Popularization Of Cross Flow Fan Definition

Cross flow fan is a small high-pressure centrifugal fan with forward multi blade blades. Gas enters the impeller from one side of the outer edge of the rotor and then exits from the other side through the impeller. The gas is subjected to the force of the blades twice inside the impeller. Under the same performance conditions, its size is small and its speed is low. Compared with other types of low-speed fans, cross flow fans have higher efficiency. Its axial width can be arbitrarily selected without affecting the flow state of the gas, and the gas still maintains uniform flow throughout the entire rotor width. Its outlet section is narrow and long, suitable for installation in various flat equipment for cooling or ventilation.
brief introduction
Cross flow fan is a small high-pressure centrifugal fan with forward multi blade blades. Gas enters the impeller from one side of the outer edge of the rotor and then exits from the other side through the impeller. The gas is subjected to the force of the blades twice inside the impeller. Under the same performance conditions, its size is small and its speed is low.
characteristic
Compared with other types of low-speed fans, cross flow fans have higher efficiency. Its axial width can be arbitrarily selected without affecting the flow state of the gas, and the gas still maintains uniform flow throughout the entire rotor width. Its outlet section is narrow and long, suitable for installation in various flat equipment for cooling or ventilation.
performance
The performance parameters of a ventilator mainly include flow rate, pressure, power, efficiency, and rotational speed. In addition, the size of noise and vibration are also the main technical indicators of ventilation fans. Flow rate, also known as air volume, is expressed as the volume of gas flowing through the fan per unit time; Pressure, also known as wind pressure, refers to the pressure rise of a gas in a fan, which can be divided into static pressure, dynamic pressure, and total pressure; Power refers to the input power of the fan, which is the shaft power. The ratio of the effective power of a fan to the shaft power is called efficiency. The total pressure efficiency of the ventilator can reach 90%.
Future development
The future development of ventilation fans will further improve their aerodynamic efficiency, device efficiency, and usage efficiency, in order to reduce electricity consumption; Replace large centrifugal fans with axial flow fans with adjustable blades; Reduce fan noise; Improve the wear resistance of the impeller and casing of smoke exhaust and dust exhaust fans; Realize variable speed regulation and automatic regulation.