number of customers will choose the hundred or ten thousand grade clean shed. In short, the choice of the clean shed level depends on the customer's need for cleanliness, but because the clean shed is relatively airtight, if the level of the clean shed is relatively low, it will often bring some side effects: insufficient cooling capacity, employees will be in the clean shed. It feels sultry and hot, so you need to pay attention to this in the actual communication process with customers. 4. Cost comparison between clean shed and dust-free workshop: 1. Clean sheds are usually built in clean rooms, so there is no need to consider air showers, transfer windows and air-conditioning air supply systems. Compared with clean rooms, the cost will be greatly reduced. Of course This has a certain relationship with the required materials, size and cleanliness level of the clean shed. The clean shed will be built in a clean room, but some customers do not want to build a separate clean room. The cost of the clean shed is about 40% to 60% of the cost of the clean room, which depends on the customer's choice of clean shed materials and the size of the clean shed. The larger the area that needs to be cleaned, the smaller the cost difference between the clean shed and the clean room. 5. Pros and cons 1. A) The clean shed has fast construction, low cost, convenient disassembly and assembly, and can be reused; B) Since the clean shed is usually about 2 meters high, if a large amount of FFU is used, the internal noise of the clean shed will be loud; C) because Without an independent air-conditioning air supply system, the inside of the clean shed often feels stuffy and hot; D) If the clean shed is not built in a clean room, due to the lack of filtration of the medium-efficiency air filter, the life of the high-efficiency filter relative to the clean room will be shortened. The replacement of the high efficiency filter will increase the cost. 2. A) The clean room construction is slow and the cost is high; B) The clean room is usually about 2600mm in height, and the staff will not feel depressed when working in it.