Number of views: 6530 Author: Editor of this site Release time: 2026-08-13 Source: This site
EFU is usually installed inside the device or on the device side.
Compared with ordinary clean room FFU, EFU installation requires more than just:
'Can it be installed?'
Also consider:
where does air enter
Where does the air come from?
How to maintain filters
How motors and fans operate
Is the installation structure reliable?
as well as:
Is it easy to replace the filter later?
Therefore, the EFU installation location is best determined during the equipment design stage.
The installation location of the EFU mainly depends on the area where the equipment requires clean air.
For example:
top of device
Device side
Rear of device
Local area inside the device
All may become EFU installation locations.
Ultimately it needs to be based on:
Target air supply area
as well as:
Equipment internal structure
Sure.
You can first determine a question:
Where is the clean air filtered by EFU ultimately sent?
For example, a certain process area of the equipment requires clean air:
EFU ↓ Filtration ↓ Clean air ↓ Target process area
The position of the EFU should be determined around this air supply target.
Instead of simply:
'Put it in wherever there is space.'
The basic air path of the EFU is:
Intake the wind
↓
fan
↓
filter
↓
Clean air output
So when installing you need to make sure:
The air supply in the air inlet area is normal
at the same time:
The air outlet direction meets the equipment process requirements.
If the air inlet is blocked by the equipment structure, system resistance may increase.
If there is obvious obstruction in the air outlet area, it may also affect the actual air flow.
need.
Although the EFU is installed inside the device, it cannot be exactly as follows:
'Just stuff it in'
to design.
At a minimum, you need to consider:
air inlet space
Ventilation space
as well as:
Filter replacement space
and:
Maintain space.
In particular, filters require regular inspection or replacement, so post-maintenance must be considered in advance.
Ultra-thin EFU is typically used for:
height restricted
equipment.
For example, there is only a limited installation height inside the equipment.
At this time, it is important to confirm:
EFU actual height
Installation and fixation method
Filter disassembly and assembly space
Motor and fan locations
as well as:
Inlet and outlet wind directions.
You can’t just confirm:
'Can the thickness of EFU be put in?'
Also confirm whether it can be maintained normally after installation.
This is an issue that is easily overlooked in device design.
For example:
Top of the device──────────── EFU [Filter]──────────── Inside the device
If the EFU can be installed normally, but the filter is blocked by other structures:
EFU can be used
but:
The filter cannot be removed.
Maintenance will be more troublesome in the end.
Therefore, when designing the installation structure, you should determine in advance:
Which direction does the filter need to be removed from?
Whether it can be installed horizontally needs to be determined based on the specific product structure and internal motor and fan design.
Different EFU structure pairs:
Installation direction
gravity direction
Fan structure
as well as:
Filter fixation method
Different requirements may apply.
Therefore, it cannot be simply assumed that all EFUs can be installed in any direction.
It also needs to be determined according to the specific product design.
If the equipment requires EFU to be installed vertically, it needs to be confirmed during the design stage:
Motor
fan
filter
as well as:
fixed structure
Is it suitable for this installation direction?
need.
During EFU operation:
Fan rotates at high speed
Some vibration may occur.
If the fixed structure is unreliable, it may cause:
vibration
noise
even:
The structure is loose.
Therefore, it is necessary to set up a reliable fixing method according to the product structure during installation.
Can.
For device-side EFU, this is a relatively common customization content.
For example, it can be adjusted according to the device structure:
Installation hole position
Fixed method
flange
support structure
as well as:
Interface location.
This is also a difference between EFU and ordinary standard FFU applications.
meeting.
If after EFU installation:
The air inlet is blocked
or:
Increased air outlet resistance
All may affect the working status of the system.
Therefore, you need to consider when installing:
air inlet space
and:
Air outlet channel.
meeting.
Because the EFU ultimately needs to deliver air to a designated area.
If there is a gap between the air outlet direction and the target area:
too far away
structural obstruction
airflow deflection
etc. may affect the actual wind speed in the target area.
Therefore, airflow design needs to be carried out based on the internal space of the equipment.
Because there may be differences between the theoretical design and the actual installation environment.
After the installation is complete, it is recommended to confirm:
Air volume
wind speed
noise
Running status
as well as:
Cleansing effect.
Especially when the internal structure of the equipment is complex, changes in the installation position may affect the actual air flow.
Semiconductor equipment typically requires consideration of:
cleanliness
Wind speed uniformity
Installation space
vibration
as well as:
Device linkage.
Therefore, the EFU location needs to be determined based on the specific process area.
If the equipment is height-restricted, you also need to consider:
Ultra-thin EFU structure.
You can focus on considering:
Installation location
Air supply area
Equipment internal space
Air volume
as well as:
filtering requirements.
If the equipment has a special structure, the EFU structure can also be customized according to the equipment installation space.
EFU applications in lithium battery equipment may pay more attention to:
Air volume
wind speed
Air supply area
as well as:
The internal space of the device.
Therefore, when installing, you cannot only consider whether the device can be installed, but also need to confirm:
Whether the actual air can effectively reach the target area.
The internal space of electronic equipment such as placement machines is usually compact.
Therefore, important considerations need to be made:
Installation height
fixed position
Inlet and outlet wind directions
as well as:
Filter maintenance space.
If the standard EFU cannot meet the internal structure of the device, customized products can be considered.
EFU installation design usually needs to start from the product structure.
Aili industrial production system covers:
Motor
fan
filter
Automatic control system software and hardware
sheet metal
as well as:
Complete machine assembly.
Therefore, according to the actual installation space of the equipment, the following can be determined:
EFU size
Installation structure
Inlet and outlet wind directions
Filter maintenance methods
as well as:
control interface
Make a match.
Can.
If the customer provides:
Equipment installation location
Installation dimensions
Fixed hole position
Inlet and outlet wind directions
as well as:
Equipment structure drawings
Structural design can be carried out according to specific projects.
For space-constrained devices, further considerations can include:
Ultra-thin structure
and:
Special installation method.
If you need help from the manufacturer to determine the installation plan, it is recommended to provide:
For example:
Length×width×height
Can help determine the actual space.
If there are three-dimensional models such as STEP, it will be more convenient for structural matching.
Figure out where the clean air needs to go.
If a target value already exists, it can be provided directly.
For example:
HEPA/ULPA
For example:
Independent control/device linkage/communication
Before installing, make sure:
Where to install it?
↓
Where does the air come in?
↓
Where is the clean air sent?
↓
How to maintain the filter?
↓
How to fix EFU?
↓
How to control the device?
If these six issues are identified in advance, subsequent installation and use will usually be smoother.
Aili Industry can provide EFU solution matching based on the actual structure of the equipment.
from:
Product size
arrive:
Installation structure
Then to:
Motors, fans, filters and control systems
Think holistically.
for:
Semiconductor equipment
Photovoltaic equipment
Lithium battery equipment
Panel display device
SMT machines and electronic equipment
For equipment-side applications, EFU product design can be carried out according to the specific installation space and operation requirements.
EFU is mainly installed inside or at the equipment end. The specific location needs to be determined based on the target air supply area and the internal structure of the equipment.
need. In addition to the size of the product itself, you also need to consider the space for air inlet, air outlet, filter replacement and subsequent maintenance.
It needs to be determined according to the specific product structure. The installation direction requirements of different EFUs may be different.
It needs to be confirmed based on the motor, fan, filter and fixed structure. It cannot be assumed that all products can be installed in any direction.
meeting. If the air inlet or outlet area is blocked, it may increase system resistance and affect the actual operating status.
need. When designing equipment, the disassembly and installation direction of the filter and the maintenance space should be determined in advance.
Can. The structure can be matched according to the equipment size, installation hole position, fixing method and air inlet and outlet direction.
The EFU solution can be matched according to the equipment size, installation location, drawings and technical parameters provided by the customer.