Vacuum cleaners are devices that use an air pump to

create a partial vacuum to suck up dirt and dust,

normally from carpeted floors. Most homes that have

carpet floors have a vacuum for cleaning. The dirt

that is pulled up from the carpet is collected by

a filtering system or even a cyclone for later

disposal.

There are several type of configurations possible

for vacuum cleaners.

Upright

Upright vacuums have the pump mounted directly above

the suction intake, with the bag mounted directly on

the handle, which will rise to waist height or so.

The upright type designs normally employ mechanical

beaters which often rotate brushes, to help disturb

dust enough to be vacuumed up. These beaters are

normally driven by a belt that is attached to the

vacuum motor.

Canister

Also known as cylinder vacuums, the canister type

designs have the motor and bag in a seperate canister

unit that connects to the vacuum head by a flexible

hose. Even though upright units have been tested

as being more effective, the lighter and more

maneuverable heads of the canister models are quite

popular. Some models have power heads, which contain

the same type of mechanical beaters found it upright

units, although they are driven by a seperate electric

motor.

Wet vacs/dry vacs

These types a specialized form of the canister

vacuum and they can be used to clean up wet or liquid

spills as well. They will commonly accomodate both

wet and dry soilage, with some being equipped with

a switch or exhaust port that reverses the flow of

air. This is a very useful function for everything

from clearing clogged hoses to blowing dust into a

corner for easy collecting.

Back pack vac

These types of vacuums are commonly used for

commercial cleaning, as they allow you to move about

quickly and efficiently in a large area. They are

basically canister vacuum cleaners, except for the

fact that straps are used to carry the canister

on your back.

Built in or central

These types of vacuum cleaners will move the suction

motor and bag to a central location in the building

and provide vacuum inlets at strategic places

throughout the entire building. You only need to

carry the hose and pickup head from room to room,

while the hose is normally 25 foot long and allows

a large range of movement without changing vacuum

inlets.

The plastic piping will connect vacuum inlets to

the central unit. The vacuum can either be unpowered

or have beaters that are operated by an electric

motor or an air driven motor. The bag in the

central vacuum system is normally so big that

emptying it or changing needs to be done less as

often, sometimes only once a year.

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