The new type of fan blade can make mold processing easier and reduce the manufacturing cost. The original multi-slider combination demoulding has been changed to direct demoulding before and after. The multi-slider combination has poor machining accuracy, difficult tolerance matching, and high manufacturing difficulty. New structure There is no multi-slider combination for the fan blade, the mold is composed of two parts, the mold is more stable, and the cost is reduced. The manufacturing difficulty is lowered, but the product precision is improved.

 

By optimizing the curved surface of the fan blade, the air volume is effectively increased. The curved surface design of the blade tail further stabilizes the wind direction, improves the heat dissipation efficiency, and improves the overall performance of the fan.

 

By adding a part of the plane baffle on the upper (or lower) edge of the blade, only a small part of the area is increased, which effectively improves the shrinkage and deformation of the plastic. In order to avoid the large area and large circular design in the conventional design, the use of Large-area plastic zone design. In the process of blade injection molding, due to thermal expansion and contraction, the blade deforms seriously, which affects the plane of the blade, which makes the dynamic balance of the product worse. The new structure of the fan blade effectively improves this deformation problem. .

 

The front end of the fan blade is provided with a blade fixing frame, the upper part of the blade fixing frame is provided with a blade transverse plate and a blade made of curved surface, a fixing buckle is provided on the upper part of the casing, and a fixing frame is provided on the bottom of the casing.

 

The ring-shaped multi-stage blade structure of the fan blade adopts a new blade design principle, which greatly increases the overall windward area of ​​the fan blade. In the case of the same diameter, even if the fan speed drops to the bottom, sufficient ventilation can be maintained.

 

The annular multi-stage blade structure of the fan blade includes a fan blade shaft and a two-stage blade group. The blade group includes a plurality of blades, and the plurality of blades are arranged around the blade shaft. There is a connection between two adjacent blade groups. The blade groups are of the same type. The distance between the blade and the axis of the sheet is equal.

 

The blades in the same blade group have the same installation angle, the installation angle is an acute angle, the installation angle of the blade group close to the blade axis is greater than the distance from the installation angle of the fan blade shaft blade group, and the axial projection area of ​​the blade group close to the fan blade axis is less than The axial projected area of ​​the blade group away from the fan blade axis.

 

Due to the large diameter of the traditional fan blades, in order to maintain a relatively balanced force between the blades, the structural design of each blade is such that the farther away from the new axis, the smaller the blade width, and the fan blades are divided into a plurality of equally spaced concentric rings Area, the farther away from the new axis, the ratio of the blade area to the total area of ​​the concentric ring area will be greatly reduced.