FFU fan filtration unit

FFU fan filtration unitAlso known as FFU fan filtration unit or FFU purification unit, FFU fan filtration unit is a self powered air supply filtration device, officially known as Fan Filter Unit in English. It is a modular end air supply device with filtering function. The fan filter unit sucks in air from the top and filters it through HEPA. The filtered clean air is evenly sent out at a mesh speed of about 0.45M/s ± 20% on the entire air outlet surface. Fan filter unit (FFU) is an air self-cleaning device that can be installed on indoor ceilings or placed on brackets to achieve a local level of 100.

Overview of FFU Fan Filter Unit：
FFU fan filter unit is a self powered air supply and filtration device, also known as Fan Filter Unit in English. It is a modular end air supply device with filtering function The fan filter unit sucks in air from the top and filters it through HEPA. The filtered clean air is evenly sent out at a mesh speed of about 0.45M/s ± 20% on the entire air outlet surface.

Application of FFU fan filter unit:
FFU fan filter unit can be modularly connected and widely used in the fields of optoelectronics, precision electronics, LCD glass, semiconductors, mobile phones, etc. It is widely used in Class 1000 cleanrooms and Class 100 cleanrooms,Clean shedApplications such as cleanrooms, ultra clean workbenches, clean production lines, modular cleanrooms, and local Class 100 facilities. Quantity allocation of FFU products (including cleanrooms of Class 1000, Class 10000, Class 100000, Class 300000, etc.).

Characteristics of FFU fan filter unit:
Nowadays, most FFU fan filter units are made of imported environmentally friendly aluminum zinc coated plate, which is rust free, corrosion-resistant, lightweight and sturdy. The box adopts a golden ratio point design, and the FFU fan filter unit is beautiful and generous. The ultra-thin body thickness is only 23cm, andHigh Efficiency FilterThe total thickness does not exceed 30cm; the weight is only 24kg, saving space, facilitating construction installation and daily maintenance. The FFU fan filter unit launched by Guangzhou Zijing adopts imported energy-saving fans, which have obvious effects, ultra-low noise, uniform wind pressure diffusion, uniform and stable air velocity on the outlet surface, low power consumption, low operating costs, and a working life of more than 50000 hours.

The FFU fan filter unit control adopts a developed non-contact induction three-level speed regulation, and the circuit is controlled by electrical switches for safe and stable control. Flexible and diversified configuration: In addition to standard models, non-standard products of different specifications can be produced according to customer needs. For example, changes in duct connection flanges, filter screens, and box materials. The humanized design unit is equipped with stainless steel handles, making transportation and installation more convenient and efficient.

FFU fan filtration unit can also be used for clean room end air supply. This product has initialPrimary filterTwo stage filtration device with high-efficiency filter. The fan sucks in air from the top and filters it through primary and high-efficiency filters. The filtered clean air is then sent out through the entire air outlet. There are two installation methods: hanging and floor standing brackets.

FFU specifications, dimensions, and technical parameters:

Precautions for selection and installation of FFU fan filtration unit:
Attention to the selection and installation of FU fan filter unit. The characteristics of this machine are advanced and scientific in structure, adopting a special guide air duct and uniform air system design to reduce eddy currents, eliminate noise, and guide the airflow evenly through the filter screen. It has the characteristics of uniform wind speed and low noise.
FFU fan filter unit host configuration: The fan is imported from Germany with original fan motors, which have stable performance, long service life, maintenance free, and ensure high air volume and high static pressure conditions. Manufacturing process: Using electrolytic steel plate as the main material, it is manufactured using sophisticated equipment such as CNC punching machines and data bending, ensuring the quality and accuracy of the product.

FFU uses a self circulating filtering air supply method to efficiently filter, deodorize, and sterilize the clean air in the static pressure chamber and send it into the purification workshop. Based on the amount of air supply, the dust particles in the air in the purification room are controlled within a certain range.

FFU is widely used in the end air outlet system of central air conditioning in Class 100 and Class 1000 cleanrooms in industries such as electronic semiconductors, pharmaceuticals, medical operating rooms, and precision manufacturing. It is also suitable for air supply units in clean workbenches and dust-free workbenches.

The fan filter unit, abbreviated as "FFU", is an efficient filter air outlet with a built-in supply fan (shell less fan). It, together with its dedicated keel system, pressurized fan, cooling coil, fresh air system, and dedicated lighting fixtures, forms the FFU system. That is to say, combining the fan and filter (high-efficiency filter or ultra high efficiency filter) together to form a self powered end purification device. The commonly used high-efficiency filters with fans, air outlets, self-cleaning devices, laminar flow hoods, etc. in clean engineering in the past are all types of FFUs.

Attention should be paid to the following issues when selecting and installing FFU:
1. Noise control
The FFU fan filter unit is generally used in parallel with several or even dozens of fans. When designing, the superposition of FFU noise should be considered to ensure that the noise level (empty state) in the cleanroom should not exceed 60dB for non unidirectional flow cleanrooms, and 65dB for unidirectional and mixed flow cleanrooms, as specified in the "Code for Design of Cleanroom Buildings GB50073-2001". Therefore, when choosing a fan, it is best to choose a high-performance, press out, direct drive radial blade fan, which can reduce overall noise.

2. Selection of fan casing
When choosing the structure of the FFU fan housing, not only should we consider avoiding fan leakage and eliminating damage during transportation and handling, but we should also consider the ability to disinfect with disinfectants and the environment in which the FFU is used. Therefore, it is best to choose stainless steel or aluminum alloy materials for the housing.

3. Selection of keel frame
Due to the fact that the fan filter unit of FFU is directly installed between the ceiling frames, in order to make the filter replacement simple and fast, and to maintain the balance of FFU's fan operation, the probability of installation imbalance is reduced. Therefore, professional matching keel frames are generally considered. This type of keel frame is made of steel that is mechanically cold-rolled into a special geometric shape (U-shaped). The metal surface is treated with anti-corrosion measures (such as electrostatic spraying, hot-dip galvanizing, epoxy, etc.) according to its environment, which can ensure the strength of similar channel steel and meet the requirements of FFU operation.

4. Selection of control mode
At present, FFUs generally use single-phase multi speed AC motors, three-phase multi speed AC motors, and DC motors. The power supply voltage of the motor is roughly divided into four types: 110V, 220V, 270V, and 380V.

The control methods mainly include the following:
(1) Multi speed switch control system: This system only includes one speed control switch and one power switch that come with the FFU. Due to the fact that the control components are built-in to the FFU and distributed in various positions within the cleanroom ceiling, staff must adjust the FFU on site through a toggle switch, which is extremely inconvenient to control. Moreover, the adjustable range of FFU wind speed is limited to a few levels. The advantages of using a multi-stage switch control method are simple control and low cost. But there are many shortcomings, such as high energy consumption, inability to smoothly adjust speed, lack of feedback signals, and inability to achieve flexible group control.

(2) Continuous speed regulation control: Compared with the multi speed switch control mode, this system has an additional continuous speed regulator for continuous speed regulation control, which allows the FFU fan speed to be continuously adjustable. However, it also sacrifices motor efficiency, making its energy consumption higher than the multi speed switch control mode.

(3) Computer control: Compared with the previous two methods, this system has advanced functions in computer control: not only can it adopt a distributed control method, which can easily achieve centralized monitoring and control of FFUs, but it can also easily achieve single, multiple, and partition control of FFUs. In addition, a reserved communication interface can be set up for the control system to communicate with the upper computer or network, thereby achieving remote communication and management functions.

(4) Remote control: As a supplement to computer control, this system's remote control method can be used to control each FFU using a remote control, complementing the computer control method. These control methods should be selected based on the actual situation.

{5}FFU Maintenance and Management
When using FFU air supply method, it is often not a single device but dozens or hundreds of FFUs arranged on the ceiling, which brings certain difficulties to maintenance and management. Generally, high-efficiency filters are replaced from the clean room, while most fans need to be maintained at the top of the keel frame (inside the static pressure box). However, if the static pressure box does not have enough height to maintain the fan from the inside, then the feasibility of maintaining the fan from the inside of the clean room should be considered. In short, when applying FFU, consideration should be given to the actual situation to achieve the goal of retaining its characteristics while reducing costs.

The air purification products and equipment provided by Guangzhou Zijing includeAir showerCargo shower room, primary filter, medium filter, high-efficiency filter, ultra clean worktable, clean worktable, transfer window, air shower room accessories, air shower room controller, chemical filter, FFU fan filtration unit, air purifier, clean shed, fresh air cabinet, filter cabinet, ventilation cabinet, washbasin, clean sampling vehicle, high-efficiency air outlet and other cleanroom and supporting purification products. Cleanroom purification equipment is widely used in electronics, semiconductors, biopharmaceuticals, food processing, nuclear industry, automotive manufacturing, air conditioning and heating industries and fields.

Zijing specializes in purification equipment and purification engineeringCleanroom contractor, cleanroom engineering, cleanroom construction, cleanroom cleanliness testing, cleanroom solutions, cleanroom standards, cleanroom construction, cleanroom equipment, cleanroom design, cleanroom construction, cleanroom maintenance. Cleanroom is also known as purification workshop or cleanroom cleanroom.

Requirements for after-sales service time of purification equipment:
Whether it is paid after-sales service or free after-sales service, customers provide feedback on equipment after-sales issues to Zijing. After our company provides a solution and the customer confirms the solution:
1. Arrive at the site within 24 hours within the Pearl River Delta and Yangtze River Delta to solve after-sales service problems;
2. In other areas, it is generally within 48 hours to arrive on-site to solve after-sales service problems, while in special remote areas, it is up to 96 hours to arrive on-site to solve after-sales service problems.
Original source: Guangzhou Zijing http://www.gzfenglinfang.com/ Li Gong (139-2875-8616)