Willis Haviland carril, the inventor of air conditioning, is an American and is called "the father of air conditioning". 10 was born in New York State, 1876, 1 1. After graduating from Cornell University at the age of 24, I worked as a mechanical engineer in Buffalo Forging Company, which manufactures heating systems.

In the summer of 190 1, the air in new york is hot and humid. Carrier thinks: pipes filled with steam can warm the surrounding air, so if steam is replaced with cold water, the air will blow through the water-cooled coil, and the surrounding will become cool; The moisture in the humid air condenses into water droplets, which make the water droplets drip, and finally the rest is colder and drier air.

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1902, the maintenance company Lis Haviland Carrier designed and installed the first air conditioning system. The air conditioning system was designed for a printer in new york, USA. He found that the change of temperature would cause the deformation of paper, which would lead to the imbalance of color ink. Carrier registered the patent 1906.

July 1902 Carrier, a young man who just graduated from Cornell University for one year, invented air conditioning while working in Fudge Company in Buffalo, but the original purpose of air conditioning was not to bring people a comfortable living environment, but to serve some dead things.

It is said that one of Buffalo's customers, William Printing Factory in Xiakete, new york, has a printing machine that causes the paper to expand and contract due to the change of air temperature and humidity, and the ink is misplaced, so that it can't print clear color printed matter. So I turned to Buffalo Company. Carrier thinks that since air can be kept warm by coils filled with steam, why not use air to cool down by coils filled with cold water? The moisture in the air will condense on the coil, so that the air in the factory will be cool and dry.

Based on this concept, Carrier achieved good results through practice, and the world's first air conditioning system was born. It is worth mentioning that in the first 20 years after the invention of air conditioning, the object of enjoying air conditioning has always been machines, not people, mainly used in printing houses and textile mills.

Carrier introduced the first generation of household air conditioners in 1928, and it was not until the end of World War II that household air conditioners entered thousands of households in more developed countries.