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Date: 2024.06.03
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Frameless fans, also known as axial fans.Axial fan is a kind of power machine based on axial flow, which is mainly used in ventilation, air conditioning, cooling and other fields. In large buildings, subways, highways and other public places, axial fans can provide good ventilation to protect people's living and working environment. In industrial production, the axial fan is also used for cooling, ventilation, dust removal and other workplaces to improve production efficiency and product quality.
Frameless fans through the impeller generated by the fluid power and dynamic pressure energy converted to static pressure energy, thereby generating airflow. Its working principle can be explained by Bernoulli's law and the continuity equation. Bernoulli's law states that as the gas passes through the impeller's flow path, the gas velocity increases and the pressure decreases, resulting in airflow. The continuity equation, on the other hand, ensures the conservation of gas mass.
The impeller of an axial fan usually consists of multiple blades, whose different shapes and numbers can be used to regulate the flow characteristics of the airflow. For example, the performance of oblique blade and straight blade impellers are different, respectively, for different wind speed and pressure range.
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Axial fans are characterized by high efficiency, low noise, energy saving and so on. Generally speaking, the conversion efficiency of axial fans is as high as about 70%, and the noise is relatively low. In addition, axial fans can be designed with a series of optimization measures, such as streamlined impellers and aerodynamic structures, to further improve their efficiency and performance.
1. What is the difference between frameless fans and centrifugal fans?
A: Axial fans and centrifugal fans are both airflow generating devices, but their working principles and impeller structures are different. The axis of the impeller of an axial fan is parallel to the direction of airflow, while the axis of the impeller of a centrifugal fan is perpendicular to the direction of airflow, and the characteristics of the airflow produced by the two are different.
2. What are the installation requirements for frameless fans?
A: The installation of axial fan should try to avoid bending and blocking of pipes to ensure smooth airflow. In addition, sufficient clearance should be retained between the impeller and the duct to avoid friction and vibration.
Frameless fans is a commonly used fan, widely used in ventilation, air conditioning, cooling and other fields. Its working principle is to utilize the fluid power and dynamic pressure energy generated by the impeller to be converted into static pressure energy, thus generating airflow, which has the advantages of high efficiency, low noise, energy saving and so on. During installation, attention should be paid to the smoothness of the pipeline and the clearance between the impeller and the pipeline to ensure the normal operation of the axial fan.
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