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最近,由美国洛斯阿拉莫斯国家实验室物理学家约翰·惠特利领导的研究组正在研制一种世界上最独特的冰箱.这种冰箱既不需要压缩机,也不需要电动机或是结构复杂的管道装置,因为这种实验性冰箱只不过是用声波来产生低温的. 这种声学冰箱的结构非常简单.目前的试制模型只不过是一个内部装有一些长方形玻璃纤维板的3英尺长的圆筒.向圆筒内注入氦气或其他气体,将一端作永久性封闭,并在另一端用一弹性薄膜加以密封.该薄膜上装有磁铁、音圈和导线,实际上就是一只扬声器,它可迅速振动并将声波送入圆筒内.在这种情况下,筒内的状态开始发生变化.
Recently, a team led by John Whitley, a physicist at Los Alamos National Laboratory in the U.S., is developing one of the world’s most unique refrigerators that requires neither a compressor nor an electric motor or structure Complex piping, since the experimental refrigerator is only made of low temperature sound waves.The structure of the acoustic refrigerator is very simple.The present trial model is just a 3-foot long glass fiberboard Cylinder. The cylinder is filled with helium gas or other gas, one end of the cylinder is permanently closed, and the other end is sealed with a flexible film containing magnet, voice coil and wire, which is actually a loudspeaker, It vibrates rapidly and sends sound waves into the cylinder, in which case the state of the cylinder begins to change.