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Development of high efficiency dual-cylinder-type rotary compressors.

[In Japanese. / En japonais.]

Author(s) : SAITOH K., HAGIWARA S., FUJIMOTO S., KONISHI S., MINAMIBATA F., MAEKAWA T.

Type of article: Article

Summary

The authors conducted numerical and experimental analysis to improve the efficiency of dual-cylinder rolling-piston-type rotary compressors by varying cylinder height, diameter and eccentricity and by developing a simulator for obtaining the optimum combination of cylinder dimensions. As a result, the lower ratio of cylinder height to diameter tends towards higher efficiency. The experimental results correspond to the numerical analysis. The investigation included the reduction of superheat loss during the suction process of a compressor with a thermally isolated cylinder, and the attaining of optimum design conditions for an eccentric bearing. The numerical and experimental results show that a thermally isolated cylinder and an eccentric bearing with optimum design are effective for high efficiency. The results show that the total efficiency of a 3/4-ton prototype dual-cylinder rotary compressor with these effective improvements is higher than that of a conventional single-cylinder type with equivalent capacity.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1994-1547
  • Languages: Japanese
  • Source: Trans. JAR - vol. 10 - n. 2
  • Publication date: 1993
  • Document available for consultation in the library of the IIR headquarters only.

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