Micro Cooling Fan
A cooling fan and miniature technology, which is applied in cooling/ventilation/heating transformation, components of pumping devices for elastic fluids, non-variable pumps, etc., and can solve the problem of large configuration space for three-phase motors and framed processes Complex drive circuit heat dissipation and other issues
Active Publication Date: 2016-05-04
IND TECH RES INST
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Problems solved by technology
However, in the manufacturing process of the above-mentioned heat dissipation fan, it is necessary to provide a bearing space on the inner wall of the frame to place the drive circuit. There are problems in the complex process of the frame and the need to consider the heat dissipation of the drive circuit.
[0005] In addition, when cooling fans are applied to Internet terminals, the cooling fans need to be miniaturized, but in the process of miniaturization of cooling fans, in order to reduce the power consumption of cooling fans, it is necessary to introduce a three-phase motor structure. However, three-phase The configuration space required by the motor is larger than that of a single-phase motor, so there is a problem of whether there is any extra space for the miniature cooling fan to configure the drive circuit
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[0054] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:
[0055] Please refer to Figure 1A and Figure 1B , are respectively the three-dimensional exploded diagram and the combined diagram according to the first embodiment of the present invention. The micro cooling fan 100 includes a housing 102 , a magnetic block 104 , a main circuit board 106 , a bearing 108 and a fan wheel 110 . Wherein, in this embodiment, the housing 102 may be composed of two sub-housings, but it is not limited thereto. As can be seen from the figure, the housing 102 is composed of an outer frame 112 and an upper cover 114 . The casing 102 has an air inlet surface 116 and an air outlet surface 118 opposite to each other, an airflow channel 120 , an accommodating space 122 , a shaft seat 124 , a first inner surface 126 and a first outer surface 128 . The air inlet surface 116 can be arranged on one side of ...
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A miniature cooling fan includes a housing, a fan wheel and a main circuit board. The casing has an accommodating space, a first inner surface and a first outer surface, and the fan wheel has a plurality of fan blades and is arranged in the accommodating space. The main circuit board has a stator and a driving circuit, the stator and the driving circuit are electrically connected, and the stator is arranged on the first inner surface, and the driving circuit is arranged on the first outer surface, so that the micro fan motor housing and the driving circuit are integrated delicate structure. Wherein, the first outer surface is located on the side of the housing relative to the first inner surface or the first outer surface. Therefore, the driving circuit of the miniature cooling fan is arranged on the first outer surface, which reduces the wind resistance of the fan blades, relatively increases the air volume of the miniature cooling fan, and further improves the cooling effect of the miniature cooling fan.
Description
technical field [0001] The invention relates to a miniature heat dissipation fan, in particular to a miniature heat dissipation fan in which a drive circuit is arranged on the outer surface of a casing to realize the integrated structure of the micro fan motor casing and the drive circuit. Background technique [0002] In recent years, electronic devices are equipped with various electronic components, such as central processing units and power supplies. Since the electronic components will generate a lot of heat when the electronic device is in operation, it is necessary to install a cooling fan to remove the heat, so as to prevent the electronic components from being overheated and shorten the service life of the electronic components. [0003] According to the DC fan motor structure disclosed in Taiwan New Patent Announcement No. 247005 "DC Fan Motor Structure", the electromagnetic effect of the stator device is controlled by the control circuit device, so that the rotor ...
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IPC IPC(8): F04D25/08F04D29/40F04D29/58H05K7/20
Inventor 黄中隽王建昌梁坤亿
Owner IND TECH RES INST