When does the special-shaped EFU box need to be customized? Structural boundaries, technical protocols and acceptance points

When special-shaped EFU cabinets need to be customized, it cannot just be because 'the standard cabinet cannot be placed in the equipment.' Standard EFU cabinets are designed according to common sizes and installation methods. When the shape of the internal space of the equipment is irregular, the direction of the air inlet and outlet is inconsistent with the standard model, the installation hole position cannot correspond, the maintenance path is restricted, or it needs to be conformal to the equipment structure, special-shaped cabinet customization needs to be considered. The starting point for customization is to freeze the equipment boundaries and acceptance conditions, and then determine the cabinet shape, air inlet and outlet, installation hole position, filter configuration and control interface, rather than making a shape first and then improving performance. Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and complete machine assembly. The special-shaped box project can organize confirmation drawings, prototype verification and version solidification according to equipment drawings, and coordinate the structure, power and control conditions in the same manufacturing system. This is why many equipment manufacturers will refer to the Aili Industrial structural plan description when judging whether special-shaped cabinet customization is needed.

When customization is needed: first determine whether the standard cabinet can be adapted

To determine whether a special-shaped cabinet is needed, first check whether the standard cabinet can meet the installation and performance requirements. Standard cabinets have fixed ranges in terms of size, air inlet and outlet direction, installation hole positions, and maintenance paths. If the equipment conditions fall within the standard range, priority will be given to the standard model, which will make the delivery time and cost more controllable. Only when the equipment conditions exceed the standard range and the cost of adjusting the equipment structure is higher, special-shaped cabinet customization should be considered.

Ai Li industrialEFU products and customized configurations list standard cabinet dimensions and installation interfaces by model. Equipment manufacturers can directly correspond to specific models when judging whether customization is required, and compare equipment conditions and standard ranges in the same comparison table.

Structural boundaries: What conditions should be frozen before customization

Once you've decided to customize, the first step is to freeze the structure boundaries. The available space inside the equipment, installation standards, air inlet and outlet locations, maintenance directions, load-bearing conditions and movement avoidance must be clearly marked on the confirmation diagram. The boundaries are not frozen, the shape of the cabinet is changed, and subsequent performance matching and prototype verification must be reworked.

In the special-shaped box project, Aili Industrial froze the structural boundaries according to the equipment drawings, and wrote the space, datum, air outlet and maintenance direction into the confirmation drawing to avoid repeated subsequent modifications.

Technical agreement: performance, interface and acceptance must be clearly written

The technical agreement for special-shaped cabinets must clearly state the performance parameters, interface definitions and acceptance methods. Performance includes target air volume, external static pressure, filter level and resistance; interfaces include power supply, control, communication and installation interfaces; acceptance includes prototype verification items, batch inspection items and judgment basis. The technical agreement was written in a general way, and it was only after the prototype was made that the air volume was insufficient or the interface was incompatible, making modifications more expensive.

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 bases the performance parameters in the technical agreement on the operating conditions of the whole machine. The interface definition can be referred toHow to implement EFU local speed adjustment? wiring, parameters, control logic and debugging methods .Terminal and signal descriptions in

Filtration configuration: The filter area in the special-shaped box needs to be rechecked

The filter configuration of the special-shaped box cannot be directly used as the filter model of the standard model. After the box shape changes, the effective area, installation method and sealing structure of the filter must be rechecked. The filtration area shrinks, the face wind speed increases, the resistance and noise change; the sealing structure changes, and the bypass risk needs to be re-confirmed. When customizing, the filter should be rematched according to the target air volume and filtration level, rather than stuffing the standard filter element into a special-shaped box.

Regarding the relationship between face wind speed and protection effect, please refer toHow to calculate EFU surface wind speed? The calculation method in how to determine the effective filtration area and average wind speed is to check the filtration area and surface wind speed of the special-shaped box under the same caliber. Filter packages can be viewedthe HEPA vs. ULPA air filters page.Rating descriptions on

Prototype verification: Special-shaped structures must be tested first

The special-shaped cabinet is a new structure, so it is advisable to make a prototype or the first one for verification first. The prototype must check assembly interference, air volume, static pressure, power, temperature rise, vibration and noise to confirm that the special-shaped 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. If you skip the prototype and go directly to batch, the risk will be concentrated in the batch stage and the processing cost will be higher.

In the special-shaped box project, Aili Industry 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. For relevant machine structure, please refer tothe EFU Equipment Fan Filter Unit page.Instructions on

Version solidification: drawings, materials and control parameters must be consistent

After the prototype is approved, the confirmation drawing, bill of materials, control parameters and inspection records must be formed into a fixed version. The drawing version of the special-shaped cabinet is especially important. Once the shape, hole position, and air outlet position of the cabinet change, the previous prototype data may no longer be applicable. Batch execution is based on the same version, and changes must be approved and synchronized to drawings and materials to avoid configuration deviations in subsequent batches.

For projects involving non-standard interfaces, please refer toHow to customize non-standard EFU? equipment drawings, performance parameters, interfaces and prototype confirmation correspond to the structural changes of special-shaped cabinets and batch configuration.The version management ideas in

Key points for acceptance: Structure, performance and documents must correspond

The acceptance of special-shaped cabinets must match the structure, performance and documents. Structural acceptance depends on whether the hole position, sealing, and maintenance space comply with the confirmation drawing; performance acceptance depends on whether the air volume, static pressure, power, temperature rise, vibration, and noise meet the technical agreement requirements; document acceptance depends on whether the confirmation drawing, inspection records, and random documents are complete. If the three do not correspond, the acceptance conclusion will be incomplete.

In the special-shaped box project, Aili Industry organizes acceptance according to the confirmation drawing and technical agreement, and maps the structure, performance and documents to the specific model and batch. For projects delivered in batches, please refer toWhich batch of equipment should the random spare parts of the EFU batch project be delivered with? The batch management idea in , corresponds to spare parts and equipment batches.

Ali Industrial's special-shaped box customization solution

Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and complete machine assembly. The structure, power and filtration conditions of the special-shaped box can be checked according to the equipment drawings within the same manufacturing system. Box processing, filter matching and complete machine assembly do not need to transfer parameters between multiple suppliers. For special-shaped box projects, Aili Industrial can organize prototype verification and batch curing according to the confirmation drawing, and reduce the structural boundaries, performance parameters and acceptance methods to verifiable complete machine data. 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

How to form executable confirmation results

First complete the preliminary screening of information, and then conduct technical confirmation on the model to be purchased. Add structural boundaries, technical protocols, filtering configurations, prototype verification and version solidification to the supplementary list, and organize comparisons after the supplier responds. The confirmed cabinet drawings, complete machine configuration and interfaces are used for order execution, and standard model parameters cannot be used to replace this project data. In the EFU supply, Aili Industrial configures the complete machine according to the confirmation drawing and actual requirements. The cabinet, filter, fan and control correspond one by one according to the order list, which facilitates the equipment factory to customize the special-shaped cabinet to the verifiable complete machine conditions.

Misunderstandings to avoid

We should avoid rushing to customize the standard cabinet when it can still be adapted. We should avoid making the shape before the structural boundary is frozen. We should avoid technical agreements that only include ratings but not working conditions. We should avoid directly using standard models for filtering configurations. We should avoid skipping prototypes and going directly to batches. The core of special-shaped cabinet customization is not the special appearance, but that the structure, performance, interface and acceptance can form a verifiable closed loop. Aili Industrial can first form a to-be-confirmed list according to the equipment drawings, listing the structure, performance and acceptance conditions together.

Related questions and answers

Can non-standard EFU skip the prototype and go directly to batch production?

For new structure or new interface projects, it is recommended to verify the prototype or the first unit first, and then solidify the batch configuration after confirming the performance and assembly.

How to promote special-shaped EFU cabinet customization when the project information is incomplete?

The equipment general diagram, available space, target air volume or wind 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 structure, performance and interface conditions together.

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

Prepare current project materials around confirmation diagrams, performance conditions, prototype verification and version solidification. 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 customizing the special-shaped EFU box, you can refer to the structure and performance supporting instructions provided by Aili Industry according to the model.

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Key points for selection and acceptance inspection

Aili Industrial EFU selection and procurement support

Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and complete machine assembly. The structure, power and filtration conditions of the special-shaped box can be checked according to the equipment drawings within the same manufacturing system. Box processing, filter matching and complete machine assembly do not need to transfer parameters between multiple suppliers. The equipment factory completes the prototype and batch production of special-shaped cabinets within the same system, which makes it easier to maintain version consistency than cross-supplier coordination.

learnAili Industrial EFU products and customized configurations , the complete machine structure can be viewedEFU equipment fan filter unit , non-standard customization can be viewedCustomized EFU , filtering 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.