FRP Centrifugal Fan Blades

Abstract

The invention relates to a fiber reinforced plastic fan blade for centrifugal fans, structurally comprising a front disc (1) and a rear disc (2). 12 Blades (3) are evenly distributed between the front disc (1) and the rear disc (2), each blade (3) is in an arch form, a supplementary angle a for a tangential angle of a circle of the arch form is 157 degrees, a supplementary angle b for a tangential angle of a chord, passing through the arch form, of an inner circle of the rear disc (2) is 127 degrees, and an included angle c of intersecting tangents of the circle of the arch form and inner circle of the rear disc (2) is 150 degrees. The fiber reinforced plastic fan blade for centrifugal fans has the advantages that the dimensional precision is completely satisfactory to the design needs, a whole fan's running capacity is increased by higher than 30%, the fan blade has low concentricity and balance degree tolerance, the strength of the fan blade reaches that of steel, a test at a speed over 25% shows no damage, manufacture efficiency is 10-20 times as high as manual efficiency, the outline is smooth and even, and quality control precision reaches the unit of si.

Description

technical field [0001] The invention relates to a fiberglass centrifugal fan blade. Background technique [0002] In the existing technology, the dimensional accuracy of the fan blades of the FRP centrifugal fan can easily fail to meet the design requirements, the efficiency is low, the power consumption of the whole machine is large, the concentricity and balance of the fan blades are extremely large, the strength is low, and the production efficiency is low. , And the general appearance is rough, the quality is very difficult to control, it is easy to cause enterprises. Contents of the invention [0003] The invention proposes a fan blade of a fiberglass centrifugal fan, and its purpose is to overcome the deficiencies in the prior art and provide a fan blade whose overall shape meets the requirements. [0004] The technical solution of the present invention: FRP centrifugal fan fan blade, its structure includes a front disk and a rear disk, 12 blades are evenly distribu...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, the dimensional accuracy of the fan blades of the FRP centrifugal fan can easily fail to meet the design requirements, the efficiency is low, the power consumption of the whole machine is large, the concentricity and balance of the fan blades are extremely large, the strength is low, and the production efficiency is low. , and the general appearance is rough, the quality is very difficult to control, it is easy to cause the enterprise

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