Clean room decoration design layout is closely related to the purification air-conditioning system. The purification air-conditioning system should not only obey the overall layout of the building, but also conform to the principles of the purification air-conditioning system in order to give full play to the relevant functions. The designer of purified air conditioning should not only understand the layout of the building to consider the layout of the system, but also put forward requirements for the layout of the building to make it conform to the principle of clean room.
I. Plane layout of clean rooms
Clean room generally includes three parts: clean area, quasi-clean area and auxiliary area.
The layout of the clean room can be in the following ways:
Outer corridor surround type: Outer corridor can have windows and no windows, both for visiting and placing some equipment, some of them have on-duty heating in the outer corridor. The outer window must be double-sealed.
Inner corridor type: clean rooms are located in the periphery, while corridors are located in the interior. The cleanliness level of such corridors is generally higher, even the same level as clean rooms.
Two-end type: Clean area is set on one side, and quasi-clean and auxiliary rooms are set on the other side.
Core type: In order to save land and shorten pipelines, clean area can be the core, which is surrounded by various auxiliary rooms and concealed pipes. This way avoids the impact of outdoor climate on clean area, reduces the energy consumption of cold and heat, and is conducive to energy saving.
II. Personal Purification Route
In order to minimize the pollution caused by human activities in operation, people must change their clean clothes and blow, bathe and disinfect before entering the clean area. These measures are called "personal purification" for short "human purity". The room in which clean clothes are replaced should be provided with air supply, positive pressure should be maintained on the entrance side of other rooms, a little positive pressure should be maintained on toilets and showers, and negative pressure should be maintained on toilets and showers. Relevant Reading: Improve Clean Room Design and Standards to Meet Laboratory Requirements
3. Material Purification Route
All kinds of objects must be purified before they are sent into the clean area, referred to as "material purification". Material purification route and human purification route should be separated. If material and personnel can only enter the clean room in the same place, they must also enter separately. Material is first treated by rough purification. When the production line is not strong, the intermediate storehouse can be set in the middle of the material line. If the production line is very strong, the direct material route is adopted. Sometimes, there are many purification and transmission facilities in the middle of the direct material route. In the system design, the coarse and fine purification stage of the material cleaning room will blow off many raw particles, so the relative clean area should maintain negative pressure or zero pressure, and if the pollution risk is high, it should also maintain negative pressure on the direction of the entrance.
IV. Pipeline Organization
The pipeline of clean room decoration design is very complex, so concealed organization is used for these pipelines. There are several specific ways of covert organization.
1. Technical interlayer
(1) Top technical interlayer. In this kind of sandwich, the section of air supply and return pipe is the largest, so it is the first object to be considered in the sandwich. Generally, it is arranged at the top of the sandwich layer, and electrical pipelines are arranged below it. When the bottom plate of this sandwich can bear a certain weight, filters and exhaust equipment can be installed on it.
(2) Interlayer of room technology. Compared with the top sandwich, this method can reduce the wiring and height of the sandwich and save the technical sandwich needed for the return air pipeline to return to the upper sandwich. In the lower chute, the power distribution of the power equipment of the return fan can also be set up, and the upper chute of a clean room can be used as both the upper and the lower chutes.
1. Technical Gateway (Wall)
Horizontal pipelines in the upper and lower interlayers usually turn to vertical pipelines, which are the concealed space of the vertical pipelines, i.e. technical jackets. Technical chute can also be placed in some auxiliary equipment that is not suitable for clean rooms, or even as a general return air pipe or static pressure box, and some can be installed with light tube radiator. Because most of these technologies use light partition, they can be adjusted conveniently when the process is adjusted.
2. Technical Shaft
If the technical jacket (wall) often does not cross the floor, the technical shaft will be used when it needs to cross the floor, and it will be permanent as part of the building structure. Because the technical shaft links up all the layers, in order to prevent fire, after the installation of internal pipelines, the fire resistance limit between the layers should not be lower than that of the floor, and the overhaul work should be carried out in different layers, and the overhaul door must be equipped with fire doors. Whether it is a technical interlayer, a technical chute or a technical shaft, when it is directly used as an air duct, its inner surface must be treated according to the requirements of the inner surface of the clean room.