Rotary compressors applied to heating and cooling cycles accounts for a large proportion of the total energy consumed in the system. Therefore, improving compressor efficiency is crucial in order to reduce energy consumption. Design review and improvement efforts have primarily focused on compression and discharge parts with high pressure. However, due to the limitations in design improvements for the compression and discharge parts, enhancements for other components are necessary to further increase compressor efficiency. In this study, the design of the suction part of the rotary compressor was modified using FSI (Fluid-Structure Interact) analysis scheme. In order to improve the design of the suction shape, new suction shape types were devised as alternatives to the existing through type. Both the newly devised C-type and E-type suction shapes presented an increase in cooling capacity due to reduced suction resistance, with the E-type demonstrating greater improvement compared to the C-type. Consequently, a verification of the effect based on the detailed design dimensions was further conducted for the E-type suction shape. The final selected improved model increased the suction flow rate by approximately 2.5% compared to the base model. This indicates that significant improvement for the compressor efficiency can be achieved through modifying designs in parts other than the compression and discharge sections. In addition, a design improvement process was established to analyze internal flow using FSI analysis.

中文翻译：

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旋转式压缩机吸气形状的设计改进

用于加热和冷却循环的旋转式压缩机占系统总能耗的很大一部分。因此，提高压缩机效率对于降低能耗至关重要。设计审查和改进工作主要集中在高压压缩和排放部件上。然而，由于压缩和排出部件的设计改进有限，需要对其他部件进行改进以进一步提高压缩机效率。在这项研究中，利用FSI（流固耦合）分析方案修改了旋转式压缩机吸入部分的设计。为了改进吸力形状的设计，设计了新的吸力形状类型作为现有直通型的替代品。新设计的C型和E型吸入形状均因吸入阻力降低而提高了冷却能力，其中E型与C型相比表现出更大的改进。因此，针对E型吸力形状，进一步根据详细设计尺寸进行了效果验证。最终选定的改进型号相比基础型号增加了约2.5%的吸入流量。这表明，通过修改压缩段和排气段以外的部分的设计，可以显着提高压缩机效率。此外，还建立了设计改进流程，以使用 FSI 分析来分析内部流动。