Number of views: 1206 Author: Editor of this site Release time: 2026-08-29 Source: This site
Can. The partitionless high-efficiency filter is a common type of filter structure in FFU and EFU. It is especially suitable for clean air treatment equipment that requires a balance between filtration area, equipment thickness and air supply performance.
FFU and EFU usually integrate fans, filters and control components into a relatively compact equipment structure. Therefore, the filter cannot be selected only based on filtration efficiency, but also needs to match the equipment size, fan air volume, static pressure, filter resistance and installation method .
FFU, Fan Filter Unit, usually consists of:
Fan + high efficiency filter + box + control system
composition.
When the equipment is running, the fan sucks in the air, filters it with a high-efficiency filter, and then supplies it to the clean area.
Since FFU is usually installed on the ceiling of a clean room or other clean air supply area, the overall thickness, weight and installation method of the equipment need to be comprehensively considered.
The partition-less structure does not use traditional partitions. The fold distance of the filter material can be fixed by glue lines, making the internal structure of the filter more compact, so it can adapt to the structural design of some FFUs.
EFU is also a clean air supply equipment that combines a fan and filter, but the equipment structure, installation height and air supply requirements of different projects may differ.
Especially in semiconductor equipment, electronic manufacturing equipment and local clean environments, EFU may need to be installed above the equipment or integrated with the equipment structure.
At this time the filter needs to satisfy both:
Equipment installation dimensions
Equipment height restrictions
Target air volume
Filtration efficiency
initial resistance
Fan static pressure
Maintenance replacement space
Therefore, the partitionless high-efficiency filter can be configured accordingly according to the internal structure of the EFU.
In actual selection, it is recommended to focus on confirming the following parameters:
parameter |
Key points for selection |
|---|---|
filter size |
Matches FFU or EFU internal installation space |
filter thickness |
Determine based on device height |
Filtration efficiency |
Determined according to cleanliness level and project requirements |
Rated air volume |
Match the fan operating point |
initial resistance |
Match the static pressure capacity of the fan |
filter area |
Affects air volume and resistance performance |
Sealing method |
Matches equipment frame structure |
Replacement method |
Determine based on equipment maintenance space |
Usage environment |
Determined based on temperature, humidity and air quality |
FFU and EFU are integrated clean air supply equipment, and the filter usually occupies important space inside the equipment.
If the installation height of the equipment is restricted, the filter thickness needs to be reasonably designed on the basis of ensuring the filtration area and performance requirements.
For example:
The height of the equipment is limited → the filter thickness needs to be controlled → the filter material fold distance and filter area need to be rematched → the air volume and resistance must be checked at the same time.
Therefore, we cannot just require 'the thinner the filter, the better', but should determine a reasonable thickness based on the overall structure of the equipment.
The filter and fan in FFU belong to an integral system.
The air flow generated by the fan needs to pass through the filter, so the filter resistance will affect the actual operating point of the fan.
If the filter resistance changes, the actual air supply volume of the system may also change.
Therefore, it is recommended to determine at the same time when selecting FFU:
Fan performance + filter resistance + target air volume
Instead of selecting the fan and filter separately and then combining them.
Aili Industrial has the R&D and production capabilities for fans, motors, control systems, FFU and filtration products, and can consider the matching relationship between fans and filters from the perspective of the entire machine.
Baffleless high-efficiency filters can be used in a variety of clean air treatment scenarios based on specific specifications, such as:
Application areas |
Typical equipment |
|---|---|
Electronic manufacturing |
FFU, clean shed |
semiconductor |
FFU, EFU |
photovoltaic |
FFU, clean air supply equipment |
Lithium battery |
Clean air supply equipment |
pharmaceutical |
FFU, clean room terminal equipment |
laboratory |
Clean air supply equipment |
Precision manufacturing |
FFU, local cleaning equipment |
The specific filtration efficiency, air volume and structure need to be determined according to actual project requirements.
Aili Industry also has fans, motors, control systems, filters, and clean equipment such as FFU and EFU .the R&D and production capabilities for
Therefore, when the partitionless high-efficiency filter is used in FFU or EFU, it can be configured in conjunction with the overall machine structure.
If customers need to select products, they can provide:
FFU/EFU model + equipment size + target air volume + filtration efficiency + installation space
For example:
FFU size: ××
Target air volume: ×× m³/h
Filtration efficiency: H13/H14
Equipment height: ×× mm
Based on these parameters, the filter size, thickness, filter area and fan matching scheme can be further determined.
For space-constrained applications such as semiconductor equipment, customized structural design can also be carried out according to the equipment installation conditions.
The high-efficiency filter without partitions is a filter component that needs to be inspected and replaced regularly.
Key observations need to be made during the maintenance process:
Changes in filter pressure difference;
Whether the air volume meets the design requirements;
Whether the filter material is damaged;
Whether the outer frame and sealing structure are complete;
Check whether there is air leakage at the connection point between the filter and the equipment.
When the filter resistance continues to increase and affects the system air volume, equipment operation data and maintenance requirements should be combined to determine whether replacement is needed.
uncertain. FFU can use different types of high-efficiency filters according to the equipment structure. The partitionless structure is more common in compact FFU, but the specific needs are determined according to the equipment design.
It can be configured according to the EFU equipment structure and cleanliness requirements. Filter size, target efficiency, air volume, resistance and fan static pressure need to be confirmed at the same time.
The filter itself has air resistance, which will affect the FFU system operating point. The fan and filter need to be matched, and the actual air volume should be based on the operating conditions of the entire machine.
no. The filter thickness needs to be comprehensively matched with the filter area, filter material fold distance, air volume, resistance and equipment installation space.
