What Is The Physics Behind The Vacuum Cleaners?

Nowadays, we are busy with our lifestyles and don’t have enough time for ourselves. This busy lifestyle makes tough to maintain our home from dust contains the fungal, allergic particles, bacteria, mist, and environmental contaminants like perfluorooctanoic acid, carbon dioxide, nitrous and sulfur oxides.

Sometimes, our daily activities which make our life easier helps to contaminate the home air.

Regular Vacuum

To face such odd situation, we have a vacuum cleaner to get a clean environment in the house. Many people out there love the vacuum cleaner to reduce the allergic environment in the house. The companies produce micro-filtration bags contain vacuum cleaners which can capture 99% of the dust particles of size up to 0.3 microns.

You may be curious to know how such helpful machine to work in cleaning dust and dirt. This thing is nothing but suction; the vacuum takes away dirt and stores for disposal. From the mechanical point of view, a conventional vacuum cleaner has some features, that are-pressure point, motor, filter, suction capability, and bag system.

Vacuum Motor:

The main thing of a vacuum cleaner is an electric motor. To create a pressure point mood, the motor spins a fan for sucking air and pushing it out the other side, into a bag or a canister.

You may think that it would stop working after a few seconds. Actually, no it won’t do unless you stop it.

Since the vacuum comes with an exhaust port which vents the air out the other side so that the motor can continue its functioning spontaneously.

vacuum motor

Pressure Point:

There is a fan in the body of a vacuum cleaner which gets power from the motor. After switching on the vacuum, you will find that the motor drives the rotation of the fan blades and creates suction. The fan drives air out through vents so quickly that it makes a localized area completely devoid of air and air rushes rapidly to replace the lost air.

As the vacant area wants to fill this low-pressure airless space, vacuum cleaner gets sealed all access points in the vacuum cleaner head and hose that the air is not able to come in. Such situation ensures the replacement air can come from, where the vacuum head meets the carpet or targeted area.

​Suction Capability:

Suction Capability of Vacuum

The suction capability of a vacuum is a continuous flow of air from a high-pressure area to a low-pressure area. That means the flow comes from cleaning area such as carpet to the inner body where the air pressure is low.

This difference causes the replacement of air to be pulled in so rapidly that both light debris like dust and dander and heavy debris to get pulled into the vacuum cleaner and reach to the filter or bag.

The Rotating Brush:

Many vacuum cleaners are designed with a rotating brush that helps to sweep the floor. This rotating brush gets power from the same motor which runs vacuum cleaners’ fan. This brush is very helpful to loosen trapped dirt and dust particles stuck in the carpet that is tough to be picked up by the air pressure.

Vacuum With Filter: 

Most vacuums, nowadays, come with a HEPA filter that the users need not take extra effort for changing the bag full of dirt and debris. In a bag-less vacuum, only the filters can separate the dust from the air. You will get an alert when the filter becomes full of dirt and debris.

  • Inlet is the attachment to a regular cleaning head and interchangeable tools.
  • Dirt collecting bin fits inside the cleaner, but you can place it on its side so that you can see things more clearly.
  • The HEPA filter is a cylinder of folded paper attached to the base of dirt bin. The air suction through the filter picks up all the dirt behind the bin. HEPA filter in a vacuum cleaner uses two quite different mechanisms to clean the air stream. The paper is used in the filter a mat of very dense glass fibers that it does simply filter out small dust particles like a sieve.
  • Filter and outlet grille is a simple bit of sponge which helps to remove and clean.

Vacuum Cleaners With Bags: 

Vacuum cleaner with the bag is a bit old fashioned, but till date, many people use this as their essential daily appliance. If you choose such type of vacuum cleaner, you need to change the full of debris after every cleaning session. There is a powerful electric motor attached to a fan that sucks dust from the air. A disposal paper bag as a dirt-bag set inside the vacuum body, which picks the dust so you can use the cleaner for some time without worrying about where all the dirt is gone.

This bag is not airtight, as you may think. Although there is no, any dirt air can pass out of it. It effectively works as a filter like when the vacuum cleaner catches all dirt and debris through the suction process, then the sucked dirt and debris to reach for the bag in the vacuum cleaner. Essential things of such vacuum need to be considered-

  • After switching off electricity outlet supplies energy, the cleaner's electric motor and the rubber belt start working and the electric motor turns brushes and beaters on the roller at the front of the machine.
  • These beating and brushing slacken dirt from the carpet or rug.
  • The Fan stuck to the motor sucks air and loose dirt through the front machine. Then dusty air gets trapped in the bag with dirt and debris through the back of the machine.
  • Finally, the warm air gets out of the back part of the body.

Final Opinion:

Now we know many things about how a vacuum cleaner works. This knowledge will help us in purchasing a right vacuum cleaner that can meet all our cleaning needs. Before buying, you have to consider the power of the motor, and also the size of the intake port, the part that sucks up the dirt.

You will find many different types of vacuum cleaners out there, but all act as the same tasks through creating negative pressure using a fan, trapping the sucked-up dirt, cleaning the exhaust air and then releasing it. Imagine your sweet home would be a much dirtier place without a useful vacuum cleaner.

What Is The Physics Behind The Vacuum Cleaners?
Article Name
What Is The Physics Behind The Vacuum Cleaners?
Perhaps, you are curious about that what is the reason behind a vacuum. I have described here actually what physics is working behind a vacuum cleaner.
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Pet Vacuum Lab
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