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The multi-person return air clean workbench organizes local air circulation through filtered air supply and return air channels, and multiple operating stations can be arranged on the workbench. Aili Industrial plans personnel, workpieces, tools and material areas according to the needs of independent operations, collaborative assembly or continuous processes, so that the wide work area matches the direction of the circulating air flow.
Number of operators |
Airflow pattern |
Workstation layout |
Custom support |
|---|---|---|---|
multiple people |
loop filter |
Multiple workstations or wide workpiece areas |
Size, structure and function customization |
The workbench processes the air through the primary filter and the final high-efficiency filter. The filtered clean air is sent to the work area and then returned to the front end of the filtration system through the return air channel to form a cycle.
The multi-station countertop needs to check the air supply and return performance at both ends, in the middle and near the filter joints. The return air structure needs to match the length of the work area, internal air duct and filter resistance. Unreasonable air duct design may lead to poor return air and affect the air flow distribution in the work area. For specific air volume calculations, please refer to How to convert face wind speed and air volume? , please refer to the working point reading method Why should we look at the complete performance curve when selecting FFU?。
Determine the effective width of each workstation based on the number of personnel, workpiece size and tool occupancy range, and arrange a shared tool area and material temporary storage area.
Continuous processes need to clearly define the handover location to reduce cross-station movements of personnel and mutual interference between tools. When multiple people operate the same workpiece together, the station position, fixture and workpiece movement path need to be checked.
Check the total table load, local concentrated load and support spacing together. For wider workpieces, the fixing and moving positions of the fixture and load changes during operation should be clarified.
The countertop material, surface treatment, fixed interfaces and support methods can be configured according to the process, taking into account load-bearing, cleaning and daily maintenance. Please refer to the table size and operation matching How does the size of the workbench match the actual operation?。
Check the effective filtration area, filter resistance, return air channel loss and operating wind speed together, and then determine the number of fans and drive configuration.
Related filtering products can be viewed HEPA and ULPA filters , confirm efficiency, sealing and maintenance methods according to project requirements. How to read the filter efficiency report can be found in How to read the test particle size in the filter efficiency report?。
Evaluate unified operations or zoning controls based on how workstations are used. The zoning function requires corresponding air supply and return structure support, and the impact of different opening combinations on adjacent workstations must be checked.
The specific plan should be confirmed together to match the control method with the air flow organization, detection conditions and actual use process.
After the air passes through the primary filter, it is sent into the filtration system by the fan, and then enters the work area of each station through the terminal high-efficiency filter, and then returns to the front end of the filtration system through the return air channel to form a cycle.
Air enters→primary filter→fan air supply→end high-efficiency filter→multi-station air supply→return air channel→circulation
Workpieces, instruments, and human movements may block airflow, and particles generated by operations may also affect adjacent locations. Placement and handover should be planned according to the actual operation, and the airflow performance in key operating areas should be checked. The influence of operating arms can be referred to How will operating the arm interfere with the air supply to the workbench? , item occlusion can be referred to Will stacking items on the workbench create a pollution dead zone?。
project |
Configuration instructions |
|---|---|
Product form |
Multi-person return air clean workbench |
Airflow pattern |
Circulation filtration, filtering air supply and return air channels |
operating position |
Front side multi-person operation |
Number of workstations |
Determined according to process, personnel spacing and effective operating width |
Work area size |
Configure according to workpiece, tools, materials and operating scope |
effective working depth |
Combining airflow coverage with actual workpiece position confirmation |
clean target |
It can be configured according to the ISO level 5 work area target, and accepted according to the agreed particle size and testing status. |
Filtration system |
The primary effect is matched with the terminal high-efficiency filter, and the quantity and arrangement are determined according to the plan. |
Return air structure |
The return air channel matches the filtration system and is confirmed according to the plan. |
Wind speed and uniformity |
Confirm according to process requirements and check the positions of different workstations |
Countertop support |
The total load, local load and support spacing are checked according to the project |
fan drive |
Configure according to air volume, resistance, air duct and control requirements |
Control method |
Unified operation or partitioned control supported by architectural design |
Process interface |
Sockets, wiring holes, tooling fixation and equipment interfaces can be configured as needed |
Overall machine size |
Determine based on transportation, approach, installation and maintenance space |
Power and power |
Confirm according to selected configuration and actual operating conditions |
Test items |
Wind speed, particle concentration, filter leak detection and electrical inspection are carried out as agreed. |
Filter efficiency and work area cleanliness are different indicators, and equipment performance needs to be confirmed through complete machine testing. The difference between cleanliness level and filtration efficiency can be found in What is the difference between cleanliness level and filtration efficiency?。
Multi-station electronic assembly |
Precision component inspection |
Wide workpiece handling |
Optical component assembly |
|---|---|---|---|
Multiple people working in parallel |
Continuous process collaboration |
Tooling and equipment matching |
Clean handling of non-hazardous materials |
Clean benches are mainly used for product protection and do not provide the personnel and environmental protection that biological safety cabinets have. When infectious materials, toxic volatiles, or other hazardous materials are involved, equipment should be selected based on the risk. Please refer to the specific boundaries Does the clean workbench protect the product or the operator? and Can an open workbench be used for hazardous materials operations?。
First record the tools, workpieces and personnel operating range required for each process, and then determine the number and total length of workstations. Shared tools, material staging and handover areas should also be factored into the layout.
When the return air channel is blocked by tools, materials or equipment, the circulating air flow is blocked, which may affect the wind speed and cleanliness of the work area. The obstruction on the return air path should be reduced according to operational needs to allow the airflow to maintain the designed circulation path.
Large work equipment, monitors or instruments should not block the direct air supply to key operating positions. Operations that may generate particles, such as unpacking and friction, should be arranged in conjunction with the direction of air flow and the location of sensitive workpieces.
Longer equipment requires confirmation of packaging dimensions, handling door openings, turning channels and on-site installation conditions.
When using segmented delivery, the connection, sealing, positioning and on-site inspection requirements should be clarified in advance, and the smoothness and support status of the table after installation should be checked. Insufficient maintenance channels will increase subsequent expenditures. This is reflected in what later expenses will be increased due to insufficient maintenance channels . There is a more detailed analysis of
Agree on the detection range at each work station, near the filter joints and at the actual operating position.
When the partition is running, the expected opening combination should be checked, and the detection results when all areas are turned on cannot be used instead of other operating states.
Keep the air inlet, return air channel and filter air outlet area clear, and clean the countertop, side enclosures and workstation connection locations according to process requirements.
Schedule maintenance based on differential pressure, air velocity, cleanliness testing and filter status. After replacing the end filter, the installation seal and related performance should be rechecked. To judge the initial resistance and final resistance, please refer to What are the initial resistance and final resistance used to judge? , sealing inspection can refer to What should be checked when cleaning equipment is accepted?。
Return air grilles and return air channels should be inspected regularly to prevent dust accumulation or material obstruction from affecting the circulating air flow.
Aili Industry has a manufacturing base of 30,000 square meters, covering R&D and manufacturing links such as motors, fans, control systems, sheet metal, air filters and complete machine assembly.
For multi-person return air workbench projects, the filter layout, fan working point, return air channel, long table support, process interface and operation control can be matched together to support non-standard design and batch project matching.
manufacturing link |
Project support |
|---|---|
Motors and fans |
Matching multi-station circulating air supply, system resistance and operation requirements |
air filter |
Configure filter arrangement, sealing and replacement methods |
control system |
Match unified operation or partition control requirements |
Sheet Metal and Structure |
Realize work area, return air channel, long table and process interface |
Complete machine assembly and testing |
Organize production and inspection according to confirmed drawings and technical requirements |
The return-air type workbench organizes circulating airflow through the return air channel, reducing dependence on external air supply; the airflow of ordinary horizontal flow workbench passes through the workpiece and is discharged directly. The selection should be based on site conditions and process requirements.
It needs to be designed based on the effective filtration area, system resistance, return air channel and control requirements. The number of air supply systems cannot be determined based on the number of people alone.
Corresponding zoning structures and control schemes are required, and the impact of operating combinations on adjacent areas is checked.
It is not suitable to stack tools and materials on the return air path for a long time. Space for return air passages should be reserved during layout, and the passages should be confirmed to be smooth during daily inspections.
The requirements can be put forward based on the workpiece size, load-bearing capacity, operating height and installation space, and the filter layout, table support and maintenance space can be checked simultaneously.
Clarifying the number of workstations, workpiece size, material flow direction, cleaning targets and site conditions will help form a product plan suitable for the actual process.
Contact us immediately to obtain the product information and technical parameters of the multi-person return air clean workbench.
→ Consult multi-station dimensions and return air structure → Submit artifacts and tool occupancy
→ Learn about filtering and running configuration → Communicate about non-standard and production line matching
pass Aili Industrial Technology Consulting , communicates product selection and customization needs.
Aili Industry - From core components to complete clean workbench machines, it provides products and technical support for multi-person assembly, precision inspection and wide-width workpiece operations.
Aili industrial multi-person return air clean workbench combines a wide table, multi-station layout and filtered return air structure, and is suitable for multi-person assembly, testing and clean packaging. It supports the number of workstations, filter layout, return air structure, table bearing and control function configuration, and can be customized according to the number of workstations, workpiece size, air return and return conditions and installation space.
