Principle of vacuum cleaner

Working principle of vacuum cleaner: The motor of vacuum cleaner rotates at high speed, and air is sucked from the suction port, so that a certain vacuum is generated in the dust box. Dust enters the dust bag in the dust box through the floor brush, suction nozzle, handle, hose and main suction pipe, and the dust remains in the dust bag. The filtered air enters the motor through a filter screen, which is a protective barrier to prevent the dust bag from breaking and the dust from being sucked into the motor. Air entering the motor flows out through the motor. Due to the continuous wear of the carbon brush during the operation of the motor,

The finer the filter material, the cleaner the air can be filtered, but the worse the air permeability, which affects the air intake of the motor and reduces the efficiency of the vacuum cleaner. But for users, comfort and cleanliness are the main things.

Its air permeability is low, so it is wavy to increase the air permeability area. Some of these filter materials can be washed repeatedly. Any filter material has a "lifetime", that is, the micropores of the filter material have been blocked by fine dust particles after long-term use. Therefore, the paper dust bag is an ideal disposable sanitary and convenient bag. After bag dust removal, the fiber will become hard, which will affect the filtration effect and ventilation effect. SMS three-layer composite filter material is washable, but its air permeability is slightly lower.

Extended data

Since the middle and late 1990s, the sales of vacuum cleaners in China have increased by 38% every year. Nowadays, vacuum cleaners not only have more functions, more beautiful appearance and cheaper price, but also are loved by many citizens.

In the context of the global financial crisis and the slowdown of economic growth, small household appliances stand out in the domestic household appliance industry where the overall growth rate has declined. In 2008, the sales of domestic small household appliances enterprises increased significantly in the first three quarters. From June 5438+0 to June 5438+0 in 2008, the output of vacuum cleaners reached 5.65 million, down 12.7% year-on-year.

In 2007-20 1 1 year, China's small household appliances market will continue to increase in volume, with a growth rate of around 7%. It is estimated that the market scale will reach 18 1 100 million yuan in 20 1 year.

Baidu encyclopedia-vacuum cleaner