| 诸永定， 曹骥， 郑鑫， 孙帅， 钱锦远， 金志江.多功能料理机锅体内流场研究[J].轻工机械,2020,38(1):22-27 |
| 多功能料理机锅体内流场研究 |
| Research on Flow Characteristics Inside Multi Functional Food Processe |
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| DOI：10.3969/j.issn.1005 2895.2020.01.005 |
| 中文关键词: 料理机 计算流体力学 旋涡分布 旋转速度 刀具结构 |
| 英文关键词:food processer CFD (computational fluid dynamics) vortex distribution rotating speed cutting blade structure |
| 基金项目:国家自然科学基金资助项目(51805470)；中央高校业务经费项目（2018FZA213）。 |
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| 中文摘要: |
| 目前市面上部分料理机存在粉碎能力差以及工作时间长等缺点，为了改善料理机的性能，笔者采用计算流体力学的分析方法对多功能料理机内部的流动状态进行了数值模拟研究。通过对设计转速及其上下转速区间内料理机锅体内的流速流线分布以及剪切应变率分布的分析，发现垂直锅体底面方向上的旋涡分布对刀具的粉碎效果有重要的影响；流体的运动速度以及剪切应变率随着刀具转速的增加而增加，即增加刀具的转速能显著提高物料的粉碎性。因此，在合适的转速下，合理的刀具及锅体结构可改善料理机的性能。 |
| 英文摘要: |
| Some food processers have disadvantages such as poor crushing efficiency and long working hours. In order to optimize the performance of food processers, the flow characteristics inside the multi functional food processer were investigated by computational fluid dynamics (CFD) method. Through the analysis of the velocity distribution and shear strain rate distribution in the design speed and in the speed range of the food processer, it is found that the vortex existing on the vertical cross section has a significant influence on the crushing efficiency of the food processer. The results show that the fluid velocity and shear strain rate increase with the increase of cutting blade rotating speed, which indicates that the crushability of materials can be remarkably improved by increasing rotating speed of the cutting blade. Therefore, the performance of the food processer can be enhanced by proper cutting tool and pot structure at proper rotating speed. |
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