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An axial impeller fan is a fan with blades mounted around a shaft, which rotates to create airflow. The design of the axial impeller fan will vary depending on the application or industry. There are different types of axial fan impeller manufacturers.
Tube Axial Fans
According to axial fan impeller manufacturers, tube axial fans are commonly used in industrial facilities. The design is a long cylinder housing with an axial fan mounted inside. The housing enables the fan to move a large volume of air while putting in a little bit of energy, sometimes known as a great deal of pressure drop.
Vane Axial Fans
The Vane axial fan has stator vanes integrated into the fan housing after the impeller. The stator vanes guide the air and reestablish the airfoil shape. The advantage of Vane axial fans is that they can increase the efficiency of the motor driving the impeller. Another benefit of vane axial fans is that they can lower motor size for a given duty point.
Crossflow Axial Impeller Fans
Crossflow axial impeller fans operate by drawing air in parallel to the fan's axis, which discharges air perpendicularly to the fan's mounting surface. A common feature of crossflow fans is that the impellers are long and cylindrical. Nevertheless, the design and dimension will vary depending on the application or industry.
Material
The axial flow fan impeller is generally made of plastic, metal, aluminum, etc. The specific materials can be selected according to the use environment and needs.
Size
The sizes of the axial fan impellers include diameter, height, etc. The diameter of the fan impeller usually ranges from 10cm to 1m. The height ranges from 5cm to 60cm. Custom sizes can be provided upon request.
Shape
Usually, there are disk shape, spherical shape, and other shapes of axial fan impellers. The disk shape impeller is the most popular choice. It can be divided into straight blade type, slant blade type, and semi-slant blade type disk impellers. For example, the straight blade disk model works efficiently in a free stream, and the slant blade disk model provides better performance at a high flow volume. Spherical axial impellers are mainly used in the plasma or chemical field.
Static pressure
The static pressure performance of axial fan impellers usually ranges from 500Pa to 3000Pa, which is suitable for working in different environments.
In addition, there are some other specifications of the axial fan impeller, such as power, noise, speed, etc.
Regular inspection
It is suggested to check the impeller parts of the axial fan regularly. Users can check the overall performance of the fans, such as whether there is any damage or displacement of the blades and whether the bearings are lubricated.
Cleaning
The surfaces of axial fan impellers are always dusty. Frequent cleaning can ensure the airflows are not blocked. Cleaning solutions should be selected according to the materials of the impellers, while the cleaning methods are usually the same. The first thing to do is to cut off the power supply and the next step is to use a brush to clean the dust off the surfaces of the impellers. Wet cleaning can also be used. That is to soak a clean towel in the cleaning solution and use it to wipe the surfaces of the impellers carefully.)
Lubrication
Lubricate the bearing and moving parts of the axial fan impeller regularly to ensure smooth and high-performance operation.
Impellers in axial fans are used in various applications. They can be used in the following scenarios:
Cooling fans in computer cases
Axial impeller fans keep components in the computer case from overheating. They move cool air through the case to ensure every part works well. This happens, for instance, when a person plays graphic-based games, so the computer is very demanding. Different-size axial fans are used based on how big the case is.
Car radiator cooling
Axial impeller fans are put behind the radiator. When the engine gets hot, the fans turn on. The fans move air through the radiator fins. Airflow takes away heat from the coolant flowing inside the radiator. The coolant then cools the car engine. The fans also cool other parts of the car.
Air conditioning system
An axial impeller fan is the main fan inside an air conditioner. It takes indoor air, passes it through the cooling coils, and pushes back cool air into the room. This same process happens to outdoor air when the AC works to cool the inside space. Different size axial fans are used based on whether the AC is a window, split, or duct one.
Refrigerator condenser
An axial impeller fan is the main fan in the rear of a refrigerator. The fan pushes air over the condensing coils. The airflow takes away heat from the coils. The heat leaves the refrigerant inside the coil. This allows the coil to go on absorbing heat from the fridge. The process helps keep food and drinks in the fridge cool.
Drone flight controller
A drone flight controller has to be kept cool so it can work well. An axial impeller cooling fan is directly mounted onto the flight controller board. It pushes away heat generated by the processor and other parts of the board when the board gets hot.
There are several factors to consider when selecting an axial flow fan impeller for one’s project, including:
Q1: Do axial impeller fans have filters?
A1: No. Usually, there are no filters in impeller fans. This is because filters restrict airflow. Impeller fans are designed to exhaust or intake the maximum amount of air. Installing a filter in an impeller fan would interfere with its intended purpose.
Q2: Can axial fans be stackable?
A2: Yes, the axial impeller fans can be stacked. Stacking fans increases the pressure in the system. Higher pressure means that more airflow will be produced. Stacking axial fans costs less than purchasing a larger fan. Additionally, the size of the stack can be more compact than a bigger fan.
Q3: Are axial fans shock mounted?
A3: Yes, the axial impeller fans are shock mounted. This is done to minimize the vibrations from the fans. The shock mount absorbs any vibration from the fan, thus, preventing it from transferring onto the surface or equipment it is mounted to. This makes shock-mounted axial fans suitable for mounting on sensitive electronic equipment.
Q4: Are axial impeller fans water resistant?
A4: Yes. Some manufacturers make water-resistant axial impeller fans. They do this by applying a hydrophobic coating on the housing of the fan. This coating repels water thus, protecting the internal electronic components of the fan. It's worth noting that the water-resistant coating does not make the fan water-proof. Therefore, your on ly apply the coating to water splashes and not submersion in water.
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