Vacuum Cleaner Motors
What is a Vacuum Cleaner?
What is a Vacuum Cleaner?
A vacuum cleaner is a machine that sucks up dust and debris from the floors, surfaces and other items in a home or workplace. The debris is then deposited into a bag, container or other holding area for disposal. Most vacuums also have filters that help trap and remove small particles such as dust, dirt and allergens from the air that's drawn into the appliance.
A motor, often electric, powers a fast-spinning fan that creates low pressure inside the device and thereby sucks up the debris. The fan may be driven by a battery, electric or gasoline engine. The motor can also blow air to assist in dusting. The vacuum cleaner may have a hose attached to it that extends into nooks and crannies to reach hard-to-reach areas. Many also have attachments such as a crevice tool, upholstery brush or pet hair remover for cleaning the nooks and crannies of furniture and appliances.
As a result of these innovations, the vacuum cleaner has become one of the most important cleaning appliances in modern households, particularly in countries where wall-to-wall carpeting is rare and most homes have tile or hardwood floors that can be easily swept, mopped or dusted without power assistance. The vacuum has also been adapted for commercial use, such as in restaurants and stores where large areas must be regularly cleaned.
When shopping for a new vacuum cleaner, consumers should be sure the product meets their needs and budget. CNET staff writers and editors use price and value as a primary metric for our reviews of vacuums. A good way to evaluate a vacuum cleaner is to compare its price to the performance, comfort and features it provides.
A vacuum cleaner can be a noisy machine. Some models — especially those powered by gas engines — produce loud noises that can disrupt work and family life. Some vacuums have special features that reduce noise and vibration. One such feature, first introduced in 1954, was the Hoover Company's Constellation model. This cylinder-type vacuum cleaner didn't have wheels, but sat on the floor and floated on exhaust air.
Other vacuum cleaners can be almost silent, especially those powered by rechargeable batteries. This is because the motors of these models don't need to spin as fast and they can be built with smaller, quieter motors. Some also have a filtered exhaust that's less disruptive to the household than the blown exhaust of other types of vacuum cleaners.
Consumers should be aware that all vacuum cleaners make some of the debris they collect airborne by blowing it back into the room, and in doing so can cause respiratory problems. To reduce this risk, the vacuums should be kept free of debris and clogs that can restrict airflow and prevent proper operation. Regularly emptying the dust bag and cleaning the bin are essential to maintaining a clean, working vacuum. The same is true for the filters, which should be emptied and cleaned when needed.
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