When you sip soda through the straw, you are using the easiest of all sucking processes. Soda suction reduces the pressure between the bottom of the straw and the top of the straw. With more liquid pressure from top to bottom, the soda is pushed towards your face.
This is the same basic process when working with a vacuum cleaner, although the performance is a little more complicated. In this article, we will look inside a vacuum cleaner to find out how suction works when cleaning your home dust and debris. As we can see, the standard vacuum cleaner design is extremely simple, but it relies on a lot of physical principles for effective cleaning.
It may look like a complex machine, but a conventional vacuum cleaner actually consists of only six essential components:
- An intake port, which can have a variety of cleaning supplies
- An exhaust port
- An electric motor
- A fan
- A perforated bag
- A housing that contains all the other elements
This happens when you plug in the vacuum cleaner and turn it on:
The electric current drives the motor. The motor is attached to a fan, which has an angular blade (like an aviator.
When the fan blades rotate, they force the air into the exhaust port (see To find out how the planes work.
This pressure drop behind the fan is like a straw pressure drop when you sip from your drink. The vacuum cleaner (ambient air pressure) drops the pressure level behind the fan below the outside pressure level. This creates suction inside the vacuum cleaner, a partial vacuum. The ambient air pushes itself into the vacuum cleaner through the intake port because the air pressure inside the vacuum cleaner is less than the outside pressure.
As long as the fan is running and the passage through the vacuum cleaner is open, there is a constant flow of air through the intake port and outside the exhaust port. But how does a gust of wind collect dirt and debris from your carpet? The basic principle is friction.
Vacuum Cleaner Variables
In the last section, we saw that vacuum cleaners pick up dirt by running air flow through the air filter (bag). The suction capacity of a vacuum cleaner depends on many factors. Whether breastfeeding is strong or weak depends on:
Fan power: To make strong suction, the motor must rotate at good speed.
Ventilation barriers: When a vacuum bag accumulates a large amount of debris, the resistance to air outflow is greater. Each particle of air moves more slowly due to the increased tension. This is why a vacuum cleaner works better if you replace the bag than to vacuum for a while.
Since the speed of the vacuum fan is constant, the amount of air passing through the vacuum cleaner per unit is also constant. Regardless of the size of the intake port, the same number of air particles per second must go into the vacuum cleaner. If you make the port smaller, the individual air particles need to be removed more quickly so that they can pass that amount of time. Due to Bernoulli’s principle, where the wind speed increases, the pressure decreases (see How the aircraft works to learn about this physical principle). The pressure drop translates into a greater suction power at the intake port. Since they create a strong suction force, narrow vacuum attachments can lift heavier dirt particles than wider attachments.
At the most basic level, it’s about a vacuum cleaner. Since the invention of the electric vacuum a century ago, many innovative thinkers have expanded and changed the concept to create a variety of vacuum systems. So far, we’ve seen the most common types of vacuum cleaners: steep and canister designs, both of which collect dirt in a perforated bag. For most of the history of vacuum cleaners, these have been the most popular designs, but there are many more ways to configure the suction system. We will look at some of these in the next section and more information: Earthhershop