The etymology of Fridge takes us to the Latin word refrigerator, which refers to that which cools. Refrigerator is called camera, the artifact or the household appliance what generates cold to allow the preservation of food and other items.
A refrigerator, therefore, can be a industrial facility intended for low temperature storage of vegetables, fruits or meats. These products are stored in a refrigerator until they are distributed and marketed: in this way, given that they are perishable foods, they avoid spoiling before reaching consumers.
When the meat obtained after the sacrifice of a animal remains at room temperature, suffers the attack of microorganisms that degrade tissues. If this action progresses, the meat rots and is no longer edible. On the other hand, when the meat is placed in a refrigerator at a low temperature, the microorganisms cannot act in the same way and the deterioration is interrupted.
Beyond meat, fruits, vegetables, flowers and eggs are also often stored in refrigerators. The temperature and the humidity conditions vary according to the needs of each product.
It is important to mention that, in some regions, the notion of refrigerator refers to the appliance that in other places is known as fridge, refrigerator, fridge or refrigerator. It is a device present in all houses since it serves to store the food at low temperature, delaying its degradation.
These refrigerators generally have a compartment with a temperature between 2nd Y 6 ° C. They can also have an additional space called freezer or freezer, whose temperature is -18 ° C.
History of the domestic refrigerator
Although nowadays it is almost impossible for us to do without a refrigerator at home, and for that reason we take for granted that we will always have a place to store our perishable food, we must not forget that until almost three centuries ago people did not have this appliance and had to find other ways to keep their products.
It is true that many people eat ingredients that they collect directly from their natural environment and do not require artificial refrigeration, but there are also those who make periodic purchases in the market and then store dozens of different products in the refrigerator to prevent them from spoiling. . In the past, to overcome the lack of this appliance, certain very cold caves were ideal, although deep wells were also used where large quantities of ice.
These and other conservation methods led to the invention of so-called ice houses, a space that used to be built in the vicinity of a reserve of Water. There the natural ice and snow of the colder seasons were used to refrigerate food during the rest of the year. Time passed and at the beginning of the 19th century the engineer Thomas mooreBorn in the United States, he created the first version of the domestic refrigerator, which was based precisely on the concept of the ice house.
Moore’s home refrigerator was a heat-insulating chamber that required a load of ice blocks to cool food. Half a century earlier, the Scottish physicist William cullen had come up with the formula to create a cold pack, something that only in 1805 took advantage of Oliver Evans, a inventor North American, to design a more advanced refrigerator, based on vapor compression, although it was not successful. Almost three decades passed until another scientist, also an American Jacob Perkins, invented and patented the first refrigerator model based on the discoveries of Cullen and Evans. Another important contribution came in 1844, when the doctor John gorrie managed to outperform the Perkins model.