The FFU (Fan Filter Unit) system, also known as the fan filter unit system, has several advantages that make it widely used in environments requiring high cleanliness air. The following are the main advantages of the FFU system:
First, efficient air purification capacity
1. ** Multi-layer filter **
FFU systems are usually equipped with multistage filters, generally including primary filters, medium filters and high efficiency filters (such as HEPA filters). The primary filter is mainly used to intercept larger particles, such as dust, hair, etc., to prevent them from entering the subsequent filter and extend the service life of the subsequent filter. Medium efficiency filter to further filter smaller particles, high efficiency filter can filter out smaller diameter particles, including bacteria, viruses, PM2.5, etc., the particle size of 0.3 micron above the particle filtration efficiency can reach 99.97%, after multistage filtration, can provide a highly clean air environment for the clean room.
For example, in the clean shop of a semiconductor chip manufacturing plant, the multi-layer filtration of the FFU system ensures that tiny impurities in the air are effectively removed, preventing these impurities from adhering to the chip and affecting the performance and quality of the chip.
2. ** High air volume circulation **
- FFU system can provide large air volume, so that the clean room air circulation. By constantly inhaling indoor air and filtering it out, it can quickly dilute the concentration of indoor pollutants and maintain a low level of pollutants in the air.
- Taking biopharmaceutical workshop as an example, due to the production process will produce a large number of microorganisms and particles, the FFU system can be through large air circulation, timely discharge of these pollutants outside, to ensure the cleanliness of the production environment, in line with the strict requirements of drug production.
Second, flexible installation and layout
1. ** Independent installation **
- The FFU system has a modular design so that each FFU unit can be installed and operated independently. This independence allows flexible arrangements to be made during installation according to the actual layout and needs of the clean room, without being restricted by the overall system.
For example, in some old clean room renovation projects, the original air purification system may not be able to meet the new cleanliness requirements, and the FFU system can be upgraded gradually by adding or replacing FFU units one by one, without requiring a large-scale transformation of the entire system.
2. ** Local densification **
- Local densification arrangement of FFU can be easily implemented according to the different requirements of cleanliness in different areas of the clean room. For example, in areas with high cleanliness requirements such as clean working areas and around equipment, the number of FFU can be appropriately increased to improve the supply of clean air in the area, so as to meet the requirements of local high cleanliness.
- In the electronic component assembly workshop, for some precision component assembly areas, a higher level of air cleanliness can be provided to these areas by locally increasing FFU and ensuring product quality.
Third, energy saving and low operating costs
1. ** Low energy motor **
The FFU system uses a relatively low power fan motor, and by optimizing the design and operation of the fan, it can reduce energy consumption while maintaining the air volume and pressure. At the same time, since the fan motor is the main energy consumption component in the FFU system, its low energy consumption characteristics help to reduce the operating costs of the entire system.
- Compared to traditional centralized air conditioning purification systems, FFU systems can reduce energy consumption by around 30% to 50%. For example, in a clean room with an area of 1000 square meters, if the traditional system is used, the annual electricity bill may be about 1 million yuan, and after using the FFU system, the electricity bill can be reduced to 500,000-700,000 yuan.
2. ** Low maintenance cost **
The structure of the FFU system is relatively simple, without complex piping systems and large air handling equipment. Its maintenance work is mainly focused on regularly replacing the filter and checking the operation of the fan, and the maintenance cost is low. And the service life of the filter is relatively long, generally the initial effect filter can be used for 3-6 months, the medium effect filter can be used for 6-12 months, and the high efficiency filter can be used for 24-36 months, reducing the replacement frequency and cost.
In contrast, the traditional centralized air purification system is difficult to maintain and repair due to the complex pipeline and large equipment, and the cost is also higher.
4. Good noise control
1. ** Low noise fan **
- The fans used in the FFU system have been specially designed and selected to have low noise levels. The noise generated by these fans during operation is generally between 40-60 decibels, which will not cause significant interference to the working environment of the clean room.
For example, in laboratories, hospital operating rooms and other places that require a quiet environment, the low noise operation of the FFU system can provide a comfortable working environment, which is conducive to the staff to concentrate on experiments, surgeries and other activities.
2. ** Sound insulation measures **
- In addition to the low noise characteristics of the fan itself, the enclosure and internal structure of the FFU system are soundproofed. For example, a muffler is installed at the outlet and return air inlet of the fan to reduce the spread of airflow noise; Sound-absorbing material is attached to the inner wall of the housing to further reduce the reflection and radiation of noise.
- These sound insulation measures allow the noise generated by the FFU system during operation to be effectively controlled, creating a quiet environment for the clean room.
5. Easy to control and manage
1. ** Centralized control system **
- The FFU system can be managed and monitored through a centralized control system. Managers can monitor the operating status of each FFU unit in real time through the control system, including fan speed, air volume, pressure difference and other parameters. At the same time, the FFU unit can also be operated according to the actual needs of remote start-stop control, speed control and other operations.
- For example, in some large clean buildings, managers can centrally manage the FFU system in each area in the office through the centralized control system, and easily and quickly adjust the air parameters in the clean room.
2. ** Fault alarm function **
- FFU system has fault alarm function. When abnormal situations such as fan failure and filter blockage occur in the system, it can send alarm signals in time to remind maintenance personnel to deal with them. In this way, problems can be found and solved in a timely manner, and the air cleanliness of the clean room can be reduced or production interruption can be avoided due to equipment failure.
For example, when the high efficiency filter is close to its service life, the resistance of the filter will increase, resulting in a decrease in air volume, and the FFU system will send an alarm signal to prompt the maintenance personnel to replace the filter in time to ensure the normal operation of the system.