1858, an American named hamilton smith made the world's first washing machine in Pittsburgh. The main part of the washing machine is a bucket. There is a straight shaft in the bucket with blades. You can rotate the shaft by shaking the crank connected to it. In the same year, Smith obtained the patent right of this washing machine. However, this kind of washing machine is laborious to use and harmful to clothes, so it is not widely used, but it marks the beginning of washing clothes with machines. The following year, a washing machine with a pestle as a stirrer appeared in Germany. When the pestle moves up and down, the wooden nail with spring constantly acts on the clothes. /kloc-At the end of 0/9th century, the washing machine has developed into an octagonal washing drum with a rotating handle. When washing, release soapy water into the tank. After washing clothes, squeeze them dry with a liquid tumbling device.
1874, the "era of hand washing" is facing unprecedented challenges. American Bill Black invented the wooden hand washer. The structure of Blake's washing machine is very simple, that is, six blades are installed in a barrel, which is driven by a handle and a gear to turn clothes over in the barrel, thus achieving the purpose of "washing clothes". The appearance of this device greatly encouraged those who struggled to improve their living efficiency, and the improvement process of washing machine began to be greatly accelerated.
1880, steam washing machines appeared in the United States, and steam power began to replace manpower. After hundreds of years of development and improvement, modern steam washing machines have made unparalleled progress compared with the early days, but the principle is the same. The functions of modern steam washing machines include steam washing and steam drying. Through the intelligent water circulation system, high-concentration washing liquid and high-temperature steam can be sprayed on clothes at the same time, running through the whole washing process, realizing a unique new washing method of "steam washing" in the world. Unlike ordinary drum washing machines, which need to heat the whole bucket of water, steam washing aims at deeply cleaning clothes. When a small amount of water enters the steam generating box and is converted into steam, clothes stains are decomposed by high-temperature spraying. Steam washing is quick and thorough, only requires a small amount of water, and can save time. For winter clothes that have been put in the closet for a long time and produce wrinkles and odors, they can be naturally stretched to smooth the wrinkles. The working principle of "steam drying" is to spray constant steam on clothes, spread them out, and then dry them by constant temperature condensation. In this way, heavy clothes not only dry faster, but also have the effect of stretching and ironing.
After steam washing machine, hydraulic washing machine and internal combustion engine washing machine also appeared one after another. The hydraulic washing machine comprises a washing tub, a power supply and a connector connected with a ship, wherein the washing machine is provided with a water inlet and outlet hole, a washing machine shell is provided with a power supply, the washing tub is provided with a clothes inlet hole, a sealing cover is arranged at the entrance of the washing tub, and the washing machine is connected with the ship through the connector. It does not need any electricity, only natural river power can wash clothes, freeing boat people from the trouble of washing clothes on board, saving time and reducing the intensity of housework.
19 10, Fisher Company of the United States successfully trial-produced the world's first electric washing machine in Chicago. The appearance of electric washing machine marks the beginning of human housework automation.