FFU风机滤网机组(Fan-Filter Unit, FFU)是一种结合送风机与高效滤过滤器(HEPA/ULPA)的气流循环与过滤设备，目前大量的使用于各类无尘室中，做为无尘室二次侧循环过滤系统的主要设备，同时也是整个无尘室气流处理的终端设备。

FFU fan filter unit (Fan-Filter Unit FFU) is a combination of fan and high efficiency filter (HEPA/ULPA) of the air circulation and filtration equipment, at present a large number of used in various types of clean room, clean room equipment as the main two side circulating filtration system, is also the clean room air treatment terminal equipment.

FFU风机滤网机组的使用大概始于1980年代，到1990年代几乎新建的无尘室(特别是亚太地区)均属FFU型态，风淋室而且因为大量的使用，也使得技术的发展更趋成熟、先进，近年来导入的直流无刷机种与微环境无尘设计便是明显的例证。

Use the FFU fan filter unit probably began in 1980s to 1990s, almost new clean room (especially in the Asia Pacific region) belong to FFU type, air shower room and because a lot of use, but also makes the development of a more mature and advanced technology, in recent years the introduction of Brushless DC machine and micro environment clean design is obvious illustration.

FFU产品技术基本上是送风机技术的延伸，而由于无尘室对振动及噪音问题相当敏感，因此在扇叶与风道的设计及整体组装质量的要求上比一般送风机高，不过从设计的观点而论，气动效率(aerodynamic efficiency)高的扇叶与风道，加上注重整体组装的质量，即能同时达到振动与噪音的抑制及提升能源效率的目的。提升能源效率并不仅是一个美丽的口号，对于自然资源缺乏及面对激烈国际竞争的我国实具有重大、深远的影响。

FFU technology is basically an extension of fan technology, and because the clean room is quite sensitive to the vibration and noise problems, so in the design and overall assembly quality of fan blades and air requirements than the average fan high, but from the perspective of the design theory, the aerodynamic efficiency (aerodynamic efficiency) high fan leaves and air duct, and pay attention to the quality of the whole assembly, which can also achieve the suppression of vibration and noise and to improve energy efficiency. The promotion of energy efficiency is not only a beautiful slogan, but also has a profound and far-reaching impact on the lack of natural resources and the face of fierce international competition in china.

能源高效使用不但社会整体经济成本降低，同时也能降低对自然环境的冲击，而从终端使用者的角度来看，高能源使用效率可降低生产成本，是面对国际竞争的利器，空气过滤器同时也是技术密集度高的产业永续发展的保障，因此国际上咸认提升能源效率乃无悔措施(policy of no regret)。

The efficient use of energy in the whole society economy not only reduces the cost, but also can reduce the impact on the natural environment, and from the end user's point of view, the use of high energy efficiency can reduce the cost of production is a weapon in the international competition, air filter is also a high degree of technology intensive industry sustainable development safeguard, so the international Xian that is no regrets measures to enhance energy efficiency (policy of no regret).

目前市场上FFU品牌正逐渐增多，我国市场目前则仍以国外产品占大部份，特别是在大型、新建的无尘室部份。FFU既然是送风机技术的延伸，在目前尚未有国际性标准的测试方法下，可暂时引用送风机性能的标准测试方法，以做为国内技术开发与性能比较的工具。

At present, the FFU brand is gradually increasing in the market, but the market in China still accounts for most of the foreign products, especially in the large, newly built clean room parts. Since FFU is an extension of the blower technology, in the current test methods yet international standard, can temporarily reference standard test method of blower performance, as compared with the performance of domestic technology development tools.

不同FFU电功率(power)与电效率(electric efficiency)的比较，就如气动性能的不一致，电效率高低差亦可达2~3倍！图11中电效率乃有效做功(压力与风量的乘积)除以FFU电功率(马达入力)而得，因此差异可能来自气动力设计、马达或两者。FFU电功率因尺寸及使用马达种类而异，大概在100~300瓦之间，而气动性能如果是在图9建议的区间内，应尽量选用电效率大于15%的交流机种或电效率大于20%的直流机种，以节省操作成本。直流无刷机种虽然表现较突出，但交流定频机种只要马达设计好，几乎可达同样的高效率，且定频运转下经济效益可比直流无刷机种高(因初期成本差异所造成)，因此直流无刷机种的真正优势在变频运转(含区域调控)上。

The comparison of different FFU electric power (power) and electric efficiency (electric efficiency), such as the inconsistency of aerodynamic performance, the difference of electric efficiency can also reach 2~3 times! Figure 11 electrical efficiency is efficient work (product of pressure and volume) divided by the FFU power (motor force) and, therefore the difference may come from the aerodynamic design, motor or both. FFU electric power and motor because of the size of species, probably between 100~300 watts, and the aerodynamic performance if the interval in Figure 9 suggest, should try to use AC machine or electric efficiency greater than 20% of the DC electric machine efficiency is more than 15%, in order to save operating costs. Although the performance of Brushless DC machine is more prominent, but the exchange frequency models as long as the motor design, is almost the same efficiency and economic benefits than the under frequency operation of Brushless DC machine (due to high initial cost, so the real advantage of difference) brushless DC machine in frequency operation (including regional control) on.