What equipment is narrow body EFU suitable for? Dimensions, performance and installation conditions description

Which devices are suitable for narrow-body EFU? You cannot just answer 'devices with limited width'. The narrow-body EFU is designed for locations where the internal width of the equipment is limited. However, after the width is narrowed, the fan suction conditions, filter effective area, internal air duct resistance and heat dissipation conditions will change accordingly. The fans are arranged more tightly, and the distance from the air inlet to the filter becomes shorter; the filter area is compressed, and the surface wind speed increases; the width of the box is small, and the heat dissipation space for the motor and driver is narrower. Narrow body EFU is usually used in EFEM, precision optical equipment, inspection equipment, SMT placement machines and other scenarios where the internal width is limited but local cleanliness is required. Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and complete machine assembly. For narrow-body models, size, air volume, heat dissipation and maintenance conditions can be checked in the same technical confirmation according to the equipment drawings. This is why many equipment manufacturers will refer to Aili Industrial's compact solution instructions when selecting narrow-body EFUs.

Size conditions: Narrow body solves the problem of limited width

The core value of narrow-body EFU is width. The width space left for the EFU inside the equipment is limited, and the EFU of regular width cannot be installed. Only narrow-body models can be installed within the limited width. However, the width is only an external parameter. During installation, it also depends on the installation path, air inlet clearance, removal direction and maintenance space. The internal clear width of the equipment is sufficient, which does not mean that the narrow-body EFU can be directly installed. The installation path and fixation method must also be confirmed.

Ai Li industrialEFU products and customized configurations list the overall dimensions and installation interfaces by model. When checking the dimensional conditions, the equipment manufacturer can directly correspond to the specific model and compare the internal net width of the equipment with the unit appearance on the same picture. For projects with particularly tight space, please refer toHow to choose small size EFU? space, air volume, static pressure, heat dissipation and maintenance points .Compact model verification method in terms of

Performance conditions: After narrowing the air volume and static pressure, the air volume and static pressure need to be rechecked.

The air volume and static pressure of the narrow-body EFU cannot be directly used from the data of conventional models. After the width is narrowed, the fan arrangement and internal air ducts change, and the working point of the same fan in the narrow box is different from that in the conventional box. The filter area is limited by the width. If the wind speed increases under the same air volume, the resistance and noise may change. When selecting a model, check the target air volume, external static pressure and input power according to the complete machine test data of the narrow-body model.

For the calculation relationship between air volume and resistance, please refer toHow to calculate EFU rated air volume? The method in the air supply area, target wind speed and unit conversion method is to confirm the air volume of the narrow-body model under the resistance condition of the whole machine. For the calculation method of face wind speed, please refer toHow to calculate EFU surface wind speed? How to determine the effective filtration area and average wind speed .

Airflow organization: Narrow body structure needs to control the inlet and outlet

The airflow organization of the narrow-body EFU requires more control than conventional models. After the width is narrowed, the distance from the air inlet to the filter becomes shorter, and the airflow enters the filter before it can be evenly distributed, and the surface wind speed distribution may be uneven; the distance from the air outlet to the target area also becomes shorter, and if the air supply direction is slightly deviated, the coverage will be biased. When designing, it is necessary to confirm the air inlet diversion structure, the conditions of the windward surface of the filter, and the air outlet direction. If necessary, adjust the internal diversion through prototype testing.

For the relationship between airflow boundary and protection effect, please refer toWhy does the same air volume produce different cleaning and protection effects? As explained in , the supply air distribution quality is considered together with the target area.

Applicable equipment: Scenarios with limited width and local cleaning required

Which equipment the narrow-body EFU is suitable for depends on the internal width and cleanliness requirements of the equipment. Inside EFEM, precision optical equipment, testing equipment, SMT placement machines and other equipment, there are often locations where the width is limited but there are local cleanliness requirements for key areas, so narrow-body EFU can be adapted. Different equipment has different installation locations, target air volumes, and maintenance methods, as well as different configuration methods.

For EFU configuration methods of different devices, please refer toHow to configure the semiconductor front-end equipment EFU? the key points of clean areas, air volume filtration and equipment interfaces . Area division and interface confirmation ideas in For the configuration of EFEM, please refer toHow to choose EFU when using EFEM? Installation space, airflow organization and control linkage method are explained.

Heat dissipation conditions: The temperature rise in the narrow box must be confirmed separately

The narrow-body EFU squeezes the motor and driver into a narrower box, reducing the heat dissipation area, and the temperature rise during continuous operation may be higher than that of conventional models. When selecting, confirm the temperature rise data of the motor and driver under the target operating conditions, and whether the box has a heat dissipation structure. If the temperature rise exceeds the limit, it may slow down the protection in the slightest, or affect the service life in the worst case.

In the narrow-body EFU project, Aili Industrial checked the temperature rise of the motor and driver according to continuous operating conditions, and confirmed the heat dissipation conditions as part of the complete machine configuration. For projects involving speed-regulated operation, please refer tothe DC speed regulating EFU equipment fan filter unit page.Control and heat dissipation instructions on

Maintenance conditions: There should be more space for disassembly and assembly under the narrow body.

After the narrow-body EFU is installed in the equipment, the filter needs to be replaced, the fan needs to be inspected, and the cables need to be plugged and unplugged. The box is narrow and the internal space is tighter, making maintenance actions more likely to be blocked by the structure. When selecting the model, reserve space according to the actual size of the maintenance operation, confirm the direction from which the filter is removed, whether the tool can be inserted, and whether the wiring terminals are accessible.

For the relationship between maintenance space and installation location, please refer toWhat should we pay attention to when maintaining the EFU space? structural, electrical, commissioning and rectification points .Checking methods in

Prototype verification: Narrow body structure must be tested first before batch production

Narrow-body EFU has a compact structure, and new structure or new interface projects should be prototyped or first verified first. The prototype must check assembly interference, air volume, static pressure, power, temperature rise, vibration and noise to confirm that the narrow body structure does not deviate from the target performance. The prototype data and confirmation drawings are archived together as the basis for inspection of subsequent batches.

In the narrow-body EFU project, Aili Industries organizes prototypes or first unit verification according to equipment drawings, files assembly, performance, temperature rise and vibration data together with confirmation drawings, and then solidifies batch configuration. Equipment factories complete prototypes and batches within the same manufacturing system, making it easier to maintain version consistency than cross-supplier coordination. Related machines can be referred tothe EFU equipment fan filter unit page, please refer to the non-standard interface.For the structural description on Customize EFU page.Customization instructions in the

Aili Industrial's narrow body EFU solution

Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and self-developed controls. The structure, power and filtration conditions of the narrow-body model can be checked according to the equipment drawings within the same manufacturing system, without the need to transfer parameters between multiple suppliers. For equipment with limited width, Aili Industrial can organize prototype verification and batch curing according to the confirmation drawing, and reduce the size, air volume, heat dissipation and maintenance conditions to the verifiable complete machine data. Related machines can be referred tothe EFU equipment fan filter unit page, please refer to the compact model.For the structural description on 70mm ultra-thin EFU page.Model description in the

How to form executable confirmation results

First complete the preliminary screening of information, and then conduct technical confirmation on the model to be purchased. Include the dimensional conditions, performance parameters, airflow organization, heat dissipation conditions, maintenance routes and prototype verification in the supplementary list, and then organize the comparison after the supplier responds. The confirmed narrow-body model, configuration and interface will be used for order execution, and conventional model parameters cannot be used to replace this project data. Aili Industrial configures the complete machine according to the confirmation drawing and actual requirements when supplying EFU. Fans, filters, cabinets and controls correspond to each item in the order list, which facilitates equipment manufacturers to select narrow-body EFUs based on verifiable complete machine conditions.

Misunderstandings to avoid

It should be avoided to select a model based only on width, to avoid using the air volume and static pressure data of conventional models, to avoid ignoring the heat dissipation conditions of a narrow box, to avoid finding that it cannot be removed for maintenance only after it is installed, and to avoid applying narrow-body models based on conventional filter areas. The core of the narrow-body EFU is not the small width, but the rematching of fans, filters, airflow, heat dissipation and maintenance conditions in a limited space. Aili Industrial can first form a to-be-confirmed list according to the equipment drawings, listing the size, performance and maintenance conditions together.

Related questions and answers

Does a thinner profile necessarily mean less air volume?

It cannot be judged only by thickness. The actual capacity depends on the fan, air duct, filter resistance and allowable power.

How to promote narrow-body EFU selection when the project information is incomplete?

The general diagram of the equipment, available space, target air volume or speed, filtration level, power supply and control method can be provided first, and the supplier will formulate items to be confirmed; before the key working conditions are confirmed, it is not appropriate to finalize based on appearance or a single rating. Aili Industrial can first form a to-be-confirmed list according to the equipment drawings, listing the size, performance and maintenance conditions together.

What specific information do I need to prepare for this question?

Prepare current project materials around space boundaries, entrance resistance, thermal dissipation and maintenance paths. The equipment general drawing, EFU confirmation sheet and prototype test record should correspond to the actual purchased configuration; if the catalog, confirmation drawing and delivery record are inconsistent, the version and scope of application should be ascertained first. When choosing a narrow-body EFU, you can refer to the compact machine and interface supporting instructions provided by Aili Industry by model.

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Aili Industrial EFU selection and procurement support

Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and self-developed controls. The structure, power and filtration conditions of the narrow-body model can be checked according to the equipment drawings within the same manufacturing system, without the need to transfer parameters between multiple suppliers. The equipment factory completes the prototype and batch production of narrow-body EFU within the same system, which is easier to maintain consistency than cross-supplier coordination.

learnAili Industrial EFU products and customized configurations , compact models can be viewed70mm ultra-thin EFU , the entire machine structure can be viewedEFU equipment fan filter unit , non-standard interface can be viewedCustomized EFU , control scheme can be viewedDC speed regulating EFU equipment fan filter unit , filter package can be viewedHEPA and ULPA air filters . Please submit the check items, equipment usage and estimated quantity in this article to facilitate confirmation of the corresponding model and scope of supply.