二阶连续可微整体变截面涡旋机械型线设计理论

项目名称： 二阶连续可微整体变截面涡旋机械型线设计理论

项目编号： No.51265027

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 刘涛

作者单位： 兰州理工大学

项目金额： 50万元

中文摘要： 环境友好、高效节能型涡旋机械设计是当前世界各国关心的热点问题。涡旋型线是影响涡旋机械性能的关键因素之一。然而，传统等截面型线涡旋零件在环保制冷介质中受力和变形严重，且不能很好应对在排量、泄漏损失、材料利用率等方面的技术挑战。本项目旨在从涡旋型线创新设计视角出发，通过对圆矢量函数的优选和几何尺度扩展，获得基础型线单元的精简数学模型；对涡旋全齿啮合轨迹进行性能预估和适应性设计，构建基于二阶连续可微几何边界条件的整体变截面型线数学模型，使之具有良好的几何、动力和加工等综合性能。并进一步探索整体变截面型线涡旋压缩机在适应环保制冷剂、增大排量、减少泄漏损失、提高材料利用率等方面的潜在优势。在此基础上构建二阶连续可微整体变截面涡旋型线设计理论，为高效节能型涡旋压缩机的设计与制造提供理论依据和实证支持，同时也将为其它以涡旋原理为工作机理的机械产品的设计提供新的思路和方法。

中文关键词： 涡旋机械；整体变截面型线；二阶连续可微；综合性能；测试实验

英文摘要： Design of environmental-friendly, high efficiency and energy saving scroll fluid machine is a hot issue of concern to many countries these days. Scroll profile is one of the most significant influences of comprehensive performances. However, traditional uniform-profile scrolls under pressure are distorted significantly in environmental-friendly refrigerant. In addition, they are not capable of meeting technical challenges in discharge capacity, leakage loss and material usage rate. From a standpoint of creative profile design，the proposed project aims to obtain the concise mathematical model for basic profile units by optimally selecting and geometrically expanding the circular vector function. Subsequently, mathematical model for second-order continuously differentiable overall non-uniform profile will be established based on estimated properties and adaptable design of overall engaging path of scroll profiles to achieve excellent performances of geometry, dynamics and workability. Furthermore, the potential superiority of overall non-uniform scroll profile will be explored in terms of refrigerant adaptation, discharge capacity, leakage loss and material usage rate. Therefore, design theory on second-order continuously differentiable overall non-uniform profile for scroll fluid machine will be founded so as to

英文关键词： scroll fluid machine；overall non-uniform profile；second-order continuou；comprehensive performance；testing experiment