How to choose EFU motor and fan? How should the two match?
When the EFU is running, the motor and fan are the core components that provide aerodynamic power.
When choosing EFU, many customers only focus on:
Air volume
But in fact, whether an EFU can achieve the target air volume depends on:
Wind pressure, filter resistance, motor, fan and control method
related.
Therefore, the EFU motor and fan cannot simply 'find a motor that can rotate and match it with a fan'.
A more reasonable way is:
According to the actual working point of the EFU, the motor, fan, filter and control system are matched as a whole.
3. What do the motor and fan in the EFU do respectively?
It can be easily understood:
motor
Responsible for providing:
Rotating power.
fan
Responsible for:
Mechanical energy is converted into aerodynamic force.
Only after the two work together can the air be pushed through the filter and into the interior of the device.
The basic relationship can be understood as:
Motor → drives the fan → generates airflow → passes through the filter → outputs clean air
4. Why does EFU usually need a centrifugal fan?
The internal space of the EFU is usually limited, and it also needs to overcome:
HEPA/ULPA filter resistance
as well as:
Internal structure and airflow channel resistance.
Centrifugal fans can provide corresponding:
Air volume and pressure.
Therefore, centrifugal fans are more common in some EFU applications.
But which fan is ultimately used still needs to be based on:
Air volume, wind pressure, size, noise and installation space
Sure.
5. What are the two most important parameters for EFU fan selection?
Usually the first thing to focus on is:
Air volume
That is:
How much air needs to be delivered.
wind pressure
That is:
How much system resistance does the fan need to overcome?
For example:
EFU demand ↓ Target air volume + system resistance ↓ Target air pressure ↓ Determine the fan operating point
If there is only air volume but no wind pressure, it is often impossible to accurately judge whether the fan is suitable.
6. Why does the filter affect the fan selection?
Because when air passes through a HEPA or ULPA filter, it creates resistance.
therefore:
Filter resistance increases
↓
The system requires more air pressure
↓
Fan operating point changes
↓
Actual air volume changes
Therefore, when EFU selects a fan, it cannot be considered separately from the filter.
7. How to choose EFU motor?
The motor needs to match the fan operating point.
Usually it is necessary to consider comprehensively:
power
Speed
Voltage
current
Operation mode
as well as:
Installation space.
If the internal height of the device is limited, the size of the motor itself may also become a design limitation.
Therefore, ultra-thin EFU requires special attention to the size and installation method of the motor.
8. Can EFU use EC motors?
Can.
EC motors can be combined with electronic control to achieve speed regulation.
When needed:
Air volume adjustment
Wind speed adjustment
or:
Device linkage
In EFU applications, EC motors can provide corresponding control methods.
The actual choice still needs to be based on:
Target air volume, air pressure, operating time, control requirements and cost
Make comprehensive judgments.
9. Why does the EFU motor need speed regulation?
The operating status of different devices may be different.
For example equipment:
normal production
and:
Standby state
The required air supply may not be exactly the same.
If the EFU has speed adjustment capability, the operating status can be adjusted according to actual needs.
For example:
High demand → increase air volume
Normal operation → maintain target air volume
Low demand → reduce operating speed
Specific control logic can be designed according to equipment requirements.
10. Are bigger fans and motors better?
no.
If the motor and fan are selected too large, it may lead to:
Increased energy consumption
increased noise
Air velocity too high
Unreasonable scope of control
etc. questions.
If the selection is too small, it may:
Insufficient air volume
Insufficient wind pressure
Filter and system resistance cannot be overcome.
Therefore it is more reasonable to:
Select the appropriate motor and fan according to the actual working point.
11. How should EFU motors and fans be matched?
You can follow the steps below.
Step 1: Determine the target air volume
For example, equipment requires a certain amount of air supply.
Step 2: Determine the filter
Sure:
HEPA
still:
ULPA
And corresponding filter size and resistance.
Step 3: Calculate system resistance
consider:
filter
wind channel
Air inlet and outlet
Equipment internal structure
and other factors.
Step 4: Determine the fan working point
according to:
Air volume + wind pressure
Choose the right fan.
Step 5: Match the motor
Then according to the fan:
Speed, power, operation mode
Choose a matching motor.
Step 6: Match the control system
Finally, determine according to equipment requirements:
speed regulation
Start and stop
communication
Device linkage
and other functions.
12. Why does ultra-thin EFU have higher requirements on motors and fans?
The biggest limitation of ultra-thin EFU is:
Space is limited.
For example, an EFU with a height of about 70mm needs to be arranged in a limited space:
motor
fan
filter
air flow channel
Therefore, the internal structure of ordinary EFU cannot be simply used.
Need from:
Motor size
Fan structure
filter thickness
as well as:
airflow path
Design together.
This is also a clear difference in design between ultra-thin EFU and ordinary EFU.
13. How to choose motors and fans for semiconductor equipment EFU?
Semiconductor equipment usually pays more attention to:
wind speed
Wind speed uniformity
cleanliness
noise
as well as:
The internal space of the device.
Therefore, motors and fans need to meet the target air volume and pressure while trying to adapt to the equipment structure.
For space-constrained devices, ultra-thin construction also needs to be considered.
14. How to choose the motor and fan of EFU for lithium battery equipment?
Lithium battery equipment may pay more attention to:
target wind speed
Air volume
Continuous operation
as well as:
device space.
Therefore, the target operating point needs to be determined based on the specific equipment process.
You cannot simply apply a standard fan parameter directly.
15. What kind of fans are needed for photovoltaic equipment EFU?
Photovoltaic equipment EFU usually needs to be based on:
device space
Cleanliness requirements
Target air volume
target wind speed
as well as:
filter resistance
Determine the fan.
If the equipment space is limited, compact or ultra-thin structures can also be considered.
16. Why does Aili Industrial make motors and fans together?
If EFU motors and fans are purchased separately, you will sometimes face:
Parameter matching
size match
Control matching
etc. questions.
Aili Industrial has established its own production system for motors and fans, which can simultaneously consider:
motor
↓
fan
↓
filter
↓
control system
↓
Overall structure
relationship between.
This is useful for:
Ultra-thin EFU
Special air volume EFU
Special wind speed EFU
projects are particularly important.
17. Aili Industrial’s EFU power system
Aili Industrial independently produces:
motor
fan
And combined with self-produced:
filter
Automatic control system software and hardware
as well as:
Sheet metal structure
Perform EFU complete machine matching.
Therefore, for different equipment needs, the design can start from the core power system, rather than just making simple size adjustments to the finished EFU.
For example, the customer stated:
'The internal height of the equipment is limited, but a certain air volume and speed are required.'
You need to consider at the same time:
Motor size
Fan structure
filter
airflow path
Control method
Instead of modifying the shell separately.
18. What needs to be tested for EFU motors and fans?
In EFU product testing, you can pay attention to:
Air volume
wind pressure
Operating current
Operating power
noise
vibration
as well as:
Speed range
and other parameters.
Final confirmation is required:
Whether the actual EFU complete machine performance meets the design requirements.
19. EFU has insufficient air volume. What may be the reason?
If the air volume is lower than expected when the EFU is running, you can check:
filter
Whether the resistance is too high or contaminated.
fan
Whether the design speed is reached.
motor
Whether it is running normally.
control system
Whether to limit the running speed.
wind channel
Is there any abnormal resistance?
Install
Whether the air inlet and outlet are blocked.
therefore:
Insufficient air volume is not necessarily just a problem with the fan.
The entire system needs to be checked.
20. What is the reason for the loud noise during EFU operation?
May be related to:
Fan speed
air flow channel
Motor running status
structural vibration
Installation method
related factors.
Therefore, reducing noise cannot be solved simply by reducing the motor speed.
Need to consider comprehensively:
Fan design + air flow structure + motor + box structure
21. What do you need to provide when choosing EFU motors and fans?
If you need help from the manufacturer for matching, it is recommended to provide:
Target air volume
target wind pressure
target wind speed
filter type
filter size
Installation space
power supply
control requirements
as well as:
Equipment drawings or installation location photos.
The more complete this information is, the easier it will be to determine the appropriate power system.
22. Aili Industrial EFU motor and fan solutions
Aili Industrial's EFU products can match motors, fans, filters and control systems based on the actual needs of the equipment.
Production system covers:
motor
fan
filter
Automatic control system software and hardware
sheet metal
Whole machine assembly
Therefore, for ordinary EFU, it can be configured according to standard parameters.
for:
Ultra-thin EFU
Special air volume
Special wind speed
Special installation dimensions
Device linkage
For other projects, you can further match starting from the core components.
23. Frequently Asked Questions
Why does EFU use centrifugal fans?
Centrifugal fans can provide corresponding air volume and air pressure according to the specific structure, and are suitable for some EFU applications that need to overcome filter and system resistance.
Can EFU use EC motors?
Can. EC motors can be combined with a control system to achieve speed regulation and operating status control.
Do EFU motors and fans need to be matched together?
need. The motor needs to match parameters such as the operating point, power and speed of the fan, and the filter resistance and system structure must also be considered.
Is the bigger the EFU fan, the better?
no. Fans need to be selected based on target air volume, wind pressure, installation space and operating requirements.
Is the more powerful the EFU motor, the better?
no. The motor needs to match the working point of the fan. If it is too large or too small, it may affect the operation of the system.
Can ultra-thin EFU use EC motor?
It can be designed according to the specific structure and parameters, and whether it is suitable needs to be determined by combining the motor size, fan, filter and overall height.
Is the EFU air volume insufficient? Is the fan too small?
uncertain. Filter resistance, control system, air duct structure, installation method and motor operating status may affect the actual air volume.
Can Aili Industrial produce EFU motors and fans by itself?
Aili's industrial production system covers motors, fans, filters, automatic control system software and hardware, sheet metal and complete machine assembly, and can be used for core component matching and complete machine manufacturing of EFU products.
