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1、 毕业设计中英文翻译 学生姓名： 学号： 学 院： 专 业： 指导教师： 2012 年 6 月 韩雷 080203428机械工程与自动化学院 过程装备与控制工程 崔宝珍 PDF 文件使用 “pdfFactory Pro“ 试用版本创建 The discussion of washing machine and PLC The reason why a washing machine like this can wash and get the water out of the clothes at the same time is because it has a double layer d
2、rum. When washing and rinsing, the pulsator spins and makes the water swirl. To get the water out of the clothes, the inner wall f the drum spins and the water goes through the holes. These days, the “centrifugal force washing machines” are quite popular. This type of machine does not use a pulsator
3、. Instead, the inner wall spins really quickly. When the drum spins, the dirty clothes get stuck to the wall. The water and detergent also try to escape through the holes of the wall but before they do so, they are forced to escape through the clothes. When this happens, the power of the water and d
4、etergent removes the dirt form the clothes. Another good thing about this type of machine is that clothes dont get tangled up so you dont have to worry about your clothes getting ripped or damaged. Next, lets look at some different types of washing machines! Many of you probably think that the water
5、 inside washing machines goes round and round. Actually, different washing machines make water flow in different ways. Whirlpool type This type of washing machine uses a pulsator to force the water to move like a whirlpool inside the Drum. The spinning water forces the dirt out form the clothes insi
6、de the machine. Some of the newer models of this type also make the whirlpool move up and down to make it clean clothes even better! Agitator stirring type This type of washing machine has something that looks like a propeller at the bottom of the tub. This Propeller spins around and stirs the water
7、. The water then forces the dirt out from the clothes in the machine. The PDF 文件使用 “pdfFactory Pro“ 试用版本创建 good thing about this type of machine is that clothes do not get tangled up and clothes get evenly washed. Drum type This type of machine has a drum with many holes in it. There are also protru
8、sions bumps on the wall of the drum. As the drum turns, the clothes are picked up by the protrusions. When the clothes fall down from the top of the drum through the water, the movement removes dirt from the clothes. Centrifugal force type As we have said before, the spinning drum pushes the water a
9、nd detergent out through the wall of the inner drum. The power that comes form spinning the drum is called centrifugal force., which is where the name comes from. The water is forced through the clothes and then the holes in the inner wall. After one cycle, the water is recycled back into the tank a
10、nd the process starts again. This cycle is what cleans the clothes! In Japan, people first started using machines in 1930. But then the price of a washing machine was so high that most average persons could not buy one for their homes. Looking back now, there was something strange and funny on some
11、of the first versions of the washing machine .The machine had two rollers that were used to sandwich each shirt and other clothes to squeeze the water out of them. The rollers were turned by hand, and in fact, you needed a lot of strength to turn those things! Still, people then thought it was a rea
12、lly neat invention! This type of water squeezer was used for almost 30 years until something new came along. The spin drier that used “centrifugal force” to get most of the water out of the clothes. In 1953, the nozzle type washing machine was first sold in Japan. This washing machine is like the ol
13、der brother of the swirling washing machine that you see today. The price of these washing machines was lower and because of this, more people bought them. The first fully automatic washing machine was introduced in 1968, and after that, washing clothes PDF 文件使用 “pdfFactory Pro“ 试用版本创建 became a lot
14、easier to do! There are a lot of different types of washing machines. What kind of washing machine do you have in your house? Fully automatic: The fully automatic machine has two drum layers that wash, rinse and remove water from clothes together. All you have to do is add detergent and put in dirty
15、 clothes and then washing machine will do the rest. There is also a new type of fully automatic washing machine that can dry clothes after they have been washed. Twin tub: This washing machine has one part that dose the washing and another part that does the squeezing. Even though its a hassle to take the clothes out and move them to other tub, the good thing is that you can wash and squeeze at the same time with one machine. Front loading: The main feature of front loaders is that they use a lot less water than other types. This is the type of Washing machine that dry cleaners use but
