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Étude expérimentale des caractéristiques de sortie d’un compresseur linéaire à soupape équipé avec connexion intermittente des chambres de compression et de contre-pression.

Experimental study on the output characteristics of valved linear compressor with intermittently connecting compression chamber and back chamber.

Auteurs : DING L., SHA X., HU R., LIU S., JIANG Z., WU Y.

Type d'article : Article de la RIF

Résumé

Piston offset will affect the output characteristics of valved linear compressors. It will lead to reduced effective piston stroke and increase the risk of cylinder collision. In order to suppress the piston offset, the compression chamber and the back chamber are intermittently connected by a external bypass pipe, and the connection time is controlled by a solenoid valve. The effect of solenoid valve operating frequency on the offset value and compressor output characteristics was studied. The results show that the piston offset can be effectively suppressed when the bypass pipe is connected at high frequency (≥1 Hz). Meanwhile, the effective stroke is increased by about 1.49 mm, the pressure ratio is increased by 10.7 %, and the mass flow rate is increased by 14.2 %. Moreover, the suppression effect of piston offset remains basically unchanged when the operating frequency of the solenoid valve exceeds 1 Hz. Another interesting result is that the higher the frequency of the solenoid valve operation, the smaller the fluctuation caused by this method. This research provides a basis for machining the anti-offset hole in the piston instead of the external bypass pipe to suppress the offset.

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Format PDF

Pages : 340-348

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Détails

  • Titre original : Experimental study on the output characteristics of valved linear compressor with intermittently connecting compression chamber and back chamber.
  • Identifiant de la fiche : 30033483
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 170
  • Date d'édition : 02/2025
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2024.12.006

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