Air-cooled heat-dissipation axial flow cooling fan for electronic equipment

Abstract

The invention discloses an air-cooled heat-dissipation axial flow cooling fan for electronic equipment, and aims to provide an axial flow fan which is high in efficiency, low in vibration, large in air volume, high in back pressure and low in noise. According to the technical scheme, a machine shell is a double-funnel-shaped inclination angle air duct machine shell in which a backward air draft air duct is wide in the front end, narrow in the middle and wide in the rear portion, an inclination angle inner wall is formed, and all middle sections change according to a linear rule; blades are offront bending edge types; axial flow sweeping type blades are formed by suction curved surfaces with upper inclination angles of at least -14 degrees and pressure curved surfaces with lower inclination angles of at least -11 degrees; spiral radian flow guide stationary blades matched with the air flow direction of the fan and the air duct convert kinetic energy generated by winding back airflow ofan impeller into pressure; the inclination angle inner wall of the machine shell prevents blade tops of the fan blades from leaking; and the pressure of the inner wall of the machine shell is cut toform forced air flow with the axial flow sweeping type blades, so that separation of boundary layers of the fan blades is prevented, and the air flow is sent out.

Description

technical field [0001] The invention relates to a high-performance fan with high reliability and large volume of air source for air-cooling and heat dissipation of electronic equipment, which is oriented to various loading platforms such as airborne, ship-borne, and vehicle-mounted, and has low noise, especially a high-performance fan Large air volume and low noise axial flow cooling fan. Background technique [0002] The fan is a mechanical device that transports gas and converts the mechanical energy input by the prime mover into gas kinetic energy and pressure energy to output fluid. Axial flow fans have been widely used in various industries for a long time because of their simple structure, convenient use, low noise, large flow rate, and remarkable exhaust ventilation effect. The axial flow fan is mainly composed of the fan impeller and the casing. Generally, the blade handle of the low-noise axial flow fan adopts a flange-type installation structure, and the outer su...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing high-volume axial flow fan with high noise, and provide an air-cooled and heat-dissipating axial flow fan for electronic equipment with high efficiency, small vibration, large air volume, high back pressure and low noise

Images