How to choose between small size EFU and regular size EFU? Installation conditions, operating costs and maintenance differences

How to choose between small size EFU and regular size EFU? You can't just compare the appearance and size. After the size is reduced, the fan suction conditions, filter effective area, internal air duct resistance and heat dissipation conditions will also change. Regular-size EFUs are designed according to common equipment spaces, with sufficient installation and heat dissipation space for fans and filters; small-size EFUs rematch these conditions in a limited space, and their performance and maintenance methods are different from conventional models. When comparing two types of models, we need to look at installation conditions, actual operating points, operating costs and maintenance differences under the same target operating conditions, rather than just comparing sizes or ratings. Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and complete machine assembly. The structure, performance and control conditions of small-size and conventional models can be checked according to equipment drawings in the same manufacturing system. Equipment manufacturers can compare the two types of models when comparing them.Aili Industrial EFU products and customized configurationsThe two product pages of 70mm ultra-thin EFU put installation, cost and maintenance conditions on the same evaluation basis. This is why many equipment manufacturers will refer to the product description of Aili Industrial when distinguishing between small-size EFU and regular-size EFU.

Installation conditions: Space constraints determine structural selection

The most direct difference between small-size EFU and regular-size EFU is the installation space. Regular size EFU is designed according to common equipment space, and the installation location is relatively ample; small size EFU is designed for locations with limited space. When installing, the installation path, air inlet clearance, and removal direction must also be considered. When the internal space of the equipment is sufficient, the structure of the regular-sized EFU is more flexible; when the space is tight, the small-sized EFU can be installed. However, the small size is only an external parameter, and the installation path and maintenance space must be confirmed during installation.

Ai Li industrialThe 70mm ultra-thin EFU page lists compact model dimensions and installation instructions by model. When checking the installation conditions, the equipment manufacturer can directly correspond to the specific model and compare the internal space of the equipment and the appearance of the unit on the same picture.

Performance difference: Small size does not mean low performance, but it should be checked according to the data of the whole machine

The air volume and static pressure of small-sized EFU cannot be directly used as the data of conventional models. After the size is reduced, the fan suction conditions and internal air duct resistance change, and the working point of the same fan in a small box is different from that in a conventional box. The filter area is compressed, the wind speed increases under the same air volume, and the resistance and noise may change. When comparing performance, check the target air volume, external static pressure and input power under their respective actual operating conditions, rather than just looking at sample ratings.

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 comparison of the two types of models on the same calculation caliber. 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 .

Operating costs: efficiency range and partial load performance are different

For comparison of operating costs, the input power must be considered under the same target operating conditions. The fan and filter area of ​​the small-sized EFU is limited, and the same air volume may require higher speed or power, and the energy consumption may be higher than that of conventional models; the fan and filter area of ​​the conventional-sized EFU are sufficient, and the working point is more likely to fall into the high-efficiency zone. However, small-size EFUs are used in locations with limited space, which may save equipment modification costs. The operating costs must be comprehensively judged based on project conditions.

Regarding the relationship between fan operating point and power, please refer toHow to choose EFU centrifugal fan? The power verification method in the operating point, power, temperature rise and continuous operation requirements bases the comparison of operating costs of the two types of models on the same operating point.

Maintenance differences: small boxes require more space for disassembly and assembly

The difference in maintenance methods comes from structural space. The small-sized EFU box has a small body, and the space for filter replacement, fan maintenance, and cable plugging and unplugging is tighter, and maintenance actions are more likely to be blocked by the structure; the internal space of a regular-sized EFU is relatively generous, and the maintenance path is easier. When comparing maintenance methods, confirm which direction the filter is removed from, whether tools can be inserted, and whether the wiring terminals are accessible, rather than just looking at the static installation dimensions.

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

Applicable scenarios: Select according to space and maintenance conditions

The applicable scenarios of small-size EFU and regular-size EFU are determined by the installation space and maintenance conditions. The internal space of the equipment is sufficient, the maintenance path is smooth, and the structure of the regular-sized EFU is more flexible; the space is compact and the regular-sized EFU cannot be installed, so small-sized EFU can be adapted. Some devices have different spaces in different areas, so two types of models may need to be used together. When selecting a model, first clarify the net dimensions and maintenance conditions of the installation location, and then decide which type of machine to use.

For the configuration method of device-side EFU, 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

Aili Industrial covers both small size and regular size EFU

Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and self-developed controls. The structure, performance and control conditions of small-sized and conventional models can be checked according to equipment drawings within the same manufacturing system, eliminating the need to transmit parameters back and forth between two suppliers. When comparing two types of models, equipment manufacturers can check installation, performance, cost and maintenance conditions within the same manufacturing system. For equipment with limited space, Aili Industrial can organize prototype verification and batch curing according to the confirmation drawing, and reduce the structure, performance and maintenance conditions of small-size models 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 the installation conditions, performance parameters, operating costs, maintenance methods and applicable scenarios to the supplementary list, and then organize the comparison after the supplier responds. The confirmed model, configuration and interface are used for order execution, and regular model parameters cannot be used to replace small-size data. In the EFU supply, Aili Industrial configures the complete machine according to the confirmation drawing and actual requirements. The fan, filter, box and control correspond to each item in the order list, which facilitates the equipment manufacturer to compare the two types of models to the verifiable complete machine conditions.

Misunderstandings to avoid

It should be avoided to compare only the size, to avoid using the air volume and static pressure data of conventional models, to avoid ignoring the heat dissipation conditions of the small box, to avoid discovering that it cannot be removed for maintenance only after it is installed, and to avoid applying the conventional filter area to small-sized models. The difference between small-size EFU and regular-size EFU is not in the name, but in the installation space, actual working point, filtration area, maintenance path and heat dissipation conditions. Aili Industrial can first form a to-be-confirmed list according to the equipment drawings, listing the installation, 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 the comparison of small-size EFU and regular-size EFU 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 installation, performance and maintenance conditions together.

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

Prepare current project materials around unified working conditions, applicable boundaries, and differences in operation and maintenance. The equipment general drawing, EFU confirmation sheet and complete machine 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 comparing small-size EFU and regular-size EFU, you can refer to the complete machine and structure 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, performance and control conditions of small-size and conventional models can be checked according to equipment drawings within the same manufacturing system, without having to transfer parameters between multiple suppliers. The equipment factory completes the comparison and complete machine matching of the two types of models 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.