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武夷巖茶搖青機離心風機優(yōu)化設計與試驗
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國家自然科學基金項目（61903288）,、福建省科技創(chuàng)新平臺項目（2022-p-029）、福建省自然科學基金項目（2022J011191）,、福建省本科高校教育教學改革項目（FBJY20230282,、FBJG20210049）和武夷學院教改項目（KC202228RZ）


Optimization Design and Experimental Validation of Centrifugal Fan for Wuyi Rock Tea Shaking Machine
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    摘要:

    為提升武夷巖茶搖青機用離心風機性能，通過多目標遺傳算法對離心風機葉輪進行優(yōu)化設計與試驗驗證,。首先,，針對38組設計樣本，采用拉丁超立方設計方法對葉輪葉片數量,、葉輪內外徑比,、葉片進口安裝角、葉片出口安裝角,、葉片折彎半徑和葉片進口直徑進行優(yōu)化,；然后通過NSGA-Ⅱ多目標算法對構建的最小二乘回歸（Least squares regression, LSR）與移動最小二乘法（Moving least square method, MLSM）響應面模型進行求解，得到風機風量與風機效率最優(yōu)時的Pareto解集,，并進行Spearman變量相關性分析,；最后通過CFD數值仿真與試驗，驗證了優(yōu)化設計方法對實際設備搖青效果提升的有效性,。結果表明：葉片進口安裝角和出口安裝角對風機風量影響最大,，葉輪內外徑比和葉片出口安裝角對風機效率的影響最大，達到高相關程度,；最優(yōu)參數組合為葉片數量19,、葉輪內外徑比0.67、葉片進口安裝角73.86°,、葉片出口安裝角128.74°,、折彎半徑25.28mm、葉片進口直徑24.95mm,；相較于原型風機,，優(yōu)化后風機風量增加381.22m3/h,，風機效率提高4.33個百分點，葉梗,、葉片平均走水分別提高2.05,、3.15個百分點，做茶感官審評平均得分91.4,，驗證了風機優(yōu)化設計對整機茶葉搖青品質的提升,。

    Abstract:

    In order to improve the performance of centrifugal fan for Wuyi rock tea shaking machine, the centrifugal fan impeller was optimally designed and experimentally verified by multi-objective genetic algorithm. Firstly, for the 38 groups of design samples, the Latin hypercube design method was used to optimize the number of impeller blades, the inner and outer diameter ratio of the impeller, the inlet mounting angle of the blades, the outlet mounting angle of the blades, the bending radius of the blades, and the inlet diameter of the blades. Then, the constructed least squares regression (LSR) and moving least square method (MLSM) response surface models were solved using the NSGA-Ⅱ multiobjective genetic algorithm, the Pareto solution set for the optimal relationship between fan airflow and fan efficiency can be obtained, and Spearman variable correlation analysis can be conducted. Finally, the effectiveness of the optimized design method in improving the shaking effectiveness of the actual equipment was verified through CFD numerical simulation and experiments. The results showed that the blade inlet mounting angle and outlet mounting angle had the greatest effects on the fan airflow, the impeller inner and outer diameter ratios and the blade outlet mounting angle had the greatest effects on the efficiency of fan, reaching a high degree of correlation.The optimal parameter combinations were as follows: the number of blades was 19, the ratio of the inner and outer diameters of the impeller was 0.67, the installation angle of the blade inlet was 73.86°, the installation angle of the blade outlet was 128.74°, the bending radius was 25.28mm and the blade inlet diameter was 24.95mm. Compared with the prototype fan, the optimized fan air volume was increased by 381.22m3/h, the efficiency of fan was increased by 4.33 percentage points, the average water loss of the stem and leaves increased by 2.05 and 3.15 percentage points, respetively, and the average score of the sensory review of the tea was 91.4 points, which verified that the optimized design of the fan improved the quality of the whole machine for tea shaking.

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阮承治,陶齊齊,陳奕瑋,郭波,邱昌東,陳加友,楊君.武夷巖茶搖青機離心風機優(yōu)化設計與試驗[J].農業(yè)機械學報,2024,55(12):480-490. RUAN Chengzhi, TAO Qiqi, CHEN Yiwei, GUO Bo, QIU Changdong, CHEN Jiayou, YANG Jun. Optimization Design and Experimental Validation of Centrifugal Fan for Wuyi Rock Tea Shaking Machine[J]. Transactions of the Chinese Society for Agricultural Machinery,2024,55(12):480-490.

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  • 收稿日期:2024-08-22
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  • 在線發(fā)布日期: 2024-12-10
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