The architectural layout of clean room 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 principle of the purification air conditioning system, so as to give full play to the role of relevant functions. The designer of purification 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, so that it conforms to the principle of clean room.

First, the plane layout of the clean room

Clean room generally includes clean area, quasi-clean area and auxiliary area three parts.

The layout of the clean room can be in the following ways:

Outer corridor surround type: the outer corridor can have Windows and windowless, concurrently for visiting and placing some equipment, some in the outer corridor set on duty heating. Exterior Windows must be double-sealed.

Inner corridor type: the clean room is located in the periphery, and the corridor is located in the interior. The cleanliness level of this corridor is generally higher, even at the same level as the clean room.

Two ends type: the clean area is set on one side, and the other side is set for quasi-clean and auxiliary rooms.

Core type: in order to save land and shorten pipelines, clean area can be the core, surrounded by all kinds of auxiliary rooms and hidden pipelines. This way avoids the impact of outdoor climate on clean area, reduces cold and heat energy consumption, and is conducive to energy saving.

Two, personal purification route

In order to minimize the pollution caused by human activities in the operation, personnel must change clean clothes and blow, bathe and disinfect before entering the clean area. These measures are called "personal purification" or "human purification".

Air supply should be provided to the room where clean clothes are changed in the human room, and positive pressure should be maintained in other rooms such as the entrance side, and a little positive pressure should be maintained in the toilet and shower, while negative pressure should be maintained in the toilet and shower.

Three, material purification route

All kinds of objects must be purified before being sent to the clean area, referred to as "clean".

The material purification route and the human purification route should be separated. If the material and the personnel can only enter the clean room in the same place, they must also enter the clean room separately, and the material is first processed by rough purification.

For the occasions where the production line is not strong, the intermediate warehouse can be set in the middle of the material route.

If the production line is very strong, the straight-through material route is used, and sometimes purification and transmission facilities need to be set up in the middle of the straight-through route.

In terms of system design, many raw particles will be blown off in the crude purification and fine purification stage of the net room, so the relatively clean area should maintain negative pressure or zero pressure, and if the pollution risk is high, the inlet direction should also maintain negative pressure.

Iv. Pipeline organization

The pipelines of clean room are very complicated, so they are all organized in a hidden way. There are several specific covert organization methods.

1. Technology of sandwich

(1) Technical interlayer at the top. In this kind of interlayer, the cross section of the air supply and return pipes is generally the largest, so it is the first object to be considered in the interlayer. It is generally arranged at the top of the interlayer, and the electrical pipeline is arranged below it. When the bottom plate of the sandwich can bear a certain weight, the filter and exhaust equipment can be set on it.

(2) Room technical mezzanine. Compared with only the top sandwich, this method can reduce the wiring and height of the sandwich, and can save the return air pipeline to return to the upper sandwich required by the technical lining. Power distribution of return air machine power equipment can also be set in the lower compartment, and the upper compartment of a clean room on one floor can be concurrently used as the lower compartment of the upper layer.

1. Technical channel (wall)

The horizontal pipelines in the upper and lower interlayers are generally turned to vertical pipelines, and the hidden space where the vertical pipelines are located is the technical passageway. The technical lining can also place some auxiliary equipment that is not suitable for clean rooms, and even can be used as a general return air pipe or static pressure box, and some can be installed with light tube radiator.

This kind of technology tunnel (wall) because most of the use of light partition, so when the process adjustment, can be easily adjusted.

4. Technology of shaft

If the technical tunnel (wall) often does not cross the floor, then the need to cross the floor with the technical shaft, and often as part of the building structure, with permanent.

Due to the technical shaft connecting the layers, in order to prevent fire, after the installation of the internal pipeline, the material with fire resistance limit not lower than the floor shall be closed between the layers. The maintenance work shall be carried out in layers, and the inspection door must be equipped with a fire door.

Whether technical interlayer, technical tunnel or technical shaft, when directly concurrently with the style path, its inner surface must be treated according to the requirements of the inner surface of the clean room.

5. Location of the machine room

The air conditioning room is best close to the clean room with large air supply, and strive to have the shortest line of air duct. But in order to prevent noise and vibration, it is required to separate the clean room from the machine room. Both aspects should be considered. The separation modes are as follows:

1. Structure separation mode. There are the following:

(1) Settlement joint isolation type. The settlement joint is passed between the clean room and the machine room, and plays a segmentation role.

(2) sandwich wall partition type. If the equipment room is adjacent to the clean room, each has its own partition wall instead of a common partition wall, and there is a gap of a certain width between the two partitions.

(3) Auxiliary compartment isolation type. An auxiliary room is set between the clean room and the machine room to play a buffer role.

2. Dispersion mode. Divided into the following categories:

(1) Decentralization on the roof or suspended ceiling: Now the computer room is often located on the top roof, so that it is far away from the clean room below, but the next layer of the roof is best set as the auxiliary or management room layer, or as a technical sandwich.

(2) underground decentralized: the computer room is located in the basement.

3. Independent construction. Establish a separate machine room outside the clean room building, preferably close to the clean room. Pay attention to vibration isolation and sound insulation in the equipment room. The ground must be waterproof and drained.

Vibration isolation: should be in the fan, motor, water pump and other support, base for anti-vibration treatment, and even if it is necessary to install the equipment on the concrete plate, and then use anti-vibration material to support the plate, the weight of the plate should be 2 to 3 times the total weight of the equipment.

Sound insulation: in addition to the installation of silencers on the system, large machine room can be considered on the wall with a certain sound absorption performance of the material, to install sound insulation door, do not open the door on the wall and clean area.

Six, safe evacuation

Because clean room is a building with strong tightness, its safe evacuation has become a very important and prominent problem, and the setting of purification air conditioning system is also closely related. Generally, the following points should be noted:

1.each production layer fire zone or clean area at least 2 safety exits, only the area is less than 50? When there are less than 5 persons, only one fire exit may be allowed.

2. Human net entrance should not be used as evacuation exit. Because the net route is often circuitous, once the fireworks are confused, it is very difficult to ask people to run outside quickly.

3.the shower room can not be used as a general access channel, because this door is often two interlocking or automatic, once the failure, very affect evacuation, so generally in the shower room bypass door, staff more than 5 people must set the door. Usually when the staff out of the clean room should not go through the shower room and should go through the bypass door.

4. The door of each clean room in the clean area should be opened in the direction of the room with high pressure in consideration of the need to maintain the indoor pressure condition, because the door needs to be pressed by pressure, which is obviously contrary to the requirements of safe evacuation. In order to consider the two aspects of usually clean and emergency evacuation requirements, provisions between the clean area and the unclean area of the door, clean area and outdoor door as a safe evacuation door treatment, its opening direction shall be toward the direction of evacuation, of course, the single safety door is the same.