Shenzhen Clean Room Design and Construction Project

NegotiableUpdate on 04/29

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Overview

The main sources of pollution in the cleanroom of the Shenzhen cleanroom project come from the following aspects: 1. Dust in the atmosphere, dust particles and microorganisms brought in by fresh air in the purification air conditioning system; 2、 Dust generated by homework personnel; 3、 Dust production from building envelope structures and facilities

Product Details

The main sources of pollution in the cleanroom of the Shenzhen cleanroom project come from the following aspects:

1. Dust in the atmosphere, dust particles and microorganisms brought in by fresh air in purification air conditioning systems;

2. Dust generated by homework personnel;

3. Dust production from building envelope structures and facilities.

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Purification principle

Airflow → initial purification → air conditioning → medium efficiency purification → fan supply duct → high-efficiency purification outlet → blowing into the room → removing dust and other particles → return air louvers → initial purification Repeat the above process to achieve the purification goal.

To ensure the required air cleanliness in the clean room for product production environment or other purposes, multiple comprehensive technical measures must be adopted.

1. Adopting production processes and equipment that produce minimal pollutants;

2. Take necessary isolation negative pressure measures to prevent the spread of pollutants generated by production processes to the surrounding areas;

3. Reduce the amount of pollutants brought indoors by personnel and materials;

4. Strengthen the management of clean rooms and carry out cleaning and other work according to regulations;

5. People and goods must be separated, and cross flow of people and goods is not allowed.

air flow pattern

The airflow organization in a clean room is significantly different from that of a general airflow organization. Reasonable design of the airflow pattern and distribution in clean rooms is called airflow pattern. The airflow patterns in clean rooms are mainly divided into three categories: unidirectional flow, non unidirectional flow, and mixed flow.

one way flow

It refers to an airflow that follows an equal streamline in one direction and has consistent wind speed across a cross-section. It is divided into horizontal unidirectional flow and vertical unidirectional flow.

The airflow in a unidirectional clean room flows smoothly from the supply side to the corresponding return side. Its main characteristic is to expel dust and pollutants emitted by the pollution source from the room before they diffuse into the room. It is mainly used in high-level situations.

Non unidirectional flow

It is an uneven distribution of airflow, with different speeds and directions in different parts of the clean room, and is a common form of airflow organization used in clean rooms.

The airflow organization form is divided into top supply and side return according to the installation method of high-efficiency filters and return air vents; Side delivery, side return; Top delivery, top return, and other types. Its characteristic is that when pollutants are emitted from the pollution source and spread indoors, clean air treated with high-efficiency filters is used to dilute and dilute the pollutants, thereby maintaining the required indoor air cleanliness level.

mixed flow

It is a combination of non unidirectional flow pattern and unidirectional flow pattern used in the same clean room. Its characteristics are: unidirectional flow pattern is used in areas where high air cleanliness is required, while non unidirectional flow pattern is used in others, which not only meets the requirements of use, but also saves equipment investment and operating costs.