Refrigerator freezer room temperature can be set at 3-4 degrees, this temperature is conducive to the preservation of food, can be kept fresh for 3-5 days (the temperature of the preservation room should not be too high, otherwise the effect of preservation). Refrigerator if there is a freezer (greenhouse), the temperature can be set at 0 degrees or 1 degrees, this temperature that will not freeze (frozen), but also to refrigerate food. Refrigerator freezer can be set at -18 degrees Celsius, this sub-zero temperature, in the emergency freezing, is relatively fast, is conducive to accelerate the rapid thawing of food. The above refrigerator temperature settings can be constant all year round.
The refrigerator (refrigerator) is to maintain a constant low temperature of a refrigeration equipment, but also a kind of food or other items to maintain a constant low temperature cold state of civilian products.
The refrigerator cabinet has a cabinet or box in which ice is made by a compressor, an ice maker, and a storage box with a refrigeration unit. Its invention can be traced back to the nineteenth century, and the world's first artificially cooled household refrigerator was born in 1879, after years of development and innovation, China in the second half of the 1950s began to produce household refrigerators.