Specifications

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pressure) increases in front of the fan and decreases behind the fan. This pressure drop behind
the fan is just like the pressure drop in a straw when you drink. The pressure level behind the fan
drops below the pressure level outside the vacuum cleaner. This creates suction, a partial
vacuum, inside the vacuum cleaner. The air pushes itself into the vacuum cleaner through the
intake port because the air pressure inside the vacuum cleaner is lower than the pressure
outside.
Cylinder vacuum cleaners have the following main uses:
1. For efficient, general purpose cleaning around the home and car interiors
2. To vacuum areas that would be awkward to clean with an upright vacuum cleaner, like
stairs and under furniture
3. To clean upholstery, crevices, curtain fabrics, car interiors and remove pet hair, when
used with a range of accessories.
With the motor and bag (if the cylinder vacuum cleaner is a bagged model) in a separate
unit connected to the hose, cylinder vacuum cleaners are ideal for cleaning floor spaces with
furniture and stairs, and reach far more places around the home than an upright vacuum cleaner.
Cylinder vacuum cleaners also beat upright vacuum cleaners on maneuverability, with long
floor heads that are lighter and easier to direct when vacuum cleaning.
Upright Vacuum Cleaner:
A vacuum cleaner operates by creating a low pressure area inside the machine causing for
air at atmospheric pressure to be forced or “sucked” into the system. Most commonly, the
electric motor uses a fan; spinning of the fan causes the low pressure region and therefore the
suction. A spinning brush is often used to help sweep up dust, dirt or other particles into the air
stream. Particles pass through the intake port and are deposited into some type of container. Air
is forced out through the exhaust port to allow for the continuous flow of air. Finally, dirt and dust
is removed by either removing the porous bag or emptying the removable container. Upright
vacuum cleaners are best used in the following ways:
Fig.12.1 - Cylinder vacuum cleaner