Modern refrigerators have evolved from simple boxes for storing food into complex climate systems designed not only to cool, but also to preserve the freshness of products at the molecular level. One of the most discussed and advanced technologies in this area is the air purification system Plasmacluster. Equipment owners often wonder: is this function really useful or is it just a marketing ploy to increase prices?
In this article we will analyze in detail the physical principle of the technology, its impact on the shelf life of vegetables, fruits and meat, and also discuss the need for filter maintenance. Understanding these processes will help you operate the equipment correctly and use its resource as efficiently as possible.
The physical principle of the technology
The technology Plasmacluster, developed by Sharp engineers, is based on the process of air ionization, simulating a natural phenomenon. In nature, the air is purified thanks to positive and negative ions that are formed under the influence of lightning and ultraviolet radiation. A special generator is installed inside the refrigerator, which splits the water molecules contained in the air into active positive (H+) and negative (O2-) ions.
These ions do not remain in a free state for long. They instantly combine with oxygen molecules to form hydroxyl radicals (OH). It is these radicals that have a high oxidizing ability and attack the shells of bacteria, viruses and mold spores. Mechanism of action is that the active particles take electrons from the protein structures of microorganisms, destroying them and turning them into harmless water.
⚠️ Attention: Plasmacluster technology It is effective against bacteria and mold, but it is not intended to remove rotting odors from already spoiled food. If meat or fish has begun to decompose, ions will not be able to restore freshness to them or completely neutralize the strong smell of rottenness.
The process of generating ions occurs continuously while the refrigerator is on. The ion concentration in the chamber is maintained at a level that is safe for humans, but sufficient to suppress pathogenic flora. It is important to note that the efficiency of operation directly depends on the humidity of the air inside the chamber, since it is water vapor that is the “raw material” for creating ions.
Impact on food safety
The main task of the refrigerator is to extend the shelf life of products, and here air purification technology plays a key role. The main enemy of freshness is not only temperature, but also ethylene. This gas is released by many vegetables and fruits during the ripening process, accelerating their spoilage and starting a chain reaction of rotting neighboring products.
Active ions produced by the system Plasmaclusterare capable of breaking down ethylene molecules. As a result, the ripening process slows down, vegetables remain crisp longer, and fruits retain their elasticity. Research shows that having such a system can increase the standard shelf life of fresh greens by several days compared to conventional models.
The effect is especially noticeable on products with a high moisture content. Strawberries, grapes, tomatoes and greens in such conditions are less susceptible to the formation of white plaque. However, it is worth understanding that the technology does not replace proper storage: products still need to be packaged or special containers used for areas with high humidity--WIDGET:checklist:Checking the condition of products:Inspect vegetables for rot |Remove spoiled specimens|Wipe the shelves with a damp cloth|Check ventilation operation-->
Difference from carbon filters and other systems
On the household appliances market you can find various cleaning systems: deodorizers, carbon filters, systems Multi Air Flow with ionization. What is the fundamental difference? Carbon filters work on the principle of adsorption: they absorb odor molecules passing through them. Over time, their resource is exhausted, and they require replacement, otherwise they themselves become a source of odor.
The system Plasmacluster acts differently. It does not accumulate pollution, but destroys its source. This makes it more durable and effective in combating living organisms (bacteria), while charcoal primarily fights odor-causing chemicals. Combining these technologies in modern models gives the best result.
| Characteristics | Plasmacluster (Ionization) | Carbon filter | Silver coating |
|---|---|---|---|
| Principle action | Active destruction of bacteria with ions | Absorbing odors (adsorption) | Passive suppression of microbial growth on the surface |
| Resource | Long (depending on generator) | 6-12 months (requires replacement) | The entire service life of the refrigerator |
| Efficiency against mold | High | Low | Medium |
| Odor elimination | Medium (removes the source) | High (absorbs molecules) | Low |
Thus, if your priority is maximum hygiene and mold protection, ionization would be a better choice. If the main problem is the mixing of fish and cake odors in one chamber, then having a good carbon filter or deodorizer is also important.
Operating modes and system control
In most modern refrigerators equipped with this technology, the system operates in automatic mode. However, manufacturers often provide the ability to manually control or select the cleaning intensity. This is especially true when loading a large amount of fresh food or the appearance of foreign odors.
Usually control is carried out through a panel on the door or through a mobile application, if the refrigerator supports Smart functions. The user can select the "Quiet" mode for night time, when the generation of ions occurs less intensively, or the "Maximum" mode for quickly purifying the air after defrosting or loading products from the market.
Can Plasmacluster be turned off?
Yes, in most models the function can be turned off through the menu settings. However, this is not recommended, as this will reduce the hygiene of food storage and can lead to faster growth of mold in hard-to-reach places.
It is worth considering that the operation of the ion generator may be accompanied by a barely audible, quiet crackling or hissing sound. This is a normal physical process of electrical discharge, and not a sign of equipment malfunction. If the sound becomes loud or annoying, it is worth checking the tightness of the panels.
Maintenance and care of the cleaning system
Despite the stated durability, the air purification system requires minimal attention from the user. The main condition for effective operation is the cleanliness of the air intake openings. Dust, lint and grease deposits can impede air circulation, which prevents ions from spreading throughout the entire volume of the chamber.
It is recommended to wipe the area around the indicator or hole from which purified air is supplied every 3-6 months. To do this, use a soft damp cloth. It is critically important not to use aggressive chemicals or abrasives directly on the generator grill, as this can damage the sensitive elements.
⚠️ Attention: If the system operation indicator lights up red or the "Replace filter" signal is flashing (in models with combined system), ignoring this signal will lead to a decrease in cleaning efficiency and the possible appearance of an unpleasant odor in the chamber.
It is also worth monitoring the condition of the drainage hole if it is located in the area of the ion flow. Clogged drainage can increase humidity to a critical level, which, paradoxically, can reduce the efficiency of ionization due to moisture condensation on the electrodes of the generator.
Energy consumption and noise level
Many users fear that additional functions will significantly increase their energy bills. We hasten to reassure you: the generator Plasmacluster consumes a negligible amount of energy. Its power is usually less than 1 Watt, which in terms of annual consumption is comparable to the operation of an electronic watch.
As for acoustic comfort, modern models operate almost silently. The noise level from the operation of the ionizer is usually below the threshold of human audibility (less than 20 dB) and is lost against the background of the operation of the compressor or system fan No Frost. Noise problems can only occur if the fan that blows air is faulty.
The impact on the overall energy efficiency class of the refrigerator when the air purification system is turned on is negligible. Therefore, when choosing between a model with and without ionization, you should be guided solely by the desire to improve the quality of food storage, and not by worries about the counters.
Frequently asked questions (FAQ)
Is Plasmacluster technology safe for storing food for children?
Yes, absolutely. The technology is based on a natural process similar to natural ionization. The concentration of ozone (if it is formed in microscopic quantities) or other by-products of the reaction is within limits that are safe for human health and does not affect the taste of the products.
Is it necessary to change the Plasmacluster filter?
The ion generator itself is a durable unit and does not require regular replacement throughout the life of the refrigerator. However, if your model has a combination with a carbon filter or a HEPA filter, then they must be changed according to the instructions (usually once a year).
Why did a strange smell appear after turning on the system?
In the first hours of operation, the new generator may emit a slight specific smell, similar to the smell after a thunderstorm. This is normal and goes away quickly. If the smell resembles burnt plastic and does not disappear after a day, contact the service center.
Can ionization damage product packaging?
No, the concentration of active particles is selected so as to affect microorganisms, but be safe for polymer packaging, glass and metal. The oxidative reaction occurs only on the surface of microbial cells.