99 years ago today, December 7, 1926 (November 3, 1926, the first refrigerator was protected by a U.S. patent. On December 7, 1926, the first refrigerator was protected by a U.S. patent. A small cabinet or compartment that keeps food or other items cold. A cabinet or box with an ice maker for freezing. A storage box with refrigeration. The volume of a household refrigerator is usually 20 to 500 liters. In 1910, the world's first compression refrigeration household refrigerator was introduced in the United States. In 1925, the Swedish company Lido developed a household absorption refrigerator. In 1927, General Electric Company of the United States developed a fully enclosed refrigerator. In 1930, air-cooled continuous diffusion absorption refrigerators using different heating methods were put on the market. In 1931, a new refrigerant Freon 12 was successfully developed. In the second half of the 1950s, the production of domestic thermos began. China has been producing refrigerators since the 1950s. The refrigerator, also known as the ice bucket, was developed from the ancient "ice mirror" and has clear functions. It can not only preserve food, but also emit cold air to cool the room. It is an invention and creation of ancient people and reveals to us a side of ancient life. Bingjian is an ancient container for holding ice. "Zhou Li¡¤Tianguan¡¤Ling":"Sacrifice together (offering) ice lessons. "It can be seen that there were primitive refrigerators in the Zhou Dynasty, but ice was not always available throughout the year, especially in the hot summer, when ice was extremely precious. There are many wood-body refrigerators from the late Qing Dynasty handed down from the past. Most of them are made of relatively delicate wood such as mahogany, rosewood, and cypress. This piece is made of mahogany, imitating a bamboo weave style and is exquisitely made. The shape is a large mouth and a small bottom, and the appearance is like a bucket. Lead leaves are inlaid in, and there are small water drainage holes at the bottom. The structure is similar to a wooden barrel. Lift rings are arranged on both sides of the refrigerator box, a cover plate is arranged on the top, and double coin holes are opened on the top, which are both hands and cold air outlets. In order to keep the refrigerator at a certain height for easy access to ice cubes and food, it is equipped with a box seat. This pair of refrigerators is of standard construction, and the barrel and base are beautifully decorated. Made in pairs, it should be used by large families. From an economic perspective, artifacts with high value at that time must have higher value than artifacts with lower value in the past that have also been passed down to today. This is true today, and it will be true in the future. This is an important way to choose collectibles. This is particularly useful for people who want to collect refrigerators. Because in ancient times, even at the end of the Qing Dynasty, it was extremely difficult to get cool ice in the hot summer due to the lack of ice-making equipment. Although there were methods of digging ground to store ice in ancient times, the luxury of ice must not be enjoyed by ordinary people. People who can use a refrigerator must have no worries about food and clothing. In society at that time, wealthy families were definitely a minority. Those who could afford mahogany furniture might not necessarily be able to use refrigerators made of mahogany. This is why refrigerators have high collection value. Not only that, but their future significance will be even more important. Comments: Household appliances indispensable for food preservation