冷蔵庫用圧縮機の低振動化に向けた自立支持方式の提案

稲垣 耕, 盆子原 康博, 近藤 孝広, 池 美慧, 濵畑 貴之

研究成果: Contribution to journalArticle査読

抄録

<p>In household refrigerators, the rotational speed of a reciprocating compressor can be appropriately adjusted according to the temperature inside of the refrigerator. The lower rotational speed reduces the power consumption of the compressor. However, several natural frequencies of the compressor exist in the low rotation region, and besides, the unbalance force arising from the piston motion acts on the internal drive unit. Thereby the vibrations of the compressor are likely to be larger due to the resonance in the low rotation region. In this study, a method for supporting the drive unit inside the shell, which is called "the self-standing support" is newly proposed in order to reduce the vibration of the compressor drastically. In the proposed method, a spherical support element is utilized instead of coil springs to support the drive unit. And the drive unit can maintain a stable self-standing state by acting restoring moment due to the gravity while it is directly placed on the shell. The natural frequencies of the compressor can be greatly reduced by decreasing the support stiffness for the drive unit in comparison with the support method using coil springs. Furthermore, in designing the drive unit, the application point of the exciting force is matched with the center of percussion to the contact point on the spherical support. As a consequence, the periodic restraining force acting on the contact point can be minimized. By these two features, it is possible to considerably reduce the vibration transmission from the drive unit to the shell. In the present study, a simplified model for a reciprocating compressor is treated, and the effectiveness of the self-standing support is investigated analytically and experimentally.</p>
寄稿の翻訳タイトルProposal of self-standing support method for vibration reduction of refrigerator compressors
本文言語日本語
ページ(範囲)18-00004-18-00004
ジャーナル日本機械学会論文集
84
862
DOI
出版ステータス出版済み - 2018

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