Description
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Types :
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LWBE3G 310mm BLEC External rotor motor EC backward ventilation exhaust Fans in air-conditioning units ,AHU
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Voltage Ranges :
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230V,400V;
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Frequency :
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50/60 Hz
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Diamter :
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310mm ( impeller diameters )
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Motor Types :
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BLEC External Rotor Motor ( EC )
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Speed Control :
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0-10V Signal / PWM / RS485(Optional)
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Max.ambient Temp:
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-25℃～ +60℃
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Certificating :
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All necessary certifications suitable for USA & Europe , ETL,UL ,CE ,RoHS, ISO19001,ISO 14001,BSCI
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Protection Level:
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IP44 ,IP54,IP55
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Electronic Protection:
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Current limiting protection ,Over-temperature protection,Over-current protection,Locked-rotor protection,Soft start
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Working & Storage
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Operating temperature：-25~60℃；Operating humidity：0 ~ 85 % RH
Storing temperature：-25 ~ 70℃；Storing humidity：0 ~ 95 % RH Applicable altitude range：＜1000m |
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Balancing
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According to JB/T 9101-1999 requirements G6.3
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Product Standards :
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LVD EN60950-1 EMC EN61000-6-3,EN61000-4-2, EN61000-4-3
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Mainly Applications
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AUH/ AIR PURIFIER / Server Cooling & Ventilation / Grow Tent /Ventilation SYSTEM/ Equipments Cooling /Refrigerator ,etc;ventilation fan cooling;ventilation exhaust fans
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115V/230V/380V(AC Motor)
Diameter:1333,175,190,220,225,250,280,310,355,400,450,500,560,630mm
Materials:Plastic,Aluminum,Galavanized Metal
Air Flow:Up to 12,000+m³/h
Inout Power Ranges :25W-2.5kw
115V/230V(BLEC Motor)
Diameter:1333,175,190,220,225,250,280,310,355,400,450,500,560,630mm
Materials:Plastic,Aluminum,Galavanized Metal
Air Flow:Up to 17,000+m³/h
Inout Power Ranges :40W-4.5kw
Air Flow:Up to 17,000+m³/h
Inout Power Ranges :40W-4.5kw
24v/48v/310v(BLDC Motor)
Diameter:1333,175,190,220,225,250,280,310,355,400,450,500,560,630mm
Materials:Plastic,Aluminum,Galavanized Metal
Air Flow:Up to 3,000+m³/h
Inout Power Ranges :28W-180w
Air Flow:Up to 3,000+m³/h
Inout Power Ranges :28W-180w
Double Inlet-Centrifugal Blower
Diameter:120,133,146,180mm
Materials:Galavanized Metal
Air Flow:Up to 2,000+m³/h
Inout Power Ranges :60W-400w
Air Flow:Up to 2,000+m³/h
Inout Power Ranges :60W-400w
Dual Inlet Blower(EC Motor)
Diameter(Impeller):146mm
Materials:Plastic
Air Flow:Up to 750 m³/h
Inout Power Ranges :135w
Air Flow:Up to 750 m³/h
Inout Power Ranges :135w
Internal Rotor Motor Blower
Diameter(Impeller):7″,8″,9″,10″,12″
Materials:Galavanized Metal
Air Flow:300- 5,000 m³/h
Air Pressure :100 -600Pa
Air Flow:300- 5,000 m³/h
Air Pressure :100 -600Pa
centrifugal fan
Q1:what is centrifugal fan
A1:A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid.
Q2:What is the purpose of a centrifugal fan?
A2:Centrifugal fans are robust, typically drum-shaped devices used to provide a high-pressure flow of air for cooling,ventilation,
and other uses. Commonly known as blowers, centrifugal fans are noted for their reliability, adaptability and low
noise output
Q3:What is the difference between a centrifugal fan and a normal fan?
A3:Centrifugal fans can produce a high-pressure airflow, based on how the fan blades are angled. Adversely, the blades of an axial
fan are in line with the axis, which provides a larger, low-pressure airflow. Furthermore, axial fans tend to be lighter than
centrifugal fans, due to the low-pressure output.
Q4:Where are centrifugal fans used?
A4:They are frequently used in ductwork or piping for air conditioning and drying systems. Because they expel air at a 90-degree
angle to the intake, centrifugal fans are also used in small electronics such as laptops for higher directionality and more
effective cooling.
Q5:When to use a centrifugal fan?
A5:Centrifugal fans, also known as blowers, immediately differ from axial fans as they are more suitable for scenarios where air
needs to be displaced under high-pressure. In this case, this solution is more appropriate in contexts such as air filtration
systems, cooling towers, and several industrial processes.
Q6:What is the difference between a blower and a centrifugal fan?
A6:Roots blowers: Roots blowers are typically used in applications requiring a high differential pressure and relatively low flow
rates, capable of providing a steady flow of gas. Centrifugal fans: Centrifugal fans perform better at higher flow rates and lower
pressure differentials, allowing greater gas flow
Q7:What are the disadvantages of centrifugal fans?
A7:
* Higher power consumption: Requires more energy to operate.
* Larger and heavier: More challenging to install and maintain.
* Higher cost: Generally more expensive than axial fans.
Q8:What kind of fan moves the most air?
A8:Axial fans effectively and efficiently move high volumes of air to cool objects or ventilate spaces. They are available in
almost any size from board level to room size, and they do not require a lot of power to operate, depending on size. They also
come in both ac and dc models.
Q9:What are the three types of centrifugal fans?
A9:
Let’s have a look at the main blade characteristics.
* Forward-curved blades are not particularly long. …
* Backward-curved fan blades are fewer, longer, and they have a larger diameter compared to the forward-curved model. …
* Radial blower blades are straight and extended outwards.
Q10:What type of fan is the most efficient?
A10:
The highest-efficiency centrifugal fans use airfoil or backward-curved impeller blades (figure 2). Airfoil blades are curved
backward and have an airfoil shape (similar to a cross section of an airplane wing), while backward-curved blades are of a single
thickness of metal.
Q11:What is the function of a centrifugal fan?
A11:Centrifugal fans use the kinetic energy of the impellers to move the air stream, which in turn moves against the resistance
caused by ducts, dampers and other components. Centrifugal fans displace air radially, changing the direction (typically by 90°)
of the airflow.
Q12:what is the difference between exhaust fan and ventilation fan
A12:A ventilation fan brings fresh air into a space, improving circulation, while an exhaust fan removes stale, humid, or polluted
air, typically from kitchens or bathrooms. The key difference lies in airflow direction: ventilation fans pull outdoor air in,
while exhaust fans push indoor air out axial fan
Q1:what is centrifugal fan
A1:A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid.
Q2:What is the purpose of a centrifugal fan?
A2:Centrifugal fans are robust, typically drum-shaped devices used to provide a high-pressure flow of air for cooling,ventilation,
and other uses. Commonly known as blowers, centrifugal fans are noted for their reliability, adaptability and low
noise output
Q3:What is the difference between a centrifugal fan and a normal fan?
A3:Centrifugal fans can produce a high-pressure airflow, based on how the fan blades are angled. Adversely, the blades of an axial
fan are in line with the axis, which provides a larger, low-pressure airflow. Furthermore, axial fans tend to be lighter than
centrifugal fans, due to the low-pressure output.
Q4:Where are centrifugal fans used?
A4:They are frequently used in ductwork or piping for air conditioning and drying systems. Because they expel air at a 90-degree
angle to the intake, centrifugal fans are also used in small electronics such as laptops for higher directionality and more
effective cooling.
Q5:When to use a centrifugal fan?
A5:Centrifugal fans, also known as blowers, immediately differ from axial fans as they are more suitable for scenarios where air
needs to be displaced under high-pressure. In this case, this solution is more appropriate in contexts such as air filtration
systems, cooling towers, and several industrial processes.
Q6:What is the difference between a blower and a centrifugal fan?
A6:Roots blowers: Roots blowers are typically used in applications requiring a high differential pressure and relatively low flow
rates, capable of providing a steady flow of gas. Centrifugal fans: Centrifugal fans perform better at higher flow rates and lower
pressure differentials, allowing greater gas flow
Q7:What are the disadvantages of centrifugal fans?
A7:
* Higher power consumption: Requires more energy to operate.
* Larger and heavier: More challenging to install and maintain.
* Higher cost: Generally more expensive than axial fans.
Q8:What kind of fan moves the most air?
A8:Axial fans effectively and efficiently move high volumes of air to cool objects or ventilate spaces. They are available in
almost any size from board level to room size, and they do not require a lot of power to operate, depending on size. They also
come in both ac and dc models.
Q9:What are the three types of centrifugal fans?
A9:
Let’s have a look at the main blade characteristics.
* Forward-curved blades are not particularly long. …
* Backward-curved fan blades are fewer, longer, and they have a larger diameter compared to the forward-curved model. …
* Radial blower blades are straight and extended outwards.
Q10:What type of fan is the most efficient?
A10:
The highest-efficiency centrifugal fans use airfoil or backward-curved impeller blades (figure 2). Airfoil blades are curved
backward and have an airfoil shape (similar to a cross section of an airplane wing), while backward-curved blades are of a single
thickness of metal.
Q11:What is the function of a centrifugal fan?
A11:Centrifugal fans use the kinetic energy of the impellers to move the air stream, which in turn moves against the resistance
caused by ducts, dampers and other components. Centrifugal fans displace air radially, changing the direction (typically by 90°)
of the airflow.
Q12:what is the difference between exhaust fan and ventilation fan
A12:A ventilation fan brings fresh air into a space, improving circulation, while an exhaust fan removes stale, humid, or polluted
air, typically from kitchens or bathrooms. The key difference lies in airflow direction: ventilation fans pull outdoor air in,
while exhaust fans push indoor air out axial fan
Isabella Clark –
Excellent airflow distribution across our facility. Noise is low, energy consumption reasonable, and maintenance intervals are long. Overall very satisfied with Longwell.
Thomas Brown –
Centrifugal fans performed very well in our HVAC system. Measured airflow is 3100–3300 m³/h, and vibration is minimal. Installation was straightforward, and Longwell units feel robust and dependable.
Amelia Scott –
Fans provide strong, consistent airflow. Setup required some adjustments on the ducting, but once aligned, they operate quietly and reliably. Staff noticed improved ventilation immediately.