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Amélioration des caractéristiques dynamiques du compresseur monovis avec rotor à vis à rainures irrégulières.

Dynamic characteristics improvement of the single screw compressor with odd-grooves screw rotor.

Auteurs : PENG C., WU W., ZHANG Z., XIE J., FENG Q., HE Z.

Type d'article : Article de la RIF

Résumé

Recently, the single screw compressor (SSC) has been applied in the low-temperature heat pump system with the purpose of achieving higher system efficiency. However, the traditional SSC with even-grooves screw rotor behaves high torque fluctuation to the motor, thanks to its work synchronously and doubled compressed gas-induced torque on the screw rotor axis. It is more serious in the low-temperature heat pump system because of the higher pressure ratio. In this paper, an odd-grooves screw rotor design is proposed to smooth the compressed gas-induced torque on the screw rotor axis, by arranging the two compression chambers work alternatively. A dynamic model for the screw rotor is established to calculate the gas force and the gas-induced torque on screw rotors under different working conditions. The results show that the odd-grooves screw rotor design can remarkably reduce the gas-induced torque fluctuation of the SSC. Meanwhile, the maximal load on the bearing caused by the odd grooves design could be controlled below the maximum allowable load of the bearing.

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Format PDF

Pages : 100-108

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    20 €

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    Gratuit

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Détails

  • Titre original : Dynamic characteristics improvement of the single screw compressor with odd-grooves screw rotor.
  • Identifiant de la fiche : 30029217
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 132
  • Date d'édition : 12/2021
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2021.09.005
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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