The Development Process Of Refrigerators
But as early as 1800, Thomas Moore, a Maryland farmer with a gift for invention, found the right way. He owns a farm about 20 miles from Washington, where the village of Georgetown is the market center. When he used the refrigerator he designed to transport butter to the market, he found that customers would walk past the rapidly melting butter in the barrels of competitors and give him a higher price than the market price. It was still fresh and firm, neatly cut into pieces. A pound of butter. Moore said that one of the benefits of his refrigerator is that farmers don’t have to go to the market at night to keep their products cold.
In 1822, the famous British physicist Faraday discovered that gases such as carbon dioxide, ammonia, and chlorine would turn into liquids under pressurized conditions, and they would turn into gases when the pressure was reduced. In the process of changing from liquid to gas, it will absorb a lot of heat, causing the surrounding temperature to drop rapidly. Faraday’s discovery provided a theoretical basis for the invention of artificial refrigeration technologies such as compressors. The first artificial refrigeration compressor was invented by Harrison in 1851. Harrison is the boss of Australia's "Geelong Advertising". When he used ether to clean the typeface, he found that the ether had a strong cooling effect when it was coated on the metal. Ether is a liquid with a very low boiling point, and it is prone to evaporation and heat absorption. Harrison developed a refrigerator that uses ether and a refrigerator pressure pump after research, and applied it to a winery in Victoria, Australia, for cooling and cooling during brewing.
In 1873, German chemist and engineer Karl von Linde invented a refrigerator using ammonia as a refrigerant. Linde uses a small steam engine to drive the compression system, which causes the ammonia to undergo repeated compression and evaporation to produce refrigeration. Linde first applied his invention to the Seedumar brewery in Wiesbaden, designing and manufacturing an industrial refrigerator. Later, he improved industrial refrigerators. To make it miniaturized, in 1879, the world's first artificial refrigeration household refrigerator was manufactured. This steam-powered refrigerator was quickly put into production, and by 1891, 12,000 units had been sold in Germany and the United States.
The first refrigerator that used an electric motor to drive a compressor was invented in 1923 by Swedish engineers Brighton and Mendes. Later, an American company bought their patent and produced the first batch of household refrigerators in 1925. The electric compressor and refrigerating box of the original refrigerator were separated. The latter was usually placed in the home's kiln or storage room, connected to the electric compressor through a pipe, and later merged into one. Before the 1930s, most of the refrigerants used in refrigerators were unsafe, such as ether, ammonia, sulfuric acid, etc., or they were flammable, corrosive, or irritating. Later, I began to search for a safer refrigerant, and finally found Freon. Freon is a non-toxic, non-corrosive and non-flammable fluorine compound. It soon became a refrigerant in various refrigeration equipment and has been used for more than 50 years. However, it was discovered that Freon has a destructive effect on the ozone layer of the earth's atmosphere. So people began to look for new and better refrigerants.
