The process of cleaning with a vacuum cleaner involves the collection of dust through various components such as the floor brush, connecting pipe, handle, hose, and main suction pipe. The dust is then stored in a dust filter bag located in the dust box. The filtered air is released into the motor via a layer of filter that prevents dust from rupturing the bag before being sucked into a protective barrier of the motor. To ensure that the air circulating out of the vacuum cleaner is free from dust, a filter is placed prior to the release of air through the motor. Although carbon brushes in the motor undergo regular wear and tear during operation, the filter helps to maintain a clean and healthy environment.
The level of air filtration depends on the quality of the filter material used. The finer the material, the better the filtration. However, this can result in poor air permeability, impacting the amount of air that the motor can suck in and ultimately reducing the effectiveness of the vacuum cleaner. Nonetheless, while efficiency is important, the primary concern for users is the level of comfort and cleanliness achieved through the use of the vacuum cleaner.
To enhance the air permeability of filter material with low permeability, it is manufactured in a wave-like form to provide a larger area for air to pass through. Interestingly, some of these filter materials can be washed for reuse. However, all filter materials have a "life" span which is determined by the accumulation of dust particles that ultimately clog the pores of the material.
To ensure maximum filtration and ventilation efficiency, it's recommended to use paper dust bags. These disposable bags are not only hygienic, but also very convenient to use. On the other hand, when cloth filter bags are cleaned, the fibers tend to harden, significantly affecting their filtering and ventilation capacity. While SMS three-layer composite filter material can be washed, its air permeability tends to decrease, making paper dust bags the preferred option.