Wing sectional material combination type turbine centrifugal impeller

Abstract

The invention provides a wing sectional material combination type turbine centrifugal impeller and belongs to the field of turbine mechanical vane machining. Aviation aerodynamic force standard wing type structure sectional materials and composite wing type structure sectional materials generated on the basis of a standard wing type are used, the structure sectional materials are used as vane blank materials, and a centrifugal impeller vane is manufactured. A wing type structure vane with the uniform section or the non-uniform section is used, according to the difference of calculating flow patterns and using places (media), the space warping structure of the vane is determined, and the front edge and the back edge of the vane can be decorated according to situations. The front disc space curve face and the back disc space curve face are matched through the methods of cutting, stamping and forming milling, and the vane, a front disc and a back disc are integrally connected to form the impeller. The method is suitable for large-batch, large-scale and module production of centrifugal impellers, universality is high, the centrifugal impeller is especially suitable for centrifugal fan and centrifugal water pump industries, and great promotional value is achieved.

Description

Technical field [0001] The present invention involves the field of fan technology. Specifically, it is a combination of a combination of wing profile. Background technique [0002] The performance of transparent machinery to a large extent depends on the structure and shape of the diaphragm impeller blades. The existing centrifugal wing -type leaf wheel technology often uses precision milling and manual plastic surgery.High, it is difficult to form large -scale production.Although the small centrifugal leaf wheels are used in injection molding, the cost of molds is high, and the production cycle is long, which is far from meeting the increasingly competitive dynamic needs of the market.The centrifugal leaf wheel with a slightly large machine number is often limited by the tonnage of injection molding, and when the leaves are wing type, the mold is complex and the mold is difficult to draw core.Most of the existing centrifugal fans are used in the form of single -board blades. The...

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Problems solved by technology

[0002] The performance of turbomachinery largely depends on the structure and shape of the turbine impeller blades. The existing centrifugal airfoil impeller technology often adopts precision milling and manual shaping methods for processing, which is difficult to process and expensive to produce. High, it is difficult to form large-scale production

Although injection molding is used for small centrifugal impellers, the cost of molds remains high and the production cycle is long, which is far from meeting the dynamic needs of the increasingly competitive market

Centrifugal impellers with a slightly larger machine size are usually limited in tonnage by injection molding, and when the blades are airfoil-shaped, the mold is complicated and it is difficult to pull the core out of the mold

Most of the existing centrifugal fans are in the form of single-plate blades, which have low efficiency and high noise; although some impellers adopt a single-plate space-distorted blade structure to reduce noise, they still do not achieve the purpose of improving efficiency. In order to obtain High-efficiency centrifugal impellers are usually realized by precision casting, injection molding, die-casting and other methods, which makes the manufacturing cost of the fan high, the mold making cycle is long, and the versatility between different machine numbers is poor; the centrifugal impeller mostly uses single-plate blades, although simplified Manufacturing process, but at the same time generally lead to the consequences of low operating efficiency, narrow range of working conditions, and high noise

Although some impellers use airfoil blades, most of them are limited to manual patchwork welding, the accuracy of the airfoil is poor, the production cost is high, and it is not suitable for large-scale and large-scale production

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