The cross flow blower uses a relatively long barrel-shaped fan impeller to work. The diameter of this barrel-shaped fan blade is relatively large. Because of the large diameter, a relatively low speed can be used on the basis of ensuring the overall air circulation. Thus, noise due to high-speed operation is reduced.
Under the same suitable working conditions, the higher the rotational speed of the cross flow blower, the easier it is to generate surge, and the longer the surge period is. When surge occurs, the indication at high speed is stable but its value is small, at this time, the inside of the fan is heavy and the noise is dull;
cross flow blower are also known as local fans. It is a kind of fan commonly used by industrial and mining enterprises. It is different from ordinary fans. Its motor and blades are all in a cylinder and the shape is a cylinder. For local ventilation, easy installation and ventilation. The ventilation effect is obvious and safe, and the wind can be used to supply air to the designated area.
The characteristic of the cross flow blower is that the fluid flows through the fan impeller twice, the fluid flows in radially first, and then flows out radially, and the inlet and exhaust directions are in the same plane. The exhaust gas is evenly distributed along the width of the fan. Due to its simple structure, small size and high dynamic pressure coefficient, cross flow blowers can reach long distances and are widely used in laser instruments, air conditioners, air curtain equipment, dryers, hair dryers, household appliances and grain combine harvesters.
The China Cross flow blower uses a relatively long barrel-shaped fan impeller to work. The diameter of this barrel-shaped fan blade is relatively large. Because of the large diameter, a relatively low speed can be used on the basis of ensuring the overall air circulation. , thereby reducing the noise caused by high-speed operation;
High-quality Cross flow blowers are mainly composed of impeller, air duct and motor. The impeller material is generally aluminum alloy or engineering plastic. High-quality Cross flow blower aluminum alloy impeller has high strength, light weight, high temperature resistance, and can maintain stable operation without deformation; plastic impeller is injection molded by mold and then ultrasonically welded.
In the Cross flow blower in china, when the rotational speed is high and the vent area is large, the control force of the eccentric vortex is enhanced, the gas in the cross-flow fan cannot be discharged or inhaled normally, the test system has abnormal conditions, and the cross-flow fan has a surge phenomenon, and there is a surge Vibration period, its specific performance is:
Cross flow blower in china have very complex internal structures. Although the impeller is symmetrical in the circumferential direction, the airflow is asymmetrical, and its relative and absolute velocity fields are unstable.
The biggest feature of theCross flow blower in china is that the fluid flows through the fan impeller twice, the fluid flows in in the radial direction and finally flows out in the radial direction, the intake and exhaust directions are in the same plane, and the exhaust gas is evenly distributed along the width of the fan.
Cross flow blower in china are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial furnaces; air conditioning equipment and household appliances. cooling and ventilation; drying and selection of grain; air source of wind tunnel and inflation and propulsion of hovercraft, etc.