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fan filter unit (ffu) Systems
Industrial-Grade FFU Air Filtration for ISO Standard Cleanrooms
In high-tech manufacturing, maintaining an ultra-clean environment relies heavily on the FFU. At Deiiang Company, we engineer specialized FFU solutions featuring galvanized enclosures and robust AC motors designed to deliver precise 0.3~0.5 m/s average wind speeds.
This technical guide details the mechanics of an FFU, its critical role in cleanrooms, technical advantages, FFU airflow patterns, integration strategies, and Deiiang's custom FFU specifications.
what is an ffu?
An FFU (Fan Filter Unit) is a motorized ceiling-mounted device that supplies purified air to microenvironments. Every FFU utilizes a built-in fan and a terminal HEPA filter. By pulling ambient air and forcing it through the media, the FFU guarantees an unbroken stream of ultra-clean air at an initial pressure loss of just 110Pa@0.45m/s.
At Deiiang Company, our standard FFU models deliver air volumes ranging from 500 to 2000 m³/h. Equipped with 99.99%@0.3μm efficiency filters, our FFU networks safeguard critical operations in pharmaceuticals and semiconductor fabrication.
The FFU's Role in Cleanrooms
The primary role of an FFU is to localize air purification. Rather than relying on central ducting, decentralized FFU arrays offer redundancy and targeted contamination control.
1 Particle Elimination
Deiiang FFU systems utilize high-capacity filters (up to 1220x610x69mm in size) to physically trap sub-micron particles, ACHieving strict iso classifications.
2 Plenum Pressurization
By generating an external static pressure of 190Pa (10mmAq), the FFU ensures downward flow overcomes resistance, keeping the workspace continuously flushed with clean air.
Note:Deiiang Company ensures every FFU limits fan vibration coefficients to an ultra-low 0.2~0.5, vital for photolithography stability.
Advantages of Deiiang FFU Systems
Integrating our FFU modules provides measurable operational upgrades:
Controlled Noise Levels
Our optimized AC motor FFU keeps operational noise strictly between 55-63 dB, preventing operator fatigue.
Compact Footprint
With heights as low as 230mm and 260mm, a Deiiang FFU fits perfectly into restricted ceiling plenums.
Robust Power Options
Running on a standard 220/50 power supply, our FFU models offer efficient power draws of 120W, 200W, or 230W.
Modularity
Need higher ISO classes? Simply drop an additional FFU into the ceiling grid without redesigning HVAC ducts.
FFU Airflow Dynamics
When installed edge-to-edge, the FFU generates laminar airflow, pushing a uniform 0.45m/s curtain of air downwards to eliminate all turbulence.
For less critical zones, staggered FFU placement creates mixed/turbulent flow. The FFU injects high-velocity clean air that dilutes the room's overall particle count before extraction.
Matching FFU fan models (#315, #400, #470) to your specific volume needs ensures optimal airflow management.
Precise FFU placement guarantees compliance with international cleanroom standards.
100% FFU Coverage
Minimal turbulence
Partial FFU Coverage
Better mixing
FFU Installation Locations
Where you mount the FFU determines its spatial efficiency.
Deiiang FFU Technical Specifications
Every process demands a specific FFU setup. Deiiang manufactures highly customizable FFU solutions constructed with durable Galvanized boxes to withstand continuous operation.
Whether your FFU requires an ultra-thin 230mm profile or needs to push 2000 m³/h, we deliver precision-engineered FFU modules that easily integrate into your cleanroom grid.
FFU Parameter Chart
- Dimensions: Width: 575/615/920/1175/1225mm | Length: 575/615/1175mm | Height: 230mm, 260mm.
- Air Volume (m³/h): 500, 600, 900, 1000, 1200, 2000.
- Fan Data: Models #315, #400, #470 | AC Current | 120w-230w Power.
- Performance: 55-63 dB Noise | 0.2~0.5 Vibration Coef | 190(10mmAq) Static Pressure.
- Filter Specs: 99.99%@0.3μm Efficiency | 110Pa@0.45m/s Initial Loss.
Deiiang FFU Case Study: Electronics Cleanroom
Project Overview & Challenges
A major microelectronics manufacturer required an ISO class 5 cleanroom utilizing a massive FFU array. The project faced severe challenges: the ceiling plenum was extremely limited, requiring an FFU with a height under 250mm. Furthermore, strict vibration tolerances (max 0.5 coefficient) and low noise caps (<60 dB) were mandated to protect delicate lithography machines.
Deiiang FFU Solutions
We deployed 500 units of our ultra-thin FFU (1175x575x230mm). These specific FFU models utilized customized galvanized boxes and AC fans (#315) operating at 120w, perfectly managing power consumption. The integrated 1170x570x69 filters achieved 99.99%@0.3μm efficiency, while our fan balancers kept vibration between 0.2~0.5, exceeding client expectations.
Project Site Photos
1. FFU Box Manufacturing
2. 110Pa Drop FFU Testing
3. Grid FFU Installation
4. Finished FFU Cleanroom
Providing high-performance FFU systems with verified 99.99% efficiency for global tech facilities.
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