Turbulence structure of fan frame

Abstract

The invention relates to a fan frame turbulence structure which comprises a frame body, an air inlet side and an air outlet side are arranged on the two sides of the frame body respectively, an airflow channel is formed in the middle of the frame body and penetrates from the air inlet side to the air outlet side, and the airflow channel is provided with a channel inner wall connected with the air inlet side and the air outlet side. The air inlet side is provided with an inlet communicated with the air flow channel, the inlet is provided with a fragmentation area located between the air inlet side and the inner wall of the channel, the fragmentation area comprises a plurality of fine fragmentation units which are densely distributed, and a plurality of gaps are formed among the fine fragmentation units to be communicated with the air flow channel. An air flow sucked from the air inlet side is crushed by the plurality of fine crushing units, so that a part of the air flow is crushed and dispersed into gap turbulent flow through gaps among the plurality of fine crushing units to enter the air flow channel, and the effect of reducing the noise of the wide band is realized.

Description

technical field [0001] The invention relates to a fan frame, in particular to a fan frame turbulence structure. Background technique [0002] With the improvement of the execution efficiency of electronic components, the demand for heat dissipation has increased rapidly. Therefore, in addition to passive heat dissipation, active heat dissipation (such as a fan) is also used; however, as the temperature increases, the speed of the fan also increases, and its noise also changes. Large, so noise reduction is one of the first priorities of active cooling. The active heat dissipation, such as an axial fan, includes a fan frame and a fan wheel with a plurality of blades pivoted in the fan frame, and the fan frame is provided with an air inlet side and an air outlet side respectively set on the fan frame. sides. However, as the rotational speed of the axial flow fan increases, the noise increases accordingly. [0003] The noise types of the above-mentioned axial fans can be basi...

AI Technical Summary

Problems solved by technology

There are two methods for current industry mainstream to solve the broadband noise: one is to reduce the gap between the tail ends of the plurality of blades of the fan wheel and the inner side of the relative fan frame; A rectification device (such as a waveguide plate) is installed on the wind side, but in these two methods, it is still more obvious to reduce the noise effect by reducing the gap between the tail ends of the plurality of blades of the fan wheel and the inner side of the relative fan frame, but This method needs to strictly control the dimensional tolerances of the plurality of blades in actual manufacturing, and the manufacturing accuracy is relatively high, resulting in a relative increase in cost. Furthermore, because the gap between the tail ends of the plurality of blades and the inner side of the relative fan frame is reduced, it is easy to be stuck by foreign objects. The risk of stalling and burning out of the fan wheel during operation

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