LG vacuum cleaners are equipped with high-tech air purification system - HEPA filter. Translated from English, HEPA means "high-performance particle absorption."
Functions performed by the output filter for the LG vacuum cleaner
To create a reliable barrier between the air flow with dust masses inside the vacuum cleaner and the room in which the cleaning is carried out, a HEPA filter is used. It cleans the exhaust air of small polluting particles: various kinds of allergens, dust mites, various villi, and finest dust fractions.
The filter for the LG HEPA vacuum cleaner removes dust accumulations from the air. Thorough cleaning of the premises is necessary for sick people, in pharmaceutical enterprises, in hospitals and clinics, in the electronic field of production, in domestic conditions.
Output Filter Classification
The filter systems of LG vacuum cleaners use filters of classes HEPA 10, HEPA 11, HEPA 12, HEPA 13 and HEPA 14.
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 being returned to the air:
- HEPA 10 holds 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
In order to minimize the resistance to air moving inside the vacuum cleaner, the filter device should have the largest possible area. To achieve the desired level of cleaning, this filter is made of material folded into an accordion, glued to the frame of the maximum allowable size. The HEPA filter, which has a small cleaning area, quickly becomes clogged with dust, as a result of which it prevents the passage of air flow, which, in turn, reduces the suction capacity and leads to engine overheating.
Filters for the LG vacuum cleaner in size meet all the requirements and create a high level of clean air in the room. The material from which the HEPA filters are made determines their durability and shelf life. They are divided into disposable paper and reusable PTFE.
Operating principle
HEPA filter for LG vacuum cleaner 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 retained by adhering to the filter fibers or to particles adhering earlier. This is called an engaging effect.
- Large particles under the influence of inertia 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 less than 0.1 microns in size, moving in a stream of low-intensity air, becomes chaotic as a result of frequent collisions of these fragments with air molecules. This process increases the possibility of filtering them out by triggering the first two effects. This process is called the diffusion effect.
The output filter for the LG VK71187HU vacuum cleaner belongs to the class HEPA 12.
Filter Performance Factors
Since this type of filter is designed to capture particles with a diameter of 0.1-1.0 microns, particles of smaller sizes 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 transmission areas in the filter, as a result of which the resistance to intake air increases and the engine of the device overheats.
The filter retains its rated performance as long as it allows air to pass through and particles to stick 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.
With a large stratification of the filtered particles, their masses detach from the filter material and separate dust accumulations are formed, on which new fragments adhere. In this condition, the filter does not provide cleaning in accordance with the parameters established by the technical documentation, and when used, it starts to smell of dust.
To restore the normal operation of the vacuum cleaner, it is necessary to replace the filter or clean the used one. The frequency of these operations is specified in the attached documents.
Cleaning methods
With proper care, the product retains its performance properties for much longer. Washable items can be washed, and disposable items must be replaced. Disposable filter material is paper or fiberglass. This filter has a lifetime limit at the end of which you need to change it. The material of a refillable filter is ftoroplast. This product is subject to cleaning, it can be washed with water as it becomes dirty, therefore it is used for a long time.
By blowing the filter in the opposite direction to the worker, it is also possible to remove a certain amount of adhering microparticles. The quality of the filtration, declared by the manufacturer, cannot be restored, since after carrying out such procedures, particles remain on the filter fibers that adhere very strongly to them. Therefore, it is necessary to change the product within the time specified in the instructions.
Pre-cleaning systems
To create conditions for restricting the access of particles larger than 0.1 microns, there are additional cleaning systems.
Such a system may be:
- water filter;
- cyclone filter;
- fabric bag;
- paper bag;
- synthetic multilayer bag;
- pre-motor filter.
The water filter creates a lot of problems, because with the spray a certain amount of dirt gets to the HEPA filter, which clogs the space between the fibers. Bacteria multiply on a moist, 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 many large and small particles to the output filter, which leads to the fast clogging of the fine filter fibers. Therefore, when using such systems, there is a need for its frequent cleaning and replacement.
The fabric bag does not retain small fractions smaller than 0.2 microns, so a large amount of such dust enters the output filter, and, as a result, there is a decrease in suction force due to clogging of the fine filter.
A paper bag provides good filtration, but its drawback is its low degree of strength.
A synthetic bag is the best option of all of the above, since it has sufficient strength and good filtering ability. The filter works in such a system in the normal mode according to the requirements of technical 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.
Premotor filter for LG vacuum cleaner provides reliable protection of the engine from pollution. It is made of special foam rubber and is quite available for purchase.
Customer reviews
Users leave good reviews about 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 earlier.
People are advised to buy LG vacuum cleaners, which are equipped with filters that maintain the atmosphere in the house at the level necessary for a healthy life.