What is the difference between EFU and FFU? How to choose between device-side EFU and ordinary FFU?

Both EFU and FFU belong to:

Fan filter unit.

Both can be passed:

Fan + motor + filter

Provide filtered air to equipment or clean spaces.

Therefore, many customers will ask when they first contact EFU:

What is the difference between EFU and FFU?

In fact, the biggest difference between the two is not just the name, but:

Application scenarios, installation methods, structural design and customization requirements.

Simply put:

FFU is more used for air supply in spaces such as clean rooms, while EFU is more targeted at the clean air demand inside the equipment.

3. What is the core difference between EFU and FFU?

You can first briefly look at this table:

Things to note here:

EFU and FFU are not completely different product categories, but different product forms based on application scenarios.

4. Where is the EFU mainly installed?

EFU is mainly used for:

Inside the device

or:

Local clean area at the equipment end.

For example:

Semiconductor equipment

SMT machine

Photovoltaic equipment

Lithium battery equipment

Panel display device

wait.

EFU usually needs to cooperate with the structure of the device itself.

Therefore, we will pay more attention to:

Installation height

Installation dimensions

Air volume

wind speed

cleanliness

as well as:

control method.

5. Where is FFU mainly installed?

The more common applications of FFU are:

clean room

Clean factory

Clean work area

wait.

For example, install multiple FFU on the top of the clean room:

FFU FFU FFU ↓ ↓ ↓ ↓ ↓ ↓ Clean air ↓ ↓ ↓ Clean area

Multiple FFUs can work together to form a clean air supply system.

6. Why is it more suitable to use EFU on the device side?

Because the internal space of the equipment is usually limited.

For example, customers may ask:

'Only a very thin fan filter unit can be installed in this position.'

or:

'The internal dimensions of the device are not standard specifications.'

At this time you need to consider:

size

structure

Air volume

wind speed

filter

as well as:

Control method

match between.

EFU is designed for this type of device-side application.

7. Can both EFU and FFU use HEPA?

Can.

Both EFU and FFU can be configured with corresponding filters according to actual cleaning requirements.

For example:

HEPA

as well as:

ULPA

wait.

But please note:

Filter selection cannot be separated from the fan and system design.

Because the filter will produce some resistance.

So you need to consider at the same time:

Filter resistance + fan capacity + target air volume.

8. What is the difference between the air volume of EFU and FFU?

Both need to determine the air volume based on actual demand.

But the way it is determined is different.

FFU

Usually based on:

Clean room area

Ventilation needs

Cleanliness level

as well as:

Number of FFU

Sure.

EFU

Usually more attention is paid to:

Equipment internal space

Air supply area

target wind speed

Equipment process

as well as:

Local cleaning requirements.

Therefore, the air volume of the EFU usually needs to be matched to the specific equipment.

9. Does EFU require more customization than FFU?

In many cases yes.

Because the EFU is installed inside the device, it needs to adapt to the device itself:

structure

space

Installation location

as well as:

Process requirements.

For example you may need:

special length

special width

Ultra-thin height

Special air volume

Special wind speed

as well as:

Equipment linkage control.

Therefore, the need for EFU customization is usually obvious.

10. Can FFU be made into an ultra-thin structure?

Different thicknesses can be achieved according to product design.

However, in EFU applications, ultra-thin requirements are often more prominent.

For example, the internal space of some devices is very limited, and the EFU may need to be controlled at approximately:

70mm

height range.

Products like these need to be reconsidered:

Motor

fan

filter

as well as:

air flow channel

space arrangement.

11. What is the difference between the control methods of EFU and FFU?

FFU can use:

independent control

Centralized control

etc.

In addition to these methods, EFU often requires:

Device linkage

For example:

device starts ↓ EFU starts ↓ reaches target operating state ↓ device runs

Also based on device status:

Adjust EFU running speed

or:

Feedback EFU running status.

12. Can EFU be linked with equipment PLC?

Can be configured according to specific projects.

For example:

PLC

↓

control system

↓

EFU

accomplish:

start up

stop

speed regulation

status feedback

and other functions.

The specific communication methods and interfaces need to be determined based on the customer's existing equipment control system.

13. Should EFU or FFU be chosen for semiconductor equipment?

in the case of:

Local clean air supply inside the equipment

It's usually better to consider EFU.

in the case of:

Air supply for the entire cleanroom space

Then the FFU system is usually considered.

In fact, both can exist simultaneously.

For example:

Clean room uses FFU

↓

EFU is used inside production equipment

This can satisfy respectively:

clean room environment

and:

Local clean environment inside the equipment

needs.

14. Should I choose EFU or FFU for photovoltaic equipment?

If the product is installed on:

Inside photovoltaic equipment

And if air filtration and air supply are needed inside the equipment, EFU can be considered.

in the case of:

Clean area of ​​photovoltaic production workshop

Then FFU can be considered based on the clean room system requirements.

In the end, you still have to look at:

Installation location and practical use.

15. Should I choose EFU or FFU for lithium battery equipment?

in the case of:

Local air supply inside the equipment

EFU can usually be considered.

For example, it is necessary to provide: for a certain process area:

Specific air volume

specific wind speed

or:

clean air

It needs to be designed according to the actual needs of the equipment.

If it is the supply of clean air for the entire production space, equipment such as FFU needs to be considered from the perspective of the overall clean system.

16. Should the placement machine use EFU or FFU?

If EFU needs to be installed on:

Inside the placement machine

And to provide clean air to a certain area inside the equipment, then EFU is more suitable for this application scenario.

Because inside the device usually:

Space is limited

Complex structure

And there may be:

Special installation dimensions

Therefore, equipment matching needs to be considered.

17. Which one is more expensive, EFU or FFU?

It cannot be simply compared.

Price is usually related to:

size

fan

Motor

filter

control system

Material

as well as:

degree of customization

related.

If the specifications of standard FFU are relatively conventional, the product structure will be relatively standardized.

And if EFU involves:

Ultra thin

special size

Special air volume

Special controls

Other requirements, manufacturing and design content may be increased.

Therefore, comparisons should be based on specific plans rather than simply comparing product names.

18. Why does Aili Industrial produce EFU and FFU at the same time?

Although the two products have different application scenarios, their core technologies are closely related.

All need to be resolved:

Motor

fan

filter

airflow

control

as well as:

structure

matching problem.

Aili industrial production system covers:

Motor

fan

filter

Automatic control system software and hardware

sheet metal

as well as:

Complete machine assembly.

Therefore, it can be developed for different applications:

EFU

and:

FFU

Product Plan.

19. How to choose between Aili Industrial EFU and FFU?

You can simply judge according to the application scenario:

If it is a clean room

Prioritize:

FFU system.

If it is inside the device

Prioritize:

EFU.

If space is very limited

You can further consider:

Ultra-thin EFU.

If special air volume is required

Can be done:

Matching of fans and motors.

If device linkage is required

Can be configured:

Automatic control system.

If special filter levels are required

Can be matched upon request:

HEPA or ULPA filter.

20. Can EFU and FFU be used in combination?

Can.

In some large-scale production environments, it can be formed:

clean room ↓ FFU ↓ to provide an overall clean environment ↓ production equipment ↓ EFU ↓ to provide local clean air inside the equipment

This can be solved separately:

Space-level cleanliness

and:

Equipment level cleanliness

requirements at two levels.

21. What should you ask yourself when choosing EFU or FFU?

You can first determine 5 questions:

1. Where is it installed?

Inside the equipment or in a clean room?

2. How much space do you need to deal with?

Local area or entire clean space?

3. Are there special sizes?

Especially the height restrictions.

4. Is special air volume or speed required?

If so, power system matching is required.

5. Is device linkage required?

If necessary, consider the control system.

After determining these five points, you can basically judge whether you should start with the EFU or FFU solution.

22. Aili Industrial EFU and FFU product system

Aili Industries has built coverage around clean air equipment:

Motor

fan

filter

Automatic control system software and hardware

sheet metal

Whole machine assembly

production system.

Therefore, whatever customer needs:

Standard FFU

Device side EFU

still:

Ultra-thin EFU

Special air volume EFU

Special control EFU

Solutions can be matched according to specific application requirements.

23. Frequently Asked Questions

What is the biggest difference between EFU and FFU?

EFU is mainly used for local clean air applications inside the equipment or at the equipment end, while FFU is more used for air supply in clean rooms and clean areas.

Can EFU replace FFU?

uncertain. The main application scenarios of the two are different and need to be selected according to the installation location and air supply requirements.

Can FFU be installed inside a device?

Some products can be used after structural adjustment, but if there are special size, ultra-thin or linkage requirements inside the equipment, the equipment usually needs to be redesigned.

Can both EFU and FFU use HEPA?

Can. The specific filtration level needs to be determined based on actual cleanliness requirements.

Can EFU be used with FFU?

Can. The clean room can use FFU to provide an overall clean environment, and EFU can be used inside the equipment to provide local clean air.

Is EFU suitable for semiconductor equipment?

It is suitable for the clean air supply inside some semiconductor equipment. The specific needs are designed according to the equipment space, air volume, wind speed and cleanliness requirements.

Is EFU suitable for lithium battery equipment?

It can be used for the air supply inside some lithium battery equipment. It needs to be matched according to the actual process of the equipment and the air volume and wind speed requirements.

Is EFU suitable for photovoltaic equipment?

Can. For local clean air requirements inside photovoltaic equipment, the EFU solution can be designed based on the installation space and operating parameters.

Can Aili Industrial produce EFU and FFU at the same time?

Can. 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 EFU and FFU product manufacturing and solution matching.