冷凍機用電動往復振動型圧縮機の挙動解析

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  • Analysis on behavior of an electromagnetic reciprocating vibratory compressor for a refrigerator

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<p>In this study, analysis is conducted on behavior of an electromagnetic reciprocating vibratory swing compressor. The governing equations of the swing compressor are derived in terms of motions of piston with coil and motor assembly and current induced in the electric circuit. Electromagnetic coupling is also considered between the vibrations of a spring-piston system and the electric circuit which consists of a coil and a resistance. First, the analytical model is introduced with the vibration system with two degrees of freedom. The expansion and compression processes of refrigerant are assumed as polytropic processes. The polytropic indices are estimated by experiments. The parameters such as damping and hysteresis loss of iron core are obtained and identified by preliminary experiments. Next, the numerical results are compared with the experimental results to verify the analysis presented in this study. Good agreements are found between numerical and experimental results which verify our analysis.</p>

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