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Modeling study demonstrates improved compression efficiency and reduced structural size in vortex compressors for portable oxygen systems, highlighting benefits for compact mechanical designs.
Based on the structural characteristics of asymmetric vortex compressors, a structure of asymmetric variable diameter base involute vortex comprwessors is proposed, and performance analysis is conducted for vortex compressors used in portable oxygen production systems. According to the normal equidistant method, the volume calculation formula for a variable diameter base circle involute vortex disc with both inner and outer profile angles was derived. An asymmetric variable diameter base circle involute vortex disc model with equal content product ratio was established, and its performance was compared with that of an asymmetric circular involute vortex disc under certain conditions. The results showed that, while ensuring the same compression ratio, the structural size of the model was reduced by 7.58 %, the area utilization rate was reduced by 7.47 %, and the material was more economical. Meanwhile, the gas force was reduced, and the mechanical properties were better. Under the condition of ensuring the same size, the suction volume of the model increased by 8.98 % and the compression ratio increased by 16.3 %, indicating better working performance. This study could provide theoretical reference for the design of vortex compressors in specific scenarios.
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Li et al. (2026) studied this question.
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