Fan With Scroll Housing EC BMF355

1.A fan with a scroll housing, also known as a centrifugal fan or a squirrel cage fan, is a type of fan that is commonly used in HVAC (heating, ventilation, and air conditioning) systems and various industrial applications.

2.It is designed to move air or other gases in a specific direction by creating a centrifugal force.

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Product description


Fan with Scroll housing -EC -200

Size(mm)SupplyPolesVoltage(V)Frequency(Hz)Power Input(W)Current(A)Max airflow(m³/h)Speed(rpm)Noise(dBA)Amb.temp.perm.(℃)Mass(kg)InsulationErP levelDirection

Base features

Supply:3P,380~480V, 50/60 Hz
Max airflow:6200 m³/h (static pressure=300Pa)
Noise:85 dB(A)
Protection class:IP54
Insulation class:F
Bearings:maintenance-free ball bearings
Integrated, 0~10V or PWM control
ErP level:2015

Structure features

Impeller material:Galvanised sheet steel
Inlet type:Single Inlet
Impeller type:Forward curved impeller
Housing type:Volute with support foot
With inlet ring
Net weight:37.2 kg


Motor poles:8
Voltage:400 VAC
Power input:3000 W
Current:4.7 A
Speed:1250 r/min



The scroll housing is a key component of this type of fan. It consists of a curved or spiral-shaped casing that surrounds the fan wheel or impeller. The impeller is typically a set of blades or vanes mounted on a rotating shaft. As the impeller rotates, it draws air into the center of the scroll housing and then forces it to move in a radial direction towards the outlet.

The scroll housing plays an important role in increasing the efficiency of the fan by converting the kinetic energy of the rotating impeller into pressure energy. The curved shape of the housing gradually accelerates the airflow and creates a pressure difference, allowing the fan to generate higher static pressures compared to other types of fans, such as axial fans.

Centrifugal fans with scroll housings are commonly used in applications where there is a need for increased static pressure or where space is limited. They are often found in HVAC systems to move air through ductwork, as well as in industrial processes that require ventilation, exhaust, or air circulation.


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1. Founded in 2001 to provide high-quality products and sourcing solutions at a competitive cost.
2. Manufacturing Facilities :Manufacturing plants located in multiple regions in China
3. Service locations: Fort Wayne, Indiana, USA(Responsible for after-sales service of products) Changzhou, Jiangsu, China
4. 2021 sales of $650 million In 2021, 1 million fans and 600,000 motors will be produced
5. The total number of employees is 268, including 20 technical teams and 26 sales team



Our Quality Control

1. Quality is everyone’s job → TQM -Total Quality Management
2. Higher quality means lower costs → TQC – Total Quality Cost Control.
3. Continuous Improvement → ISO9000 & Six Sigma Tools
4. Working with customer as a Team → Teamwork & Two Way Communications



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