Axial flow fan structure and axial flow fan

Abstract

The invention relates to an axial wind wheel structure and an axial fan, the axial wind wheel structure comprises a wheel hub and three blades mounted on the wheel hub, the three blades are equidistantly distributed by using a rotation central axis of the blades as the centre, the blade is provided with a tail edge and a front edge opposite to the tail edge, the tail edge of the blade is provided with at least five V-shaped saw-toothed grooves in different sizes, the bottom point of each V-shaped saw-toothed groove and two end points of the tail end are in a straight line. The tail edge of the blade is provided with at least five discontinuously arranged V-shaped saw-toothed grooves in different sizes, the bottom point of each V-shaped saw-toothed groove and two end points of the tail end are in the straight line, and therefore, the more comprehensive optimization design of the axial fan can effectively improve the air quantity and the efficiency of the axial fan, improves the fan vibration, and reduces the fan noise and the design cost; meanwhile, the axial fan is characterized by high load; according to the above characteristics, the axial fan is preferably suitable for an outdoor unit of an air-conditioner, and can improve the refrigerating output, heat quantity and energy efficiency ratio of the air-conditioner.

Description

technical field [0001] The invention relates to the technical field of axial flow fans, in particular to an axial flow wind wheel structure and an axial flow fan suitable for the outdoor unit of an air conditioner. Background technique [0002] At present, the outdoor unit of the indoor air conditioner basically adopts an axial flow fan, and the blades of the axial flow fan usually consist of 2-6 blades. Although the axial flow fan has the advantages of large air volume and low noise. However, the design of the axial flow fan has a direct impact on performance parameters such as cooling capacity, heating capacity and energy efficiency ratio of the air conditioner. Therefore, the optimal design of the axial flow fan is crucial to the performance of the air conditioner. [0003] For conventional axial flow fans, the air volume is proportional to the number of blades. The more blades, the easier it is to obtain a larger air volume. However, the more blades, the higher the cos...

AI Technical Summary

Problems solved by technology

[0004] Although there are designs for axial flow fans in the current technology, which can suppress fan noise and reduce the manufacturing cost of fans, they have not comprehensively considered the above factors and carried out comprehensive improvement and optimization design, so that the overall performance of axial flow fans cannot be improved.

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