Fan and its flabellum

Abstract

This invention relates to fan, which comprises one fan frame and one blade, wherein, turbine axis is set into frame with several fan blades with one main fin and one assistant fin with one preset angle. This invention also discloses one fan blade.

Description

technical field [0001] The invention relates to a fan, in particular to a fan with better air outlet effect and its fan blades. Background technique [0002] Please refer to FIG. 1 , which is a conventional fan 1 which generally includes a frame 11 and an impeller 12 . The fan frame 11 has a housing 111 and a base 112 , and a plurality of ribs 113 are connected between the housing 111 and the base 112 . In addition, a motor (not shown) is disposed on the base 112 . The impeller 12 has a hub 121 and a plurality of fan blades 122 arranged around the hub 121. The impeller 12 is arranged on the base 112 of the fan frame 11 by means of the hub 121, and is driven by a motor to rotate relative to the base 112. Then, each fan blade 122 respectively compresses the air nearby, so that the fan 1 achieves the effect of blowing out wind. [0003] Please refer to FIG. 2 , which is an enlarged view of a single airfoil fan blade 122 in the existing impeller 12, wherein, the connection lin...

AI Technical Summary

Problems solved by technology

In this way, even if the speed of the fan 1 is increased again, the air volume cannot be increased, which is the so-called "stall" phenomenon (stall)

[0005] At this time, not only the air outlet efficiency of the fan 1 cannot be improved, but even noise will be generated, which not only increases the energy consumption of the fan 1, but also reduces the working efficiency of the fan 1

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