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Étude par simulation FSI d’un compresseur rotatif au R-32 avec injection de vapeur par une soupape supplémentaire.

Investigation on a R32 rotary compressor with vapor injection by supplementary valve based on FSI simulation.

Auteurs : ZENG W., PAN X., CHEN J., XIE J.

Type d'article : Article de la RIF

Résumé

Rotary compressors with vapor injection are widely used in heat pump systems at low temperature. The valve motion is critical to the performance and reliability of rotary compressors. Injection pressure and supplementary valve lift are important factors directly affecting valve motion. Based on a compressor prototype, this paper presents a fluid–structure interaction (FSI) model to simulate the working process of the compressor and the motion of two valves. The fracture location of the discharge valve plate (DVP) highly matches the stress con centration region in the FSI simulation results, confirming its accuracy. The simulation results show that without injection at low evaporation temperatures, the DVP exhibits insufficient movement with almost no fully-opening period. When vapor injection is enabled, an increase in injection pressure accelerates the pressure rise in the compression chamber, enhances the supplementary mass flow rate by approximately 30 %, and nearly doubles the fully-opening period of DVP, thereby facilitating a smoother discharge process. Increasing supplementary valve lift has limited impact on the DVP motion, with its primary effect being an increase in the supplementary f low rate by about 5 %. The supplementary valve velocity is equivalent to that of the DVP, and the valve plate has a larger rebound.

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Format PDF

Pages : 13 p.

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    20 €

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    Gratuit

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Détails

  • Titre original : Investigation on a R32 rotary compressor with vapor injection by supplementary valve based on FSI simulation.
  • Identifiant de la fiche : 30034489
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 181
  • Date d'édition : 01/2026
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2025.10.024

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