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Fan blades and related methods

A technology for fan blades and modifying features, applied in the field of fan blades, can solve the problem that fan blades are not too hard

Active Publication Date: 2019-07-26
雷顿股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fan blades tend to become less stiff with material removal (such as by uniformly thinning the fan blades), which can present challenges in terms of structural integrity as well as blade life and reliability

Method used

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  • Fan blades and related methods
  • Fan blades and related methods
  • Fan blades and related methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The fan blades, fan assemblies and methods of the present invention combine the benefits of an improved or optimized blade design with the flexibility to produce multiple axial fan configurations with a single blade design and manufacturing tool. The fan center hub can be specially designed from a flat stock of material to allow rapid production of fan centers of various shapes and sizes at relatively low manufacturing costs. The final fan assembly may retain the design benefits of a single fan blade, such as improved airflow and / or low mass construction, while also providing modular flexibility with multiple diameter and blade count combinations that Use the same blade configuration in different fan assemblies. Performing fan blade enhancements with a flexible fan hub design allows a fan manufacturer to produce multiple fan assembly configurations using reduced tooling and design costs across a full range of fan assembly configurations.

[0026] With regard to individ...

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PUM

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Abstract

The fan blade (134) includes a working area (148) having a leading edge (138) and a pressure side (136). A plurality of flow modifying features (150-1 to 150-4) are positioned at the work area, including first and second flow modifying features (150-1, 150-2, 150-3), first and second Each of the two flow modifying features has a wedge shape and is located on the pressure side, the flow modifying feature having a tip (152) and a wider end (154). The length of the first flow modifying feature is less than the chord length of the fan blade, and the tip of the first flow modifying feature is spaced from the leading edge. The length of the second flow modifying feature is less than the chord length of the fan blade, and the tip of the second flow modifying feature is spaced from the leading edge. The first and second flow modifying features are spaced apart from each other to define a channel (156) therebetween.

Description

technical field [0001] The present invention relates to fans, and more particularly to fan blades having structural, mass and / or flow improving features. Background technique [0002] Fans, such as those used in automotive applications, take various forms. Axial fans are the most common type found in automotive applications. Historical designs include fans that are manufactured at a given diameter and then have the blade tips trimmed to change the fan diameter, as well as fans that are manufactured with a specific flow optimization at the blade tips and are only available in a single diameter (eg, ring fans). [0003] In one aspect of the present invention, it is desirable to provide an axial fan blade that reduces acoustic noise-generating air recirculation and turbulence through ribs or other structures positioned along the pressure side and / or suction side of the blade. Aspects provide fluid flow improvements. It would also be desirable to provide a modular axial fan a...

Claims

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Application Information

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IPC IPC(8): F04D29/38F04D29/66F01P5/02F04D29/68
CPCF01P5/02F04D29/388F04D29/663F04D29/666F04D29/681F05D2240/305F05D2240/306F05D2250/71F04D29/384F05D2240/307Y02E10/72F05D2260/961F05D2240/303F04D25/08F04D29/34F04D29/38F04D29/667
Inventor 休·席林大卫·R·亨尼西凯文·卡希尔
Owner 雷顿股份公司
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