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Vacuum Cleaner

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What is Vacuum cleaner?

A vacuum cleaner is a device that cleans dust and dirt from floors. Sometimes it is just called a vacuum because it uses the force of a vacuum to suck dirt into a large chamber from which it can be dumped into the garbage.

A vacuum cleaner, also known as a sweeper, is a device that uses an air pump, to create a partial vacuum to suck up dust and dirt, usually from floors, and from other surfaces such as upholstery and draperies.

The dirt is collected by either a dust bag or a cyclone for later disposal. Vacuum cleaners, which are used in homes as well as in industry, exist in a variety of sizes and models—small battery-powered hand-held devices, wheeled canister models for home use, domestic central vacuum cleaners, huge stationary industrial appliances that can handle several hundred litres of dust before being emptied, and self-propelled vacuum trucks for recovery of large spills or removal of contaminated soil. Specialized shop vacuums can be used to suck up both dust and liquids.


History of Vacuum cleaner:-

In 1860 a carpet sweeper was invented by Daniel Hess of West Union, Iowa that gathered dust with a rotating brush and a bellows for generating suction. Another early model (1869) was the "Whirlwind", invented in Chicago in 1868 by Ives W. McGaffey. The bulky device worked with a belt driven fan cranked by hand that made it awkward to operate, although it was commercially marketed with mixed success. A similar model was constructed by Melville R. Bissell of Grand Rapids, Michigan in 1876. The company later added portable vacuum cleaners to its line of cleaning tools.

The end of the 19th century saw the introduction of powered cleaners, although early types used some variation of blowing air to clean instead of suction. One appeared in 1898 when John S. Thurman of St. Louis, Missouri submitted a patent for a "pneumatic carpet renovator" which blew dust into a receptacle. It was an internal combustion engine powered horse-drawn system. Corrine DuFour of Savannah, Georgia received two patents in 1899 and 1900 for another blown air system that seems to have featured the first use of an electric motor.


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How work Vacuum cleaner?

Electricity outlet supplies energy to the cleaner's electric motor. In a typical cleaner, the electric motor is rated at about 500–1000 watts, so it uses five to ten times as much energy as an old-style lamp. Rubber belt powered by electric motor turns brushes and beaters on the roller at the front of the machine. Vigorous beating and brushing loosens dirt from the carpet or rug. Fan attached to the electric motor sucks air and loosened dirt in through the front of the machine. Dirty air travels through to the back of the machine, cooling the electric motor as it passes by. Dirt is trapped in the bottom of the dirt bag. Relatively clean air emerges out of the back. Note that the outgoing air is much warmer than the incoming air because it's picked up waste heat from the electric motor.


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