Torsional vibration factor analysis and reduction for refrigerator equipped with top-mounted compressor

Abstract

In this study, we attempted to decrease door vibration of a refrigerator in which the compressor was installed at top area for good usability. Through the operational test, the door vibration was found to be large at 18 rps. For the factor analysis, vibration mode analysis and operational transfer path analysis were applied. The result showed that the refrigerator twist mode at 18 Hz and the compressor vibration behavior along left-right direction were observed to be the main factor increasing the door vibration at 18 rps. Then, we inserted a steel plate between the compressor and the body along left-right direction to constrain the compressor vibration along the direction. As the result, the door could be reduced decreased largely effectively by the attachment of the bar.