In 1901, British civil engineer Booth went to the Empire Concert Hall in Leicester Square, London, to watch a demonstration of an American car dust collector. The machine used compressed air to blow dust into a container, a method Booth said was not smart because a lot of the dust failed to get into the container. Later, he did the opposite and used the vacuuming method. Booth made a very simple experiment: covered a handkerchief on the armrest of a chair, and sucked it off with his mouth. As a result, the handkerchief was attached with a layer of vacuum. dust. At that time, he made a vacuum cleaner, using a powerful electric pump to suck air into the hose and filter the dust through a cloth bag. In August 1901, Booth obtained the patent and established a vacuum cleaner company, but did not sell vacuum cleaners. He installed a vacuum pump driven by a gasoline engine on a horse-drawn carriage and provided door-to-door service. He extended three or four long hoses from the window into the room to vacuum, and all company employees wore work clothes.
In 1902, Booth's service company was called to Westminster Abbey to clean the carpets used for the coronation of Edward VII. Since then, business has been booming. In 1906, Booth made a small household vacuum cleaner. Although it was called "Small", it weighed 88 pounds (1 pound = 0.4536 kilograms) and was too bulky to be popularized.
In 1907, Spangula, an inventor in Ohio, USA, made a lightweight vacuum cleaner. He was working as a manager in a store at the time to relieve his son from the burden of cleaning carpets. He made a vacuum cleaner with The fan creates a vacuum that draws the duster into the machine and then blows it into the pocket. Since he was unable to produce and sell it himself, he transferred the patent to the fur manufacturer Hoover in 1908. At that time, Hoover began to manufacture a wheeled "O" type vacuum cleaner, which sold very well. This earliest household vacuum cleaner had a reasonable design, and it has not changed much in principle since its development.
The earliest vacuum cleaners designed were upright. In 1913 Wenler G?ring of Stockholm, Sweden invented the horizontal canister vacuum cleaner.
The cleaning principle of a vacuum cleaner is to use suction to absorb dust and dry dirt, such as threads, paper scraps, and hair, from floors, carpets, walls, furniture, and other surfaces that are difficult to remove with a broom. wait. Its main components are vacuum pump, filter bag (or filter), hose, extension tube and various nozzles of different shapes. Modern vacuum cleaners have various accessories, including coarse brushes, fine brushes, and rotating brushes for cleaning carpet dirt, flat nozzles for cleaning corners, and polishing brushes for cleaning geodesic slabs.
Household vacuum cleaners are usually used to remove dust, but everyone knows that vacuum cleaners can also perform many alternative functions.
1. Used when collecting items. When seasons change, bedding and other items are easily stored because they take up a lot of storage space and are not properly stored. If you put them into a custom-made plastic sealed bag, and then use a vacuum cleaner to remove the air in the bag and seal it tightly, it will not only save a lot of storage space, but also make it less susceptible to moisture and mildew.
2. Find small items. In home life, it is inevitable to accidentally drop small items such as buttons, pills, bottle caps, sewing needles, etc. You can find them effortlessly with the help of a suction device. Before use, you can wrap the vacuum cleaner's suction nozzle with a layer of gauze, and then select the appropriate wind power according to the size of the items. Then turn on the power and slide the suction nozzle back and forth around the fallen objects. The fallen objects will soon be absorbed. onto gauze.
3. Clean electrical appliances and remove dust. Vacuum cleaners can also be used for daily maintenance of electrical appliances such as TVs, DVD players, computers, stereos, air conditioners, etc., and to remove dust inside and outside the appliances. When removing dust, you should first unplug the power plug of the appliance, open and remove the casing of the appliance according to the instructions, use a straw of a suitable shape to insert into the interior of the appliance to remove the dust, then use a hair dryer to remove the moisture, and finally install the casing. Just restore it to its original state.