Multi-groove multi-stage broadband outward-rotating alternating-current heat dissipation axial flow fan

Abstract

The invention relates to a multi-groove multi-stage broadband outward-rotating alternating-current heat dissipation axial flow fan. The multi-groove multi-stage broadband outward-rotating alternating-current heat dissipation axial flow fan comprises a machine shell, wherein a fan and an alternating-current motor used for driving the fan are arranged at the inner side of the machine shell, an air outlet and an air inlet which are formed in the two axial sides of the fan respectively are formed in the machine shell, and a rotating ring arranged at the inner side of the air outlet and rotationally connected with the machine shell is arranged on the machine shell; a plurality of triangular prisms are evenly distributed at the inner side of the rotating ring in the circumferential direction, the bottom faces of the triangular prisms are horizontally arranged, any side face of each triangular prism is perpendicular to the radial direction of the rotating ring, and any side face of each triangular prism is in coplanar sliding connection with the other side face of the adjacent triangular prism at one side, so that the triangular prisms are sequentially in sealed sliding connection throughthe adjacent side faces, and a quasi-circular polygonal channel is formed; and the triangular prisms are in sliding connection with the machine shell on the horizontal plane, and the triangular prisms are hinged to the rotating ring through connecting rods, so that when the rotating ring rotates, the triangular prisms are driven by the connecting rods to slide. According to the multi-groove multi-stage broadband outward-rotating alternating-current heat dissipation axial flow fan, the diameter of an air duct can be changed in real time, it is guaranteed that air flow in the fan is in a laminar flow state, and stall is prevented.

Description

technical field [0001] The invention relates to an AC fan, in particular to a multi-slot, multi-series, broadband, external-rotation, AC heat-dissipating axial flow fan. Background technique [0002] The main function of the fan is to ventilate and dissipate heat. Under normal use conditions, its performance is stable, and the noise and vibration during operation are relatively small. There is a lot of turbulent flow and the air pressure changes erratically. Therefore, the high-altitude working environment has a greater impact on the impact of the fan. Especially during the maneuvering process of the aircraft, the instantaneous pressure change can easily cause the fan to stall or cause surge, so that the fan cannot work normally. , will not only seriously affect the normal use of the airborne radar, but also cause mechanical damage to the wind turbine itself, which in turn will cause the wind turbine to malfunction and bring potential safety hazards. Contents of the invent...

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, in order to make up for the technical deficiencies existing in the prior art, the present invention provides a multi-slot, multi-series, wide-frequency, external-rotating AC heat-dissipating axial flow fan to solve the problem that the existing fan is difficult to operate effectively in a complex working environment and is easy to cause failure problem

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