Nowadays, every home has a refrigerator to keep food fresh. People have known for a long time that a cold environment is best for food preservation. But until the end of the 19th century, only wealthy people who built icehouses could enjoy this benefit. What most people want is a refrigerator.
An American working in England, Jacoby Perkins, made a discovery that led to the invention of the refrigerator. In 1834 he discovered that when certain liquids evaporate, there is a cooling effect. Perkins asked a team of mechanics to create a working model that would prove the idea.
Sure enough, the device actually produced some ice one night. The technicians excitedly jumped into a carriage with ice in hand and sped to Perkins' house to show him what they had achieved.
Perkins was already old and did not sell his invention on the market. The person who sold the invention was John Harrison, a Scottish printer living in Australia.
Harrison probably discovered the cooling effect without knowing Perkins' results. He used ether to clean metal printing type and one day noticed the cooling effect of the substance. By 1862, his first refrigerators were on the market. Harrison also set up the first refrigeration workshop at a brewery in Bendigo, Victoria.
Also attached: German engineer Carl von Linde built the first household refrigerator in 1879. But before the electric refrigerator was invented in the 1920s, refrigerators did not enter households on a large scale.
There are many theories about the invention of the refrigerator, such as: Domelre, who was born in Chicago, USA in 1913 It was the first domestic refrigerator. It is more commonly said that Swedish engineers Balzer von Platen and Carls Munters took the lead in making the first refrigerator and sold the patent rights to the American Ronghua Company. However, they invented the refrigerator in 1921 respectively. , 1923, 1926