The refrigerator, refrigerator or refrigerator, as we know it today, was invented in 1913, but it was from 1923 , when Frigidare created the first autonomous unit , that began to be introduced into our homes .Starting in 1956 the system for closing the doors of the refrigerators changed, discarding the old handles. Do you know why the refrigerator doors are magnetic? This change was made to save lives.
Do you know why the refrigerator doors are magnetic? To save lives!
A refrigerator is considered to be a closet, thermally insulated , with a main compartment in which a constant temperature between 2º and 6º is maintained.have a secondary compartment in which the temperature is below 0º for freezing.In order to keep the cold inside, the door must be sealed.
The first refrigerators, to get the door to be tightly closed carried a handle that secured it and did not let the cold escape, however, it was soon seen that this was a problem .There were several cases in which children, playing , had hidden inside the fridge and suffered serious hypothermia and even lost his life . From inside , once the door was closed, it was impossible to open it again .
Looking for a solution to save those lives that by innocent mischief were lost every year, General Electric found the solution.Fit to the doors of its refrigerators a closing based on magnetic strips efficient enough to keep the door sealed and at the same time allow opening from the inside.
In 1956 in the US, the Refrigerator Safety Act was passed that prohibited the manufacture of refrigerators with handle and forced to adopt the magnetic closure system.The General Electric patent was unlocked so that all manufacturers could use this new and safe method.
He also forced himself to dispose of the old refrigerators in an orderly manner, because due to the abandonment of old refrigerators in lots, accidents had occurred with children inside.From the enactment of that law, were significantly reduced , in successive years, the so-called " refrigerator deaths ".
Inquiring about the issue of choking deaths in the fridges we found a curiosity, do you know why it costs so much to open the refrigerator for the second time in a short period of time? It is because of the vacuum that is created inside by the difference in temperatures.When you open the fridge, the outside hot air enters it, once inside it cools and its volume decreases that creates a partial void .That's why it is difficult to open it.Soon, the pressures are balanced and everything returns to normal.
If you were interested in this article, you might want to know Why do the windows of the plane have a hole?
Images: Lars Plougmann, Melissa O'Donohue, Richard Kelland
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