LG vacuum cleaners are equipped with a high-tech air purification system - HEPA filter. In English, HEPA stands for "Highly Efficient Particle Absorption".
Functions performed by the output filter for LG vacuum cleaner
To create a reliable barrier between the airflow with dust masses inside the vacuum cleaner and the room where cleaning is performed, a HEPA filter is used. It purifies the outgoing air from small polluting particles: various allergens, dust mites, various villi, the smallest dust fractions.
The LG HEPA Vacuum Cleaner Filter removes dust buildup from the air. Thorough cleaning of the premises is necessary for sick people, in pharmaceutical enterprises, in hospitals and clinics, in the electronics industry, at home.
Classification of output filters
The filter systems of LG vacuum cleaners use HEPA 10, HEPA 11, HEPA 12, HEPA 13 and HEPA 14 filter classes.
According to existing standards, the higher the serial number of the class to which the filter belongs, the greater the percentage of fine dust (particle size 0.3 microns) it keeps from re-emission into the air:
- HEPA 10 delays up to 85%;
- HEPA 11 - up to 95%;
- HEPA 12 - up to 99.5%;
- HEPA 13 - up to 99.95%;
- HEPA 14 - up to 99.995%.
Optimal HEPA filter size
To minimize the resistance to air moving inside the vacuum cleaner, the filter device must have as large an area as possible. To achieve the desired level of purification, this filter is made of material folded into an accordion, glued into the frame of the maximum allowable dimensions. The HEPA filter, which has a small cleaning area, quickly becomes clogged with dust, as a result of which it obstructs the passage of air flow, which in turn reduces the suction capacity and leads to engine overheating.
LG vacuum cleaner filters are sized to meet all requirements and create a high level of indoor air purity. The material from which HEPA filters are made determines their durability and shelf life. They are divided into disposable paper and reusable PTFE.
Operation principle
The HEPA filter for LG vacuum cleaner is designed to filter particles ranging in size from 0.1 microns to 1.0 microns.
The principle of operation is based on the following effects:
- Particles of various sizes in the air stream are held by clinging tofilter fibers or previously adhering particles. This is called the hook effect.
- Particles of large size under the action of inertia force fly in the air stream (without changing the trajectory) until they collide with the filter material. This is an inertial effect.
- The movement of particles smaller than 0.1 micron, moving in a low-intensity air stream, becomes chaotic as a result of frequent collisions of these fragments with air molecules. This process increases the ability to filter them out by triggering the first two effects. This process is called the diffusion effect.
Exhaust filter for LG vacuum cleaner VK71187HU is HEPA 12.
Factors that reduce filter performance
Since this type of filter is designed to capture particles with a diameter of 0.1-1.0 microns, smaller particles are not filtered out. Larger particles knock out previously settled small fragments, which are able to overcome the filter layer and fly out into the room. In addition, large particles clog the areas that pass through the filter, resulting in increased resistance to intake air and overheating of the engine of the device.
The filter maintains nominal performance as long as it allows the passage of air flow and sticking of particles to the fibers. The duration of normal operation depends on the area of the filter surface. The smaller it is, the faster the filter clogs.
WhenIn a large layer of filtered particles, their masses break away from the filter material and separate dust accumulations are formed, on which new fragments stick. In this state, the filter does not provide cleaning in accordance with the parameters set by the technical documentation, and when it is used, it starts to smell like dust.
To restore the normal operation of the vacuum cleaner, it is necessary to replace the filter or clean the filter in use. The frequency of these operations is specified in the attached documents.
Cleaning Methods
With proper care, the product retains its operational properties much longer. Washable elements can be washed, and disposable elements must be replaced. The disposable filter material is paper or fiberglass. This filter has a service life limit, at the end of which it must be changed. The material of the reusable filter is PTFE. This product is washable and can be rinsed with water when dirty, so it can be used for a long time.
By blowing the filter in the opposite direction to the working one, you can also remove a certain amount of adhering microparticles. The filtration quality declared by the manufacturer cannot be restored, because after such procedures, particles remain on the filter fibers that are very firmly stuck to them. Therefore, it is necessary to change the product within the time specified in the instructions.
Pre-treatment systems
To create conditions for restricting access to particles larger than 0.1 microns,there are additional cleaning systems.
Such a system could be:
- water filter;
- cyclone filter;
- cloth bag;
- paper bag;
- synthetic multilayer bag;
- pre-motor filter.
The water filter creates quite a few problems, because with the splashing, some dirt gets to the HEPA filter, which clogs the space between the fibers. Bacteria multiply on a damp warm filter. Therefore, after cleaning, it is necessary to dry all the components of the device. The HEPA filter in LG vacuum cleaners needs to be replaced frequently. The operation of such a device will be quite expensive.
The cyclone filter passes a lot of large and small particles to the outlet filter, which leads to a rapid clogging of the fibers of the fine filter. Therefore, when using such systems, there is a need for frequent cleaning and replacement.
The fabric bag does not retain fine particles smaller than 0.2 microns, so a large amount of such dust enters the outlet filter, and as a result, suction power decreases due to clogging of the fine filter.
The paper bag provides good filtration, but the disadvantage is that it has a low degree of strength.
Synthetic bag is the best option of all the above, because it has sufficient strength and good filtering ability. The operation of the filter in such a system occurs in the normal mode in accordance with the requirementstechnical documentation.
In addition to the filtration systems listed above, LG vacuum cleaners use pre-motor filters that protect the engine from contamination by large dust fractions. Replacement and cleaning must be carried out within the time specified in the accompanying documentation.
The pre-engine filter for LG vacuum cleaner provides reliable protection of the engine from pollution. It is made from special foam rubber and is quite affordable.
Customer Reviews
Users leave good reviews for HEPA filters for LG vacuum cleaners, which note the high quality of air purification. Many talk about the disappearance of allergy symptoms that were observed before.
People advise buying LG vacuum cleaners, which are equipped with filters that keep the atmosphere in the house at the level necessary for a he althy life.
