Analysis, modeling and simulations of an innovative sliding vane rotary compressor with a rotating cylinder

Gu Huaduo; Zhou Xiaoyu; Chen Yaping; Wu Jiafeng; Wu Zan; Jiang Yunhui; Sunden Bengt

摘要

A novel sliding vane rotary compressor with a rotating cylinder is proposed in this paper. The sliding vane dynamics analysis reveals that, compared with the traditional compressor, the friction loss at the sliding vane tips and between rotor and cylinder can be reduced to 0.25% and 10.23%. To numerically investigate the internal flow mechanism, a reliable three-dimensional simulation method is developed via Fluent 2020R1. Three pressure ratios are considered. During transient calculations, all parameters begin to fluctuate periodically after the fourth round. Both temperature and pressure for a single chamber reach the maximum near the exhaust port. As the pressure ratio epsilon p increases from 5, 10 to 15, the outlet temperature increases from 496.9, 623.0 to 754.4 K and the mass flow rate decreases from 0.03089, 0.02946 to 0.02764 kg/s, the volumetric efficiency and isentropic compression efficiency decrease, with the maximum values of 97.14% and 90.33%. The gaps between the rotor and the cylinder and at the vane tips are 0.03 and 0.01 mm, but the leakage mass of the former is one order higher than that of the latter. The research can provide guidance for the design and practical application of sliding vane rotary compressors.commentSuperscript/Subscript Available/commentABSTRACT A novel sliding vane rotary compressor with a rotating cylinder is proposed in this paper. The sliding vane dynamics analysis reveals that, compared with the traditional compressor, the friction loss at the sliding vane tips and between rotor and cylinder can be reduced to 0.25% and 10.23%. To numerically investigate the internal flow mechanism, a reliable three-dimensional simulation method is developed via Fluent 2020R1. Three pressure ratios are considered. During transient calculations, all parameters begin to fluctuate periodically after the fourth round. Both temperature and pressure for a single chamber reach the maximum near the exhaust port. As the pressure ratio epsilon p increases from 5, 10 to 15, the outlet temperature increases from 496.9, 623.0 to 754.4 K and the mass flow rate decreases from 0.03089, 0.02946 to 0.02764 kg/s, the volumetric efficiency and isentropic compression efficiency decrease, with the maximum values of 97.14% and 90.33%. The gaps between the rotor and the cylinder and at the vane tips are 0.03 and 0.01 mm, but the leakage mass of the former is one order higher than that of the latter. The research can provide guidance for the design and practical application of sliding vane rotary compressors.

机译：本文提出了一种具有旋转圆筒的新型滑动叶片旋转式压缩机。滑动叶片动力学分析显示，与传统压缩机相比，滑动叶片尖端和转子和圆筒之间的摩擦损失可以减少到0.25％和10.23％。为了在数值上研究内部流动机制，通过流畅的2020R1开发了可靠的三维仿真方法。考虑了三个压力比。在瞬态计算过程中，所有参数开始在第四轮后周期性地波动。单室的温度和压力均达到排气口附近的最大值。随着压力比εp从5,10至15增加，出口温度从496.9，623.0至754.4 k增加，质量流量从0.03089减少，0.02946至0.02764 kg / s，体积效率和等熵压缩效率下降，最大值为97.14％和90.33％。转子和圆筒之间的间隙和叶片尖端之间的间隙为0.03和0.01mm，但是前者的泄漏质量比后者的泄漏质量高。该研究可以为滑动叶片旋转压缩机的设计和实际应用提供指导。<评论>上标/下标可用摘要本文提出了一种新型滑动叶片旋转压缩机，采用了具有旋转圆筒的新型滑动叶片旋转压缩机。滑动叶片动力学分析显示，与传统压缩机相比，滑动叶片尖端和转子和圆筒之间的摩擦损失可以减少到0.25％和10.23％。为了在数值上研究内部流动机制，通过流畅的2020R1开发了可靠的三维仿真方法。考虑了三个压力比。在瞬态计算过程中，所有参数开始在第四轮后周期性地波动。单室的温度和压力均达到排气口附近的最大值。随着压力比εp从5,10至15增加，出口温度从496.9，623.0至754.4 k增加，质量流量从0.03089减少，0.02946至0.02764 kg / s，体积效率和等熵压缩效率下降，最大值为97.14％和90.33％。转子和圆筒之间的间隙和叶片尖端之间的间隙为0.03和0.01mm，但是前者的泄漏质量比后者的泄漏质量高。该研究可以为滑动叶片旋转压缩机的设计和实际应用提供指导。

Analysis, modeling and simulations of an innovative sliding vane rotary compressor with a rotating cylinder

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