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FFU fan filter unit selection and installation considerations.

source:本站    Release time:2018-7-13 15:34:39    Clicks:

FFU fan filter unit attention selection and installation of the machine:

Main engine configuration: the original fan motor imported from Germany is provided with stable performance, long service life and no maintenance, so as to ensure high air volume and high static pressure.

Manufacturing process: electrolytic steel plate as the main material, using CNC punch press and data bending and other sophisticated equipment manufacturing to ensure the quality and precision of products.


FFU fan filter unit attention selection and installation of the machine

Main engine configuration: the original fan motor imported from Germany is provided with stable performance, long service life and no maintenance, so as to ensure high air volume and high static pressure.

Manufacturing process: electrolytic steel plate as the main material, using CNC punch press and data bending and other sophisticated equipment manufacturing to ensure the quality and precision of products.

FFU is a built-in blower fan (without shell) of high efficiency filter air supply outlet,which is consist of the special keel system, pressure fan, cooling fan coil units, air system and special lamps . In other words, the fan and the filter (high efficiency filter or ultra-high efficiency filter) are combined to forma cleaning equipment that can provide power by itself. In the past, the air supply outlet, self-purifier and laminar flow hood with high efficiency filterandfan were alla part of FFU. The following issues should be noted in selecting and installing FFU.

Noise control.

Generally, several fans or even dozens of fans are used in parallel. When designing ,the superposition of noise should be considered,which requires the noise in non-unidirectional flow clean rooms should not exceed 60dB, andthe noise inunidirectional flow and mixed flow clean rooms should not exceed 65dB. Therefore, when selecting a fan, it is better to select a high-performance, pressure-out, direct-drive radial vane fan, which can also reduce the overall noise.

2. Fancase.

There are many issues to be considered when choosing the structure offan case. Since more products are used, it is necessary to sterilize them. Therefore, it is necessary to consider thatwhether it willcause adverse chemical reactions whendisinfectantare used to disinfect the casing of the machine. Secondly, it is necessary to eliminates the damage caused during transportation and handling; the last is the use of the environment, which is an important part of the life of the fancase. Therefore, it is best to use stainless steel or aluminum alloy materialto maketheouter case.

2. Fancase.

There are many issues to be considered when choosing the structure offan case. Since more products are used, it is necessary to sterilize them. Therefore, it is necessary to consider thatwhether it willcause adverse chemical reactions whendisinfectantare used to disinfect the casing of the machine. Secondly, it is necessary to eliminates the damage caused during transportation and handling; the last is the use of the environment, which is an important part of the life of the fancase. Therefore, it is best to use stainless steel or aluminum alloy materialto maketheouter case.

Selection of control methods

At present, most FFUsadapt DC motors, three-way multi-speed AC motors and unidirectional multi-speed AC motors, and their supply voltages are roughly four types of 110V, 220V, 270V, and 380V.The control method is mainly divided into several types:

1. Remote control.

The system, as a complement to the computer control method, can use a remote controller to control each fan unit, complementing computer control.

2. Multi-step switch control.

Install a speed control switch and a power switch to control the FFU. Relatively simple structure, stable speed, and low cost.

3. Stepless speed control.

Compared with the multi-step switch control mode, the stepless adjustment control has a continuous speed regulator, which enables the FFU fan speed to be continuously adjustable, but at the same time, it also sacrifices the motor efficiency, making its energy consumption even higher than the multi-step switch control mode.

4. Computer group control.

Easy to control, can adjust speed andachieve more complex applications. Using distributed control, can achieve centralized control and monitoring of the FFU,thecontrol the different systems of FFU partition system  andmonitor a single FFU , and this method also has the effect of energy saving.


FFU Maintenance Management

When adopting the FFU air supply method, it is not a single device, but dozens or hundreds of FFUs are arranged on the ceiling, which brings certain difficulties for maintenance and management. Generally high-efficiency filters are replaced from the clean room, and most of the fans need to be maintained at the top of thekeel framekeel frame (inside the static pressure box), but if the static pressure box does not have a sufficient height to maintain the fan from the inside, then the clean room should be considered about the feasibility of maintaining the wind turbines . In short, in the application of FFU must be considered according to the actual situation, to achieve the purpose of retaining its characteristics and reduce costs.



Service phone:

4000-2288-21

tel:0755-27273691

Fax:0755-27273695

Business line:0755-27258600

Add:Blue Sky science park,Donghuan Road,Shajing,Baoan,Shenzhen,China.

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