梯形截面涡旋压缩机的型线设计及泄漏特性

电动汽车整车热管理系统需要搭载大排量的涡旋压缩机以适应多工况高负载的设计需求。本文提出一种大排量涡旋压缩机的型线设计方法,通过经实验校正的仿真模型研究了梯形截面涡旋压缩机的几何特性及泄漏特性。计算结果表明：梯形截面涡旋压缩机在保证齿根强度校核的前提下,平均壁厚降低29.9%,排量提升19.5%。研究型线设计参数对泄漏特性的影响,发现梯形截面涡旋压缩机的内泄漏率与等壁厚涡旋压缩机相差不足2%,具有良好的应用前景。     

一种类似于PMP涡旋压缩机型线的引入

本文引入了一种类似于ＰＭＰ（ＰｅｒｆｅｃｔＭｅｓｈＰｒｏｆｉｌｅ）的型线，推导出型线方程以及工作腔容积，并与具有普通型线及ＰＭＰ型线的涡旋压缩机进行比较分析。     

贝塞尔曲线在涡旋型线齿端加强中的应用

针对涡旋压缩机涡旋型线齿端部分壁厚较小,强度较低的问题提出了一种新的型线加强方法,替代了传统的圆渐开线与直线和多段圆弧相连的齿端形式,对齿端圆弧部分和圆渐开线啮合部分的平滑过渡条件C_0、C_1、C_2连续进行了分析,采用一条贝塞尔曲线连接圆渐开线与圆弧的新型齿端加强方法,此方法有效地改善了涡旋线齿端强度较低的问题,提高了涡旋压缩机的可靠性。     

涡旋压缩机涡旋盘的在线检测

基于涡旋型线的精密加工,设计了一套涡旋盘的检测系统,利用该系统,可以测得涡旋体的线轮廓度误差,该系统不存在二次装夹误差,检测结果直接反映加工误差,可直接用于生产现场中对涡旋型线进行检测,对防止出现废品起到主动积极的作用。     

涡旋齿端型线的三角函数类修正研究

在深入研究涡旋压缩机型线包络啮合原理的基础上,提出了涡旋齿端型线的三角函数类修正几何理论,给出了齿端型线的通用修正方程并探讨了各种可能的修正形式.采用等距线法导出了任意封闭压缩腔容积的通用解析表达式和内容积比计算公式.系统地分析了各修正参数对涡旋齿端形状、压缩机内容积比和气体载荷特性的影响,精确地给出了它们之间的定量关系,总结了修正参数变化与容积效率、摩擦泄漏损失变化之间的规律,指出了三角函数类修正与圆弧类修正的转化条件.上述结论同样适用于其他涡旋型机械的型线修正.     

涡旋压缩机技术研究进展与发展趋势

涡旋压缩机作为一种容积式压缩机,凭借其低振噪、高效率等优势,已成功应用于制冷、动力等各个领域。近年来,国内外学者对涡旋压缩机相关技术进行了深入研究,本文针对近十年涡旋压缩机技术研究进展,主要从涡旋压缩机的涡旋型线、泄漏及密封、平衡设计以及应用领域等方面对其进行阐述,对近十年国内外学者在这些方面取得的科研成果进行归纳和总结,指出了未来涡旋压缩机的发展趋势。     

涡旋型线轮廓测量方案探究

针对涡旋型线测量误差大、时间长的现象,基于圆柱坐标系提出了3种涡旋体侧面轮廓测量方案.由测头在测量过程中与涡旋体轮廓的相对位置,分析各方案的测量接触角状态,得到测量头全程沿型线法线方向,完成涡旋体整体轮廓测量的方案,为涡旋型线测量提供了一定的理论基础和应用参考.     

驱动轴承内嵌式涡旋压缩机特性分析

对驱动轴承内嵌于动涡旋齿中的涡旋式压缩机的几何特性进行了研究分析，引入了涡旋型线始端展角和终端展角，使吸气容积、吸气角、排气容积、排气角、内容积比等几何参数计算式的应用更为方便，它不仅适用于涡旋型线为整数圈的情况，而且也适用于涡旋型线为非整数圈的情况。将动涡旋的驱动轴承安置于涡旋齿中，可以在结构设计上达到减少气体力和动涡旋离心惯性力对动涡旋产生的倾覆力矩的目的，从而改善了驱动轴承的受力状况。延长了使用寿命。     

涡旋压缩机涡旋盘变形的有限元分析

本文采用自行编制的涡旋压缩机涡旋盘专用有限元分析软件，对各种不同几何参数的涡旋压缩机静，动涡旋盘实际运转工况下进行变形分析，研究在工作压力和温度焉静，动涡旋盘的轴向和径向间隙变化对涡旋压缩机性能的影响。     

涡旋压缩机动静盘加工精度与泄漏量模型的理论研究

本文结合分形几何关于表面形貌的理论和等截面摩擦管内绝热流动的法诺流动模型,研究了通用型线涡旋压缩机泄漏量与啮合间隙的综合误差及粗糙表面分形维数的关系,为合理确定涡旋盘的加工精度,控制压缩机的泄漏量,提供了理论依据     

On the profile design of a scroll compressor

The scroll configuration plays a very important role in the design of a scroll compressor. Therefore, in the present paper, a general design process for the profile of a scroll compressor is proposed. The design process is developed based on geometric as well as kinematic considerations. It is general enough that not only a perfect meshing profile (PMP) but other profiles can be designed and constructed. The latter includes meshes with clearance and meshes with interference. A correction angle is introduced such that the discharge angle of the compressor can be varied from a negative value to a positive value, which in turn results in different shapes of scroll profile. The geometric boundary conditions for all profiles are maintained continuous up to the first order. Easier manufacture and better performance of scroll compressors may be predicted based on this condition. Computer simulations are provided to show that applicability and versatility of the proposed design process.     

涡旋并联机与螺杆压缩机的效率和成本分析

从效率与成本的角度对涡旋并联机和螺杆压缩机进行比较分析。     

The effect of scroll wraps on the performance of scroll compressors

A number of geometrical curves have been used to form the wraps of scroll compressors. When the suction pressure, pressure ratio, scroll wrap height and thickness, and suction volume are constant, the effect of the involute curves of a cricle, square and line segment on the performances of the scroll compressor, such as geometrical parameters, leakage line length and various gas forces acting on the orbiting scroll are analysed in this paper. The effects of these scroll wraps on the performance of the scroll compressor vary as the suction volume changes. The results in this paper should be considered in scroll compressor design.     

涡旋式压缩机轴向柔性补偿机构设计

介绍涡旋式压缩机轴向柔性补偿机构的原理、设计流程、设计实例以及测试结果，同时针对高压式设计与中压式设计对压缩机运转范围的影响作一比较，为设计者、使用者与有兴趣的读者提供参考。     

并联涡旋式压缩机油气平衡系统模拟分析及结构优化

采用两相流Eulerian模型对并联涡旋式压缩机油气平衡系统进行CFD模拟分析,得出引起2台压缩机油位差的原因是吸气管到各台压缩机分管路压差的不平衡。为减小2台压缩机的油位差,在其中1台压缩机吸气口端设置限流环,并进行模拟分析及试验验证。结果表明,在压缩机吸气口端设置直径为23 mm的限流环可以使2台压缩机的油位差不大于2 mm,满足并联涡旋式压缩机安全运行要求。     

R404A和R407A冷冻涡旋式压缩机性能比较

对制冷剂R404A与R407A的热物理特性进行比较,探讨R407A应用于冷冻涡旋式压缩机的可行性,并对这2种制冷剂涡旋式压缩机进行测试,根据容积效率、等熵效率、排气温度、压缩机电流等参数的比较分析,为R407A涡旋式压缩机的开发提供参考依据。     

涡旋式压缩机在低温冷冻领域应用的实验研究

针对带HVE阀设计的半封闭卧式涡旋式压缩机,与当前冷冻市场上广泛使用的一款活塞式压缩机的性能进行对比测试。测试结果表明:由于喷气增焓的作用,随着系统压比的增大,涡旋式压缩机在制冷量方面表现出明显的优势。当蒸发温度为-25℃时,其制冷量与活塞式压缩机的比值,从25℃冷凝温度的约90%,提高到50℃冷凝温度的约130%。与活塞式压缩机相比,在上述运行工况下,涡旋式压缩机的性能也有所提升,当蒸发温度为-25℃时,R404A涡旋式压缩机的EER比活塞式压缩机的提高约2%~8%;R22涡旋式压缩机的EER比活塞式压缩机的提高2%~3%(冷凝温度为25℃时),冷凝温度为50℃时提高4%~5%。     

涡旋式压缩机中间补气技术

对带有中间补气功能的涡旋式压缩机理论循环进行分析,针对在不同蒸发温度下采用中间补气对涡旋式压缩机的能力、功率、排气温度及能效比的影响进行试验研究与分析。结果显示,与普通涡旋式压缩机相比,带有中间补气功能的压缩机在蒸发温度由-5℃到-20℃之间变化时,其能力提升约15%～30%,能效比提升约9%～19%,功耗仅上升约10%。     

涡旋压缩机堵转测试台的设计与制作

中大功率的涡旋压缩机堵转测试比较困难,而对多电源的系列压缩机进行全面检测则是难上加难。本文对涡旋压缩机堵转测试台的设计难点进行分析,成功研制了堵转测试台,并对比分析试验结果与法国的测试结果,发现两者准确性相同。测试既满足UL要求,也满足GB要求。     

Mathematical modeling of scroll compressors — part II: overall scroll compressor modeling

This paper presents the development of a comprehensive simulation model of a horizontal scroll compressor, which combines a detailed compression process model (Chen Y., Halm N., Groll E., Braun J. Mathematical modelling of scroll compressors — part I: compression process modeling, International Journal of Refrigeration 2002;25(6):731–750) and an overall compressor model. In the overall model, compressor components are analyzed in terms of nine different elements. Steady state energy balance equations are established applying the lumped capacitance method. In combination with the detailed compression process model, these equations were implemented into computer code and solved recursively. In this way, the temperature and pressure of the refrigerant in different compressor chambers, the temperature distributions in the scroll wraps, and the temperatures of the other compressor elements can be obtained. Thereafter, power consumption and efficiency of the compressor can be calculated. Tests were used to verify the overall model on a macroscopic basis. Using the simulation program based on the overall compressor model, a parametric study of the scroll compressor was performed, and the effects of internal leakage and heat transfer losses were investigated and some preliminary results were obtained. These results indicate that the comprehensive scroll compressor model is capable of predicting real compressor behavior and useful to the design and optimization of scroll compressors.