1Cleanroom Floor Plan

A cleanroom typically consists of three sections: the clean area, the semi-clean area, and the support area. The layout of a cleanroom can be arranged in several ways:

The veranda features a spiral design, with options for windows and windowless sections, serving both as a viewing area and for placing equipment. Some verandas are equipped with direct-heat heating systems. The exterior windows must be double-sealed.

The interior corridor style: The dust-free workshop is located on the perimeter, while the corridors are situated inside. The cleanliness levels of these corridors are generally quite high, often equal to that of the dust-free workshop.

The two-end design: One side is dedicated to the clean room, while the other side accommodates semi-clean and auxiliary rooms.

Centralized: To save land and shorten pipelines, the dust-free area is surrounded by various auxiliary rooms and concealed pipelines on all sides, creating a method that avoids the influence of outdoor climate on the dust-free zone. This approach reduces energy consumption for heating and cooling, promoting energy conservation.

2Staff Purification Path

To minimize pollution caused by human activity during operations, it is necessary to replace cleanroom attire and perform hand washing, disinfection, and air showering before entering the cleanroom. These measures are known as personnel decontamination.

The rooms replacing the cleanroom suits in the personnel decontamination area should be supplied with air, and positive pressure should be maintained in the entrance side and other rooms. For restrooms and showers, a slight positive pressure should be sustained, while restrooms and showers should maintain negative pressure.

3Material Purification Path

It is necessary to undergo purification treatment, abbreviated as "Item Purification," before various items are sent into the cleanroom.

Material purification pathways should be separated from personnel pathways. If materials and personnel must enter the cleanroom at the same location, it is also necessary to use separate doors, with materials first undergoing rough purification processing.

In situations where the production line is not strong, a central warehouse can be established at the material transportation hub.

If the production line is highly efficient, a direct material flow path is chosen, and sometimes, additional purification and transfer equipment is required at the center of the direct path.

In system planning, due to the shedding of numerous airborne particles during the rough and fine purification stages of the material purification room, relative to the clean room, negative or zero pressure should be maintained. If there is a high risk of contamination, negative pressure should also be enforced in the direction of the entrance.

4Pipeline Organization

The pipeline system in our cleanroom is highly complex, thus we opt for concealed organization methods for all pipelines. The detailed concealed organization methods include the following.

(1) Skill Gap

a. Top skill sandwich layer. This type of sandwich layer is typically the primary consideration due to the larger cross-sections of supply and return air ducts. Generally, it is organized at the upper part of the sandwich, with electrical pipelines arranged below. When the bottom plate of this sandwich can bear a certain weight, filters and exhaust equipment can be installed on top.

b. Room skill interlayer. Compared to the top interlayer, this method reduces the wiring and height of the interlayer, and eliminates the need for a skill corridor for the return air duct to return to the upper interlayer. Power distribution for return fan equipment can also be set within the corridor. The upper interlayer of a dust-free room on one floor can serve as the lower interlayer for the floor above.

Skill Alley (Wall)

Horizontal pipelines within the upper and lower sandwich layers typically need to be turned into vertical pipelines. The shaded spaces at these vertical pipeline locations are known as skill passages. Skill passages can also accommodate auxiliary equipment unsuitable for cleanrooms, and can even serve as general return air ducts or static pressure boxes. Some may be fitted with light tube radiators.

These partition walls are primarily made of lightweight materials, making it convenient to adjust as the process changes.

5Skill Well

If skill corridors often do not cross levels, then when the need for cross-leveling arises, skill shafts are utilized.

Due to the interconnected nature of skill silos, fire prevention measures must be implemented upon the completion of internal pipeline installation. This includes closing the spaces between floors with materials that have a fire resistance rating not less than the floor itself. Inspection work should be conducted in layers, and fire doors are necessary for the inspection doors.

Regardless of the skill sandwich, skill corridor, or skill shaft, when directly serving as a duct, its interior and exterior surfaces must be treated according to the requirements of cleanroom interior and exterior surfaces.

6Data Center Location

The air conditioning room requires a dust-free workshop with a high demand for airflow, aiming for the shortest possible ductwork route. However, to avoid noise and vibration, it is also necessary to isolate the dust-free workshop from the room.

7Safety Dispersed

Due to the high-sealing nature of cleanrooms, safety dispersion becomes a crucial and prominent issue, closely related to the design of the purification air conditioning system. Generally, the following points should be noted:

Each production layer fire zone or clean room must be at least established.Two exit points are required; however, only one exit may be permitted if the area is less than 50 square meters and the number of people is fewer than 5.

(2) Imports should not be scattered for export. Due to the often winding and circuitous roads, it is quite difficult to require personnel to quickly reach the outdoor area once fireworks engulf the area.

(3) The blow-off chamber cannot be used as a general in and out passage. Since such doors are often interlocked or active, any issues can significantly disrupt operations. Therefore, a bypass door is typically installed adjacent to the blow-off chamber, used by staff for more efficient access.Five people necessitate the installation of this door. During regular operations, personnel exiting the dust-free workshop should not pass through the blow-off room but should use the bypass door instead.

(4) In the cleanroom areas, the doors of each cleanroom are designed to open towards the room with higher pressure to maintain the indoor pressure conditions. However, this is contrary to the safety dispersion requirements, as the doors need to be tightly sealed by pressure. To address both the normal cleanroom and emergency dispersion needs, the doors between the cleanroom and non-cleanroom areas, as well as those between the cleanroom and the exterior, are treated as safety dispersion doors. Their opening direction is always towards the dispersion direction, and this applies to the single safety doors as well.