Design of 2D Blade Curves of Centrifugal Fans by Controlled Deceleration Flow Method

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Design of 2D Blade Curves of Centrifugal Fans by Controlled Deceleration Flow Method

更新时间：2025-07-09

- Design of 2D Blade Curves of Centrifugal Fans by Controlled Deceleration Flow Method
- Vol. 43, Issue 9, Pages: 67-70(2009)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH432
- Online First：10 September 2009，
  
  Published：2009
- 稿件说明：
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Design of 2D Blade Curves of Centrifugal Fans by Controlled Deceleration Flow Method[J]. 2009, 43(9): 67-70.
DOI：

Design of 2D Blade Curves of Centrifugal Fans by Controlled Deceleration Flow Method[J]. 2009, 43(9): 67-70. DOI：

摘要

提出采用可控减速法设计离心风机两元叶片

即通过三维黏性流场计算

采用正交试验设计方法

以确定流道内平均速度的减速规律和叶片型线.在满足原有的气动设计点参数和不改变风机轮盖和轮盘几何尺寸的前提下

对某高效离心风机叶片型线进行了重新设计.整机全工况数值计算表明

优化后的风机效率在绝大部分工况范围内都明显提高

压力在设计和小流量工况时也比原风机高

而且大大避免了原风机的过载导致烧毁电机的问题.设计工况详细的流场分析表明

优化设计风机的叶轮流道内静压分布更加均匀

消除了分离损失

说明该方法是风机叶片优化设计的可靠和快速方法.

Abstract

A new approach to optimum design of the two-dimensional blade curves of centrifugal fans was proposed in this study. In the present method

the orthogonal design and the three-dimensional viscous flow field computation were used to determine the optimum controlled deceleration flow in impellers and the blade curves. The blade of a high-efficiency fan was redesigned without changing its design point parameters and the profiles of its hub and shroud. The computational results for the whole fan show that the fan efficiency is improved clearly in most of the operation range

and the total pressure is increased at the design and low flow rates. Moreover

unlike the original fan

the possibility of the motor burning caused by overload can be reduced greatly. In addition

the analysis on the flow field indicates that the static pressure distribution of the flow in the impeller is more uniform and the separation region is eliminated. These results imply that this reliable method may be suitable to the design of the two-dimensional blade curves of centrifugal fans.

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references

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LI Lin, YU Jianzu, XIE Yongqi. Design of small-size and high-pressure centrifugal fans used in helicopters[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003,29(3):244-247.

席光,王志恒,王尚锦.叶轮机械气动优化设计中的近似模型方法及其应用[J].西安交通大学学报,2007,41(2):125-135.

XI Guang, WANG Zhiheng, WANG Shangjin. Optimization design of turbomachinery with approximation model method [J]. Journal of Xi'an Jiaotong University, 2007,41(2):125-135.

李景银,梁亚勋,田华.不同型线离心风机叶轮的性能对比研究[J].工程热物理学报,2008,29(6):963-966.

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