Harrison, the owner of Quilen Advertising, an Australian newspaper, used ether to clean the type and found that the ether coating on the metal had a strong cooling effect. Ether is a liquid with a very low boiling point, which is easy to volatilize and absorb heat. Harrison developed the first artificial refrigeration compressor by using ether and pressure pump in 185 1, and it was used in a meat freezing factory and a brewery in Victoria, Australia. Since then, this kind of refrigerator has industrial value.
1873, German engineer and chemist Karl von Linde invented a refrigerator with ammonia as refrigerant. Linde uses a small steam engine as the power source to drive the compression pump, which makes ammonia repeatedly compressed and evaporated to produce refrigeration. Linde first applied his invention to Sai Doummar Brewery in Wiesbaden, and designed and manufactured an industrial refrigerator. Later, he reformed the industrial refrigerator to make it smaller, and in 1877, he made the world's first domestic refrigerator with artificial refrigeration. By 189 1, Linde has sold 12000 refrigerators in Germany and the United States.
1923, Swedish engineers Brighton and Mendes invented the world's first refrigerator driven by a motor, which is the first refrigerator for human beings. Later, they sold the patent right to Ronghua Company in Chicago, and 1925 produced the first batch of household refrigerators. In the first refrigerator, the electric compressor and the food box were separated, and the latter was placed in the cellar or storage room of the family, and then connected with the electric compressor through pipes, and then merged into one.
It should be noted that the great development of refrigerators actually turned around when humans began to use freon as refrigerant.