速冻冰盒是美国内华达州落矶研究中心的尤感·洛肯菲勒发明的。它不需要笨重的压缩机。只要有一只容器,容器内盛有金属盐,金属盐在受热时会释放氨气,被压入冷凝器中,经冷却变成液体,然后节流进入蒸发器内吸热蒸发。蒸发的氨气再返回到原先容器中, Frozen ice box is the United States Nevada Rocky Research Center in particular invented by Rockenfeller. It does not require bulky compressors. As long as there is a container, the container is filled with metal salt, the metal salt will release ammonia when it is heated, pressed into the condenser, become liquid by cooling, and then throttled into the evaporator to absorb heat and evaporate. The evaporated ammonia is returned to the original container,