关键词: 碰撞噪声, 能量守恒, 弹性势能, 冰箱

Abstract: Through the theoretical analysis on the mechanisms of refrigerator drawer impact noise. We analyze the method of reducing collision noise according to the energy conservation law and the following procedures are used, i.e. , reduction into the spring elastic coefficient and self-locking stroke to reduce the initial elastic potential energy, the increaseof the equivalent friction coefficient of slide to improve friction dissipation, and change of the material property of the gasket to increase the damping dissipation. The experimental results show that the three measures have good optimization effect. The experimental results confirm the conclusion of theoretical analysis, and provide a credible design basis for the development and improvement of the impact noise of refrigerator.

Key words: Impact noise, Energy conservation, Elastic energy, Refrigerator