Small-sized blowing fan

Abstract

A small blower fan comprises a shaft base whose center fixed with a rotary shaft and whose outside fixed several vanes and magnets, with each vane arranged in regular radiation, magnets located within the boundary covered by the vanes in rotation, and the height of the vane must be over thirty percent of the total height of the magnet. It is not only small and thin, it can meet the wind blowing volume and heat radiation requirement.

Description

technical field [0001] The invention relates to a small blower fan, especially a shaft seat with a rotating shaft in the center, several blades and magnets fixed outward on the outer periphery, and the magnets are placed under each blade in the shape of a plate, which can achieve the purpose of miniaturization and thinning Small blower fan. Background technique [0002] Referring to Fig. 1, a conventional blower fan includes a fan wheel 10, a magnet 11 is fixed on the inner wall of the fan wheel 10, and a protruding shaft seat 12 is provided at the center, and a rotating shaft 13 is fixed on the shaft seat 12; [0003] In addition, the outer peripheral surface of the fan wheel 10 extends outwards with a spoke plate 14, and the spoke plate 14 is provided with several radially uniformly distributed blades 15; therefore, when the blower fan rotates, it can drive and attract the airflow above the fan wheel 10. , and blow out to the side through each blade 15, so as to provide h...

AI Technical Summary

Problems solved by technology

[0004] However, with the precision and complexity of integrated circuit layout, especially for thin and miniaturized electronic system equipment, the complex circuit design makes the temperature of the internal microchip rise sharply. Increasing the heat dissipation area, or using heat pipes to transfer heat energy, are no longer enough to solve the problem of rapid heat accumulation in today's systems; however, the above-mentioned conventional blower fans have difficulties in miniaturization and thinning, so they cannot be applied Thin electronic system equipment

[0005] If the thickness of the above-mentioned conventional blower fan is directly reduced, the heat dissipation efficiency of the fan will be directly affected; because, once the overall thickness of the fan wheel 10 is reduced, the space available for the stator configuration inside the fan wheel 10 must be limited, and the fan wheel 10 must be limited. This blower fan cannot use a larger power motor stator coil; moreover, reducing the overall thickness of the conventional blower fan also limits the area of ​​each blade 15, which will inevitably reduce the wind speed and wind pressure of the fan.

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