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

A technology for electronic equipment and cooling fans, which is applied to structural components of electrical equipment, cooling/ventilation/heating transformation, mechanical equipment, etc. It can solve the problems of large air volume, high noise, and high back pressure, and achieve large air volume and reduce aerodynamic noise , the effect of improving efficiency
CN112128124AInactive Publication Date: 2020-12-2510TH RES INST OF CETC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
10TH RES INST OF CETC
Publication Date
2020-12-25
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Claims

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