Centrifugal fan impeller and preparation method thereof, centrifugal fan and air handling unit

Abstract

An embodiment of the present application provides a centrifugal fan impeller, the impeller includes a first end cover and a second end cover arranged in parallel, and a plurality of The blade, and the blade is integrally formed with the first end cover and the second end cover; the blade includes a fiber resin composite material, the fiber resin composite material includes multiple continuous fiber layers and a thermosetting resin cured on the multiple continuous fiber layers, the continuous fiber layer At least one of glass fiber and basalt fiber and carbon fiber are included. The blades of the impeller have low weight, high strength, high toughness and low cost, and the blades of the impeller are integrally formed with the end cover, so that the weight of the impeller can be reduced while taking into account low cost and reliability. The application also provides a preparation method of the impeller, a centrifugal fan and an air handling unit including the impeller.

Description

Centrifugal fan impeller and preparation method thereof, centrifugal fan and air handling unit technical field The application relates to power machinery technical field, be specifically related to a kind of centrifugal fan impeller and preparation method thereof, centrifugal Heart fans and air handling units. Background technique Centrifugal fan is one of the important mechanical devices in the dust removal ventilation system, it relies on the rotation of the impeller in the fan. Negative pressure is formed inside, and the outside air is sucked in and discharged from the fan through the impeller channel. It is widely used in energy, environment, aviation, etc. an area. Compared with the axial flow fan, the centrifugal fan has a large air volume and a high speed, which has a greater impact on the blades in the impeller. Therefore, higher requirements are placed on the mechanical properties of the impeller of the centrifugal fan. [0003] The impeller blades of centr...

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Problems solved by technology

[0003] The impeller blades of centrifugal fans are usually made of metal materials (such as stainless steel or aluminum alloy). Although this can improve the mechanical properties of the impeller, it will also significantly increase the weight of the impeller, which is not conducive to the design of the blade airfoil and the starting current of the fan. reduction of

In recent years, carbon fiber reinforced polymer matrix composites have been used to replace metal materials to effectively reduce the weight of the impeller, but the cost of using carbon fiber alone is high, and the fracture toughness of carbon fiber is not strong; in addition, the blades and upper and lower end covers of the impeller are usually It is formed separately, and the stress at the assembly connection of the two is relatively concentrated, which will affect the service life of the impeller

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