Fan

Abstract

The invention relates to a fan which comprises a fan frame, an impeller and a motor. The fan frame comprises a base, a fan frame shell and a plurality of stationary blades. The fan frame shell comprises an air outlet, the stationary blades are annularly arranged at the outer peripheral edge of the base and are connected between the base and the fan frame shell, and the tail ends, close to the airoutlet, of the stationary blades are separated from the air outlet and do not protrude the air outlet. The impeller comprises a wheel hub and a plurality of movable blades. The wheel hub is provided with a curved surface and the slopes of straight lines formed by any two points on the curved surface are different. The movable blades are annularly arranged at the outer peripheral edge of the wheelhub. The motor is arranged on the base and is connected to the impeller and drives the impeller to rotate.

Description

technical field [0001] The invention relates to a fan, in particular to a diagonal flow fan with concave stator blades. Background technique [0002] With the continuous improvement of the efficiency of electronic devices, the current electronic devices will generate a lot of waste heat during operation. If the heat cannot be taken away from the electronic devices in real time, the temperature of the electronic devices will increase, causing damage to internal components and reducing the efficiency of the electronic devices. and service life. A fan is a heat dissipation device widely used in electronic devices. Currently, those skilled in the art have developed a fan whose blades and hub have two or more unequal diameters (also known as a diagonal flow fan). Although the oblique flow fan is convenient for heat dissipation of electronic devices, it is not easy to use the existing fan design to achieve the effect of improving the characteristics of the oblique flow fan due t...

AI Technical Summary

Problems solved by technology

Although the oblique flow fan is convenient for heat dissipation of electronic devices, it is not easy to use the existing fan design to achieve the effect of improving the characteristics of the oblique flow fan due to its geometric shape

[0003] In addition, due to its geometric shape, the choice of the motor is also limited by the height of the material. For high-power heat dissipation applications, the material of silicon steel sheet is used, which is more likely to generate waste heat and accumulate inside the fan. Cause the internal overheating of the fan, cause the circuit board to burn out or greatly reduce the operating efficiency of the fan, and then affect the heat dissipation efficiency and service life of the fan

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