There are many theories about the invention of refrigerator, such as: 19 13, which was born in Chicago, USA, Domelre was the first one. It is widely said that Swedish engineers Balser von Plantan and Karl Mont took the lead in making the first refrigerator and sold the patent right to the American company Ronghua Company. However, they invented the refrigerator in 192 1, 1923, 1926 respectively.