About Vacuum Cleaners
Most homes with carpeted floors are likely to have a vacuum cleaner. In the United States, vacuum cleaners have popular in homes since 1920s. A vacuum cleaner is a device that uses an air pump to create a vacuum that sucks in dirt from floors, curtains and sofas. A vacuum cleaner works by building air pressure or vacuum and sucking air through the front nozzle. With the advancement in technology, there are many new models of modified vacuum cleaners coming on the market. Earlier vacuum cleaners used to be heavy, and it was difficult to take them from one place to another, but now, compact and easy-to-carry models have been developed. Vacuum cleaners come with a variety of brushes and bags to clean various areas. A vacuum cleaner has five components--an intake port, a fan, an electric motor, an exhaust port and a porous bag. All these components are enclosed within a body.
When you sip a soda through a straw, you are utilizing a simple suction mechanism; there is a drop of pressure between the bottom of the straw and the top of the straw. The fluid pressure is greater at the bottom than the top, so the soda gets pushed up to your mouth. The vacuum cleaner works on the same basic mechanism. The mechanics of a vacuum cleaner totally depends on air pressure.
When you plug the vacuum cleaner and switch it on, the motor of the vacuum cleaner starts the fan. The blades of the fan start rotating; these blades are responsible for the inflow and outflow of air in the vacuum cleaner. Along with the air, the dirt, dust or debris on the surface also goes in. This dirty air is sucked inside a porous bag of the vacuum cleaner. There is a filter that traps the dirt and dust and allows only clean air to escape out of the vacuum cleaner.
The canister vacuum cleaner, which is a modified version of a standard vacuum cleaner with a bag, works in the same way. The only difference between a normal vacuum cleaner and a canister vacuum cleaner is that in a canister vacuum cleaner, a canister is attached in the front of the unit to collect dirt and dust, and the filter is at the back of the unit.