We developed a new compression mechanism named "ellipse compressor", which can be used in air conditioning and refrigeration. This compression mechanism is basically rotary type machine without vane, which consists of four major components: crankshaft, rotating piston, rotating cylinder and casing. We carried out the theoretical analysis of the ellipse compressor and the dynamic analysis on moving parts. Then, volumetric change characteristics of compression chamber, compression torque characteristics, and contact-forces between sliding parts were made clear. The computer calculations showed that the ellipse compressor potentiality exhibits a high reliability in HFC refrigerant, because of low wear without extreme large force on the sliding parts. This paper presents the new compression mechanism, the theoretical dynamic analysis and the performance evaluation results of the ellipse prototype compressor for R410A refrigerant.
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