Air outlet flow guiding structure of radiating fan

Abstract

In this structure, a vent hole of the shell forms a pedestal and several ribbings. The pedestal bears the weight of a turbofan, the ribbings are connected with the shell and pedestal. On each of the ribbing, the first radial diversion channels, the first ringed diversion channels and second radial diversion channels are settled. When the turbofan operating, the airflow is guided through and wind pressure is increased.

Description

technical field [0001] The present invention relates to a flow guiding structure of an air outlet, in particular to a method in which the ribs of the air outlet of a heat dissipation fan form several radial flow guiding parts and several annular flow guiding parts, so as to guide the flow direction of the airflow, increase the wind pressure and The air outlet guide structure of the cooling fan reduces wind shear noise. Background technique [0002] The casing structure of a known cooling fan, as shown in FIG. 1 , includes a casing 10 , an air inlet 11 , an air outlet 12 , a base 13 and several ribs 14 . Two sides of the casing 10 form the air inlet 11 and the air outlet 12 . The base 13 is stably formed at the air outlet of the housing 10 by the rib 14 for fixing a stator (not shown) and combining with a fan wheel (not shown). In this way, when the fan wheel is in operation, the cooling fan can suck the airflow through the air inlet 11 and discharge it through the air outl...

AI Technical Summary

Problems solved by technology

[0003] Although the above-mentioned known heat dissipation fan does have a heat dissipation function, the air flow of the heat dissipation fan can only be discharged along the axial direction of the housing 10 through the air outlet 12 in order to dissipate heat directly below the air outlet 12.

However, if the object to dissipate heat is not located directly below the air outlet 12, the object to dissipate heat will not be able to receive most of the heat dissipation airflow, which may cause uneven heat dissipation and affect the actual heat dissipation efficiency

On the other hand, when the object to dissipate heat cannot be selected to be combined directly below the base 13 or the periphery of the air outlet 12 due to limited assembly space (such as in a notebook computer), or when the object to dissipate heat has If the size is too large and cannot be completely directly under the cooling fan, it will seriously affect the actual cooling efficiency

Furthermore, when the air flow passes through the ribs 14, it is also likely to be accompanied by turbulence or turbulence, which will generate noise and reduce heat dissipation efficiency.

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