Air-blast fan

Abstract

The invention relates to a blower fan, which comprise an upper cover and a base, wherein said upper cover has wind inlet; the base is surrounded with side walls; one side wall has wind outlet; at least one first clamper group is between the upper cover and the base; the first clamper group has clamping holes at the top of side wall; the open groove under the clamping hole is through outside the side wall; the clamping hole is through to the open groove; the upper cover has the hook leg at the part relative to the clamping hole to clamp the clamping hole. The invention has simple detachment, without resonance, while it's ventilate efficiency is better.

Description

technical field [0001] The invention relates to a blower fan, which is arranged inside a notebook computer, and the blades of the fan motor guide the air flow to circulate, so as to provide heat dissipation for the system environment. Background technique [0002] The structure of the conventional blower fan is as follows: figure 1 As shown, it includes an upper cover 10, a base 20 and a fan motor 30, wherein the upper cover 10 is provided with an air inlet 11, the periphery of the base 20 is surrounded by side walls, and one of the sides forms an air outlet side 21, The fan motor 30 is mounted inside the base 20 . After the upper cover 10 and the base 20 are combined, they are fixed by a plurality of screws 12, so that when the fan motor 30 rotates, the airflow can be guided into the air inlet 11 and blown out from the air outlet 21 to provide heat dissipation for the system environment. [0003] Because the thickness of the upper cover 10 of the above-mentioned blower fa...

AI Technical Summary

Problems solved by technology

[0006] Compared with the former, the fastener of the second type of conventional blower fan saves space compared with the screw of the first type of conventional blower fan, and is more convenient to assemble and disassemble, but it also leads to the problem that the upper cover is easy to loose, because no matter it is There are differences in processing accuracy between the buckle seat and the hook feet and the allowable deformation of the injection product, so there must be a gap between the buckle seat and the hook feet. This gap is the reason for the looseness of the upper cover, and the fan The high-frequency vibration generated by the motor operation will cause the upper cover to resonate and generate noise

[0007] In addition, if image 3 As shown, the two sides of the air outlet side 21 of the second type of conventional blower fan must increase the wall thickness of the place in order to install the buckle 22, and because the outline of the blower fan must match the system, it is impossible to change the outline. The only way to do this can only be to reduce the internal space of the blower fan itself, so the buckle seats 22 on both sides of the air outlet side 21 are set inwardly to form a retracted shape, so that after the airflow flows through this place, it will be formed between the walls. The vortex phenomenon affects the smoothness of the blower fan's air discharge and the air outlet efficiency

[0008] Therefore, in order to completely solve the problems of easy loosening and resonance of the upper cover of the blower fan, and improve the smoothness and efficiency of the air outlet channel of the blower fan, the structure of the blower fan must be improved.

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