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Fan blade optimization design method based on blade profile curve and efficient fan

An optimized design and curve technology, which is applied to components, calculations, and mechanical equipment of pumping devices for elastic fluids, can solve the problems of large fan vibration and high operating noise, and achieve large fan vibration and reduce operating wind noise , the effect of less vortex

Pending Publication Date: 2019-10-15
MITSUBISHI HEAVY IND HAIER QINGDAO AIR CONDITIONERS CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide an optimal design method for fan blades based on blade profile curves to solve the problems of large fan vibration and high operating noise

Method used

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  • Fan blade optimization design method based on blade profile curve and efficient fan
  • Fan blade optimization design method based on blade profile curve and efficient fan
  • Fan blade optimization design method based on blade profile curve and efficient fan

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Embodiment Construction

[0025] To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.

[0026] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0027] combine Figure 1 to Figure 5 As shown, this embodiment provides a fan blade optimization design method based on the profile curve, which is used to optimize a low-pressure axial flow fan. The fan has a central ...

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Abstract

The invention provides a fan blade optimization design method based on a blade profile curve and an efficient fan. According to the fan blade optimization design method based on the blade profile curve, through a concentric cross section coaxial with the rotating shaft direction, intersecting curves are obtained through curved face transversal fan blades; then a plane is unfolded, the blade profile curve is obtained; the blade profile curve is a trajectory face obtained when a fan pressure face (a face facing the axial flow air outflow direction) slaps air in the movement direction of the fanpressure face; due to a performance target and a size target, the curvature, radian or inclination angle factors of the blade profile curve are adjusted, optimization adjustment on the fan blade facefor directly slapping the air is achieved, and the air is slapped with an optimal curved face; and the fan efficiency is high, back vortexes are few, large vortexes are scattered into small vortexes,fan blade vibration and operation air noise are directly lowered, and the problems that fan vibration is large and the operation noise is high are solved.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning equipment, and in particular relates to a fan blade optimization design method based on a blade shape curve and a high-efficiency fan. Background technique [0002] The noise and vibration in the air conditioner have always been an important criterion for the quality of the air conditioner. The fan blades of the external unit of the air conditioner are not only required to effectively reduce vibration, but also need to reduce noise to provide users with a comfortable environment. [0003] Fan vibration and aerodynamic noise are mainly caused by the blades slapping the surrounding air to generate pressure pulsation, which simultaneously causes rotational noise, and the surrounding air pressure distribution characteristics cause local eddy currents to cause eddy current noise. Contents of the invention [0004] The present invention aims to provide an optimal design method for fan blades...

Claims

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Application Information

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IPC IPC(8): F04D29/38F04D29/66G06F17/50
CPCF04D29/386F04D29/666F04D29/667G06F30/17G06F30/20
Inventor 袁志杰范增年相金波
Owner MITSUBISHI HEAVY IND HAIER QINGDAO AIR CONDITIONERS CO LTD
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