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Advantages And Disadvantages Of Clean Work Shed

Jul 24, 2020

The main materials of the clean shed, most customers will build the clean shed in the clean room, but some customers do not want to build a separate dust-free workshop, in the clean shed does not consider the air conditioning system, air shower, transfer window and other purification equipment Under the circumstances, 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.


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  A. The brackets around the clean shed are made of industrial aluminum or stainless steel square pass or iron square pass multi-layer pickling electrostatic spray as the frame, anti-corrosion, anti-rust, beautiful and generous. Commonly used plates for clean sheds are cold-rolled steel plates (A3 plates) and stainless steel plates (SUS201, SUS304, SUS316, etc.), and the thickness is generally 0.8~1.5mm. Different materials and size configurations directly affect the price and cost of clean sheds.


   B, the clean shed can be composed of vertical curtains or glass. Different materials will lead to different prices and costs of the clean shed.


C. Principle of clean shed: The FFU fan filter unit sucks fresh air through the primary filter for the first filtration, and then passes through the second 99.99@0.3um filtration of the high-efficiency filter. The entire air outlet surface is 0.45m/s± 20% of the wind speed is sent to the clean shed at a uniform speed, so that the clean air flow is vertical and unidirectional, so as to ensure the clean shed, clean bench and other purification equipment required in the work area, all using the most advanced international numerical control production line Compared with the traditional manual production process, the numerical control assembly line can be more accurately positioned with an accuracy of ±0.01mm, effectively ensuring the sealing performance of all accessories of various purification equipment such as clean sheds.


  1. What is a clean shed (clean work shed)


Clean work shed, also known as dust-free clean shed, clean clean shed, class 100 clean shed, class 1,000 clean shed, and class 10,000 clean shed, which are enclosed in a turbulent clean room space with anti-static transparent plastic cloth Small space, using independent HEPA or ULPA and air-conditioning blower unit to become a higher level of clean space, the level is 100~10000, the height of the internal space is about 2.0 meters, the coverage area is less than 50m2, four pillars can be installed The movable wheel can be used flexibly.


  2. Clean shed materials:


   There are generally three types of clean shed frames: stainless steel square pass, iron square pass, and aluminum profile.


   There are generally three types of materials for the top of the clean shed: stainless steel plate, cold-rolled steel plate sprayed, anti-static grid curtain, (anti-static) acrylic plate.


   Clean air supply part, generally choose FFU laminar flow hood (FFU laminar air supply unit)


The enclosure materials of    clean shed generally include: anti-static curtain, (anti-static) acrylic sheet.


  3. The choice of clean shed purification level:


   More customers will choose a thousand-grade clean shed, or a ten thousand grade clean shed, and a small number of customers will choose a 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 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:


Generally speaking, most customers will build a clean shed in a clean room, but some customers do not want to build a separate clean room. When the clean shed does not consider the air conditioning system, air shower room, transfer window and other purification equipment, The cost of a clean shed is about 40% to 60% of the cost of a clean room, depending 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. Advantages of clean shed:


  A. Fast construction speed and easy installation


  B. Low cost and easy maintenance


  C. Easy to control, each FFU has its own fan;


   Disadvantages of clean shed:


  A. Due to the extensive use of FFU fan filter units, the noise of the clean shed may be relatively loud;


  B. FFU has its own fan, with many fans and high maintenance frequency;


  C. Due to the air supply in the space, the clean shed often feels stuffy and hot;


  D. If the clean shed is not built in a dust-free workshop, due to the lack of medium-efficiency filter protection, the service life of the high-efficiency filter will be shortened compared with the dust-free workshop, and the long-term use cost will be higher.