共查询到15条相似文献,搜索用时 109 毫秒
1.
2.
3.
4.
5.
基于三圆弧的旋叶式压缩机新型线叶片设计 总被引:1,自引:0,他引:1
与定子内壁相接触的叶片头部形状,是旋叶式压缩机的设计关键。创造性提出的基于三圆弧(Three circular arc,TCA)叶片型线的原理和导出的叶片型线的设计计算理论,为实现高效压缩的旋叶式压缩机设计提供了理论计算依据,拓宽了旋叶式压缩机的设计理论。计算机仿真与试验表明,三圆弧叶片比传统方法设计的叶片具有更好的啮合特性,完全消除了"尖点滑移"和局部磨损现象,具有均匀相对滑动;型线的形状保证了叶片头部与定子内壁密封的可靠性;叶片头部具有最简单的型线形状,易于机械加工制造;与主型线光滑连接的前、后过渡修正圆弧,使叶片与定子内壁啮合时,不成刀刃状,且利于形成油膜,改进了润滑状况,同时降低了定子、转子及转子叶片和叶片槽的加工和装配精度要求。 相似文献
6.
任意缸体旋叶式压缩机的叶片型线设计理论研究及应用 总被引:2,自引:0,他引:2
与缸体内壁相接触的叶片头部形状是旋叶式压缩机设计的关键之一。应用微分几何理论,研究出与各设计基本参数紧密相关、与缸体型线相匹配的叶片型线设计方法,从理论上保证旋叶式压缩机的运行可靠性,为实现高效压缩的旋叶式压缩机设计提供计算依据,拓宽设计理论。计算机仿真与试验表明,由设计理论获得的叶片具有很好的啮合特性,完全消除了尖点滑移和局部磨损现象,具有均匀相对滑动;型线的形状保证叶片头部与缸体内壁的运行可靠性;叶片头部具有最简单的型线形状,易于机械加工制造;与主型线光滑连接的前、后过渡修正圆弧,使叶片与缸体内壁啮合时,不成刀刃状,且利于形成油膜,改进润滑状况,同时降低缸体、转子及转子叶片和叶片槽的加工和装配精度要求。 相似文献
7.
新型旋叶式压缩机滑片倾斜角优化设计 总被引:1,自引:0,他引:1
在建立工作过程数值模拟的基础上,对新型旋叶式压缩机的滑片倾斜角进行了优化。针对排气量为96cc的机型,给出了具体的计算实例及结果。并进一步分析、讨论了滑片倾角对此种新型旋叶式压缩机受力的影响。 相似文献
8.
9.
旋叶式压缩机转子轴动力分析比较 总被引:2,自引:1,他引:1
依据工作过程模拟,给出了两种典型旋叶式压缩机转子轴的受力随转轴转角的变化规律。对不同结构形式下的转子轴受力及力矩的主要特点进行了分析,为旋叶式压缩机的选型及深入研究提供了条件 相似文献
10.
针对旋叶式压缩机的启动噪声,对压缩机系统进行了试验、分析和改进。在半消声室中搭建了噪声测试试验平台,测试了压缩机的启动噪声,分析了压缩机的启动机制。提出了控制启动噪声时长的措施,试验测试不同球阀结构及离合器结构对压缩机启动噪声的控制效果,并在整车上对球阀结构与离合器结构的控制效果进行了试验验证。结果表明:旋叶式压缩机的启动噪声是不可避免的固有表征;通过优化压缩机球阀结构及离合器结构的控制方法能够有效缩短启动噪声时长1~2 s。 相似文献
11.
基于Pro/MECHANISM的旋转式压缩机运动仿真机构的建立与分析 总被引:2,自引:1,他引:1
在旋转式压缩机的开发与设计过程中,滑片与滚套之间是否干涉、滑片行程随时间变化的函数规律往往是设计人员关注的焦点,而常规的设计方法无法动态地解决上述两个问题,运用Pro/E的Mechanism模块所建立的旋转式压缩机运动学仿真机构,不但直观、快捷地解决了上述两个问题,从运动的角度保证了压缩机结构设计的合理性与可靠性,同时还为进一步进行动力学分析、敏感度分析和优化设计打下了坚实的基础。 相似文献
12.
13.
本文介绍了具有飞块减摩装置滑片压缩机的结构特点和工作原理,建立了该压缩机飞块和滑片的动力学模型,讨论了滑片与缸孔壁面脱空的约束条件。研究表明,飞块减摩装置虽然可以有效减少滑片与缸孔的摩擦和磨损,但如果设计不当将会出现滑片脱空现象而影响压缩机的性能。 相似文献
14.
The rolling piston type rotary compressor has been widely used for refrigeration and air-conditioning systems due to its compactness
and high-speed operation. The present analysis is part of a research program directed toward maximizing the advantages of
refrigerant compressors. The study of lubrication characteristics in the critical sliding component is essential for the design
of refrigerant compressors. Therefore, theoretical investigation of the lubrication characteristics of a rotary compressor
being used for refrigeration and air-conditioning systems was investigated. The Newton-Raphson method was used for a partial
elastohydrodynamic lubrication analysis between the vane and the rolling piston of a rotary compressor. The results demonstrated
that the vane thickness and the center line position of the vane significantly influenced the friction force and the energy
loss between the vane and the rolling piston. 相似文献
15.
In this article, numerical analyses of hydrodynamic lubrication and dynamics of the crank, rolling piston, and vane were carried out to study the tribological performance of a rotary compressor. Dimensionless Reynolds equations of journal and thrust bearings in dynamic load condition were derived and solved numerically. To deal with the lubrication of the rolling piston, the effect of the nonuniformity of tangential velocity over the bearing surface on the Reynolds equation was taken into account. In addition, combined with the analyses of dynamics and kinematics of the crank, piston, and vane, the angular velocities of the crank and piston as well as the motion mode between the piston and vane were studied. Analysis results illustrate characteristic oil film pressure distributions of the crank and piston bearings, which are different from that of common journal bearings. Under the influences of dynamic load and eccentricity of the cam, the wedge effect as well as the stretch and squeeze effect contribute greatly to hydrodynamic pressure. The relative motion mode between the piston and vane tip is not always pure sliding but accompanies rolling in some cases, which depends on the magnitude of the friction coefficient between the piston and vane tip. The analysis results are helpful for the improvement of rotary compressor design. 相似文献