Axial fans
Axial fans convey air for heat or cold exchange at a shallow installation depth. The EC version of axial fans enables considerable energy savings and is characterised by a low noise level and high efficiency. They are particularly suitable for flow through heat exchangers and are frequently used in ventilation, air conditioning and refrigeration technology, in wind turbines and in mechanical engineering as well as in the automotive industry.
Product overview Axial fans
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What is an axial fan?
Axial fans are an important component in modern ventilation, cooling and air conditioning technology. They move large volumes of air along the axis of the fan.
How does an axial fan work?
Axial fans move air axially. The impeller design and the performance of the motor play a central role. Thanks to technological advances in motor control and blade design, axial fans are now even more efficient and adaptable. They are therefore suitable for a wide range of applications.
Basic principle
The basic principle of an axial fan is based on the movement of air in an axial direction, parallel to the axis of rotation of the fan. This design allows air to be drawn in via a central axis and expelled along the same axis. The efficiency and performance of an axial fan depend largely on the design of the impellers and the motor power.
Axial impeller and air flow
The impeller of an axial fan catches the air as the rotor turns and pushes it forwards. The aerodynamic shape of the blades minimises air resistance and maximises air flow. The number, shape and angle of the blades can vary depending on the performance requirements and optimise efficiency.
Motor and speed control
The motor of an axial fan drives the impeller and determines the speed of the air flow. Modern axial fans are often equipped with motors that enable variable speed control. Efficient speed control not only contributes to energy savings, but also enables quieter operation.
Areas of application and efficiency
Axial fans are used in many applications, from general building ventilation to the cooling of electronics and specific industrial processes. They are efficient and therefore a favoured choice for systems with high air requirements. By selecting the right axial fan, users can achieve an optimum balance between air performance, energy consumption and noise levels.
How are axial fans constructed?
The design of axial fans is decisive for their performance and variety of applications. Thanks to the combination of efficient motors, aerodynamically optimised impellers and precise control options, they offer an effective solution for moving large volumes of air. The differences in design and technical specifications make it possible to find the right axial fan for almost every requirement in ventilation and air conditioning technology.
The structure of an axial fan can be divided into the main components
Axial impeller, Housing or protective grille and nozzle motor as well as electronics and speed controllerbe subdivided. There are also a large number of design variations within the axial fan category, which differ in terms of their application and performance.
Axial blade
These are the centrepiece of every axial fan. They are arranged around a central axis and rotate to move air in an axial direction. The specific shape and number of blades significantly determine the performance and efficiency of the fan.
Enclosure / Nozzle
The enclosure or nozzle surrounds the impeller and is used to direct the air flow and increase efficiency. On some models, the housing or nozzle is designed to minimise air resistance and ensure optimum air flow.
motor
The motor drives the impeller and is decisive for the speed and performance of the fan. Modern axial fans are often equipped with energy-efficient motors that enable precise speed control.
Speed controller
Many axial fans have integrated electronics, e.g. for speed control, which allow the air speed to be adapted to the respective requirements. This enables flexible use and can contribute to energy savings.
Design variations
There are different design variations of axial fans that differ in their application and performance.
Blade angle / blade position
The angle of the axial blades can be varied to generate different air volumes and pressure ratios. A steeper angle leads to a higher air pressure, while a flatter angle moves larger volumes of air.
Number of blades
The number of blades on an impeller influences both the efficiency and the noise development of the fan. Fewer blades often lead to higher efficiency, while more blades can generate a more even airflow.
Materials
The choice of material for impellers, housings and nozzles varies depending on the application. It can range from plastics and metals to composite materials. The choice of material influences the durability, weight and corrosion resistance of the fan.
How are axial fans installed?
The correct installation of axial fans is crucial for their efficiency and longevity. Proper installation is crucial to fully utilise the benefits of axial fans and ensure efficient air circulation in different environments.
Selection of the mounting or installation location
The choice of installation location is decisive for the performance of the axial fan. The installation location should be selected so that the air flow is not obstructed by nearby objects and a sufficient supply of fresh air is ensured. It is important that the fan is installed in an environment that is free from dust and other contaminants to prevent impairment of performance and premature wear. However, there are protective measures or protection classes for the axial fans for robust use in dusty or damp conditions.
Fastening and securing
Axial fans must be mounted firmly and securely in order to minimise vibrations and noise pollution. Suitable fastening elements and damping materials reduce the transmission of vibrations to the structure. The fan should be aligned horizontally to ensure optimum performance and an even load on the bearings.
Electrical connections
The electrical connections must be made correctly in accordance with the manufacturer's technical specifications and the applicable safety regulations in order to ensure safety and minimise the risk of damage to the fan or other system components. We recommend that you commission a qualified electrician to carry out the installation.
Checking the air flow
After installation, the air flow and the performance of the axial fan should be checked. Check whether the fan moves the expected air volume and whether turbulence or undesirable air flows occur. It may be necessary to make adjustments to the installation location or the alignment of the fan in order to achieve optimum performance. Please contact us, we can advise you on the air flow.
What are the advantages of axial fans?
Due to their
Efficiency, Compactness, Versatility, low noise emission and durabilitya preferred choice in many ventilation and cooling applications.
With the right choice of axial fan, users can benefit from improved air quality, a pleasant indoor climate and efficient operation.
High efficiency in air movement
Axial fans are known for their ability to move large volumes of air at low pressure. They are particularly efficient for applications where even and extensive air circulation is required. The design of the impellers enables optimum air flow and minimises energy consumption, which contributes to the energy efficiency of the overall system.
Compact design
Another advantage of axial fans is their compact and flexible design. Compared to other fan types, axial fans require less space and can be easily integrated into various systems. This is particularly advantageous in applications with limited space or specific installation requirements.
Versatility
The versatility of axial fans is demonstrated by their wide range of applications. They are used in various areas such as building technology, electronics cooling, agriculture, industrial production, cooling/refrigeration technology and IT. They can be customised to meet specific requirements in terms of air volume flow, pressure and ambient conditions.
Low noise emission
Modern axial fans are designed to operate very quietly. By optimising the blade design, material, surface structure and coating, the noise level during operation is significantly reduced. In addition, the use of modern motors reduces the noise level even further, making them ideal for applications in noise-sensitive areas such as office buildings, residential areas or hospitals.
Low maintenance and durable
The design of axial fans not only ensures efficient, but also reliable and low-maintenance operation. High-quality materials and precise manufacturing processes ensure a long service life for the fans.
What axial fans are there?
The axial fan programme from ebm-papst is just as versatile as the areas of application for axial fans.
HyBlade
The HyBlade® from ebm-papst sets standards in efficiency and noise reduction thanks to its innovative hybrid blade technology. The air flow rate ranges from 500 m³/h to 60,000 m³/h, with a back pressure of 110 Pa to 350 Pa.
AxiTop
AxiTop® is a diffuser attachment from ebm-papst that significantly improves the efficiency of axial fans thanks to its optimised airflow. The diffuser is suitable for fan sizes 800 mm, 910 mm and 1250 mm.
AxiCool
The AxiCool® fan is ebm-papst's solution for cooling applications that require compact, efficient and quiet cooling. The air flow rate ranges from 3,000 m³/h to 25,000 m³/h, with a back pressure of 40 Pa to 300 Pa.
AxiBlade
The AxiBlade® offers higher performance and higher efficiency, with a lower noise level, than the proven HyBlade axial fans. The air flow rate ranges from 4,500 m³/h to 35,000 m³/h, with a back pressure of 50 Pa to 380 Pa.
EC medium pressure
EC medium-pressure fans from ebm-papst offer high performance with low energy consumption and are ideal for demanding applications. The air flow rate ranges from 15,000 m³/h to 75,0000 m³/h, with a back pressure of 50 Pa to 550 Pa.
Fans and iQ-motors
Fans and iQ motors from ebm-papst stand for intelligent, energy-efficient solutions that can be used in a wide range of cooling technology applications. The air flow rate ranges from 160 m³/h to 1,280 m³/h, with a motor speed of 1,300 rpm and 1,550 rpm.
AxiEco
Der AxiEco Ventilator von ebm-papst ist ein innovativer Axialventilator, der durch seine optimierte Aerodynamik und Effizienz in verschiedenen Anwendungsbereichen überzeugt. The air flow rate ranges from 500 m³/h to 12,500 m³/h, with a back pressure of 70 Pa to 720 Pa.
What is the difference between axial fan, axial ventilator and axial blower?
Although the terms axial fan, axial ventilator and axial blower are often used interchangeably, they refer to devices with different specifications and areas of application. The choice between these devices should be made based on the specific requirements of the application, such as the required air volume, the pressure requirement and the operating environment. By understanding the differences, the right decisions can be made to maximise the efficiency and effectiveness of ventilation systems while minimising energy consumption.
Axial fans
Axial fans are known for their ability to move air efficiently and parallel to the axis of rotation. This makes them an ideal choice for general air circulation in less demanding environments.
Air movement: The air is moved parallel to the axis of rotation. Air flow rate: The air flow rate is high at a relatively low pressure. Construction: Efficient air movement and minimised noise development. Application: Air circulation in residential buildings, offices and light industrial environments, electronics and switch cabinet cooling, IT sector. Noise level: Low, ideal for low-noise applications. Suitability: Suitable for environments where low-noise operation is required.Axial fans
Axial fans extend the basic function of axial fans with the ability to move larger volumes of air and are specially designed for more demanding industrial applications.
Air movement: Parallel to the axis of rotation Air flow rate: Larger air volumes compared to axial fans Application: More specific, more demanding industrial requirements (e.g. industry, large commercial buildings, smoke extraction systems, refrigeration systems) Construction: Variable speed control, aerodynamically optimised blades Noise development: Variable, depending on design and application Suitability: For demanding industrial applications, larger air volumes and higher resistancesAxial blowers
Axial blowers are at the forefront of axial fan technology and have been specially developed for extremely high air volumes and pressure requirements in robust industrial applications.
Air movement: Parallel to the axis of rotation Air flow rate: Very high, for applications with high air volume and high pressure Application: Large industrial applications (e.g. mining, agriculture, industrial drying processes) Construction: More robustly built, designed for more extreme conditions Noise development: May be higher, depending on design and area of application Suitability: For more extreme conditions and applications that require strong airflow over long distances or through complex systemsTo summarise, axial fans are designed for general air circulation in less demanding environments with their efficient and quiet operation. Axial fans offer higher performance for specific industrial applications by moving larger volumes of air and utilising advanced design features. Axial blowers are designed for extremely high air volume and pressure requirements in rugged industrial environments to provide powerful airflow over long distances or through complex systems.