Small high-speed fan

Abstract

The invention provides a small high-speed fan comprising a shell, fan blades, a motor and a bearing. The motor is fixed to the rear end of the shell; the motor is connected with the fan blades throughan output shaft of the motor; the fan blades and the shell are coaxially arranged; the fan blades are arranged at the front end of the shell; the output shaft of the motor is connected with the shellthrough the bearing; and a plurality of heat dissipation channels are formed between the bearing and the shell. According to the small high-speed fan, the plurality of heat dissipation channels are arranged between the bearing and the shell, the front end and the rear end of the shell are communicated through the heat dissipation channels, and flowing airflow fields are formed between the front end and the rear end of the shell through the heat dissipation channels by means of the pressure difference formed by rotation of the fan blades located at the front end; and the motor at the rear endis positioned between the flowing airflow fields. The heat dissipation channels are ingenious in design and small in occupied space, the weight of the fan is further reduced, the high-speed fan keepsthe small boundary dimension, the heat dissipation effect is improved, and the high-speed fan has the advantages of being small in dimension, good in heat dissipation, low in temperature rise and highin efficiency.

Description

technical field [0001] The invention belongs to the technical field of fans, in particular to a small high-speed fan. Background technique [0002] At present, in the field of high-speed fans, there are problems of large dimensions, large volume, and poor heat dissipation, mainly because in the prior art, the iron core of the high-speed fan adopts an overall cylindrical silicon steel laminated iron core, and the iron core is 6. In slot or 3-slot form, the winding area ratio of the iron core is low, which leads to the large size of the high-speed fan in order to achieve certain performances. For example, in order to improve the flow and power, the volume of the high-speed fan is larger. In addition, due to the lack of theoretical knowledge and experience in the design of impellers, flow channels, etc. related to airflow and fluid, high-speed fans are prone to mismatch between power and load. Lead to high-speed fan temperature rise, low efficiency. There is an urgent need fo...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a small high-speed fan, which solves the problems of large volume and poor heat dissipation effect of the high-speed fan in the prior art, and overcomes the defects of high-speed fan temperature rise and low efficiency

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