冷蔵庫用レシプロ圧縮機の振動低減対策

（非線形ばねを用いた支持方法に関する検討）

抄録

From the viewpoint of energy efficiency, it is necessary to set the operating rotation range of a reciprocating compressor mounted on a household refrigerator low. On the other hand, there is a problem that when the reciprocating compressor is operated in a low rotational speed region, large vibration is generated by resonance. Therefore, in order to suppress the vibration transmitted from the reciprocating compressor to the refrigerator, the method of changing the natural frequency of the compressor to a frequency lower than the operating speed range was examined. Among them, a support element using a nonlinear spring was proposed, and the effectiveness of the new support element was verified by actually supporting the reciprocating compressor and performing drive experiments. As a result, with the support element using a nonlinear spring, although it was possible to reduce the natural frequency of the compressor, it was not possible to exclude all the natural frequencies from the operating region. However, even if resonance occurs in the compressor, the vibration transmission to the base is very small, and it is confirmed that the vibration reduction effect is high in the operating rotational speed region lower than that when supported by the rubber bush. In the future, in order to clarify the mechanism by which the vibration is reduced, it is planned to study the influence of the rigidity of the support element on the vibration mode by investigating the vibration mode generated between the compressor and the base in detail.