What is ultra-thin EFU? Why do on-device applications require ultra-thin designs?

EFU (Equipment Fan Filter Unit) is mainly used for clean air filtration and air supply inside the equipment or in local areas.

Compared to FFUs in clean rooms, EFUs often need to be installed inside equipment.

There is usually a more realistic problem inside the device:

Not enough space.

Process modules, electrical components, mechanical structures, sensors and various pipelines have been installed inside the equipment, so the space left for the clean air supply unit may be very limited.

Therefore, in some device-side applications, ordinary-sized EFU may not meet the installation requirements, which is also ultra-thin EFU .the main reason for the

3. What is ultra-thin EFU?

The ultra-thin EFU is not a completely different device.

It still belongs to EFU, that is:

Equipment-end fan filter unit.

The main differences are:

By redesigning the internal structure, motor, fan, filter and air flow channel, clean air filtration and air supply can be achieved within a limited installation height.

Simply put:

Common EFU:

Meet air volume, filtration and control requirements while taking into account conventional installation space.

Ultra-thin EFU:

On the basis of satisfying relevant functions, further solve:

Problems with limited height inside the equipment.

4. Why is ultra-thin EFU needed inside the device?

The interior of many devices is not a completely empty space.

For example:

inside the equipment ┌─────────────────────────┐ │ Process module │ │ │ │ ┌───────────────────────────────────────────────┐ │ │ │ Ultra-thin EFU │ │ │ └──────────────────────┘ │ │ │ │ Mechanical structure of electrical module│ └────────────────────────────┘

If the height of the EFU is too large, it may cause space conflicts with other equipment components.

Therefore, equipment designers often propose:

'Can EFU be thinner?'

This needs to be solved starting from the internal structure of the product.

5. What are the difficulties in designing ultra-thin EFU?

Ultra-thinness is not simply about lowering the product shell.

Because the EFU still needs to accommodate:

• motor

• fan

• filter

• control parts

• air flow channel

• Structural parts

If you simply reduce the height of the cabinet, it may lead to:

Fan size is insufficient

Restricted airflow path

Filter cannot be installed

Air volume decreases

or:

Motors and fans cannot be arranged properly.

Therefore, ultra-thin EFU requires overall structural design.

6. What problems need to be solved for ultra-thin EFU?

1. Motor size

The motor is an important component of the EFU power system.

Where height is restricted, the spatial relationship between motor size and fan needs to be considered.

2. Fan structure

Fans need to provide sufficient aerodynamic force within a limited space.

Therefore need to consider:

Fan size, speed, air volume, air pressure and internal air flow path.

3. Filter thickness

Filters are an important part of EFU.

If the filter occupies a large height, it will directly affect the overall thickness of the EFU.

Therefore, it is necessary to consider comprehensively:

Filtration performance, filter size, resistance and product height.

4. Air flow channel

The air needs to enter the fan smoothly and be sent out after passing through the filter.

If the interior space is overly compressed, it may affect the airflow path.

Therefore, ultra-thin design needs to consider:

Air inlet→Fan→Filter→Air outlet

The whole process.

7. What does 70mm ultra-thin EFU mean?

If the EFU product height is approximately 70mm, it usually means:

The overall structural height of the product is controlled within the range of approximately 70mm.

This design is mainly aimed at applications where the internal installation height of some equipment is limited.

For example, the equipment design stage may reserve:

The installation space is about 70mm.

At this point, you can consider the corresponding ultra-thin EFU solution.

Need to pay attention to:

70mm does not mean that all air volumes, filters and control methods can directly use the same structure.

Actual product parameters still need to be determined based on the specific application.

8. Is the thinner the better for ultra-thin EFU?

uncertain.

This is an issue that requires special attention when selecting EFU on the device side.

After the height of the EFU is reduced, the internal space will also be reduced.

Therefore, it is necessary to consider at the same time:

Air volume

wind pressure

filter

motor

fan

noise

airflow

If the equipment actually only requires an 80mm installation height, then over-compressing the product in pursuit of a lower height may not necessarily make practical sense.

So a more reasonable way is:

Determine the appropriate EFU height based on the actual installation space of the device.

9. What is the difference between ultra-thin EFU and ordinary EFU?

The basic functionality of both is the same.

The main differences are:

Ultra-thin EFUs are required to accomplish the same type of air handling tasks in a more limited space.

10. Which devices may require ultra-thin EFU?

Semiconductor equipment

Semiconductor equipment usually has a complex structure and requires the installation of multiple process modules in the internal space.

So possible for EFU:

Height, wind speed, cleanliness and airflow uniformity

Make a request.

Photovoltaic equipment

There may also be space constraints inside photovoltaic production equipment.

EFU requires a combination of:

Installation space, air volume and wind speed

Make a design.

Lithium battery equipment

Lithium battery-related equipment may have specific requirements for local clean air and wind speed.

Therefore, it is necessary to consider at the same time:

Air volume, air speed, filters and equipment structure.

Panel display device

Panel display equipment usually has high requirements for a clean environment, and the equipment structure is relatively complex.

EFU may need to complete clean air supply in a limited space.

SMT machines and automation equipment

The internal space of this type of equipment is usually relatively compact.

Therefore, EFU needs to focus on:

Size, installation method, air volume and air speed.

11. Does ultra-thin EFU necessarily need to be customized?

uncertain.

If the installation size, air volume, air speed and filter requirements of the equipment match the existing specifications, the corresponding standard products can be used.

But if it exists:

• special height

• special length

• special width

• Special air volume

• Special wind speed

• special filter

• Special control method

It requires further customization.

Especially when the internal height of the equipment is very limited, the product structure often needs to be redesigned according to the equipment space.

12. How does Aili Industrial make ultra-thin EFU?

Aili Industrial's EFU production does not simply purchase external components for assembly.

Production system covers:

motor

fan

filter

sheet metal

Automatic control system software and hardware

Whole machine assembly

Therefore, in the ultra-thin EFU design process, overall matching can be made between multiple components.

For example:

Installation height → Motor → Fan → Filter → Air flow channel → Box structure → Control system

If the dimensions of one part change, its effect on other parts also needs to be considered.

This is especially important for EFU projects where equipment interiors are highly restricted.

13. Aili Industrial 70mm ultra-thin EFU

For applications where the internal installation space of some equipment is limited, Aili Industrial has developed an ultra-thin EFU solution with a height of about 70mm.。

Comprehensive considerations need to be taken into consideration during the product design process:

Product height

Air volume

wind speed

filter

motor

fan

as well as:

Control method

and other factors.

Therefore, 70mm mainly reflects the spatial adaptability of the product structure, rather than a separate parameter divorced from actual application.

Whether a specific product is suitable for a certain piece of equipment needs to be confirmed based on the actual installation space and technical requirements.

14. In what scenarios can ultra-thin EFU be used?

Ultra-thin EFU is mainly suitable for:

Clean air supply inside the equipment

local clean area

Space inside the device is limited

Precision manufacturing equipment

Automation equipment

Semiconductor equipment

Photovoltaic equipment

Lithium battery equipment

Panel display device

Electronic manufacturing equipment

and other applications.

15. What information do you need to provide when choosing ultra-thin EFU?

If the equipment requires ultra-thin EFU, it is recommended to provide:

Installation height

For example:

≤70mm

Installation length and width

Determine the maximum external dimensions of the EFU.

Target air volume

Determine air supply needs.

target wind speed

Determine local airflow requirements.

Filtering requirements

For example:

HEPA/ULPA

power supply

include:

voltage, frequency, etc.

Control method

For example:

Independent speed regulation, equipment linkage, communication control, etc.

Equipment drawings

If you can provide installation location drawings or three-dimensional structural documents, it can help confirm the matching relationship between the EFU and the internal structure of the equipment.

16. Ultra-thin EFU is not a simple reduction of ordinary EFU

This is the most important point to understand ultra-thin EFU.

If ordinary EFU is directly reduced in size, it may appear:

Insufficient fan space

Motor cannot be installed

Filter size is limited

Air flow channel narrows

The air volume cannot meet the requirements

Therefore, ultra-thin EFU is more suitable for design starting from the internal structure.

That is:

Rather than building a thin box and stuffing components inside, the overall design starts with the motor, fan, filter, and airflow path.

17. What needs does Aili Industrial’s ultra-thin EFU suit?

If your device is present:

Installation height is limited

Requires HEPA or ULPA filtration

There are requirements for air volume

There are requirements for wind speed

Requires device linkage

In other cases, the ultra-thin EFU solution can be considered.

Aili Industry can provide EFU based on the equipment installation space and actual usage requirements:

Size, fan, motor, filter, structure and control method

Make a match.

18. Frequently Asked Questions

What is ultra-thin EFU?

The ultra-thin EFU is an equipment-side fan filter unit that achieves clean air filtration and air supply through a compact structure design within a limited installation height.

How thin can ultra-thin EFU be?

The height of some EFU products of Aili Industrial can reach about 70mm. The specific height needs to be determined according to the air volume, filter, motor, fan and structural requirements.

Can ultra-thin EFU use HEPA?

HEPA filters can be configured according to specific construction and filtration requirements.

Can ultra-thin EFU use ULPA?

It can be configured according to the cleanliness requirements and product structure. The specific needs are to match the filter resistance and air volume.

Which industries are ultra-thin EFU suitable for?

It can be used in semiconductors, photovoltaics, lithium batteries, panel displays, electronic manufacturing, placement machines and other applications that require clean air supply at the equipment end.

Does ultra-thin EFU need to be customized?

uncertain. If the existing specifications can meet the equipment requirements, the corresponding standard products can be used; if there are special requirements for installation size, air volume, wind speed or control method, they can be customized.